21965253 S1 Compatible Clutch Servo Repair Kit for Volvo FH

What does a clutch servo repair kit do?

This clutch servo repair kit is engineered to renew the sealing elements that undergo frequent wear within the clutch hydraulic circuit. By replacing worn components, it helps restore clutch actuation to its original performance levels using heavy-duty grade materials. This kit is a specialized solution for maintaining the integrity of the clutch system in heavy commercial vehicles.

Vehicle and engine compatibility

This component is specifically designed for Volvo FH models, including variants such as the 400, 420, 440, 460, 480, 500, 520, and 540 series. It is compatible with Volvo FH (FH4/FH5) equipped with D13K engines. Ensuring proper fitment ensures the clutch system operates reliably under heavy-duty loads.

Installation and maintenance

For successful installation, workshop technicians should verify the cylinder type and seal orientation against the removed part. It is essential to ensure proper lubrication and follow standard bleeding procedures during assembly to prevent air from compromising the hydraulic circuit. If the cylinder bore shows signs of scoring, a complete unit replacement may be more appropriate.

Troubleshooting and selection

Maintaining the clutch servo prevents uneven pedal feel and ensures smooth gear engagement. Regular inspection of seals and O-rings can prevent costly downtime for fleet managers and service providers.

OE cross-reference

306.01.0012.01 (Clutch Servo Repair Kit) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 21965253S1.