Jeep Cherokee
 Service Manual
Clutch » Diagnosis and testing
Clutch contamination

Fluid contamination is a frequent cause of clutch malfunctions. Oil, water, or clutch fluid on the clutch disc and pressure plate surfaces will cause chatter, slip and grab.

During inspection, note if any components are contaminated with oil, hydraulic fluid, or water/road splash.

Oil contamination indicates a leak at either the rear main seal or transmission input shaft. Oil leakage produces a residue of oil on the housing interior and on the clutch cover and flywheel. Heat buildup caused by slippage between the cover, disc and flywheel, can sometimes bake the oil residue onto the components. The glaze-like residue ranges in color from amber to black.

Road splash contamination means dirt/water is entering the clutch housing due to loose bolts, housing cracks, or through hydraulic line openings. Driving through deep water puddles can force water/road splash into the housing through such openings.

Clutch fluid leaks are usually from damaged slave cylinder push rod seals. This type of leak can only be confirmed by visual inspection.

    More about «Diagnosis and testing»:

    Safety precautions

    Installation methods and parts usage

    Clutch diagnostic information

    Clutch contamination

    Improper clutch release or engagement

    Clutch misalignment

    Clutch housing misalignment

    Clutch flywheel runout

    Clutch cover and disc runout

    Clutch diagnosis charts

    Jeep Cherokee Service Manual / Clutch / Diagnosis and testing / Clutch contamination

    Jeep Cherokee Service Manual


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