Initial Inspection and Diagnostic Overview
NOTE: The front shock absorber is part of the front spring and shock absorber assembly and requires disassembly to replace.The electronic actuator is not serviceable. If damaged the shock absorber must be replaced.
All vehicles are equipped with low-pressure gas-filled hydraulic shock absorbers of the direct acting type. They must be serviced as an assembly.
1. Oil Leak: A light film of oil (weepage) on the upper portion of the shock absorber and rear shock absorber is permissible and is a result of proper shock absorber and rear shock absorber lubrication. Weepage is a condition in which a thin film of oil may be deposited on the shock absorber and rear shock absorber outer tube (body) and is normally noticed due to the collection of dust in this area. Shock absorber and rear shock absorbers which exhibit this weepage condition are functional units and should not be replaced. Leakage is a condition in which the entire shock absorber and rear shock absorber body is covered with oil and the oil will drip from the shock absorber and rear shock absorber onto the pavement.
If this condition exists:
a. Make sure fluid observed is not from sources other than the shock absorber.
b. Replace the worn or damaged shock absorber.
2. Vehicle Sag: Many times shock absorbers are replaced in an effort to solve a vehicle sag concern. Shock absorbers by design are hydraulic damping units only and unlike suspension springs, do not support any suspension loads. Therefore, replacing a shock absorber will not correct a vehicle sag concern.
3. Replacement in Pairs: In the past, it was recommended shock absorbers be replaced in pairs if one unit became unserviceable. Improved sealing, due to new technology and improved manufacturing quality checks, have added to the functional reliability of shock absorbers. Therefore, shock absorbers no longer need to be replaced in pairs when only one unit is not serviceable.