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6.37
CLUTCH SYSTEM
6
Problem, Cause and Remedy Chart
Table 6-2: Problem, Cause and Remedy
SITUATION POSSIBLE CAUSE REMEDY
Engine RPM below
specified operating range
although engine is
properly tuned.
-Wrong or broken drive clutch spring. -Replace with recommended spring.
-Drive clutch shift weight too heavy.
-Install correct shift weight kit to match engine
application.
-Driven clutch spring broken or installed wrong . -Replace spring; refer to proper installation location
Erratic engine operating
RPM during acceleration
or load variations.
-Drive clutch binding.
a. Disassemble drive clutch; inspect shift weights for
wear and free operation.
-Belt worn unevenly - thin/burnt spots Replace belt
-Driven clutch malfunction.
a. Replace ramp buttons.
b. Inspect movable sheave for excessive bushing
-Sheave face grooved. -Replace the clutch.
Engine RPM above
specified operating range.
-Incorrect drive clutch spring (too high spring
rate).
-Install correct recommended spring.
-Drive clutch shift weights incorrect for
application (too light)
-Install correct recommended shift weights.
-Drive clutch binding.
-Disassemble and clean clutch, inspecting shift
weights and rollers. Reassemble without the spring
-Driven clutch binding.
-Disassemble, clean, and inspect driven clutch, noting
worn sheave bushing and ramp buttons and helix
-Converter sheaves greasy; belt slippage.
-Clean sheaves with denatured alcohol or brake
cleaner, install new belt.
Harsh drive clutch
engagement.
-Drive belt worn too narrow. -Replace belt.
-Excessive belt/sheave clearance with new belt.
-Perform belt/sheave clearance adjustment with shim
washers beneath spider.
Drive belt turns over
-Wrong belt for application. -Replace with correct belt.
-Clutch alignment out of spec. -Adjust alignment offset.
-Engine mount broken or loose -Inspect/adjust or replace.
PVT cover overheating
(melting)
-Plugged air intake or outlet -Clear obstruction.
-Belt slippage due to water, oil, grease, etc.,
rubbing on cover
-Inspect system. Clean , repair or replace as necessary.
Seal PVT system ducts.
-Clutches or weight being applied to cover while
in operation
Remove weight. Inform operator.
-Use of High vs. low range
-Instruct operator on guidelines for operation in wet
terrain as outlined in Owner's Safety and Maintenance
Water Ingestion
-Cover seals or ducts leaking -Find leak and repair as necessary.
-Operator error
-Instruct operator on guidelines for operation in wet
terrain as outlined in Owner's Safety and Maintenance
Belt Slipping
-Belt worn out -Replace belt.
-Water ingestion -Inspect and seal PVT system.
-Belt contaminated with oil or grease -Inspect and clean.