Econoline E450 V8-5.4L SOHC VIN L (1998)
Suspension Strut / Shock Absorber: Testing and Inspection
1. Raise and support the vehicle.
WARNING: THE LOW PRESSURE GAS SHOCK ABSORBERS ARE CHARGED WITH NITROGEN GAS TO 931 KPA (13S PSI)
FOR 1-3/16 INCH BORE, AND 1034 KPA (150 PSI) FOR 1-3/8 INCH BORE. DO NOT ATTEMPT TO OPEN, PUNCTURE, OR
APPLY HEAT TO THE SHOCK ABSORBERS.
2. Inspect for evidence of fluid leakage.
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Leakage is a condition in which the shock absorber body is covered with oil. In severe cases there may be oil dripping from the shock.
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Weepage is a light film of oil on the shock absorber piston rod and is a result of proper shock lubrication. Weepage is a condition in which a
thin film of oil is deposited on the upper portion of the shock body and is normally noticed due to the collection of dust in this area.
3. Inspect for damaged or worn shock absorber insulators.
4. Disconnect the lower end of the shock absorber.
5. Inspect the shock for proper operation.
(1) Compress and extend the shock absorber as fast as possible, using as much travel as possible.
(2) Inspect for the following abnormal conditions:
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A lag or skip occurring during mid-stroke when the shock absorber is properly installed and primed.
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Any seizing during the shaft full travel, except at either end of the travel.
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Any noise, other than a faint swish, such as a clicking noise upon fast stroke reversal.
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Any lateral motion of the piston rod in relation to the body with the shock absorber fully extended.
6. Replace any unserviceable shock absorbers or shock absorber insulators.
