Remove the front cover plate (13) and diaphragm assembly (12) from the insulator plate (11).
Remove the insulator and pressure plate assembly (11 and 9) from the hub-and-back plate. Pry the insulator
plate from the pressure plate only if replacement of the parts is necessary. Six roll pins (10) hold the insulator
plate to the pressure plate. Remove the rollpins only if replacement of the parts is necessary.
Remove the six release springs (3) from the hub-and-back plate.
Remove the three driving plates (4, 6 and 8) and two center plates (5 and 7) from the hub-and-back plate (2).
Remove the nameplate (16) from the front cover plate (13) only if replacement of the parts is necessary.
Remove the nameplate by prying the two drive screws (17) from the front cover plate. The specification number
of the clutch is found on this nameplate.
4-4.2.2 Cleaning and Inspection
Thoroughly clean all parts with suitable cleaning agents. After cleaning, dry with compressed air. Lubricate all
machined surfaces with clean oil. Examine each part after cleaning to make certain all foreign matter has been
Inspect castings for cracks. Replace cracked castings. Inspect tapped holes for damaged threads. Chase
damaged threads with a standard tap of the correct size. Replace all castings that cannot be repaired properly.
Inspect the teeth of the driving rings. Replace a damaged driving ring.
Inspect all flexible hoses for cracks, sponginess, or other damage. Replace a damaged hose.
Inspect the diaphragm for surface cracks and hardening. Replace a damaged or questionable diaphragm
Inspect all gear teeth for cleanliness and damage. Foreign particles tend to collect in the root of the gear teeth.
Clean thoroughly and repair minor nicks with a fine file. Replace parts with gear teeth that cannot be repaired.
It is very important that all air holes and hoses be clean and clear.
Inspect the driving plates for cracks, nicks or chips. Replace damaged driving plates.
Inspect for cracked or warped pressure plate. Replace the plate if it is damaged.
Replace return springs as standard practice after any clutch failure.
Place the hub-and-back plate (2) on a workbench with the hub side up.