Chevrolet 1977 Monte Carlo, Repair Manual

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A U T O M A T IC TR A N S M IS S IO N S (400J7A-17
Fi g . 7 A - 5 8 C ~ C h e c k i n g V a l v e O p e n i n g W i t h W e i g h t s O u t w a r d
10. Check valve operating at entry (.020" m inim um )
with a feeler gage, holding governor as show n w ith governor
w eights extended com pletely outward (Fig. 7A -58C ).
11. Check valve opening at exhaust (.020" m inim um )
w ith a feeler gage, holding governor as show n with governor
w eights com pletely inward (Fig. 7A -59C ).
G overnor D riven G ear R ep lacem e n t
To facilitate governor repair in the field, a governor
driven gear and replacement pins are available for service
use. The service package contains a nylon driven gear, tw o
governor w eight retaining pins and one governor gear
retainer split pin. Replacem ent o f gear m ust be performed
Fig. 7 A -59 C -C h ec k ing Valve Opening W it h W e ig h t Inward
Fi g. 7 A - 6 0 C ~ R e m o v i n g G o v e r n o r G e a r R e t a i n i n g Pin
with care in the follow in g manner:
1. D rive out governor gear retaining split pin using
sm all punch (Fig. 7A -60C ).
2. Support governor on 7 /6 4 inch plates installed in
exhaust slots o f governor sleeve, place in arbor press, and
with a long punch, press gear out o f sleeve.
3. Carefully clean governor sleeve o f chips that remain
from original gear installation.
4. Support governor on 7 /6 4 inch plates installed in
exhaust slots o f sleeve, position new gear in sleeve and, with
a suitable socket, press gear into sleeve until nearly seated.
Carefully rem ove any chips that m ay have shaved o ff gear
hub and press gear in until it b ottom s on shoulder.
5. A new pin h ole m ust be drilled through sleeve and
gear. Locate h ole position 90 degrees from existing hole,
center punch and then, w hile supporting governor in press,
drill new hole through sleeve and gear using a standard ( 1 /8
inch) drill.
6. Install split retaining pin.
7. W ash governor assem bly thoroughly to rem ove any
chips that m ay have collected.
A ssem bly
1. Install governor valve in bore o f governor sleeve,
large end first.
2. Install governor w eights and springs, and thrust cap
on governor sleeve.
3. A lign pin holes in thrust cap, governor weight
assem blies and governor sleeve, and install new pins. Crimp
both ends o f pins to prevent them from falling out.
4. C heck governor w eight assem blies for free operation
on pins.
5. Check governor valve for free m ovem ent in governor
sleeve.