Cleaning and Inspection

Wash all parts except friction discs in cleaning solvent and blow dry with compressed air.

Examine friction discs for:

1. A glazed surface which may be recognized by a smooth, shiny and sometimes darkened appearance.

2. Worn or grooved surface.

4. Oil impregnated linings which will sometimes accompany glazing.

5. Cracked or chipped linings.

Glazed and oil soaked linings may sometimes be reconditioned by soaking in solvents of various types for several hours, blowing dry with compressed air and roughing with medium coarse sandpaper. This procedure may not be successful because oil retained in pores of lining material may come to the surface due to heat developed during normal operation. Grooved linings and excessively worn linings must be replaced. Chipped or cracked linings must also be replaced. Badly glazed and burned linings are probably beyond reconditioning and should be replaced.

Steel discs that are grooved or warped should be replaced. Depress steel disc buffer balls with fingertip. If they do not snap back in place, spring is worn and buffer assembly musl be replaced.

Check bearing race inside clutch shell. If it appears groovec or pitted, the shell should be replaced.

Revolve clutch hub roller bearing. If it sticks or feels rough inner bearing race is probably pitted and should be replaced Disassemble clutch hub as follows:

Remove three bearing plate springs (14), slip bearing plate (15) off hub pins and remove bearing retainer (16). If inner race thus exposed proves to be worn, replace hub.

Clutch springs occasionally set or become fatigued especially when excessive heat has been produced by operating motorcycle with a slipping clutch. If this has been the case, or if clutch discs are in good condition but it was not possible to obtain a suitable clutch ad justment, check clutch spring free length. Also check spring compression using the Valve Spring Tester, Pari No. 96797-47. Spring free length should be 1-45/64 in. and compression test should be from 30 to 38 lbs al 1-1/4 in. Replace springs not meeting compression specifications, those with a free length below specified figure, and those having compression testing to near low tolerance range figure.

Lip type seal (18) should be inspected and replaced if worn or damaged.

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