Check Steering Axis Inclination; Check Toe-Out On Turns; Minor Repairs - Pontiac tempest 1968 Service Manual

FRONT SUSPENSION 3 - 5
then be taken with the instrument bearing 120°
around the wheel from where the first reading was
taken.
6. Use the same procedure for taking the third
reading.
7, Average the three readings to find the actual
toe-in.
SET TOE-IN
1. Remove horn button and set gear on high point
of worm by turning steering wheel until mark on
shaft is exactly at top. This mark locates the high
point, or middle of gear travel.
2. a. On Pontiac and Firebird loosen tie rod end
clamp bolts. To increase toe-in turn right tie tube
in direction of rotation of wheels, when car moves
forward; turn left tie rod tube in opposite direction.
Turn both tubes an equal amount until toe-in is 0"
to 1/8".
b. On Tempest loosen tie rod sleeve clamp
bolts. To increase toe-in - turn left tie rod sleeve
in direction of rotation of wheels, when car moves
forward; turn right tie rod sleeve in opposite
direction. Turn both sleeves an equal amount until
toe-in is 0 to 1/8".
3. Make sure front wheels are straight ahead by
measuring from a reference point at same place on
each side of frame center to front of wheel rims.
Ji measurements are not equal, turn both tie rod
tubes in same direction (so as not to change toe-in)
until measurements become equal. Re-check toe-in
since toe-in measurement is accurate only with
wheels in straight-ahead position.
4. Tighten tie rod adjuster sleeve bolts to 17 lb. ft.
torque, making sure bolts are to low side of tie rod
and at a 0-15° angle rearward from horizontal po­
sition on Pontiac and Tempest, 0-15° angle forward
from horizontal position with bolts on the high side
of tie rod on Firebird models.
CHECK STEERING AXIS INCLINATION
Generally there is no need to check steering axis
inclination unless a problem exists after setting
caster and camber to specification. Failure to obtain
correct measurement indicates a bent or damaged
steering or suspension part.
CHECK TOE-OUT ON TURNS
Check toe-out after any necessary corrections to
camber, caster, and toe-in have been made.
1. Check with any reputable front end aligning
equipment, using full floating turn tables. With front
wheels resting on turn tables, turn wheels to left
until left wheel has been turned 20° from straight
ahead. The right wheel should have turned 18° to 19°.
2. Turn wheels to right until right wheel has been
turned 20° from straight ahead. Left wheel should
have turned 18° to 19°.
3. Incorrect toe-out on turns may be caused by
incorrect front end adjustments, but generally indi­
cates bent steering arms which must be replaced.
Replacement of one or both steering arms should
be followed by a complete front end check.
MINOR REPAIRS
FRONT WHEEL BEARING REPLACEMENT (Fig. 3-1)
1. Remove hub caps and raise vehicle.
2. Pry out dust cap and remove cotter pin, wheel
adjustment nut and washer.
3. Remove tire, wheel and brake drum end from
spindle with a gentle rocking motion. Ii car is
equipped with disc brakes remove brake caliper
prior to removing disc hub from spindle.
CAUTION: When whee I is partially loose on
spindle, remove outer wheel bearings. DO NOT
DROP BEARINGS.
NOTE: In some cases it may be necessary to
back off brake adjustment to remove brake drum
and wheel assembly.
4. Remove inner bearing from hub by tapping out
inner grease seal with a brass drift. Discard seal.
5. Wipe old grease out of wheel hub and from
steering knuckle.
6. Wash bearings in solvent and air-dry. Do not
spin dry with compressed air. Inspect bearings and
races for cracking, pitting, etching, etc.
NOTE: Bearings and outer races are mated parts.
If necessary to replace either one, both bearing
assembly and outer race MUST be replaced.
7. I i necessary to replace a bearing outer race,
drive out with a brass drift inserted behind race in
notches in hub. Use care when installing new race
to start it squarely into hub, to avoid distortion and
possible cracking. Install outer race of outer bear­
ing with J 8849. Install outer race of inner bearing
with J 8914. Use handle J 8092 with both installers.