Once the inspection is complete and you have determined that there are no issues or problems with the existing clutch or operating system, installation of the new clutch can be accomplished as follows (note: every vehicle and clutch design is different and may vary):
- Lightly grease the splines of the disc and slide the new disc on the input shaft to insure fit and smooth travel, and wipe off any excess grease. Replace Pilot bearing/bushing, and apply a light coat of motor oil to bushings, or high temperature bearing grease to needle-type bearings.
- Use an alignment tool to center the disc against the flywheel. Manually tighten pressure plate bolts using a star or diagonal pattern. ACT recommends using metric grade 10.9 (SAE grade 8) or stronger fasteners. The use of high temperature thread locking compound is recommended for performance applications. Tightening torque specifications will vary with bolt size and grade. The following torque specifications are recommended by ACT for new pressure plate bolts with the corresponding sizes using metric grade 10.9 or SAE grade 8 bolts:
7mm x 1.0 15 ftlbs / 20Nm 8mm x 1.0 25 ftlbs / 34Nm 8mm x 1.25 26 ftlbs / 35Nm 10mm x 1.25 50 ftlbs / 68Nm 10mm x 1.5 50 ftlbs / 68Nm 5/16 x 18 29 ftlbs / 39Nm 5/16 x 24 29 ftlbs / 39Nm 3/8 x 16 45 ftlbs / 61Nm 3/8 x 24 48 ftlbs / 65Nm
If you choose factory standard bolts and are unsure of the grade of fastener, use the factory recommended torque values.
- Lightly lubricate the release bearing inside diameter and the mating surfaces between the fork and releaser. Lubricate the clutch linkage as recommended by the vehicle manufacturer.
- Make sure all bellhousing dowels are in correct position and tighten bellhousing bolts. Any misalignment will result in premature clutch failure. Correctly support the transmission during installation. Neglecting to do so may cause clutch damage and premature failure.
- Adjust the clutch release system by following the vehicle manufacturer’s procedures and specifications. Recommended break in for ACT Street Discs is 200-300 miles of mild street driving. Avoid driving habits that would allow excessive slipping or overheating of the clutch. Failure to properly break in the ACT Street Discs may result in clutch damage and premature failure.