3-46 ENGINE
CLUTCH INSPECTION
CLUTCH DIAPHRAGM SPRING
Measure the free height of each diaphragm spring with a vernier
calipers. If each diaphragm spring height is not within the speci-
fied limit, replace it with a new one.
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" 09900-20102: Vernier calipers
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! Clutch spring free height
Service Limit: 2.9 mm
Measuring thickness
CLUTCH DRIVE AND DRIVEN PLATES
NOTE:
Wipe off the engine oil from the drive and driven plates with a
clean rag.
Measure the thickness of drive plates with a vernier calipers. If
each drive plate is not within the standard range, replace it with a
new one.
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" 09900-20102: Vernier calipers
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! Clutch drive plate thickness
Standard (No.1 and No.2 drive plates): 2.92 – 3.08 mm
Measure the claw width of drive plates with a vernier calipers.
Replace the drive plates found to have worn down to the limit.
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" 09900-20102: Vernier calipers
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! Clutch drive plate claw width
Service Limit (No.1 and No.2 drive plates): 13.0 mm
Measure each driven plate for distortion with a thickness gauge
and surface plate.
Replace driven plates which exceed the limit.
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" 09900-20803: Thickness gauge
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! Clutch driven plate distortion
Service Limit: 0.1 mm
Measuring distortion
Measuring claw wide
CLUTCH BEARING
Inspect the clutch release bearing for any abnormality, particu-
larly cracks, to decide whether it can be reused or should be re-
placed.
Smooth engagement and disengagement of the clutch depends
on the condition of the bearing.
Spring height
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