GMC 1982 Light Duty Truck Service Manual page 277

1. REMOVE AND INSTALL PITMAN SHAFT
SEALS IN CAR
R E M O V E
1. C lea n exposed end of
pitman shaft and end
of housing after
removing arm.
2. Rem ove retaining ring
3. Start engine and turn
w heels fully to the
right to force seals
and w asher out.
4. Turn off engine.
5. Inspect housing
and shaft.
PITM AN S H A FT —
Inspect seal surface for
roughness and pitting
Puller
J-29107
Formerly
J-5504
and
Rem ove Pitman Arm
Install Seals
2. REMOVE AND INSTALL STUB SHAFT
SEALS WITHOUT DISASSEMBLING GEAR
REMOVE
1. Remove retaining ring
and dust seal. Take care
not to scratch shaft.
2. Wrap 0.1mm to 0.2mm
(.005" to .008") shim
stock around shaft and
insert between shaft
and sealing lip until
it bottoms. Pry seal out.
RETAINING RING
STUB SHAFT
SHIM STOCK
Screwdriver
HOUSING ASSEMBLY
IN STA LL
1 Install parts as shown
HOU SING ASSEM BLY
Inspect for burrs.-
RETAININ G RING
PITMAN ARM
^ — LO CK W ASHER
NUT — Torque to
i 250 Newton Meters
<185 Ft. Lbs.)
1
Installer
J-6133-01
INSTALL
1. Install stub shaft seal
protector J-29810 on
stub shaft. Install stub
shaft seal. Coat top of
seal with anhydrous
calcium grease.
2. Install dust seal just deep
enough to clear retaining
ring groove, then install
retaining ring.
DUST SEAL
J-29810
Fig. 3B 3-52 -O ve rha ul 605 G ear, C hart B
POWER STEERING SYSTEM 3B3-21
3. REMOVE AND INSTALL PITMAN SHAFT
AND SIDE COVER
REM O VE
1. If pitman shaft and
side cover are to be
separated, remove
preload adjuster nut.
IT IS A LEFT HAND
THREAD.
2. Rotate stub shaft
to center gear, then
remove parts as shown.
Tap on thread end of
pitman shaft with
plastic hammer.
O
PITMAN SHAFT G EA R
SIDE CO VER "O" RING SEAL
SIDE CO V ER SPRING
r m
i hand
y i e f t
thread
/
Separate pitman shaft
from side cover if required.
4. REMOVE AND INSTALL LOWER BEARING
AND ADJUSTER
REMOVE
1. Loosen lock nut.
Use punch against
edge of one slot.
2. Remove parts as shown
3. Inspect lower thrust
bearing assembly.
H OUSING A SSEM BLY
LOW ER THRU ST BEARIN G
A SSEM BLY — Inspect for
smooth operation
LO CK N U T -y
ADJUSTER PLUG "O " RING SEAL
A D JU STER PLUG
Hexagon D river (17mm )
INSTALL
1. Install parts as shown
Use new retaining ring,
make sure that open
end of retaining ring
is approx. 13mm (V2")
from access hole.
2. Side cover must be
depressed to install
retaining ring.
i (SEE BELOW)*
• SIDE CO V ER
'
RETAINING RING
PRELOAD ADJ. NUT -
Torque to 27 Newton
Metres (20 Ft. lbs)
' PRELOAD A D JU STER
-SIDE CO VER
Retaining ring access
hole (use punch).
^ Depress side cover
INSTALL
1. Install parts as shown.
2. Adjust thrust bearing
preload (see adjustment
procedure) before
tightening lock nut.