Installation Instructions

81700·82100·82400 WSM,11770
SERVICING
2 CLUTCH
Clutch Disc Wear
1. Measure the depth from clutch disc surface to the top of rivet
at least 10 poi nts with a depth gauge.
2. If the depth is less than the allowable limit, replace.
3. If oil is sticking to the clutch disc, or disc surface is
carbonized, replace clutch disc.
Backlash between Clutch Disc and Clutch Shaft
1. Mount the clutch disc onto the propeller shaft.
2. Hold the propeller shaft so that it does not rotate.
3. Slightly move the disc and measure the displacement around
disc edge.
4. If the measurement exceeds the allowable limit, replace
clutch disc.
Displacement around
disc edge
Depth to river top
Allowable limit
Allowable limit
2.0mm
0.079 in.
0.3 mm
0.012 in.
l--~ ~=---_I
r I Inside y "I Outside
Pressure plate should
be replaced
0302F103
C020F064
Pressure Plate Flatness
1. Place a straightedge on the pressure plate and measure
clearance with a feeler gauge at several points.
2. If the clearance exceeds allowable limit, replace pressure
plate.
3. When the pressure plate is worn around its outside and its
inside surface only is in contact with the straightedge,
replace it even ifthe clearance is within the allowable limit.
Clearance between
0.2 mm
pressure plate and Allowable limit
0.008 in.
straightedge
Checking Pressure Plate and Diaphragm
1. Check the pressure plate and if scratched on its surface,
correct with sandpaper or replace it.
2. Check the diaphragm for cracks and scratches. If defects are
found, replace it.
2-59