K 1500 Truck 4WD V8-350 5.7L (1986)
Constant Velocity Joint Boot: Technical Service Bulletins
Front Wheel Driveshaft Boot - Damage Prevention
File In Section: 4 - Drive Axle
Bulletin No. 56-43-01
Date: March, 1995
Subject:
Preventing Front Wheel Driveshaft Boot Damage
Models:
1995 and Prior Light Duty Trucks with Four Wheel Drive (4WD) or All Wheel Drive (AWD)
When diagnosing a vehicle for customer concerns such as noise and/or vibrations, it is often necessary to run the vehicle while it is supported in the air
by hoists or jack stands. On light duty truck models with four wheel drive (4WD) or All Wheel Drive (AWD) the front suspension should not be allowed
to hang free while performing on-hoist testing. It the front suspension is allowed to hang free, the CV joint will be at a very high angle. This will likely
result in damage to the front wheel driveshaft boots. In addition, extra vibrations may occur and may damage the front wheel driveshaft joints.
When on-hoist testing an AWD or 4WD light duty truck, support the outer end of the lower control arm using jack stands. This will reduce the CV joint
angle and prevent damage to the front wheel driveshaft assembly.
