mantic CLUTCH USA GTB 149 Mantic Twin Disc Clutch Kits Installation Guide
- June 12, 2024
- mantic CLUTCH USA
Table of Contents
mantic CLUTCH USA GTB 149 Mantic Twin Disc Clutch Kits
Product Information
- Product Name: C5 and C6 Mantic Clutch Kit
- Manufacturer: Mantic Clutch
- Model Number: GTB 149
- Issue: 4
- Compatibility: C5 and C6 Corvette
Product Usage Instructions
- Unpack all of the Clutch Kit components and thoroughly clean all parts using lacquer thinner or brake cleaner that does not leave a residue.
- Check that the clutch discs slide freely on the transmission input shaft.
- Insert the Cover Assembly mounting bolts through the flywheel from the engine side, ensuring the heads of the bolts fit snugly into the groove on the engine side of the flywheel.
- Bolt the Flywheel to the engine crankshaft using the supplied bolts. Apply Loctite 272 on the threads and tighten to the manufacturer’s specification.
- Slide the drive blocks onto the clutch mounting bolts, making sure the heads of the bolts are still in the groove on the back of the flywheel.
- Mount the clutch disc with the side marked “Flywheel Side” against the flywheel and insert an alignment tool through the clutch disc spline.
- Assemble the intermediate plate onto the drive blocks, ensuring that care is taken when handling the intermediate plate spring clips as they are factory set for release.
- Mount the Clutch Disc with the Pressure Plate Side against the Cover or Pressure Ring.
- Slide the Cover Assembly over the clutch mounting bolts, making sure the Drive blocks are sitting in the groove of the Flywheel and Cover Assembly, and that all of the heads of the bolts are still in the groove on the back of the flywheel. Ensure blocks do not ride up on the step on the Flywheel or Cover during assembly.
- To check bearing compression on a bell housing and torque tube, leave the CSC (Clutch Slave Cylinder) fully extended as it sits with the spring. Dimension B should be .500-.725 greater than dimension A.
Contact Information
- Mantic Clutch USA
- Phone (US Residents): 919-500-9460
- Email : sales@manticclutchusa.com
- Website : www.manticclutchusa.com
Notes specific
- Use the new flywheel bolts for installation
- Kit is designed to be a Direct Bolt in. We recommend double-checking the measurements on the Slave / CSC. Salve / CSC should be compressed .500- .725” when the trans is installed. (See pg 4-5 )
- Check finger height to flat on the cover. Should measure .390-.410”
Kit assembly instructions
-
Unpack all of the Clutch Kit components and Thoroughly Clean all parts supplied. Use a lacquer Thinner or Brake Cleaner that does not leave a residue.
-
Check clutch discs slide freely on the transmission input shaft.
-
Insert the Cover Assembly mounting bolts through the flywheel from the engine side of the flywheel and ensure the heads of the bolts fit snugly into the groove on the engine side of the flywheel.
-
Bolt the Flywheel to the engine crankshaft with the bolts supplied. Use a suitable Loctite (Loctite 272) on the threads and tighten to the manufacturer’s specification.
-
Slide the drive blocks onto the clutch mounting bolts supplied, making sure the heads of the bolts are still in the groove on the back of the flywheel. (To check put your finger through the hole in the flywheel opposite each bolt and feel that the head is in place)
-
Mount the clutch disc with the side marked “Flywheel Side” against the flywheel and insert an alignment tool through the clutch disc spline.
-
Assemble the intermediate plate onto the drive blocks as shown.
Note : Care must be taken when handling the intermediate plate spring clips as they are factory set for release. If they are damaged in any way the clutch may not operate as designed. The Foam Packing must be removed just before installation. Make sure the heads of the bolts are still in the groove on the back of the flywheel. -
Mount the Clutch Disc with the “Pressure Plate Side” against the Cover or Pressure Ring.
-
Slide the Cover Assembly over the clutch mounting bolts and make sure the Drive blocks are sitting in the groove of the Flywheel and Cover Assembly and that all of the heads of the bolts are still in the groove on the back of the flywheel.
-
Place the supplied lock washers (failure to use the supplied lock washers may result in the nuts working loose and the clutch failing) and nuts over the clutch mounting bolts and tighten each by hand, until the heads have seated correctly in the groove on the back of the flywheel.
Ensure the drive blocks have seated correctly on the Flywheel and Cover, (i.e. not sitting up on the machined step that positions the drive blocks).
Tighten each nut one half a turn at a time, always tightening the nut diagonally opposite the previously tightened nut. The final torque for the nuts is 25 ft-lbs ( 33Nm ). When the nuts are tightened the fingers of the diaphragm should now be even. (No variation of the heights of each diaphragm finger). If there is variation of over 1mm the cover has not been fitted correctly and should be loosened and checked as per the procedure above.
To check bearing compression on a bell housing and torque tube Leave CSC fully
extended, as it sits with the spring.
Dimension B should be .500-.725” Greater than dimension A
Contact Mantic Clutch USA
- US Residents : 919-500-9460
- Email : sales@manticclutchusa.com
- Website : www.manticclutchusa.com