GMC 1989 Light Duty Truck, Repair Manual, Page: 767 / 998

400/475 AUTOMATIC TRANSMISSION 7A2-7
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S e le c tio n C hart
Important
During reassembly, Rear End Play Check
must be repeated to verify accuracy o f
selective thrust washer (696) Figure 27.
O il Pum p A ssem bly
1.
2
.
3.
Remove or Disconnect (Figures 18 and 19)
T ool Required:
J 24773-1 Oil Pump Remover
Bolts (4) and washers (5).
Oil pump assembly (6).
Pump seal (7) and gasket (8).
P arkin g Lock P aw l and A c tu a to r A ssem bly
Remove or Disconnect (Figure 20 and 21)
1. N ut (703) and pin (704).
2. D etent lever (707) and actuator (708).
3. Bolts (701) and parking pawl bracket (702).
5. Shaft (712) and plug (709).
F orw ard C lu tc h A ssem bly
Remove or Disconnect (Figure 22)
Forward clutch assembly (602-618).
Grasp turbine shaft and lift.
4 -+
Figure 1 2 - R em o vin g G o v e rn o r A s s e m b ly
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< N j O S O M E M O D E L S
19
20
21
22
81
8 2
8 3
BOLT, H E X H D 5 / 1 6 - 1 8 X .6 2
C O V E R , G O V E R N O R
G A S K E T , G O V E R N O R C O V E R
G O V E R N O R A S S E M B L Y
S P E E D S E N S O R , I N T E R N A L T R A N S M I S S I O N
O - R I N G , S P E E D S E N S O R
BOLT, S P E E D S E N S O R R E T A I N I N G
___________________________________________________ H H 0 0 3 1 -4 0 0 -R 1
Figure 13 - F ront U n it End Play C heck
4. Spring (710) and retainer (711).