Operation CHARM: Car repair manuals for everyone.

Assembly


1. Install throttle shaft and lever assembly, with torsion throttle return spring and bushing, in throttle body flange.
2. Position throttle plate on throttle shaft with notch in plate aligned with slotted idle port in throttle body flange.
3. Install throttle plate attaching screws snug but not tight.
4. Move shaft back and forth and rotate it to ensure that throttle plate does not bind in flange bore. It is necessary that throttle plate should close tight in bore, therefore, the idle speed screw should be backed out enough to ensure that it does not contact throttle stop.
5. Reposition throttle plate as necessary, then tighten screws and stake them in place.
6. Install idle mixture screw and spring and a new adjustment limiting cap or tamper resistant cap, setting screw to same number of turns from lightly seated as noted during disassembly.
7. Place new body flange gasket and the main body casting on the throttle body flange, then install attaching screws and tighten them evenly.
8. Using suitable tool, install low speed jet and main metering rod jet.
9. Install pump diaphragm in pump diaphragm housing and position pump diaphragm spring on diaphragm shaft and housing assembly.
10. Install spring shim washers in proper locations, then the spring retainer.
11. Install pump lifter link, then the throttle shaft arm and pump connector link if equipped.
12. Install metering rod arm and spring assembly, and the upper pump spring on the diaphragm shaft.
13. Depress spring and install upper pump spring retainer.
14. Install metering rod on metering rod arm and place looped end of metering rod arm spring on metering rod.
15. Align pump diaphragm with diaphragm housing, ensuring that holes are aligned, then install housing attaching screws to keep housing and diaphragm aligned.
16. Align pump housing, pump lifter link, metering rod and baffle plate with main body casting, ensuring that vacuum passage in diaphragm housing is aligned with vacuum passage in main body.
17. Install assembly in main body casting, being sure to engage pump lifter link and the main body and to insert metering rod in main jet.
18. Install pump housing attaching screws snug but not tight.
19. Push down on diaphragm shaft to compress diaphragm, then tighten attaching screws.
20. Adjust metering rod.
21. Install fast idle cam and shoulder screw.
22. Install throttle shaft arm and pump connector link on throttle shaft and pump lifter link, then tighten lock screw.
23. Install E-clip, vent rod actuating lever, spring washer, operating lever and retaining screw at end of throttle shaft and tighten retaining screw.
24. Assemble choke piston and pin to choke piston lever and link assembly.
25. Install choke shaft assembly in air horn, correctly positioning piston.
26. Align piston with cylinder and rotate shaft assembly clockwise until piston pin is inside piston cylinder.
27. Position choke plate on choke shaft, install screws snug, ensure that choke plate is not binding and tighten screws.
28. Install choke link lever and tighten attaching screw.
29. Install needle seat and gasket in air horn.
30. Invert air horn and install needle, pin spring, needle pin, float and lever assembly and float pin.
31. Adjust float level to specifications.
32. Align bowl vent flapper valve with vent rod, ensuring that spring is properly installed on vent rod shaft, then install spring retainer.
33. Place pump check ball and weight in main body casting.
34. Position new air horn gasket and the air horn assembly, together with dashpot, solenoid or ISC unit with bracket, on main body, then install and tighten attaching screws. When installing air horn assembly onto main body, ensure that mechanical fuel bowl vent lever is engaged with forked actuating lever, if equipped.
35. Ensure that thermostatic spring engages choke lever tang and is not stopped by retaining tab on baffle plate, if equipped.
36. Install retainers and housing screws, set coil housing index to specifications and tighten screws.
37. On 1982 models used on vehicles with manual transmission, install choke arm overcenter spring.
38. On 1982 - 86 models, install choke housing gasket, locking and indexing plate, notched choke cap gasket thermostatic coil housing, retaining ring and rivets and/or screw(s). Ensure that thermostatic spring, if equipped, engages choke lever tang and is not stopped by retaining tab on locking and indexing plate.
39. Install air cleaner bracket and fast idle link.
40. Install EGR WOT dump valve and bracket assembly, if equipped.
41. Install solevac, throttle kicker, throttle vacuum positioner, front mounted solenoid or ISC unit, as equipped, with bracket assembly.
42. Install wire harness bracket, if equipped.