Chevrolet 1977 light duty truck, Руководство по обслуживанию

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CAUTION: I f a clamp type p itm a n arm is used,
spread the p itm an arm ju s t enough, with a
wedge, to slip arm onto p itm an shaft. Do not
spread p itm an arm more than required to slip
over p itm a n shaft with ha n d pressure. Do not
ham m er or damage to steering gear m ay result.
Be sure to install the hardened steel washer
before installing the nut.
2. M ake sure that threads on ball studs and in ball
stud nuts are clean and smooth. Check conndition o f ball
stud seals; replace if necessary.
N O T E : If threads are not clean and smooth, ball
studs m a y turn in sockets w hen attem pting to
tighten nut.
3. Install p itm an sh aft nut or p itm an arm clamp
bolt an d torque to specifications.
4. Position ball stud onto p itm a n arm or relay rod.
Install nut and torque to specifications.
5. Install cotter pin.
N O T E : N ev er back off n u t to align cotter pin,
always tighten nut to next slot that lines up with
hole in stud.
6. Lubricate ball studs.
7. Lower the vehicle to the floor.
S teerin g C on n ectin g Rod
Removal
1. R em ove cotter pins from ball studs and remove
castellated nuts.
2. Remove ball studs from steering arm and
p itm a n arm boss with a heavy h a m m e r and striking
o ther side o f boss with lighter h a m m e r (similar to
m ethod shown in (fig. 3B-105).
Installation
CAUTION: See the C A U T IO N on page 1 o f
this section regaring the fasteners referred to in
step
1. M ake sure that threads on ball studs and in ball
stud nuts are clean and smooth. Check condition o f ball
stud seals-replace if necessary.
N O T E : If threads are not clean and smooth, ball
studs m ay turn in connecting rod w hen attem pting
to tighten nut.
2. Install ball studs in steering arm and pitm an
arm. Be sure to install the long end o f the connecting rod
assembly to the p itm a n arm.
3. Install ball stud nuts a n d torque to
specifications.
N O T E : N e v e r back off n u t to align cotter pin,
always tighten nut to next slot that lines up with
hole in stud.
4. Install cotter pins and lubricate ball studs.
NOTE: For p ro p er alignm ent and o rientation o f
connecting rod clamps see figure 3B-109.
POWER S TE ER IN G SYSTEM
Pow er Steering Gear
Removal
1. Disconnect hoses at gear. W hen hoses are
disconnected, secure ends in raised position ot prevent
d rain ag e o f oil. C a p or tape the ends o f the hoses to
prevent entrance o f dirt.
2. Install two plugs in g ear fittings to prevent
entrance of dirt.
3. Remove the flexible coupling to steering shaft
flange bolts (G, C and K models) or the lower universal
jo in t pinch bolt (P models). Mark the relationship o f the
universal yoke to the stub shaft.
4. Mark the relationship o f the p itm an arm to the
p itm an shaft. Remove the p itm an shaft nut or pitm an
arm pinch bolt and then remove the p itm a n arm from
the pitm an shaft using Puller J-6632 (fig. 3B-50).
5. Remove the steering g ear to fram e bolts and
remove the g ear assembly.
6. G, C and K Models - Remove the flexible
coupling pinch bolt and remove the coupling from the
steering gear stub shaft.
Installation (Fig. 3B-110)
CAUTION: See C A U T IO N on page 1 o f this
section regarding the fasteners referred to in
steps 1, 3, 4 a n d 5.
1. Install the flexible coupling onto the steering
gear stub shaft, aligning the flat in the coupling with the
flat on the shaft. Push the coupling onto the shaft until
the stub shaft bottoms on the coupling reinforcement.
Install the pinch bolt and torque to specifications.
N OTE: The coupling bolt must pass through the
shaft undercut.
2. Place the steering gear in position, guid ing the
ccoupling bolt into the steering sh aft flange.
3. Install the steering gear to fra m e bolts and
torque to specifications.
4. If flexible coupling alignm ent pin plastic spacers
were used, make sure they are buttomed on the pins,
tighten the flange bolt nuts to specifications and then
remove the plastic spacers.
5. If flexible coupling alignment pin plastic spacers
were not used, center the pins in the slots in the steering
shaft flange and then install and torque the flange bolt
nuts to specifications.
P Models
a. Place the steering gear in position, guiding
the stub shaft into the universal jo in t assembly and
lining up the marks m ad e at removal.
NOTE: If a new gear was installed, line up the
mark on the stub shaft with the m ark on the
universal yoke.
b. Install the steering g ear to fram e bolts and
torque to specifications.