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One Alto Way
Atmore, AL 36504

EMAIL:
sales@altousa.com

PHONE:
251.368.7777

FAX:
251.368.7774

System Inspection

Examination of the removed clutch system components in many cases can reveal the reason for the failure of the removed unit. If the removed clutch components failed due to reasons other than normal wear or driver abuse, a close inspection can identify the reason for failure, and prevent premature failure of the replacement unit.

If oil is present on the facing of the clutch disc, check the rear main seal for leakage. If the oil appears to be grease then examine the release bearing. It is possible the bearing was continually rotating because of improper adjustment, or the driver was riding the clutch pedal. There are some bearings that are designed to continually rotate, but for those applications that are not designed to endure this, the bearing will become hot. The grease will liquefy and saturate the facing. Also examine the quill of the transmission. There may have been excessive grease placed on the quill, which contaminated the facing.

Examine the input shaft of the transmission. Clean the shaft with a wire brush and inspect. If there is excessive wear, replace the input shaft. For reinstallation, place a light film of white lithium grease on the input shaft. Do not over lubricate. Excessive grease will contaminate the disc facing.

Look for evidence of engine and transmission misalignment. Misalignment can cause non-release of the clutch system. There are certain conditions to look for that are caused by misalignment. The pilot bearing/bushing will have more wear on one side than the other. Uneven wear or tapered splines on the input shaft or disc splines indicate misalignment. Broken cushion segments on the clutch disc are also indications of misalignment. Broken mounts, warped bellhousing, damaged vehicle frame, or a flywheel that is wobbling on the crankshaft flange mount can cause alignment problems.