Atlas Copco PB 14 D User manual

Repair instruction No. 171.5/94

PB 14 D, PB 14 C 2

PAGE

2Seite

1 Remove the catcher housing (8), the

rubber ring (7), and the recoil absorber (6)

from the anvil housing (2).

2Expel the anvil (4) together with the recoil

ring (5) from the housing (2) by hitting it

lightly with a hammer.

3Remove the location ring (10) and the

O–rings (11 and 12) from the hammer

case (13).

4Remove the O–ring (9) from the anvil

housing (2), place this upon a press table,

and press the liner (1) from the housing

using a mandrel.

Only remove the liner if it is damaged or

badly worn. Only let authorized personnel

with proper tools remove the liner.

1 Remove the six Allen screws (1) together

with the washers.

2Remove the hammer case (2) from the

bearing housing (3).

Attention! Make sure you lose no parts that

might fall from the machine!

1 Pull the complete inclined shaft bearing

assembly (5) from the hammer case (1).

2Remove the outer ring (6) from the

inclined shaft bearing assembly.

3Remove the outer ring (4), the washer (3),

as well as the eight disc springs (2) from

the hammer case (1).

In case that the outer ring is stuck in the

hammer case, unscrew and remove the

edn cap (7) and press the ring out from

this side.

Dismantling the

anvil assembly

Removing the

hammer case

Removing the

inclined shaft

bearing

assembly

1 2

34 65 7

1110

8 9

1 32

1 32 4

5 6

Repair instruction No. 171.5/94

PB 14 D, PB 14 C 3

PAGE

3Seite

1 Press the complete inclined shaft bearing

assembly (3) from the taper roller bearing

(1) and the gear (2).

2Turn the inclined shaft bearing assembly

over and press the taper roller bearing (4)

and the layshaft (6) from the inclined shaft

bearing with the service tool (7)

(9170 3023 30), as shown in illustration.

1 Remove the piston (4) from the hammer

case (1). If necessary, hit the case lightly

with a plastic hammer.

2First remove the bearing clip (5) from the

piston, then take out the gudgeon pin (3).

3Remove the nu–lip–seal (2) with a

screwdriver.

1 Loosen the striker (1) by hitting the

hammer case (4) lightly with a plastic

hammer and remove it.

2Remove the nu–lip–seal (3) as well as the

two striker bearing clips (2) from the

striker.

The barrel (2) should only be removed if

damaged or badly worn.

1 Release the three screws (4) from the

barrel retainer (3) and remove it.

2Press the barrel (2) from the hammer

case (1).

Dismantling the

inclined shaft

bearing

assembly

Removing and

dismantling the

piston

Removing the

striker

Removing the

barrel

4 65 2 1

51 2 3 4

321 4

Repair instruction No. 171.5/94

PB 14 D, PB 14 C 4

PAGE

4Seite

1 Unscrew and remove both brush covers

(1) from the motor housing.

2Push the spring (2) aside with a pair of

pliers and pull the carbon brushes (3) from

their holders.

3Release the locating screws (4) and

remove the carbon brushes with the lead.

4Release the two securing screws (6) and

remove the terminal bracket (7).

5Disconnect the leads from the terminal

block (5) and remove it.

1 Release the screws of the handle locking

plates (4), lift the plate with a screwdriver,

and remove it.

2Lever off the handle support (3) with a

screwdriver and remove the rear handle

from the housing.

3Remove the handle support (3) and the

handle support rubbers (2) from the rear

handle front (7).

4Unscrew and remove the rear handle

grip (5).

5Depress the locking button of the switch

(6) and remove the switch from the rear

handle front (7).

1 Remove the six Allen screws (4) and

remove them together with the inserts (3).

2Separate the motor housing (2) from the

bearing housing (1).

Removing the

carbon brushes

and the electric

supplies

Dismantling the

rear handle

assembly

Separating the

motor housing

from the bearing

housing

765

321 4

Repair instruction No. 171.5/94

PB 14 D, PB 14 C 5

PAGE

5Seite

1 Remove the brush lead assembly (5).

2Release the four Allen screws and remove

the field case (6) from the bearing

housing (1).

3Tap the field case (6) lightly with a hammer

and remove it from the field coil (4).

4Remove the baffle gasket (2).

5Pull the baffle (3) from the field case and

remove the field coil (4) from the case (if

necessary, tap it lightly to remove).

1 Remove the four Allen screws (4). Tap the

bearing housing lightly to loosen the

armature assembly (8) and remove it.

2Place the armature assembly upon a press

and press the O–ring (2), the front ball

bearing (3), the bearing clamp plate (5), as

well as the fan (6) from the armature.

1 Remove the two short screws from the

armature–facing side of the bearing

housing (2) and replace them by a pair of

longer screws (3). The outer ring (1) is

then pushed out from the bearing housing.

Maintenance

It is recommended to submit the tool to maintenance after every 150 work hours, if the hammer

mechanism gets weak, or if the carbon brushes switch off.

When carrying out maintenance all parts of the maintenance set 9170 3168 90 must be exchanged.

With the exception of the electrical parts all parts must be cleaned with cold cleanser.

Attention! No cleanser must enter the encapsulated bearings.

Clean the electrical parts with a dry brush.

Check the dismantled parts for abrasion (visual check) and exchange if necessary.

Before assembly submit all relevant parts to an electrical examination (see chapter Electrical and

Mechanical Test Instruction).

Dismantling the

field case

Dismantling the

armature

Removing the

outer ring of the

taper roller

bearing

General

Cleaning

Abrasion test

Electrical test

31 6542

321 54

6 7

321

Repair instruction No. 171.5/94

PB 14 D, PB 14 C 6

PAGE

6Seite

At each maintenance the tool must be lubricated as shown in the lubrication chart. After having

dismantled the entire tool remove the used grease completely and replace by new grease. For

assembly a total of 350 g of grease is necessary. Please pay attention to the following lubrication

chart:

Grease application code

ALiberally coat

BPack

CLightly smear

DEmpty the remaining contents of the tube

Lubrication

Torque

Repair instruction No. 171.5/94

PB 14 D, PB 14 C 7

PAGE

7Seite

Assembly

1 Replace the original screws (3) to the

armature–facing side of the bearing

housing (2).

2Place the housing onto a press and press

in the outer ring (1).

1 Fit the fan (6), the bearing clamp plate (5),

the front ball bearing (3), and the

O–ring (2) to the armature (7), and press it

in with a service tool.

2Fit the complete armature into the bearing

housing (1). If necessary, tap the housing

lightly with a hammer.

3Fit the bearing clamp plate (5) to the

bearing housing and secure with the four

screws (4).

1 Before assembly make sure that the field

location rubbers (6) fit properly in the field

case (8).

2Insert the field coil (4) into the field

case (8).

3Fit the baffle (3) to the field case.

4Replace the baffle gasket (2) on the field

case. Ensure proper fit!

5Place the field case over the armature and

fit it to the bearing housing (1).

6Secure the field case with the bearing

housing with the four screws (7).

1 Fit the motor housing (2) to the bearing

housing (1).

2Replace the six Allen screws (4) together

with the inserts (3) and tighten them.

Pressing the

outer ring of the

taper roller

bearing into the

bearing housing

Assembling and

replacing the

armature

assembly

Assembling the

field case

Fitting the motor

housing

321

321 54

6 7

31 8542 6 7

321 4

Repair instruction No. 171.5/94

PB 14 D, PB 14 C 8

PAGE

8Seite

1 Insert the connection lead into the lower

opening of the rear handle front (7) and

lock the switch (6) by depressing the

locking button and the pusher at the same

time.

2Now insert the switch such that the pusher

and the locking button fit through the

corresponding reliefs.

3Unlock the locking button by depressing

the pusher.

4Fit and secure the rear handle grip (5).

Make sure the leads are not jammed.

5Fit the support rubbers (2) and place the

handle support (3) over it. Take care that

the leads are in the right position.

6Now replace the fitted rear handle

assembly to the motor housing until

locked.

7Insert the two handle locking plates (4) until they engage, then secure them with screws.

1 Connect the cables to the terminal block

(2) as shown in illustration.

2Push the brush leads (1) into the housing

towards the carbon brushes and connect

them.

3Fit the terminal bracket (3) to the housing

and secure it with the screws (4).

Assembling the

rear handle

assembly

Mounting the

switch terminals

Repair instruction No. 171.5/94

PB 14 D, PB 14 C 9

PAGE

9Seite

1 Pull the spring (2) upwards with a hook

and insert the carbon brushes (3). Take

care that the carbon brushes face the

spring with the bevelled side upwards.

2Secure the cable lug of the carbon

brushes with the screw (4).

3Fit and secure both brush covers (1).

1 Fit the barrel (2) such that its opening (5)

faces the reception of the inclined shaft

bearing assembly.

2Press the barrel in with aid of a service

tool.

3Insert the barrel retainer (3), fit and secure

it with three screws (4).

1 Break the edges of the striker bearing clips

(2) before fitting them to the striker (1).

2Fit the nu–lip–seal (3) and make sure that

it is not twisted.

3Insert the striker into the barrel (4).

1 Fit the nu–lip–seal (2) to the piston (4) and

make sure that it is not twisted.

2Insert the gudgeon pin (3) and fit the

bearing clip (5).

3Grease the piston and insert it into the

barrel.

Fitting the

carbon brushes

Mounting the

barrel

Fitting the striker

Fitting the piston

321 4

321

51 2 3 4

Repair instruction No. 171.5/94

PB 14 D, PB 14 C 10

PAGE

10Seite

1 Fit the O–ring (3) to the edn cap (2), fit it to

the hammer case (4), and secure it with

the three screws (1).

1 Place the inclined shaft bearing (2) upon

the service tool no. 9170 3023 30 (3) and

press in the layshaft (1).

2Turn the inclined shaft bearing over and

press the gear (5) and the taper roller

bearing (4) on. Grease the taper roller

bearings before fitting them.

3Again turn the inclined shaft bearing over

and press the taper roller bearing (6) on.

1 Insert the eight concave disc springs (2)

into the inclined shaft bearing assembly

reception of the housing (1) as follows:

Concave sides facing downward, 2 facing

upward, 2 facing downward, 2 facing

upward, grease in between.

2Place the washer (3) on top of the springs.

3Insert the assembled inclined shaft

bearing assembly (7) such that the catch

(5) of the inclined shaft bearing fits into the

boring of the gudgeon pin.

4Fit the outer rings (4 and 6) to the taper

roller bearings.

1 Fit the gasket (3) to the hammer case (2).

2Fit the completely assembled hammer

case (2) to the bearing housing (4) and

secure it with the six Allen screws (1) and

the washers.

Mounting the

Edn cap

Assembling the

inclined shaft

bearing

assembly

Fitting the

inclined shaft

bearing

assembly

Mounting the

hammer case

1 2 3 4

6 12 5 4

1 32 4 5 6

1 42 3

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