C 2500 3/4 Ton Pickup 2WD V8-350 5.7L VIN M 4-bbl (1984)
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 # 88T1845
Date: 890101
Brakes - Pull/Lead When Braking
GMC NUMBER:
88-T-184
GROUP:
5 - Brakes
DATE:
January, 1989
CORPORATE
NUMBER:
865006R
SUBJECT:
LEAD WHILE BRAKING
MODELS:
1984-86 K1-2 AND 1987-88 V1-2
A condition described as directional lead (either right or left) while braking may be addressed on the models listed above by careful inspection,
adjustment or repair of the vehicle's tires, suspension, steering or brake components. The following procedures have been developed to systematically
address the area(s) that should be inspected and adjusted. Evaluation of a vehicle's brake performance is not intended to be made with the vehicle
operator's hands removed from the steering wheel. Vehicles that exhibit directional bias under these conditions are not considered to exhibit brake lead.
Before road testing the vehicle, perform the following services:
NOTICE:
Follow the service procedures in the 1988 Light Duty Service Manual X-8832 unless noted differently.
Preliminary Inspection:
^
Inspect tires for excessive, uneven wear - replace if necessary.
^
Equalize tire pressures.
^
Torque leaf spring-to-axle U-bolts to high limit
