AP Racing Catalogue Issue 4

93 visit www.apracing.com for installation drawings & up to date product range details - BASKET TYPE CLUTCHES “Basket” type clutches have the clutch drive lugs built into the “flywheel” (basket) and the cover is bolted to the top of the lugs. On this type of clutch the assembly sequence is reversed, starting with the highest numbered intermediate plate at the flywheel (basket) end and fitting the main pressure plate last, just before the cover. - CLUTCH REMOVAL Refit the clutch installation clip. Progressively release clutch cover retaining nuts and remove clutch from flywheel. - HUBS Do not grease the splines in the hub: the grease can be dispersed by centrifugal force, outwards towards the Carbon friction faces, causing contamination and clutch slip. ASSEMBLING AND INSTALLING - A PULL TYPE CARBON/CARBON CLUTCH This type of clutch has the release- bearing fulcrum inside the clutch and requires the diaphragm spring fingers to be pulled (away from the flywheel), in order to release the clutch (Fig 4). Many pull type clutches are supplied with an installation plate fitted onto the spring (Fig 5). This plate maintains the clutch in a partially released condition to assist the installation and removal of the clutch from the flywheel. The plate should be used whenever the clutch is installed or removed, failure to use the plate can result in the bottom carbon plate being trapped under the clutch cover lugs, resulting in damage to the carbon plate and other clutch components. Before installing the clutch onto the flywheel, ensure that the plates are correctly assembled into the clutch in their original positions. First install the diaphragm spring into the clutch cover / housing with the convex side towards the flywheel , and fit the release fulcrum through the centre of the diaphragm, so that the “Mushroom” head sits on the core formed by the tips of the diaphragm spring fingers. N.B. If an installation plate is fitted, this will retain the diaphragm and release fulcrum, and this step is omitted. Then install the main pressure plate into the clutch housing, (see pressure plate service sheet), with the raised fulcrum against the diaphragm spring, and the identification mark adjacent to the similar mark on one of the clutch lugs. Next, install the carbon plates in their original positions as follows: The carbon Intermediate plates are identified with notches on the outside edge (Fig. 2). The plates are not all identical and must be installed in the correct sequence and the correct way up. Install number 1 Intermediate plate (1 notch), next to the Main Pressure Plate, with the marking facing away from the Main Pressure Plate and the highest numbered plate (this depends whether it is a 2, 3, or 4 plate), last, against the flywheel. The in- termediate plates also have a paint line marked on the external edge and this should be adjacent to the corresponding line marked on one of the lugs on the Clutch Cover (sometimes called the Basket). The Driven Plates are similarly numbered with dots or notches on the drive lug surfaces (Fig. 2). These must be fitted in sequence, in the same way as the Intermediate mates with the number 1 Driven Plate, next to the number 1 Intermediate Plate, with the marking towards the flywheel. Continue fitting the remaining carbon Intermediate and Driven Plates in sequence. The Hub must be fitted prior to fitting the last Driven plate and Intermediate, with the flywheel bolt relief and the flange towards the flywheel (see Fig 2a). Ensure the marked Hub drive tooth is engaged with the outlined drive slots in the carbon plates. Complete the assembly by fitting the last Intermediate and Driven Plates N.B. Carbon Clutches always have a Carbon Intermediate plate next to the flywheel. Ensure that the bottom carbon intermediate plate is located correctly and install the clutch onto the flywheel. Tighten the retaining nuts down progressively, in a diagonally opposite (Fig 5) (Fig 4) CARBON / CARBON CLUTCH - Operating Instructions pattern, to the recommended torque. When the clutch is tightened down the installation plate will become loose, remove the retaining circlip, and remove the installation plate from the release fulcrum. NB - The installation plate should be retained for future clutch removal. Prior to fitting the slave cylinder, the piston in the slave cylinder should be pushed out to maximum travel, towards the clutch. Ensure that the release fulcrum in the clutch is fitted into slave cylinder piston. With the slave cylinder in place, the release fulcrum should be pulled into contact with the spring fingers, and the circlip refitted into thegrooveon the release fulcrum. - BASKET TYPE CLUTCHES “Basket” type clutches have the clutch drive lugs built into the “flywheel” (basket) and the cover is bolted to the top of the lugs. On this type of clutch the assembly sequence is reversed, starting with the highest numbered intermediate plate at the flywheel (basket) end and fitting the main pressure plate last, just before the cover. - CLUTCH REMOVAL Remove circlip from release fulcrum, remove slave cylinder, refit the clutch installation plate and circlip. NB - The installation plate is machined differently on either face, to accommodate “new / re-shimmed”, or “worn” clutches. Progressively release clutch cover retaining nuts and remove clutch from flywheel. - HUBS Do not grease the splines in the hub; the grease can be dispersed by centrifugal force outwards, towards the carbon friction faces causing, contamination and clutch slip. CUSTOMER NOTES