21710522 S1 Compatible Clutch Servo Repair Kit for Volvo VNL

What does a clutch servo repair kit do?

This clutch servo repair kit is engineered to restore the efficient operation of the clutch hydraulic circuit by renewing worn sealing elements. It serves as a precise solution for maintaining the clutch servo, ensuring that actuation remains smooth and consistent under heavy commercial vehicle operating conditions.

Compatible vehicles and engines

Designed for use in Volvo VNL trucks equipped with D13 engines, this kit is compatible with the specific requirements of these heavy-duty power units. It provides a reliable alternative to complete unit replacement when the cylinder bore and piston remain in good condition.

Installation and maintenance

For successful installation, technicians should verify the cylinder type and seal orientation before proceeding. It is essential to ensure proper lubrication and air bleeding during the assembly process to prevent air pockets in the hydraulic circuit. Check the compatibility list for exact fitment.

Troubleshooting and selection

Regular inspection of the clutch servo components can prevent sudden failures in the clutch system. If the cylinder bore shows significant scoring or wear beyond service limits, a complete unit replacement may be more appropriate than a seal kit.

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.