GMC 1989 Light Duty Truck, Repair Manual, Page: 765 / 998

400/475 AUTOMATIC TRANSMISSION 7A2-5
ILL.
N O .
D E S C R I P T I O N
A G U I D E PIN S
4 7 BOLT, H E X H D 5 / 1 6 - 1 8 X 1 . 8 7 5 (V .B . T O C A S E )
4 8 M A N U A L D E T E N T R O L L E R & S P R I N G A S S E M B L Y
4 9 C O N T R O L V A L V E A S S E M B L Y
5 0 PIPE, G O V E R N O R
51 B O L T
5 2 S C R E E N A S S E M B L Y , G O V E R N O R
5 3 S C R E W , H E X H D & W A S H E R
5 4 S O L E N O I D A S S E M B L Y
56 G A S K E T , V A L V E B O D Y T O S P A C E R P L A T E
5 7 P L A T E , V A L V E B O D Y S P A C E R
5 8 G A S K E T , S P A C E R P L A T E T O C A S E
5 9 B A L L , ( . 2 5 " DI A.) (
6
)
__________________________________________________ H H 0 0 9 8 -4 0 0 -R 2
Figure 6 - R em oving C o n tro l V alve A s s e m b ly
2. Governor assembly (22)
Internal Transm ission S peed Sensor (I.T.S.S.)
M odels
3. Retaining bolt (83)
4. Speed sensor (81) with o-ring (82)
F ro n t End Play C heck
2.
3.
4.
6 .
7.
Measure (Figures 13 and 14)
Tools Required:
J 6125 Slide Ham m er Bolt
J 8001 Dial Indicator
R em ove oil pump bolt (4) and washer (5) at the
10-o’clock position as shown and install J 6125.
A ttach J 8001.
Elim inate slack by pressing turbine shaft to the
rear and output shaft (691) forward.
Index J 8001 against the end o f turbine shaft and
set dial to "0".
Pull out on the turbine shaft and note the
measurement on J 8001. End play should be
between .003" and .024" (.076-.610 m m )
Select correct washer from chart.
R em ove tools.
Important
During reassembly Front End Play Check
must be repeated to verify accuracy o f
selective thrust washer (207) Figure 19.