GMC 1989 Light Duty Truck, Repair Manual, Page: 742 / 998

7A1-46 700-R4 AUTOMATIC TRANSMISSION
J H 0 0 6 3 7 0 0 R 4
Figure 109 T h ro ttle Lever and B ra cke t A ss e m b ly
Figure 1 10 1-2 and 3-4 A c c u m u la to r A sse m b ly
64 T H R O T T L E L IN K
65 LEVER & B R A C K E T A S S E M B L Y ,T H R O T T L E
91 B A L L , C AR BO N S T E E L - T . V . E X H A U S T
(LO C A T E D IN V A L V E BODY)
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LA R G E END
IN S T A L L E D
IN P IS T O N
ILL r© Ir ^ r^ llru -L
1
--
NO. DESCRIPTION
5 2 P IS T O N , 3 -4 A C C U M U L A T O R
5 3 R IN G , O IL S E A L (3 -4 A C C U M U L A T O R P IS T O N )
5 4 S PR IN G , 3 -4 A C C U M U L A T O R
5 6 PLATE, V A LV E B O D Y S P A C E R
5 9 S P R IN G , 1 -2 A C C U M U L A T O R (C O N IC A L )
6 0 R IN G , O IL S E A L (1 -2 A C C U M . P IS T O N )
61 P IS T O N , 1 -2 A C C U M U L A T O R
6 2 C O V E R & PIN A S S E M B L Y , 1 -2 A C C U M .
6 3 BOLT, A C C U M U L A T O R C O V E R
7 7 PIN, A C C U M U L A T O R P IS T O N
8 8 G A S K E T , S P A C E R PLATE T O C A S E
8 9 G A S K E T , S P A C E R PLATE T O V A LV E B O D Y
1989
M O D E L S
1 2 A C C U M U L A T O R
S P R I N G CO LO R
3 4 A C C U M U L A T O R
SP R I N G CO LO R
M H M , M P M , M W M , M Z M , PAM,
PBM, PCM, TN M , TU M , TX M
ORANGE
VIOLET
FM M , M A M , M FM , M R M , M X M ORANGE
DK. GREEN
M D M , M KM , M L M ,T J M ,T K M ORANGE RED
FKM, FXM, YDM, Y M M , YUM
YELLOW YELLOW
M C M , PRM, YPM YELLOW RED
TH M , TLM
OK. GREEN LT. BLUE
YTM , YZM YELLOW
VIOLET
HBM
VIOLET YELLOW
HDM DK. GREEN
DK. GREEN
YNM DK. GREEN YELLOW
YXM
DK. GREEN DK. GREEN
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Figure 1 1 1 1-2 and 3-4 A c c u m u la to r S p rin g C hart
5. Spacer plate (56)
6. Valve body to spacer plate gasket (89)
gasket indentified by a “V ”
Control Valve Assembly
Clean
*
L*
Control valve assembly (67) thoroughly in clean
solvent-m ove the valves with a pick or small
screwdriver to dislodge any dirt or debris that
may have accumulated
Air Dry
Disassemble (Figures 113 & 114)
Control Valve Assem bly
- Position as shown on a clean surface
- Rem ove valve trains beginning with the
upper left hand corner.
NOTE
: Some
valves are under pressure - cover the bores
while removing the roll pins
- R em ove blind hole roll pins with a modified
drill bit
- Valves, springs and bushings must be laid
out on a clean surface in the exact sequence
they are removed
- R em ove pressure switches
Clean
All valves, springs, bushings and control valve
body in clean solvent
Dry using compressed air
Inspect
All Valves and Bushings For:
Porosity
Scoring
- N icks
Scratches
Springs for Damaged or Distorted Coils
Valve Body Casting For: