Chevrolet 1977 10 Series, Руководство по ремонту, Страница: 45 / 468

STEERING 3B-3
Fig. 3 B - 7 ~ R e m o v in g Lo w e r Be a rin g R e ta in e r - E x c e p t Corv ette
Repairs
Pitm an S h aft an d /o r W orm shaft Seal
Replacement
The double lipped pitm an shaft and wormshaft seals
should be replaced each time a defective seal is indicated or
the steering gear is disassembled.
1. If the seals were not removed at disassembly, pry out
the old seals using a suitable size screw driver.
CAUTION: Before installing new seals, check the
condition o f the pitman shaft bushing(s) and the
upper wormshaft bearing race.
2. A suitable size socket, pressing on the outer diam eter
of the seal, may be used to install new seals.
CAUTION: Care should be taken to insure that the
new seals are not assembled in a cocked position.
Pitm an S h a ft Bushing Replacement
1. Support the steering gear housing in an arbor press
and press the pitman shaft bushing (2 bushings on Corvette
and G 10-30 Series Trucks) from the housing using Tool J-
1614, inserted from the lower end of the housing (fig. 3B-8).
2. Press the new bushing(s) into position using Tool J-
1614. Position the Corvette and G 10-30 Series Truck
bushings as shown in Figure 3B-4.
NOTE:
Service bushings are diam ond bored to size and
require no further reaming.
Side Cover Bushing Replacement
The entire side cover assembly, including bushing, is
serviced as a unit and should be replaced when it is desired
to replace the bushing.
W orm shaft Bearing Race Replacement
A D JU ST E R PLU G RACES
1. All Except Corvette--
Remove the wormshaft
bearing race using Tool J-5822 and a Slide H am m er as shown
in Figure 3B-9.
Corvette--
Using a ham m er and punch, drive the
bearing race out of the adjuster plug.
2. Press the new bearing race into position using Tool
J-5755.
H O U SIN G RACES
1.
Corvette only-
Using a drift or punch (inserted into
the housing from the adjuster plug end) drive the sheet metal
Fig. 3B- 8 -- R e m ovin g Pitm an S h a ft B u s h in g - T y p ic a l
expansion plug out of the lower end of the housing.
2. All Series - Using a drift or punch, drive the bearing
race out of the housing.
3. Press the new bearing race into position using Tool
J-5755 (fig. 3B-10).
4.
Corvette only--
Install a new expansion plug into
the lower end of the housing. Press on the center of the plug
to deform it inward and secure it in the housing. Make sure
the plug is tight or lubricant leakage could result.
Ball N u t Servicing
As a rule, disassembly of the ball bearing nut will not
be necessary if it is perfectly free with no indication of binding
or tightness when rotated on the worm. However, if there is
any indication of binding or tightness, the unit should be
disassembled, cleaned and inspected as follows:
1. Remove screws and clamp retaining the ball guides
in nut. Draw guides out of nut.
2. T urn the nut upside down and rotate the wormshaft
back and forth until all the balls have dropped out of the nut
into a clean pan. W ith the balls removed, the nut can be
pulled endwise off the worm.
Fig. 3 B - 9 ~ R e m o v in g A d j u s t e r Plug Be a rin g Race