Essential clutch release bearing fitment checks

Blue Print shares technical tips to help technicians ensure correct fitment and a long service life

Essential clutch release bearing fitment checks
This guide tube from a Nissan D22 shows scoring and damage caused by an incorrectly installed clutch release bearing.

Before fitting any new clutch components, Blue Print advise technicians to inspect the clutch fork for corrosion, wear or damage and inspect the guide tube for pitting, scoring, wear and for any remains of the old bearing.

Blue print said: “Replace any non-serviceable parts as necessary and check that the new bearing moves freely on the guide tube.

“When replacing the clutch release bearing, care must be taken to ensure that it’s fitted correctly.

“It is possible to inadvertently fit the bearing 180 degrees out and in doing so severely restrict the pivoting action of the bearing on the clutch fork.

“If fitted incorrectly, bearing failure is inevitable and damage will occur to the guide tube, which is part of the gearbox front cover.”

Positioning

It’s important to note the position of the release bearing retainers on the clutch fork, the bearing should pivot on the fork as it travels along the guide tube.

Incorrect positioning will mean the bearing cannot pivot on the fork and as a result the release bearing will drag against the guide tube causing premature wear, damage to the guide tube and will eventually lead to clutch failure.

Application of a lithium-based grease to the guide tube, clutch fork pivot point and release bearing retainers is important for its long term operation, but over lubrication must be avoided to prevent contamination of the friction surfaces.

Incorrectly fitted clutch components will invalidate the warranty.

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