Shock Strut Weeping Condition Identification – Chrysler Dodge Jeep Ram Fiat

NUMBER: 02-001-15
GROUP: Front Suspension
DATE: January 10, 2015

 

SUBJECT:

Shock Strut Weeping Condition Identification

 

OVERVIEW:

This bulletin involves correctly diagnosing strut or shock absorber conditions involving fluid residue on the external surface.

 

SYMPTOM/CONDITION:

The customer may describe fluid residue on the external surface of the strut or shock absorber.

 

DISCUSSION:

Strut/Shock absorber piston rod seals perform 3 functions:

1. Provide sealing of internal fluid.
2. Seal the shock from dust and contamination in the environment.
3. Self lubricate by applying a thin film of fluid to the piston rod.

NOTE: Residual fluid near the rod seal at the top of the strut/shock is normal. Only when there is noticeable dripping of fluid down the strut/shock should replacement be considered.

Use the following images as a guideline for strut/shock replacement.

 

Light fluid film in the top one-third of the strut/shock is considered normal (Fig. 1). Strut/Shock replacement not recommended, provided the strut/shock is functioning (dampening) as designed.

Fig. 1 Light Fluid Film – Replacement Not Recommended

 

Minor weep – drops of shock fluid extending down beyond one-third or more of the strut/shock body length (Fig. 2). Strut/Shock replacement is recommended.

Fig. 2 Minor Weep – Replacement Recommended

 

Major weep – fluid covers two-thirds or more of the strut/shock body length (Fig. 3). Strut/Shock replacement is recommended.

Fig. 3 Major Weep – Replacement Recommended

 

FAILURE CODE:

Information Only