21710522 S1 Clutch Servo Repair Kit for Volvo FH

What does a clutch servo repair kit do?

This repair kit is specifically designed to restore the functionality of clutch servos used in heavy-duty commercial vehicles. By replacing worn internal components, this kit helps maintain smooth gear engagement and prevents pressure loss within the clutch actuation system.

Vehicle and engine compatibility

This component is compatible with Volvo FH series trucks, specifically those equipped with D11K engines, including models such as the 400, 420, 440, 460, 480, 500, 520, and 540 variants. It is an essential solution for maintaining the performance of Volvo FH (FH4/FH5) heavy commercial vehicles.

Installation and maintenance guidance

When performing maintenance, technicians should inspect the cylinder bore and piston surface for scoring. If the surfaces are intact, a sealing kit may suffice; however, if the piston surface is compromised, a complete kit including a piston and spring is recommended to ensure a proper seal and consistent pressure.

Troubleshooting and selection

Regular inspection of the clutch servo ensures that the actuation remains precise, preventing premature wear on the release bearing and gearbox components.

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 21710522S1.