K 10 P/U 4WD L6-292 4.8L (1985)
FIGURE 3 - BALL JOINT TURNING EFFORT
CHECKING BALL JOINT TURNING EFFORT (K-V10, K-V20)
Front axle ball joint adjustment is generally necessary only when there is excessive play in steering, irregular wear on tires or persistent loosening of the
tie rod is observed.
1.
Raise vehicle on hoist then place jack stands just inside of front springs.
2.
Disconnect connecting rod and tie rod to allow independent movement of each steering knuckle.
3.
Apply a fish-scale to the tie rod mounting hole of the steering knuckle arm. With the knuckle assembly in the straight-ahead position, determine
the right angle pull required to keep the knuckle assembly turning after initial break-away. This pull should not exceed 25 lbs for each knuckle
assembly, in either direction.
4.
If the turning effort exceeds 25 lbs in either direction adjustment or replacement will be necessary. Follow the procedure in Section 3C of the 1988
Light Duty Service Manual X-8832.
Technical Service Bulletin # 8690
Date: 860501
Tires (All Season) - Irregular or Premature Wear
Number:
86-90
Section:
3
Date:
May 1986
Subject:
IRREGULAR/PREMATURE TIRE WEAR - ALL SEASON TIRES
1985-86 CELEBRITY MODELS WITH "ALL SEASON
Model and Year:
TIRES" REAR POSITION ONLY -1985-86 CAPRICE & MONTE CARLO MODELS WITH "ALL SEASON TIRES" FRONT POS
TO:
ALL CHEVROLET DEALERS
CONDITION
Some 1985-1986 Celebrity models, 1985-1986 Caprice and Monte Carlo models, and some 1985-86 light duty trucks with original
equipment all season tires ("M & S" rating on sidewall) may experience premature/irregular tire wear on non-drive axles. The wear
may be identified as a cupping condition, usually on the outer shoulder of the tire. If allowed to continue, premature wear out of
tread may occur.
CAUSE
The single, most contributing cause of this type of wear, except for abusive driving, is excessive toe-in. Lack of tire rotation and low
inflation pressures will also exaggerate this condition.
VEHICLES INVOLVED