Chevrolet 10 series 1973, Overhaul Manual

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9-6 STEERING
1. W o r m B e a rin g A d ju ste r
L o c k n u t
2. W o rm B e a rin g A d ju ste r
3. L o w e r W o r m B e a rin g R ac e
4. L o w e r B a ll B e a rin g
5. L o w e r B e a rin g R e ta in e r
6. B a ll N u t
7. W o r m sh a ft
8. U p p e r B a ll B e a r in g
9. U p p e r W o r m B e a rin g R a c e
10. P itm a n S h a ft Seal
11. H o u s in g
12. W o r m s h a ft Seal
13. S id e C o v e r G a sk e t
14. P itm a n S h a f t B u s h in g
(2 B u s h in g s o n G 10-30 Series
T ru c k s)
15. P itm a n S h a ft
16. L a sh A d ju ste r
17. L a sh A d ju s t e r S h im
18. H o u s in g S id e C o v e r a nd
B u s h in g A s s e m b ly
19. L a sh A d ju s t e r L o c k n u t
20. S id e C o v e r B o lt s
21. B a ll G u id e C la m p S c re w s
22. B a ll G u id e C la m p
23. B a ll G u id e s
24. B a lls
Fig. 14- Steering Gear-Except Corvette
nearly all end play has been removed from the
wormshaft.
4.
Corvette-
a. Place a wormshaft bearing in the housing race.
Slide the other bearing and the adjuster plug
assembly over the upper end of the wormshaft.
b. Insert the wormshaft, nut and adjuster assembly
into the housing, guiding the lower end of the
wormshaft into the housing bearing.
c. Thread the adjuster into the housing until nearly
all end play is removed from the wormshaft.
5. Position the lash adjuster (with shim) in the slotted
end of the pitman shaft. Check the end clearance,
which should not be greater than .002" (fig. 16). If
clearance is greater than .002", a steering gear lash
adjuster shim unit is available. It contains four
shims—.063", .065", .067" and .069" thick.
6. Lubricate the steering gear with 11 oz. of lubricant
meeting GM Specification GM 4673 (or equiv­
alent). Rotate the wormsahft until the ball nut is at
the end of its travel and then pack as much new
lubricant into the housing as possible without losing
it out the pitman shaft opening. Rotate the
wormshaft until the ball nut is at the other end of
its travel and pack as much lubricant into the
opposite end as possible.
7. Rotate the wormshaft until the ball nut is about in
the center of travel. This is to make sure that the
pitman shaft sector and ball nut will engage
properly, with the center tooth of the sector
entering the center tooth space in the ball nut.
8. Insert the pitman shaft assembly (with lash adjuster
OVERHAUL MANUAL