Chevrolet 70 1969 Series, Shop Manual

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E N G IN E 6-41
1. Cover Screw and Lock
2. Cover
3. Cover Gasket
4. Lock
5. Link
6. Lever Screw and Lock Washer
7. Governor Lever
8. Governor Spring
Figure 5 — G o v e rn o r U nit C o m p o n e n ts D isa sse m b le d Typical
9. Housing-to-Throttle Body Screws
10. Spring Anchor
11. Fast Idle Screw and Spring
12. Throttle Driver Assembly
13. Throttle Driver Screw
14. Special Screw
15. Throttle Body Assembly
16. Gasket
17. Governor Housing
18. Governor Diaphragm Spring
19. Governor Diaphragm and Rod
Assembly
20. Outer Diaphragm
21. Diaphragm Cover
22. Cover Screws and Lock Washers
23. Choke Control Holder
Discard old gaskets and use new gaskets when assem­
bling carburetor.
Carefully inspect all other parts for damage, wear, and
deterioration. Inspect castings for cracks. If condition of
any part is in doubt, replace with a new part. Bearings (2,
fig. 6) can be inspected without removing them from
throttle body. Replacement of throttle shaft bearings and
seal in throttle body is covered in “ Repair” below:
REPAIR
Key numbers in text refer to Figure 6.
Throttle Shaft Seal Replacement
If throttle shaft bearings do not require replacement,
the seal (3, fig. 6) can be replaced as follows:
Use small flat blade to remove the seal from throttle
body. Lubricate new seal, then install seal in space from
which old seal was removed, with the seal lip toward bear­
ing assembly.
Throttle Shaft Bearing Replacement
C AU TIO N : Do not rem ove throttle sh aft bear-
1. Throttle Shaft
Retainer Washer
2. Bearing Assembly
3. Seal
4. Throttle Plates
5. Throttle Driver
Screw and Lock
Washer
6. Throttle Driver
7. Throttle Shaft
8. Throttle Body
9. Throttle Plate
Screws
10. Mixture Screw
Springs
11. Idle Mixture Screws
CHEVROLET SERIES 70-80 HEAVY DUTY TRUCK SH O P M A N U A L