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
13
34 65 7
12
1110
8 9
1 32
1 32 4
7
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
3
1
2
3
4
5
6
7
51 2 3 4
321 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
2
3
4
1
21
5
7
6
3
4
4
3
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
8
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
8
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
21
5
7
6
3
4
4
3
4
1
2
3

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
2
3
4
1
321 4
5
321
4
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
2
3
4
5
3
6
1 32 4 5 6
7
1 42 3