Gear Disassembly - GMC T Series 1994 Repair Manual

Key No. Part Name
1 - NUT, PRELOAD ADJUSTER
2 - BOLT, HEX HEAD (SIDE COVER)
3 - COVER ASSEMBLY, HOUSING SIDE
4 - SEAL, O-RING (SIDE COVER)
5 - GEAR ASM., PITMAN SHAFT
6 - HOUSING, STEERING GEAR
7 - PISTON, SECONDARY RACK
8 - PLUG, RACK PISTON
9 - SEAL, O-RING (RACK PISTON)
10- RING, RACK PISTON
11 - SEAL, O-RING (HOUSING)
12-PLUG, HOUSING END
13 - RING, RETAINING (HOUSING END PLUG)
14 - NUT, ADJUSTER PLUG LOCK
15- RING, RETAINING
16 - SEAL, STUB SHAFT DUST
1 7 -SEAL, STUB SHAFT
18 - BEARING ASM., NEEDLE
1 9 - PLUG, ADJUSTER
20 - SEAL, O-RING ADJUSTER
21 - RACE, UPPER THRUST BEARING (LARGE)
22 - BEARING ASM, UPPER THRUST
23 - RACE, UPPER THRUST BEARING (SMALL)
24 - SPACER, THRUST BEARING
25 - RETAINER, BEARING (ADJUSTER)
26 - SEAL, O-RING (VALVE BODY)

GEAR DISASSEMBLY

Figures 1 thru 9
Tools Required:
J 2 1552 Rack Piston Arbor
J 7624 Spanner Wrench
Disassemble
Retaining ring (13), from both primary and
secondary cylinders (see Figure 1).
• Unseat retaining ring from housing (6). Use
a needle nose punch and rap with a hammer
(see Figure 3).
• Pry retaining ring out of housing groove
using a screwdriver.
2. Plug (12). Turn stub shaft (31) counterclockwise
only until the plug is forced out of the primary
cylinder.
Key No.
27 RING, VALVE BODY
28 BODY, VALVE
29 SEAL, O-RING (SPOOL)
30 SPOOL, VALVE
31 SHAFT, STUB
32 SEAL, O-RING (STUB SHAFT)
33 WORM ASM, PIN &
34 RACE, THRUST BEARING (WORM)
35 BEARING ASM, ROLLER THRUST (WORM)
36 RACE, THRUST BEARING (WORM)
37 SEAL, O-RING (RELIEF VALVE)
38 PLATE, BYPASS
39 SEAL, O-RING (RELIEF VALVE)
40 VALVE ASM, RELIEF
41 SEAL, PITMAN SHAFT DUST
42 RING, RETAINING (PITMAN SHAFT SEAL)
43 WASHER, SEAL BACK-UP (PITMAN SHAFT)
44 SEAL, PITMAN SHAFT
45 BEARING ASM, NEEDLE (PITMAN SHAFT)
46 GUIDE, BALL RETURN
47 CLAMP, BALL RETURN GUIDE
48- SCREW ASM, LOCKWASHER
49- BALLS
50- PISTON, (RH) PRIMARY RACK
51 - CONNECTOR, INVERTED FLARE
Figure 2 710 Power Steering Gear - Legend
Part Name