Chevrolet 1977 10 Series, Repair Manual, Page: 314 / 468

(350)7A-30 OVERHAUL MANUAL
Fig. 7 A -9 7 B - -G o v e rn o r A s s e m b ly - Exp lo ded V i e w T y p ic a l
Disassembly
1. Cut off one end of each governor weight pin and
remove pins, governor thrust cap, governor weights, and
springs. G overnor weights are interchangeable from side to
side and need not be identified (fig. 7A-97B).
2. Remove governor valve from governor sleeve. Be
careful not to damage valve.
3. Perform following inspections and replace governor
driven gear, if necessary.
Inspection
1. Wash all parts in cleaning solvent, air dry and blow
out all passages.
2. Inspect governor sleeve for nicks, burrs, scoring or
galling.
3. Check governor sleeve for free operation in bore of
transmission case.
4. Inspect governor valve for nicks, burrs, scoring or
galling.
5. Check governor valve for free operation in bore of
governor sleeve.
6. Inspect governor driven gear for nicks, burrs, or
damage.
7. Check governor driven gear for looseness on governor
sleeve.
8. Inspect governor weight springs for distortion or
damage.
9. Check governor weights for free operation in their
retainers.
10. Check valve opening at entry and exhaust (.020 inch
minimum).
Governor Driven Gear Replacement
To facilitate governor repair in the field, a governor
driven gear and replacem ent pins are available for service use.
The service package contains a nylon driven gear, two
governor weight retaining pins and one governor gear
retainer split pin. Replacement of gear must be performed
with care in the following manner:
1. Drive out governor gear retaining split pin using small
punch.
2. Support governor on 3 /1 6 inch plates installed in
exhaust slots of governor sleeve, place in arbor press, and
with a long punch, press gear out of sleeve.
3. Carefully clean governor sleeve of chips that remain
from original gear installation.
4. Support governor on 3 /1 6 inch plates installed in
exhaust slots of sleeve, position new gear in sleeve and, with
a suitable socket, press gear into sleeve until nearly seated.
Carefully remove any chips that may have shaved off gear
hub and press gear in until it bottom s on shoulder.
5. A new pin hole m ust be drilled through sleeve and
gear. Locate hole position 90 degrees from existing hole,
center punch and then, while supporting governor in press,
drill new hole through sleeve and gear using a standard (1/8
inch) drill.
6. Install split retaining pin.
7. Wash governor assembly thoroughly to remove any
chips that may have collected.
Assembly
1. Install governor valve in bore of sleeve, large land end
first.
2. Install governor weights and springs, and thrust cap
on governor sleeve.
3. Align pin holes in thrust cap, governor weight
assemblies and governor sleeve, and install new pins. Crim p
both ends of pins to prevent them from falling out.
4. Check governor weight assemblies for free operation
on pins.
5. Check governor valve for free movement in governor
sleeve.
Fig. 7A-98B--lnstalling Extension Housing Bushing
J-8092
J - 2 1 4 2 4 - 9
E X T E N S IO N
H O U S I N G