Lincoln 83668 User manual

Section

Page

- C8

MAR  98

Printed in U.S.A.

One Lincoln Way

St. Louis, Missouri 63120-1578

(314) 679-4200

FORM 402817

- 127I

Model No. 83668

AIR OPERATED GREASE PUMP

Series "F"

TO FILL RESERVOIR

Use Manual Filler Pump 81834 to fill reservoir

through the filler fitting in the pump body. Attach

coupler on delivery hose to filler fitting. Stroke

filler pump handle until lubricant weepage is noted

at air vent hole in the reservoir (lower portion of

follower must rise beyond air vent hole to expel

entrapped air from lubricant). NOTE: When filling

the reservoir, caution should be used as extreme

pressure can cause damage to reservoir and

follower assembly.

TO PRIME SYSTEM

SUPPLY LINES: After pump reservoir has been

filled with recommended lubricant, remove all

plugs in dead ends of the injector manifolds

and supply lines. Operate pump until lubricant

flows from any plug opening. Close opening

with plug. Continue operating pump until

lubricant flows from another plug opening.

Repeat this procedure until all supply lines are

primed.

FEEDER LINES: Fill each feed line with lubricant

before connecting tines to outlet of injectors

and bearings. This will prevent having to cycle

each injector for every inch of feeder line

between injector and bearing.

INJECTORS: Check each individual injector for

proper operation.

The total quantity of lubricant needed for the lubrication

cycle of the system must not exceed the lubricant

discharged per pump stroke.

RATIO

OUTPUT

PER

STROKE

(CU. IN.)

RESERVOIR

CAPACITY AIR

INLET LUBRICANT

OUTLET

LUBRICANT OPERATING PRESSURE (PSI)

TYPE OF

SYSTEM MINIUM MAXIMUM RECOMMENDED

20:1 * .450 4 -1/4 pints

(123 cu. in.) 1/4" NPT

Female 1/4" NPT

Female SL-32

SL-33

1,200

with

60 PSIG Air

3,500

with

175 PSIG Air

1,500

with

75 PSIG Air

*Based on lubricants that are free from entrapped air. Lubricants that are aerated will reduce output of pump. The

83668 Pump is used as the pumping unit for a Centralized Lubrication System having a single circuit of SL-32 or

SL-33 Injectors. It is an air-operated, single-stroke, spring-return pump that discharges .450 cu. in. into the

circuit for each pump cycle.

PAGE 2 FORM 402817

IMPORTANT:

Pump must be installed in a vertical position.

OPERATION OF THE PUMP

Lubricant in the 247210 Translucent Reservoir

flows into the cavity in the 247484 Bushing and

Plunger Assembly.

Compressed air entering the bottom of the

247476 Air Cylinder (1/4" N.P.T. female) moves

the 247478 Piston upward. As the piston

moves upward, the plunger is also moved

upward into the bushing. As the plunger moves

upward, it moves the charge of lubricant from

the bushing cavity through the 84175 Outlet

Check to the outlet of the pump.

When the air pressure to the 247476 Air Cylinder

is relieved, the 247481 Piston Spring moves the

piston and plunger downward. In its extreme

down position, the plunger has retracted below

the bushing port, permitting lubricant to flow into

the bushing cavity.

©Indicates Change

WHAT TO DO IF:

Pump loses prime. - Check lubricant supply.

System fails to cycle and calculated system planning has been followed. -- Lubricant may be leaking by the 66250

Ball Check or the 34445 Packing in the 84175 Check and Vent Assembly. Remove these parts and examine for

presence of foreign particles. Clean, or replace parts if worn or damaged.

Pump fails to operate. - Check air supply. Failure of Injectors to cycle can be caused by a leak in the supply line.

FORM 402817 PAGE 3

NOTE:

In reassembling the 84175 Check and Extension

Assembly, the vent pressure must be reset. Vent

pressure can be varied by the Adjusting Screw,

14288. The recommended pressure setting is 25

P.S.I.G. minimum to 75 P.S.I.G. maximum. An

improper setting will affect the pump efficiency.

Assemble 14288 with non-hardening Loctite or stake

threads after adjusting vent pressure.

LOW LEVEL CUT-OFF KIT NO. 83671 MAY BE USED

AS AN ALARM OR SIGNAL DEVICE WHEN

LUBRICANT DROPS BELOW AN ACCEPTABLE LEVEL.

SERVICE PARTS

*These components available in 247623 Repair Kit

PART QTY. DESCRIPTION

NO.

14288 1 Ball Stop

14290 1 Check Body

14305 1 Bushing

*31020 1 Gasket

*31086 1 Gasket

*34174 1 O-ring (Nitrile)

*34211 1 O-ring (Nitrile)

*34274 1 Gasket

*34368 1 O-ring (Nitrile)

*34431 1 O-ring (Nitrile)

*34445 1 Gasket

*34454 1 Follower Packing

45936 1 Cover Cap

48382 1 Washer

48467 2 Washer

51082 1 Nut

55270 1 Follower Spring

*56106 1 Spring

62493 1 Extension Tube

*66250 1 Ball

66725 1 Retaining Ring

68797 1 Plug Button

69034 1 Retaining Ring

*69295 1 Filter

84175 1 Check Assembly

92441 1 Filter Fitting

92684 1 Outlet Bushing Extension

Assembly

247210 1 Reservoir (Acrylic)

247476 1 Air Cylinder

247477 6 Machine Screw

247478 1 Piston

247481 1 Spring

*247483 1 U-Cup (Nitrile)

247484 1 Bushing and Plunger

Assembly

©*252497 1 O-ring (Nitrile)

PAGE 4 FORM 402817

RETAIN THIS INFORMATION FOR FUTURE REFERENCE

When ordering replacement parts, list: Part Number, Description, Model Number and Series Letter.

LINCOLN provides a Distributor Network that stocks equipment and replacement parts.

TYPES OF INSTALLATIONS

Frequency of lubrication cycle can be controlled mechanically, electrically or manually.

ELECTRICAL CONTROL

Electrical time switch opens three-

way solenoid salve, permitting air

to flow to pump forcing air piston

forward and lubricant through

supply line to injectors. When valve

closes, air exhausts back through

valve, and spring in pump returns

air piston, completing lubrication

cycle. Frequency of cycle can be

set as desired.

MANUAL CONTROL

Opening three-way valve for a

minimum of 10 seconds permits air

to flow to pump forcing air piston

forward and lubricant through supply

line to injectors. When valve is closed,

air exhausts back through valve, and

spring in pump returns air piston,

completing lubrication cycle.

MECHANICAL CONTROL

When using mechanical motion of

machine to control lubrication

frequency, three-way valve is

engaged by cam, permitting air to

pass through valve to pump, forcing

air piston forward and lubricant

through supply line to injectors.

When the valve is disengaged, air

exhausts back through valve, and

spring in pump returns air piston,

completing lubrication cycle. Cam

dwell on three-way valve must be

arranged for a minimum of 10

seconds.

When mechanical motion of machine

is too rapid to be used as a source of

control for frequency of lubrication

cycle, a cycle timer with adjustable

settings may be used. See separate

instructions for Cycle Timer 82703.

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