SELWOOD SELTORQUE S150 User manual

Selwood Seltorque S150 Manual

SELWOOD SELTORQUE S150

Model Designation

From the 1st January 2004 the Seltorque 150C will be

known as Seltorque S150.

Operating and Service Manual

The roducts of Selwood Limited, are designed,

develo ed and roduced in the com any's Chandler's

Ford factory. Many features are covered by world-

wide atents. Product names such as S ate, Sim lite

and Seltorque, are registered trade marks.

As all roducts are subject to continuous develo ment,

the com any reserves the right to alter the

s ecifications and information given in this manual

without rior notice.

Whilst every care has been taken in the re aration of

this ublication the information it contains must not be

regarded as binding.

Amendments to this ublication will only be issued to

cover those design changes which fundamentally alter

the build or o eration and servicing rocedures. They

will be distributed through the com any's dealers and

agencies.

Published by Selwood Limited.

Instructions or Ordering

Replacement Parts

1. Always quote the um serial number located on

the late fastened to the bearing and air um

mechanism housing.

2. Always quote the art number(s) (ten digit) of the

com onent(s), NOT the item number(s).

3. Always quote the descri tion of the com onent(s).

Items usually su lied together as sub-assemblies will

have the sub-assembly art number rinted at the

bottom of the relevant age.

Additional co ies of this manual may be ordered from

Selwood Limited, Pum Division, by quoting the

ublication number shown on the outside back cover.

HEALTH AND SAFETY AT WORK

A ril 1975

As manufacturers of um s and associated equi ment

we wish to inform you that, in com liance with Section

6 of the Act, safety recautions should be taken with

our roducts.

We take every care to ensure as is reasonably

racticable that our roducts are safe and without risk

to health when ro erly used. Nevertheless,

a ro riate health and safety recautions must be

taken, and in articular you are requested to have

s ecial regard to the o erational and safety

requirements leaflet P769 which accom anies each

um on des atch from our remises.

Our roducts also conform to the E.E.C. Machinery

Safety Directive and carry the C.E. mark.

CALIFORNIA USA

PROPOSITION 65 WARNING

Diesel engine exhaust and some of its

constituents are known to the State of

California to cause cancer, birth

defects, and other re roductive harm.

WARNING

Pum s and engines may be fitted with

seals or 'O' rings manufactured from

VITON or similar material.

When tem eratures reach 400°C

(720°F) a corrosive acid is roduced,

which cannot be removed from the skin.

If signs of material decom osition are

evident, or if in doubt,

always wear

disposable heavy-duty gloves.

Selwood Seltorque S150 Manual

SELWOOD SELTORQUE S150

CONTENTS

Title Page

1 GENERAL INFORMATION..............................3

1.1 Installation ........................................................3

1.2 O eration..........................................................3

1.3 Maintenance .....................................................3

1.4 I.C. Engines ......................................................3

1.5 Fitting Instructions for Centaflex Cou lngs

(Diesel Engines) ...............................................3

1.5.1 Pre aration of the Centaflex Cou ling for

Pum Removal..............................................4

1.5.2 Centaflex Cou ling Assembly Sequence....4

1.5.3 Re lacement of Steel Hub and Rubber

Element ..........................................................4

1.6 Electric Motors..................................................5

1.7 Fitting Instructions for Fenner Cou lings

(Electric Motors) ...............................................5

1.8 Seltorque S150 Standard Data.........................5

2 ROUTINE MAINTENANCE..............................5

3 LUBRICATION AND FASTENING TORQUES6

3.1 Pum Lubrication..............................................6

3.1.1 Commissioning Period..................................6

3.1.2 After Commissioning Period.........................6

3.2 Fastening Torques............................................6

4 CONDITIONS OF WARRANTY .......................7

5 MAJOR SERVICING........................................7

5.1 Air Pum Maintenance .....................................7

5.1.1 Delivery and Suction Valves (A07)...............7

5.1.2 Actuator Valve (A16) .....................................7

5.1.3 Actuator Seal (A18) .......................................7

5.1.4 Actuator Neck Seal (A21) .............................8

5.1.5 Drive Rod Seal Assembly and Bearing

(A25 and A28)................................................8

5.2 Se arator Maintenance ....................................9

5.2.1 Float (B11)......................................................9

5.2.2 Peel Valve (B21)............................................9

5.2.3 De osits of Solids........................................10

5.3 Im eller, Mechanical Seal and Delivery

Valve Maintenance .........................................10

5.3.1 Im eller (C04) ..............................................10

5.3.2 Mechanical Seal (C08)................................11

5.3.3 Delivery Valve (C27)....................................12

5.4 Maintenance of Flushing Chamber, Air

Pum Mechanism, Drive Cou ling, Drive

Shaft Bearings and Li Seal ...........................12

5.4.1 Flushing Chamber (D33).............................12

5.4.2 Air Pum Mechanism..................................13

5.4.3 Bearings and Li Seal (D15, D18 and

D04) ..............................................................14

5.5 Chassis Maintenance .....................................15

5.6 Su ersilent Cano y - Cano y Removal..........15

5.7 Su ersilent Cano y - Fuel Tank Removal ......16

5.8 Su ersilent Cano y - Fuel Tank Re-fitting......16

5.9 Su ersilent Cano y - Cano y Re-fitting .........17

6 WORKSHOP TOOLS .................................... 17

6.1 Care of Servicing Tools.................................. 17

6.2 Fitting of Actuator Neck Seal.......................... 17

6.3 Removal of Mechanical Seal Stationary

Seat and Joint Ring........................................ 17

6.4 Removal of Drive Rod Seal Assembly ........... 18

6.5 Fit Seal Housing Sub-Assembly to Pum ...... 18

6.6 Remove Drive Rod Bearing Bush .................. 18

6.7 Fit New Drive Rod Bearing Bush.................... 18

6.8 Assemble Flushing Chamber ......................... 19

6.9 Remove Eccentric .......................................... 19

6.10 Remove Im eller............................................ 19

6.11 Fit Re lacement Drive End Bearing ............... 20

6.12 Fit Re lacement Im eller-End Bearing .......... 20

6.13 Assembly of Drive Shaft with Bearings into

Housing.......................................................... 21

7 FAULT FINDING GUIDE ............................... 22

8 PARTS LIST .................................................. 27

8.1 Air Pum Parts............................................... 27

8.2 Se arator Parts.............................................. 29

8.3 Pum Body and Delivery Valve Parts ............ 31

8.4 Bearing Housing and Air Pum Drive

Assembly Parts .............................................. 33

8.5 Isuzu/4JG1 Pum Unit, Core Build on Skid

Chassis .......................................................... 35

8.6 Isuzu/4JG1 Pum Unit, Build ‘A’ on Skid

Chassis .......................................................... 37

8.7 Isuzu/4JG1 Pum Unit, Build ‘B’ on Skid

Chassis .......................................................... 39

8.8 Isuzu/4JG1 Pum Unit, Build ‘C’ on Skid

Chassis .......................................................... 41

8.9 Isuzu/4JG1 Pum Unit, Su ersilent Cano y

Build on Skid Chassis .................................... 43

8.10 Deutz/F4L1011 Pum Unit on 4-Wheel

Chassis .......................................................... 45

8.11 Deutz/F4L1011 Pum Unit on Skid Chassis .. 47

8.12 Fast Tow Kit, O en Set .................................. 49

8.13 Fast Tow 4-Wheel Chassis ............................ 51

8.14 4-Wheel Site Chassis..................................... 53

8.15 Detroit 3105 on 4-Wheel Site Chassis, Build

‘B’ ............................................................ 55

8.16 Detroit 3105 on Skid Chassis, Bulid ‘B’ .......... 57

9 WIRING DIAGRAMS

9.1 Isuzu 4LE1 Engine/Cano y............................ 58

9.2 Fast Tow trailer Ligting Circuit........................ 59

9.3 Deutz - Wiring Diagram.................................. 60

9.4 Detroit - Wiring Diagram................................. 61

Selwood Seltorque S150 Manual

1 GENERAL INFORMATION

1.1 Installation

1. The um unit and its associated base late or

trolley mounting should be ositioned on a firm

horizontal latform, and in the case of ortable

units restrained from accidental movement.

2. If the um is fitted with ush-on ty e suction and

delivery s igots the hoses must be firmly secured

on these s igots with heavy duty clam s or cli s

ca able of withstanding the system o erating

ressure.

3. The integrity of the hose clam ing arrangements

should be checked at regular daily intervals in the

case of static installations or whenever the um

is re ositioned in the case of ortable units.

4. Similar recautions should be taken with clam s

securing multi le lengths of hose on installation

where long delivery and suction lines are involved.

5. Delivery hose and any associated i ework

should be ca able of withstanding the maximum

system o erating ressure. Suction hose should

be of the non-colla sible variety.

1.2 Operation

1. The um should only be o erated within the

s eed and ressure limits detailed in the o erating

handbook for the model in question.

2. If there is a danger of freezing, the fluid normally

retained within the um between o erating

cycles should be drained off through the drain ta s

rovided.

3. Where rotective ca s are used to revent

damage to the suction and delivery s igots during

storage or in transit they must be removed before

the um is started u .

1.3 Maintenance

1. Ins ection and maintenance rocedures are

detailed in the o erating and servicing manual for

the model in question.

2. Re lacement arts. Only the manufacturers or

factory a roved com onents should be used as

re lacement arts and where necessary they

should be fitted with the assistance of the s ecial

ur ose tools indicated in the o erating and

servicing manual.

3. All maintenance work must be carried out with the

um and engine/motor stationary.

1.4 I.C. Engines

1. Where I.C. engines are used to ower the um

they have been mounted in accordance with the

engine manufacturers recommendations and

adequate guarding rovided between the um

and engine.

2. Exhaust and Exhaust Pipes. If there is a risk of

accidental contact by o erators, the exhaust

system should be lagged or screened and the

outlet directed away from o erators or other

ersons likely to be nearby. Direct contact with

flammable materials of all ty es must be avoided.

The im ortance of adequate ventilation to ensure

removal of exhaust fumes when engines are

o erated in enclosed or covered accommodation

cannot be over-stressed. Engines should not be

run in hazardous ex losive atmos heres.

3. Access and Operation. Ensure that the o erator

can start, control and sto the engine easily by

making all controls readily accessible. Fit remote

controls if access is difficult. Follow the

instructions laid down in the Engine

Manufacturer's O erators Handbook for starting,

o erating and sto ing rocedures.

4. Fuel. In addition to the fire hazard associated with

fuel and lubricating oils, reventative action is

necessary with res ect to leakage, contamination

and bodily contact.

5. Electrical Connections. It is essential that earth

terminals are connected with an absolutely sound

earth oint and care should be taken to ensure

that the correct sized conductors are selected to

suit the current and distance to be carried.

1.5 Fitting Instructions or

Centa lex Couplings (Diesel

Engines)

IMPORTANT NOTES – OBSERVE STRICTLY:

The Centaflex Cou ling Assembly is su lied in a re-

assembled state and must be fitted to the um drive

shaft and engine flywheel in this state. On no account

should any of the com onents that make u the

cou ling assembly be dismantled unless it has become

necessary to service one of the com onent arts.

Ty ically, the most likely com onent to require

re lacement will be the rubber element and servicing

of this item is ex lained in Section 1.5.3 below.

The cou ling assembly consists of a central steel hub

whose outside diameter locates within a bore of a

rubber element and is secured within the element

using three ca screws that ass radially through its

outer diameter. In turn, the rubber element locates

onto three horizontal ins, equally dis osed on a PCD

and each secured to the face of a steel ada tor late

with ca screws. The ca screws securing both the

central steel hub and the horizontal ins are torque

tightened to the values shown in the table in Section

1.5.2 below.

Selwood Seltorque S150 Manual

The rubber element itself is free to slide on the

horizontal ins. It is therefore unnecessary to remove

the ca screws that secure the ins unless the ins

themselves have become damaged.

1.5.1 Preparation o the Centa lex Coupling

or Pump Removal

NOTE: Before commencing, mark the osition of the

cou ling assembly on the um drive shaft. Pay

articular attention to the size of the ga between the

back of the rubber element and the face of the steel

ada tor late. This ga has been factory set and is

maintained when the setscrew in the steel hub is

locked in osition.

1. In order to allow the um drive shaft to be

withdrawn from the steel hub of the cou ling, it will

be necessary to loosen the setscrew located in the

outside radius of the steel hub just in front of the

rubber element. The setscrew clam s the

cou ling assembly onto the to of the um drive

shaft key and it is not necessary to com letely

remove this screw.

2. Once the setscrew is loose the um drive shaft is

free to be withdrawn from the hub of the cou ling.

Note too that when the setscrew is loose the

cou ling assembly is free to slide in either

direction onto the um drive shaft or onto the

horizontal ins.

1.5.2 Centa lex Coupling Assembly

Sequence

1. The radial and axial screws connecting the rubber

element to the hubs must all be tightened to the

torque given in the table below, using a torque

wrench.

Tightening Torque

Centa lex

Size

Screw

Size Nm mK

16/22 M12 85 8,5

25/28 M14 140 14

30 M16 220 22

2. Tightening with a torque wrench is articularly

im ortant. Tightening by feel will not do as

ex erience has roved the tightening torques in

such cases are far too low. Tightening torques

which are too low will inevitably lead to slackening

of the screws in service and consequently to the

destruction of the cou ling.

3. Ensure that on tightening the screws, the

aluminium bushes in the rubber art are not

twisted at the same time, but sit straight. In order

to reduce friction between the screw head and the

aluminium art, a small amount of grease should

be a lied under the head of the screw before

fitting.

4. If necessary, use a suitable tool for a lying

counter ressure on the element to revent

twisting of the rubber art during tightening of the

screws. This is articularly im ortant with radial

screws, otherwise the cylindrical faces between

the aluminium insert and the hub will not engage

on the full area, but only on two corners. This will

inevitably lead to slackening of the screws and

subsequent destruction of the cou ling. If the

cou ling is su lied in a re-assembled state do

not dismantle it, but fit it in this condition.

1.5.3 Replacement o the Steel Hub and

Rubber Element

NOTE: Once the Centaflex cou ling has been

re ared in accordance with Section 1.5.1 above, it is

free to be removed from the horizontal ins on the face

of the ada tor late.

1. If it becomes necessary to re lace either the steel

hub or rubber element, the three radial ca s

screws must be removed in order to se arate the

two com onents. When removing these ca

screws it is recommended that the cou ling

assembly remain on the horizontal ins for ease of

their removal.

Once the three radial screws are removed, the steel

hub can be se arated from the rubber element.

Also at this stage the rubber element can be

removed from the horizontal ins of the ada tor

late.

3. Re lace the rubber element and/or steel hub as

necessary to refurbish the assembly.

4. Fit the rubber element onto the horizontal ins of

the ada tor late.

5. Insert the steel hub into the centre of the rubber

element and align the radial mounting holes with

ta ed holes in the hub.

Selwood Seltorque S150 Manual

6. Fit the three radial ca screws in accordance with

the instructions at Section 1.5.2.

7. The cou ling assembly is now re ared for the

re lacement of the um .

8. Once the um drive shaft is engaged in the

cou ling hub bore, set the osition of the cou ling

assembly to that reviously marked when Section

1.5.1 was erformed.

9. Tighten the setscrew that locks the steel hub of

the cou ling assembly to the um s drive shaft

key.

1.6 Electric Motors

1. All electrical connections should be made through

adequately rated conductors and starters.

Isolators and other associated switchgear should

be of adequate ca acity for the im osed ower

loadings. All electrical equi ment should be

adequately earthed.

2. Isolate the ower su ly before carrying out any

commissioning, servicing or maintenance work on

the um or electric motor.

3. Where electric motors are to be o erated in

hazardous or ex losive atmos heres they should

be of the flame roof enclosure ty e a ro riate to

that atmos here.

You are requested to take such ste s as are

necessary to ensure that this information is made

available to all those involved with the use of our

roducts. This information must be made available not

only to your own em loyees at their work lace, but

also to anyone who may urchase or otherwise

acquire (hire) such roducts for use in his own

work lace.

It is our intention constantly to review our obligations

under the Act and we will be issuing from time to time

further information with regard to the safe a lication,

use, ins ections, and service associated with our

roducts.

1.7 Fitting Instructions or Fenner

Couplings (Electric Motors)

1. Adjust osition of um on chassis until the inside

faces of the cou ling flanges are arallel to each

other. The distance between the faces should

measure from 24 to 29mm (15/16” to 1 1/8”).

Whilst adjusting the um ’s osition, it is also

necessary to achieve alignment of the shaft

centre-lines within 1.5mm (1/16”) of each other by

laying a straight edge cross the two flanges at

several ositions around their circumferences.

Fully tighten the nuts immediately the cou ling

flanges are correctly aligned. Recheck alignment

after tightening.

2. The flexible cou ling assembly should now be

com leted. O en-out the tyre and fit over the

cou ling flanges ensuring the tyre beads seat

ro erly on the flanges. To ensure ro er

seating, it may be necessary to strike the outside

diameter of the tyre with a small mallet. When

seated there should be a ga between the ends of

the tyre of about 1/8” (3mm). Tighten clam ing

ring screws in flange alternately and evenly

(a roximately half a turn er screw) working

round the flange until 17lbf ft (2.35kgf m) torque is

achieved.

1.8 Seltorque S150 Standard Data

Ca acity (max) 400M3/h

88,000 UK gal/h

Delivery Head (max) 21.3m

70ft

Self Priming Lift (max) 8.8m H20

29ft H20

Solids Size (max) 100mm

4in

Air Handling Ca acity:

Single 24l/s

Prime 50ft3/min

Twin 48l/s

Prime 100ft3/min

Pum S eed 1600r m Max

Port Size BS.4504 Table 6 150mm

6in

2 ROUTINE MAINTENANCE

Lack of routine maintenance is the most frequent

reason for the breakdown of um s. We earnestly

advise users to ensure that at least the following

actions are taken.

1. Check these three oil levels daily:

a) Engine oil.

b) Bearing housing oil.

c) Flushing chamber oil.

2. Always drain water from the um in cold weather

when it is not running. Drain:

a) Pum body.

b) Delivery valve chamber.

c) Both sides of air um (4 drain ta s if twin

rime).

3. Do NOT run the um if significant quantities of

water esca e through the exhaust valve of the air

um . This um is designed to handle moisture-

laden air, but not to um a high ercentage of

water. Refer to servicing instructions for further

advice.

4. Do NOT run the um if malfunction is sus ected

in any of its arts. In articular, it must

immediately be serviced if the level of oil in the

flushing chamber varies daily, or if the oil becomes

contaminated with the um ed fluid.

5. A hose strainer should always be fitted to the free

end of the suction line if there is a ossibility of

oversized solids entering the um . The

dimensions of rocks, ebbles, etc. must not

exceed 100mm (4"). Larger soft solids, however,

of the ty e found in abattoir duties, for exam le,

will ass freely through the um . Refer to

Selwood Ltd if in need of advice in this connection.

Selwood Seltorque S150 Manual

6. As loss of rime and indeed loss of on-stream

erformance can easily arise as the result of

leaking i ework joints, we recommend that all

line fittings associated with the um should be

checked eriodically for air-tightness.

7. It is most Im ortant to use the correct fuel oil in the

engine. Make sure that it is a ro riate for the

weather conditions (summer or winter) and that it

is clean and free from water and foreign matter.

Unsatisfactory running erformance, excessive

wear and damage can all result from the use of an

Incorrect or contaminated fuel.

8. Periodically check the tension of all nuts and bolts,

es ecially those securing the engine and um to

the chassis.

9. Pum servicing must always be carried out in

accordance with the instructions given in this

manual. Only com onents su lied and a roved

by Selwood Ltd should be used. It is advisable to

hold a small stock of s are arts to cover

breakdown circumstances. The Com any will be

leased to give advice in this connection.

10. Engine servicing must always be carried out in

accordance with the instructions given in the

manufacturer's manual. Do not hesitate to contact

Selwood Ltd if the need for further advice arises.

11. Please contact Selwood Ltd in the event of

ex eriencing difficulty when servicing. The

com any will also be very leased to give advice

in connection with the machine's installation,

o eration and maintenance.

12. All ractical work must be carried out in

com liance with the Health and Safety at Work

Act, 1975. Always start the engine in accordance

with the manufacturer's instructions.

NOTE: If the above advice is followed, the likelihood

of an ex ensive break down will be greatly diminished.

The um should give a long and trouble free life if

these measures are ut into effect.

3 LUBRICATION AND

FASTENING TORQUES

3.1 Pump Lubrication

It is most im ortant to maintain the correct levels of oil

in the flushing chamber and bearing housing, and to

ensure that the oil is of the recommended quality and

is free from contamination. Selwood recommend the

use of the following BP/Castrol roducts, which should

be a lied as er the following table. In some

territories, the following grades may be known under

differing trade names, lease contact Selwood if

roblems occur in identifying the correct roduct.

COMPONENT BP GRADE

ENGINES Vanellus C5 Global

Bearing Housing C5 Global

Flushing Chamber C5 Global

Actuator Bore Castrol Rustilo 431

Im eller Bore Castrol Rustilo 431

Pa er Gaskets BP Energrease LS-EP2

Axle Shafts BP Energrease LS-EP2

Axle Pivot Assembly BP Energrease LS-EP2

M10 Screws - Port Plate

to Diffuser

Castrol O timoly Paste

DRAIN INTERVAL

COMPARTMENT

HOURS MONTHS

Engine Sum 250

Bearing Housing

Flushing Chamber 250 – 500

Actuator Bore

Im eller Bore

Shaft Sleeve Bore

ON ASSEMBLY

Pa er Gaskets

Axle Shafts

Axle Pivot Assembly

ON ASSEMBLY

M10 Screws - Port

Plate to Diffuser ON ASSEMBLY

3.1.1 Commissioning Period

Drain both um chambers and engine within 100-150

running hours of commissioning either a new, or rebuilt

um , and refill with new oil to level lugs.

Flushing chamber ca acity about 2.3litres (4 ints).

Bearing housing ca acity about 3.5litres (6¼ ints).

Engine sum – Refer to Engine Instruction Book.

3.1.2 A ter Commissioning Period

If the um is driven by a diesel engine, the oil in both

um chambers should be drained and renewed

simultaneously with the time schedule laid down by the

engine manufacturer. This will usually require the

um oils to be drained and re laced every 250

running hours. Under no circumstances should the

eriod for the um exceed 500 running hours.

3.2 Fastening Torques

Failure to tighten threaded fasteners correctly can

easily lead to assembly breakdown. It is very

im ortant, therefore, when carrying out the instructions

in this manual, to achieve the a ro riate tensioning

torques. In some cases, s ecific requirements are

described in the instructions, which must always be

im lemented. The following torques, in articular,

must be a lied.

Selwood Seltorque S150 Manual

Tightening

Torques

Item

lb t kg m

(F29)(F30) M16 Pum /Engine/Fuel

Tank to Chassis Fixings 180 25

(D36) Actuator Ca Screw

0015975000 60 8.3

(A22) Ca Screw M12

9005120552 60 8.3

(C01) Im eller Screw

9000160402 80 11

Air Pum Drive rod (D37) to Small

End of Connecting Rod (D26) - M8

Fixing (D27) to (D38)

21 2.9

4 CONDITIONS OF WARRANTY

For a eriod of six months from delivery of any

Selwood um to the first user thereof, or twelve

months from the des atch of any such um by

Selwood, whichsoever eriod is the shorter, Selwood

will re air or, at its o tion, re lace any com onent

which in the o inion of Selwood has failed due to

defective workmanshi or materials.

This warranty does not a ly to:

a) the driver or any accessories or ro rietary fittings

whatsoever;

b) any um which, in the o inion of Selwood, has

been altered, used, maintained, serviced or stored

otherwise than in accordance with Selwoods'

instructions and rofessional ractice;

c) any um from where the serial numbers have

been removed or altered;

d) fair wear and tear;

e) consequential loss or damage.

5 MAJOR SERVICING

5.1 Air Pump Maintenance

5.1.1 Delivery and Suction Valves (A07)

Failure of the um set to rime quickly or to discharge

the ex ected volume of air, may sim ly be due to faulty

valve o eration.

To ins ect and service, roceed as follows:

1. Remove air hose (single rime item (A01), twin

rime items (A39/40)) from suction valve box

(A03/A41), after loosening relevant hose cli s

(A02).

2. Note the orientation of the suction valve box (A03)

and exhaust cover (A04) before commencing.

Remove exhaust cover (A04) and suction valve

box (A03) by releasing nuts (A05) and s ring

washers (A06).

NOTE: The above actions allow the condition of the

two valve rubbers (A07) to be checked. Do NOT

attem t to remove valve studs (A08). If valve rubbers

are damaged, re lace with new com onents. Pull old

valves off stud heads, and discard.

3. Check and, if necessary, clean valve seats in

outer um body (A15) and valve box (A03).

Smear heads and grooves of studs with soft soa

and ush on new valves ensuring that they seat

correctly.

4. The valve assemblies can now be re laced by

reversing Instructions 1 and 2 of this rocedure. It

is advisable to fit new gaskets (A30).

5.1.2 Actuator Valve (A16)

Another reason for the um set failing to rime

efficiently or to handle the ex ected volume of air,

could be malfunction of the actuator valve (A16).

To ins ect and service, roceed as follows:

1. Remove nuts (A11), s ring washers (A12),

washers (A13) and screws (A14), allowing outer

um body (A15) to be removed com lete with

attached delivery valve assembly. The actuator

valve (A16) may now be examined. If it fails to

seat efficiently on actuator (A20) or is in any way

damaged, it should be ulled off the actuator nut

and discarded.

2. Whilst the actuator valve (A16) is removed, it is

advisable to examine the condition of the valve

seat in the actuator (A20), and also to check the

security of the actuator screw (D36). This should

be checked and tightened to 60lbf ft (8.3kgf m)

torque.

3. To re lace actuator valve (A16):

a) Smear soft soa on the conical end and

groove of actuator screw (D36).

b) Ease new valve rubber into osition ensuring

that it seats correctly.

NOTE: It is advisable to examine the condition of

actuator seal (A18) whilst it is ex osed. Refer to

Section 5.1.3 Actuator Seal (A18) for servicing

instructions.

4. To re lace outer um body assembly, fit and

evenly tighten screws (A14), washers (A13),

s ring washers (A12) and nuts (A11), by

sequentially turning each screw a small amount

until they are all fully tensioned.

NOTE: It is im ortant that the outer diameter of the

actuator seal (A18) should be evenly clam ed.

5.1.3 Actuator Seal (A18)

A further reason for the um set failing to rime

efficiently or to handle the ex ected volume of air,

could be a faulty actuator seal (A18).

To ins ect and service, roceed as follows:

1. Remove outer um body (A15) com lete with

delivery valve assembly. Remove actuator screw

(D36).

Selwood Seltorque S150 Manual

2. Set actuator to to dead centre (maximum

distance from inner um body), by rotating

engine shaft with starting handle. Using a tool that

will not cut the rubber (such as a blunt

screwdriver) and a lubricant (soa solution),

remove actuator seal (A18) by rising it from the

inner um body (A19).

3. Remove actuator (A20) com lete with seal from

drive rod (D37).

4. To renew actuator seal (A18):

a) Remove the failed com onent from the

actuator.

b) Insert firstly one side and then the other into

the actuator groove, using a blunt tool that will

not cut the rubber.

NOTES: The seal is handed and will not enter the

inner um body (A19) if fitted the wrong way round.

The correct assembly osition for actuator seal (A18)

is with the smaller diameter of its conical outer surface

towards the inner um body (A19). It will be seen

that the housing in the body is ta ered in the same

direction as the external surface of the seal.

5. At this stage it is advisable to examine the

condition of actuator neck seal (A21). This

com onent should be re laced if any s lits are

evident on its visible surface. Refer to Section

5.1.4 Actuator Neck Seal (A21).

6. Smear soft soa on the outside section of new

actuator seal (A18). Lightly grease actuator bore.

Position actuator/seal assembly on drive rod

(D37), locate actuator screw (D36) and tighten to

60lb ft (8.3kgf m) torque.

7. Re lace actuator valve if removed (A16) first

smearing soft soa on the conical end and groove

of actuator screw (D36). The new valve should be

eased into osition by hand.

8. Before fitting outer um body (A15), reci rocate

the actuator by fitting and rotating the engine's

starting handle about ten times to encourage

centralisation of the connecting rod bearings.

During this rocedure, the actuator seal (A18) is

likely to rotate slightly in the inner um body

(A19). Sto shaft rotation when actuator is at

bottom dead centre (minimum distance from inner

um body).

9. Seat outside section of actuator seal in inner

um body recess by gently ta ing with a non-

metallic mallet.

10. Re lace outer um body assembly, and fit and

evenly tighten screws (A14) washers (A13) s ring

washers (A12) and nuts (A11), by sequentially

turning each screw a small amount until they are

all fully tightened. It is im ortant that the outside

diameter of the actuator seal (A18) should be

clam ed evenly.

5.1.4 Actuator Neck Seal (A21)

Another reason for the um set failing to rime

efficiently or to handle the ex ected volume of air,

could be failure of the actuator neck seal (A21).

To investigate and service, roceed as follows:

1. Remove outer um body (A15) com lete with

delivery valve assembly, and actuator (A20) with

actuator seal (A18) as directed in Section 5.1.3

Actuator Seal (A18) Instructions 1 and 2.

2. Release hose cli (A02) allowing air hose to be

disconnected from suction valve box (A03).

Screws (A22) should then be removed, leaving

washers (A23) in inner um body (A19).

3. The inner um body can now be ulled by hand

from the bearing housing, if necessary twisting to

overcome any tendency of the seal (A21) to stick

to drive rod (D37). Remove and discard failed

seal.

4. Smear new actuator neck seal (A21) with soft

soa to assist fitting, osition in inner um body

(A19) and ush both com onents over drive rod

(D37) using assembly tool (Part No. 0015102000)

smeared with soft soa . Check that washers

(A23) are in lace, and fit and fully tighten screws

(A22). The heads of these screws should be fully

contained within the recesses in the inner um

body.

5. Reassemble remaining com onents in

accordance with Section 5.1.3 Actuator Seal (A18)

Instructions 6 to 10, inclusively.

5.1.5 Drive Rod Seal Assembly and Bearing

(A25 and A28)

If oil leaks from orts in housing (A24) it is robable

that seal assembly (A25) is excessively worn. Such a

condition may also indicate that drive rod bush (A28)

should be re laced.

To ins ect and service, roceed as follows:

1. Drain oil from bearing housing by removing filler

ca (D08) and drain lug (D13).

2. Remove air um com onents in accordance with

Section 5.1.3 Actuator Seal (A18) Instructions 1

and 2, and to Section 5.1.4 Actuator Neck Seal

(A21) Instructions 2 and 3.

3. Being careful not to damage the flat sealing faces

of housing (A24), carefully withdraw housing

com lete with its bearing and sealing com onents

from bearing housing (D06) and drive rod (D37).

4. Examine condition of li and distributor seals

together with bearing. If either are worn or

damaged, we recommend that a new housing

(Part No. 0010905000) com lete with seal

assembly and bearing (A28) should be ordered

and fitted. However, individual com onents can

be renewed in accordance with the following

instructions.

5. To re lace drive rod bearing (A28) carefully

remove circli (A26) allowing seal com onents to

be ushed from housing with blunt unch or drift

from bearing end. The drive rod bearing can now

be removed using bearing drift (Part No.

0015168000) and the new com onent ressed

into osition so that one face is flush with the end

of the housing.

Selwood Seltorque S150 Manual

6. Ensure that seal com onents are assembled in

accordance with the following instructions.

a) The wi er seal (A34) is first assembled to the

drive rod seal carrier (A32) using wi er seal

insertion tool (Part No. 0010103000) ensuring

the correct orientation.

b) Then the internal distributor seal (A33) is

offered u to the bearing and seal housing

(A24) ensuring again the correct orientation

and ushed into lace with the drive rod seal

carrier (Part No 0015195000) together with

wi er seal (A34)) and the whole ressed into

lace with the wi er seal insertion tool (Part

No. 0010103000). Care must be exercised

when re lacing circli (A26) to ensure that the

li of the wi er seal (A34) is not damaged by

the hand tools used. Refer to Section 6.4.

7. Before re lacing bearing/seal housing assembly,

check condition of drive rod, articularly if new

bush (A28) has been fitted. If surface is

significantly worn, the drive rod should be

re laced in accordance with instructions given in

Section 5.4 Maintenance of Flushing Chamber, Air

Pum Mechanism, Drive Cou ling, Drive Shaft

Bearings and Li Seal. S ecifically Section 5.4.2.

8. Assembly tool (Part No. 0015101000) must be

used when re lacing bearing/ seal housing

assembly to ensure that the wi ing edges of the

seal assembly (A25) are not damaged. The drive

rod must be smeared with clean oil to assist this

rocedure. See Section 6.5. Gasket (A27) must

be renewed. Always use a com onent su lied

by Selwood Ltd. Ensure that orts in housing

(A24) are in the 3 and 9 o'clock ositions.

9. Reassemble remaining um com onents in

accordance with Section 5.1.4 Actuator Neck Seal

(A21) Instruction 4 and 5.1.3 Actuator Seal (A18)

Instructions 6 to 10, inclusively.

10. Re lace drain lug (D13) together with sealing

washer (D14) and refill bearing housing (D06) with

clean oil to level of lug (D08) and re lace lug

together with ‘O’ ring (D07). Refer to Section 3.1

Pum Lubrication for details of the oil required for

the Bearing Housing.

5.2 Separator Maintenance

5.2.1 Float (B11)

If water in significant quantities continuously asses

through the exhaust valve (A07) of the air um , it is

robable that the float (B11) is in need of re lacement.

To ins ect and service, roceed as follows:

1. Disconnect air hose (A01) by loosening hose cli

(A02), and twin rime (A40) by loosening hose cli

(A02).

2. Remove nuts (A11) and washers (A12) and lift off

se arator ca (B01) com lete with eel

valve/u er diffuser assembly (B01) to (B21),

inclusively.

3. Examine condition of float (B11) and re lace with

new com onent if unctured or significantly worn.

4. Check condition of eel valve rubber (B21) and

bush (B07) re lacing them, if necessary, in

accordance with Section 5.2.2 Peel Valve (B21).

Also check for de osits of solids likely to interfere

with the smooth working of the float system.

5. When fitting a new float, ensure that it is securely

tightened against nut (B12). During this rocedure

the float should be ositioned on the rod so that

the o erating late (B15) with its associated eel

valve fasteners is just clear of the central clam

bar screws (B16), when the float is located in the

u er diffuser cone.

6. If all com onents are seen to be in satisfactory

condition, re lace se arator ca assembly,

washers (A12) and nuts (A11). Alternately tighten

each nut a small amount to ensure that the ca is

ulled down evenly. Do not over tighten. Re lace

air hose(s) and re-tension hose cli (A02).

5.2.2 Peel Valve (B21)

If significant quantities of water are discharged from

the exhaust valve (A07) of the air um , and the float

(B11) is in satisfactory condition, it is robable that a

fault exists in the eel valve assembly.

To ins ect and service, roceed as follows:

1. Remove se arator ca sub-assembly (B01) to

(B21) and unscrew float (B11) and nut (B12).

2. Release screws (B09) and s ring washers (B10)

to allow u er diffuser/valve assembly to be

withdrawn.

3. Remove screws (B04) and sealing washers (B05)

to allow u er diffuser (B06) to be removed from

the ort late sub-assembly.

4. Examine condition of eel valve rubber (B21) and

air orts In late (B03) which it should com letely

cover when the float is fully raised. If the rubber

does not seat correctly, is distorted, or in any way

damaged, it must be removed and discarded by

releasing screws (B16).

5. To fit new eel valve rubber (B21):

a) Carefully clean existing arts thoroughly,

es ecially surfaces of ort late (B03), and

clam bars (B19) and osition new rubber on

late.

b) Assemble screws (B16), clam bar (B19),

clam bar seal (B20), washer (B18) and nuts

(B17) in sequence shown on drawing.

Alternately tighten each nut a small amount to

ensure that even clam ing ressure is

roduced. Correctly tightened nuts will not

cause the clam bar to distort the rubber.

6. Carefully attach the ends of the valve rubber (B21)

to the o erating late (B15), noting that the

com onents and method of assembly are identical

to those described in Instruction 5 of this Section

exce t that clam bar seal (B20) is omitted.

Again, ensure that the nuts are not over tightened.

Selwood Seltorque S150 Manual

7. After com leting Instructions 5 and 6 of this

Section, check that the eel valve rubber is

ca able of closing all of the air holes in ort late

(B03) when o erating rod (B13) is square to the

late and fully lifted.

8. Check condition of bush (B07) in u er diffuser

B06) and re lace, together with cli (B08) and

nitrile washer (B37), if significantly worn.

NOTE: The o erating rod (B13) is normally a slack fit

in the bush.

9. Position ort late sub-assembly on u er diffuser

(B06), fit washers (B05) after checking that they

will seal efficiently and fully tighten screws (B04).

Reassemble nut (B12) and screw float (B11) on to

o erating rod and tighten securely in accordance

with Section 5.2.1 Float (B11) Instruction 5.

10. Recheck o eration of eel valve rubber (B21) to

ensure that it fully covers air orts in late (B03)

when the float is located in the u er diffuser

cone. In this osition there should be a ga of

3.5 mm between the heads of the centre clam

bar screws (B16) and the o erating late (B15). If

the dimension is incorrect, adjust osition of float

on o erating rod.

11. Examine condition of gasket (B02) and renew, if

necessary, before installing between ort late

(B03) and se arator ca (B01). Fit s ring

washers (A12) and screws (A11) each of which

should be sequentially turned a small amount until

fully tightened. Gasket (B02) must be evenly

com ressed.

12. Re lace se arator ca sub-assembly in

accordance with Section 5.2.1 Float (B11)

Instruction 6.

5.2.3 Deposits o Solids†‡

When handling liquids containing solids ca able of

adhering to roduct wetted surfaces, it is advisable

eriodically to check the valve system in the se arator.

To ins ect and service, roceed as follows:

1. Remove se arator ca sub-assembly in

accordance with Section 5.2.1 Float (B11)

Instructions 1 and 2, allowing se arator body

(B22) together with lower diffuser (B24), to be

lifted off the suction tube (B27).

2. Remove any de osits of scale from lower diffuser

(B24) and check condition of welds securing its

circular bottom to the erforated cylinder.

Remove any solids that may have accumulated in

the suction tube (B27), renew gasket (B25) and

re osition se arator body/lower diffuser assembly

on suction tube.

3. Remove de osited materials from surfaces of

u er diffuser (B06) and note, in articular,

condition of welds securing cone and disc to

erforated diffuser body. Also examine diffuser

† Use lower Diffuser (Part No. 00-15-038100) for sludge

handling duties. This is recognised by holes in the base as

well as around the side.

‡ Use lower Diffuser (Part No. 00-15-038000) for other

a lications where no solids are resent which can adhere to

the internal surfaces.

bush (B07) and o erating rod (B13), and re lace if

significantly worn in accordance with Section 5.2.2

Peel Valve (B21) Instructions 3 to 11. Remove all

de osited solids that would interfere with the free

movement of the mechanism, obstruct the

assage of air across the ort late holes, or

inhibit the flow of water (through the holes in the

u er diffuser, for exam le).

4. Once it is established that all com onents are in a

satisfactory condition and are free from scale,

re lace se arator ca sub-assembly in

accordance with Section 5.2.1 Float (B11)

Instruction 6. Any re-assembly work carried out

on the eel valve assembly should be in

accordance with Section 5.2.2 Peel Valve (B21)

commencing Instruction 1.

The fabricated se arator chamber (B35) (Part No.

0015105100 is normally utilized when the um is

fitted with Twin Prime where the larger volume allows

better se aration of air from the um ed liquid.

The two to fixings attaching the se arator chamber

(B35) to the um body (C09) are located inside the

chamber necessitating (B36) M12 dome nuts and

s acer washers to rotect the stud threads.

5.3 Impeller, Mechanical Seal and

Delivery Valve Maintenance

5.3.1 Impeller (C04)

Generally s eaking, it is only necessary to remove the

im eller if the existing com onent has become

severely abraded, or if access to other rotating arts is

required.

To remove and re lace, roceed as follows:

1. Remove air hose item (A01), twin rime item

(A39) and (A40) from se arator ca (B01), after

loosening relevant hose cli (A02).

2. Remove nuts (A11) and washers (A12), and lift off

se arator ca (B01) com lete with eel

valve/u er diffuser assembly, (B01) to (B21)

inclusively.

3. Lift se arator body (B22) com lete with lower

diffuser (B24) off suction tube (B27) or (B35)

allowing (dome) nuts (B36) or (B29) and s ring

washers (B39) or (B30) to be released.

4. Withdraw suction tube (B27) or (B35) and gasket

(B28) after removing nuts (B29) and associated

s ring washers (B30).

5. Drain oil from flushing chamber by removing filler

ca assembly (D08) and drain lug (D34). The

condition of the oil will indicate whether or not the

mechanical seal has been functioning correctly. If

contamination is evident, the mechanical seal

must be re laced in accordance with Section 5.3.2

Mechanical Seal (C08).

6. Remove im eller screw (C01) and washers (C02)

and (C03), and withdraw im eller (C04) from drive

shaft (D17). To remove the screw, it will be

necessary to lock the im eller by means of a

wooden block wedged between the im eller

blades and um body (C09).

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