7–14
Copyright © 1996 General Motors Corp.
AT 500, 1500 SERIES AUTOMATIC TRANSMISSIONS
(2) If the anchor bolt is
3
⁄
8
-16, tighten it to
39–46 lb ft (53–62 N.m); if the anchor bolt is
7
⁄
16
-20,
tighten it to 67–80 lb ft (91–108 N.m) (Figure 7–32).
(3) For earlier models, install the governor
check valve ball into the channel in the transmission
housing (Figure 7–32).
NOTE:
If it is necessary to install the main control valve as-
sembly from under a vehicle, apply oil-soluble
grease to the governor check valve ball to locate it
on the separator plate of the assembled control
valve body.
(4) Position the main control valve body on
the transmission housing in its approximate installed
position (Figure 7–33)
Figure 7–32. Installing Governor Check Ball
(Earlier Models)
(5) Install governor circuit screen 12 (Fold-
out 12,B) closed end first, into the valve body, at the
governor feed tube opening (Figure 7–33). Install the
governor feed tube.
NOTE:
Inspect both ends of the governor feed tube. Earlier
models contained a plastic screen located where the
governor feed tube unites with the housing. This
screen must be replaced with a wire screen and relo-
cated in the governor feed tube bore (Figure 7–33).
(6) Install the governor pressure tube (Figure
7–33).
(7) For earlier models, install the short, non-
braced, first clutch feed tube.
(8) Lift the main control valve body and
swing the three tubes into proper position to enter their
holes in the transmission case.
(9) Lower the main control valve body onto
the case, while engaging the rear ends of the tubes in
the case, and the selector valve on the selector lever
(Figure 7–33). Remove valve body lifter tool J 29863.
(10) For later models, install the long-braced
first clutch feed tube (Figure 7–33).
(11) Install the detent spring, with its roller
over the selector lever, and its rear tab in the hole im-
mediately behind the bolt hole (Figure 7–33).
(12) Install a
1
⁄
4
-20 x 1
3
⁄
4
inch bolt into the de-
tent spring and valve body.
(13) For later models, install sixteen valve
body retaining bolts. Earlier models use one
1
⁄
4
-20 x 2
3
⁄
4
inch bolt and seventeen
1
⁄
4
-20 x 2
1
⁄
4
inch bolts or eigh-
teen
1
⁄
4
-20 x 2
1
⁄
4
inch bolts (Figure 7–33).
(14) On models equipped with a deep oil pan,
install filter spacer 41 or 49 (Foldout 12,B). Use
1
⁄
4
-20
x 3 inch valve body retaining bolts to retain the spacer.
(15) Shake the valve body slightly, and the
ends of the bolts will start into the tapped holes in the
transmission case.
CAUTION:
Do not allow the selector valve to fall out during
handling of the main control valve assembly.
CAUTION:
If the governor feed and pressure tubes are in-
stalled, rear end first, they will not align properly
when the main control valve is installed. They
may appear to align until installation of the main
control valve body is attempted.
H02899
ANCHOR BOLT
STEEL CHECK BALL
NONMAGNETIC ROD