21008344 S3 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 wear out most often in the clutch hydraulic circuit, restoring clutch actuation to its original performance. By replacing the internal seals, O-rings, and dust boots, workshop technicians can extend the service life of the existing cylinder assembly when the bore and piston surfaces remain in good condition.

Vehicle and engine compatibility

This kit is compatible with Volvo FH (FH4/FH5) vehicles, specifically those equipped with D13K engines and various power outputs including 420, 440, 520, 500, 400, 480, 460, and 540 models. It serves as a precise solution for maintaining the hydraulic integrity of the clutch system in these heavy commercial vehicles.

Installation and maintenance guidance

For successful installation, technicians should verify the cylinder type and seal orientation against the removed part. It is essential to ensure proper lubrication and complete bleeding of the hydraulic circuit during the assembly process to prevent air pockets. If the cylinder bore shows signs of scoring or is beyond service limits, a complete unit replacement is recommended.

Troubleshooting and selection

Consult your authorized distributor.

OE cross-reference

306.01.0012.03 (Clutch Servo Repair Kit) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 21008344S3.