GMC 1989 Light Duty Truck Repair Manual page 105

REMOVE
Wrap 0.1 mm to 0.2 mm
(.005" to .008") shim stock
around shaft and insert
between shaft and seal.
Pry seal out.
W ORM SHAFT
SHIM STO C K
W O RM SHAFT
SEAL
REMOVE
1. Center steering gear.
2. Remove parts as shown.
PRELOAD ADJU STER NUT
(If replacing gasket only, do not remove.)
S ID E C O V E R BOLTS
S ID E C O V E R
PRELOAD
ADJUSTER
SHIM
PRELOAD
ADJUSTER
PITMAN
SHAFT
PITMAN SHAFT
SEA L
MANUAL STEERING GEAR 3B2-3
1. R EM O VE A N D IN STA LL W O R M SH A FT
SEA L GEAR A SS EM B LE D
INSTALL
1. Install parts as shown.
S C R E W D R IV E R
HOUSING
NOTICE: Do not turn steering wheel hard
against "stops" when linkage is disconnected.
2. R EM O VE A N D IN STA LL PITM AN SH A FT
AND SIDE C O VER
INSTALL
1. Before installing turn
preload adjuster screw
counter-clockwise until
it bottoms, then back
screw off one half turn.
2. Install parts as shown
FEELER GAUGE
S ID E C O V E R
(Select to get
G A SK ET
proper clearance)
HOUSING
PITMAN
SHAFT SEA L
SC R E W D R IV E R
Figure 2 — Model 525 — C hart A
1" SO C K ET
W ORM SHAFT
HOUSING
Install seal.
Checking end clearance
If clearance is greater than .05 mm (.002") a steering gear
lash adjuster kit is available.
PRELOAD
A DJUSTER
Install seal
LUBRICATION
The steering gear requires .312 kg (11 oz)
of lubricant GM4673M or equivalent.
1
SEAL
.J
SHIM
PITMAN SHAFT
_J
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