6–10 Copyright © 1996 General Motors Corp.
AT 500, 1500 SERIES AUTOMATIC TRANSMISSIONS
(17) Restrain stop 74 and remove retainer pin
75. Remove stop 74, spring 73, and 3–4 relay valve 72.
Valve stop 74 replaces two parts used in earlier mod-
els.
(18) If present, restrain stop 78 and remove
retainer pin 79. Remove stop 78, spring 77, and trim-
mer regulator valve 76.
b. Assembly
(Foldout 11)
NOTE:
Check the configuration and position of all compo-
nents (Figure 6–20). Check the identification of all
springs (Paragraph 8–2). All valves, when dry, must
move freely by their own weight in their bores.
(1) Install 1–2 relay valve 40 (Foldout 11)
into Bore
A
(Figure 6–20). Into the same bore, install
spring 41 (Foldout 11) and spacer 42. Compress
spacer 42 and install pin 36 through the valve body
and at the outside end of spacer 42.
(2) Install 2–3 relay valve 37 into Bore
B
(Figure 6–20). Into the same bore, install spring 38
(Foldout 11) and valve stop 39. Compress stop 39 and
install pin 36 through the valve body and at the outside
end of stop 39.
(3) Install fourth clutch trimmer valve 29 into
Bore
C
(Figure 6–20). Into the same bore, install plug
30 (Foldout 11), springs 31 and 32 (if present), and
valve stop 33.
(4) Install second clutch trimmer valve 21
into Bore
D
(Figure 6–20). Into the same bore, install
plug 22 (Foldout 11), springs 23 and 24 (if present),
and valve stop 25.
(5) Install third clutch trimmer valve 12 into
Bore
E
(Figure 6–20). Into the same bore, install plug
13 (Foldout 11), spring 14, and valve stop 15.
(6) Install first clutch trimmer valve 16 into
Bore
F
(Figure 6–20). Into the same bore, install plug
17 (Foldout 11), springs 18 and 19 (if present), and
valve stop 20.
(7) If removed, install spring 27 into Bore
P
(Figure 6–20). Into the same bore, install stop 26
(Foldout 11) and accumulator valve 28.
(8) Install cover 34. Hold cover against
spring force and install nine (or eight, some mod-
els)
1
⁄
4
-20 x
3
⁄
4
inch bolts 35. Using preset torque
wrench J 26912, tighten the bolts to 8–12 lb ft
(11–16 N
.
m).
(9) If removed, install trimmer regulator
valve 76 into Bore
G
(Figure 6–20). Into the same
bore, install spring 77 (Foldout 11) and valve stop 78.
Compress stop 78 and install retainer pin 79 through
the valve body and through the hole in stop 78.
(10) Install 3–4 relay valve 72 into Bore
H
(Figure 6–20). Into the same bore, install spring 73
(Foldout 11) and valve stop 74. Compress stop 74 and
install pin 75 through the valve body and at the outside
end of stop 74.
(11) Install 3–4 shift signal valve 66 into Bore
I
(Figure 6–20). Into the same bore, install 3–4 modu-
lator valve 67 (Foldout 11), spring 68, valve stop 69,
and adjusting ring 70. Compress adjusting ring 70 and
install retainer pin 71 as it was at removal.
(12) Install 2–3 shift signal valve 60 into Bore
J
(Figure 6–20). Into the same bore, install 2–3 modu-
lator valve 61 (Foldout 11), spring 62, valve stop 63,
and adjusting ring 64. Compress adjusting ring 64 and
install retainer pin 65 through the valve body, across
the recorded step of adjusting ring 64, and through the
hole in stop 63.
(13) For units with second gear start, install
spring 83 into Bore
K
(Figure 6–20). For all models,
into Bore
K
, install 1–2 shift signal valve 54 (Foldout
11). Into the same bore install 1–2 modulator valve 55.
For units without second gear start, install spring 56.
Install valve stop 57 and adjusting ring 58. Compress
adjusting ring 58 and install retainer pin 59 through
the valve body, across the recorded step of adjusting
ring 58, and through the hole in stop 57.
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