Toyota
Dodge Durango
 Service Manual
Suspension » Rear suspension
Diagnosis and testing

Spring and shock

A knocking or rattling noise from a shock absorber may be caused by movement between mounting bushings and metal brackets or attaching components.

These noises can usually be stopped by tightening the attaching nuts. If the noise persists, inspect for damaged and worn bushings, and attaching components. Repair as necessary if any of these conditions exist.

A squeaking noise from the shock absorber may be caused by the hydraulic valving and may be intermittent.

This condition is not repairable and the shock absorber must be replaced.

The shock absorbers are not refillable or adjustable.

If a malfunction occurs, the shock absorber must be replaced. To test a shock absorber, hold it in an upright position and force the piston in and out of the cylinder four or five times. The action throughout each stroke should be smooth and even.

The spring eye and shock absorber bushings do not require any type of lubrication. Do not attempt to stop spring bushing noise by lubricating them.

Grease and mineral oil-base lubricants will deteriorate the bushing rubber.

If the vehicle is used for severe, off-road operation, the springs should be examined periodically. Check for broken and shifted leafs, loose and missing clips, and broken center bolts. Refer to Spring and Shock Absorber Diagnosis chart for additional information.

SPRING AND SHOCK ABSORBER

CONDITION POSSIBLE CAUSES CORRECTION
SPRING SAGS 1. Broken leaf

2. Spring fatigue.

1. Replace spring.

2. Replace spring.

SPRING NOISE 1. Loose spring clamp bolts.

2. Worn bushings.

3. Worn or missing spring tip inserts.

1. Tighten to specification.

2. Replace bushings.

3. Replace spring tip inserts.

SHOCK NOISE 1. Loose mounting fastener.

2. Worn bushings.

3. Leaking shock.

1. Tighten to specification.

2. Replace shock.

3. Replace shock.

    More about «Rear suspension»:

    Description and operation

    Diagnosis and testing

    Removal and installation

    Disassembly and assembly

    Specifications

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