Chevrolet 10 1971 Series Chassis Service Manual page 309

1. Remove bottom pan attaching screws, pan, and
gasket.
2. Remove oil filter retainer bolt, oil filter, intake pipe
assembly and intake pipe to case " O " ring. Discard
the oil filter and pipe to case "O " ring.
3. Install new " O" ring seal on intake pipe and place
pipe assembly into grommet on new filter assembly.
" O"
4. With ring on intake pipe, install pipe and
filter assembly into case, attaching filter to control
valve assembly with the retainer bolt.
5. Thoroughly clean bottom pan.
6. Affix new gasket to bottom pan with petroleum jelly.
7. Install bottom pan with attaching screws and torque
to specifications.
8. If only the pan has been removed, pour approximately
7-1/2 pints (U.S. measure, 6-1/4 pints Imperial
measure) of fluid into the transmission.
valve body has also been removed use 9-1/2 pints
(U.S. measure, 8 pints Imperial measure). After a
complete overhaul approximately 19 pints (U.S. mea­
sure, 15-3/4 pints Imperial measure) are required.
Be sure container, spout, or funnel is clean.
9. Start engine and let idle (carburetor off fast idle
step). Place selector lever in P position and apply
hand brake.
10. With transmission warm (approximately 180°F.), add
fluid to bring level to full mark on indicator.
With transmission at room temperature (approx. 70°F.)
add fluid to bring level to 1/4 inch below add mark.
Do not overfill. Foaming will result.
CAUTION:
PRESSURE REGULATOR VALVE
The 1971 solid type pressure regulator
NOTE:
valve does not contain oil holes and an orifice
cup plug like the previous pressure regulator
valve. The solid style valve must only be used in
the pump cover with the squared off pressure
regulator boss. (Pressure boost bushing end).
See Fig. 5T. The previous pressure regulator
valve with the oil holes and orifice cup plug will
be used to service either type pump cover.
Fig. 5T— Pressure Regulator V a lv e
Removal
Installation
verse of the removal.
CONTROL VALVE BODY
Removal
If the
1. Remove bottom pan and filter.
2. Disconnect lead wire from pressure switch assembly.
3. Remove control valve body attaching screws and de­
4. Remove control valve body assembly and governor
5. Remove the governor screen assembly from end of
6. Remove the governor pipes and manual valve from
Installation
PUMP COVER
FOR IDENTIFICATION-
SQUARED OFF PRESSURE
REG. BOSS.
CLUTCHES AND TRANSMISSIONS 7-33
1. Remove bottom pan and filter.
2 o Compress regulator boost valve bushing against
pressure regulator spring and remove snap ring,
using J-5403 pliers.
30 Remove regulator boost valve bushing and valve.
4. Remove pressure regulator spring.
5. Remove regulator valve, spring r e t a i n e r ,
spacer(s) if present.
Installation of the pressure regulator valve is the re­
Adjust oil level.
tent roller spring assembly.
Do not remove
NOTE:
screws.
If the transmission is in the ve­
CAUTION:
hicle, the front servo parts may drop out as
the control valve assembly is removed.
pipes. If care is taken in removing control valve
body the six (6) check balls will stay in place above
the spacer plate.
governor feed pipe or from the governor feed pipe
hole in the case (fig. 6T). Clean governor screen in
clean solvent and air dry.
Do not drop manual valve.
CAUTION:
control valve body.
For Installation see Overhaul Manual.
Fig. 6T— G overnor Screen Position
and
solenoid attaching
GO VERNOR SCREEN
ASSY.
GO VERNO R FEED
PIPE HOLE
10-30 CHEVROLET TRUCK SERVICE MANUAL