GMC 1976 ZEO 6083 Maintenance Manual page 482

7- 3 4 TRANSMISSION
Figure 25-Removing Pressure Regulator Valve
2. Remove bottom pan and discard gasket .
3 . Remove oil filter assembly .
4 . Remove and discard the intake pipe to case
"0" ring seal from the oil filter assembly or from the
case counterbore.
REMOVE PRESSURE REGULATOR
VALVE
NOTE :
Unit may be removed with transmission
in vehicle after removing bottom pan.
Figure 26-Removing Governor Feed Pipe
1 . Compress regulator boost valve bushing
against pressure regulator spring and remove snap
ring using Snap Ring Pliers, J-5403 (#21), Figure
25 .
WARNING : PRESSURE REGULATOR SPRING
IS UNDER CONSIDERABLE COMPRESSION .
2. Remove regulator boost valve bushing and
valve .
3 . Remove pressure regulator spring .
4. Remove regulator valve, spring retainer, and
spacer or spacers if present.
REMOVE CONTROL VALVE
ASSEMBLY, GOVERNOR PIPES,
DETENT SPRING, ROLLER
ASSEMBLY,
CHECK BALLS, AND ELECTRICAL
CONNECTOR
NOTE :
Units may be removed with transmission
in vehicle, after removing bottom pan.
1 . Remove attaching screw and remove detent
roller and spring assembly .
2. Disconnect detent solenoid from electrical
connector.
3. Remove governor feed pipe from transmission
case and valve body by lifting straight out. Figure 26 .
4. Remove nineteen remaining control valve as-
sembly attaching screws . Do not remove detent so-
lenoid attaching screws at this time.
NOTE :
If the transmission is in the vehicle, the
front servo piston assembly may drop down as
the control valve assembly and governor pipe are
removed.
5. Remove control valve assembly with remain-
ing governor pipe attached .
CAUTION : Do not allowmanual valve to fall
out of its bore in control valve assembly.
6. Remove remaining governor pipe from valve
body .
ket.
7 . Remove control valve assembly to spacer gas-