Hoist Test

After a road test, it is sometimes useful to do a similar test on a hoist.(Use an axle hoist, not a frame hoist. An axle hoist will not change the driveline angles. If only a frame hoist is available, axle stands should be used.)
1. Elevate the front wheels slightly, check to make sure that both wheels are turning freely, START and run the engine rpm up with the vehicle in gear.
2. Explore the speed range of concern using the drive/cruise/coast/float tests.
3. A coast down in N (neutral) should also be conducted. If the vehicle is free of vibration when operating at a steady indicated speed and behaves very differently in drive and coast, an axle concern is likely.

Accessories Mounting Inspection
Inspect the drive belt accessory mounting brackets and hardware for loose fasteners or improper belt alignment.

Drive Belt Inspection
Inspect the drive belt and pulleys for wear or damage. The automatic tensioner has belt wear indicator marks. If the indicator mark is not between the min and max marks, the drive belt is worn. With the engine idling, check for irregular motion of the drive belt.

Exhaust System Inspection
Raise the vehicle on a hoist and check for broken or loose clamps or brackets.

Tire/Wheel Inspection
Inspect the tire/wheel for extreme or unusual wear, damage, cupping or flat spots. Verify that the correct tire size and wheel rim are used. If a tire/wheel is damaged, the suspension components may suffer misalignment, abnormal wear, or damage that might have contributed to the tire/wheel damage.