Buell 2009 XB Series Service Manual page 53

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CONDITION ROOT CAUSE
Excessive edge wear Misalignment or bent drive structure
(mistracking)
Bent or rough flange
Damage due to handling (pry on, etc.)
Debris damage to edge of belt
Belt hitting obstruction
Bent or loose idler bracket
Broken or loose guards
Excessive tooth wear Rough or damaged sprocket
Worn sprocket
Debris in sprocket
Abrasive environment
Apparent belt stretch Worn sprocket
NOTE:
Debris in sprocket
Tension on a new belt will
loosen after approximately
1000 mi (1600 km).
Idler bearing failure
Aggressive riding/hard use
Exposure to oils, solvents, harsh chem-
icals
Cracks in back of belt Idler/bearing binding
Exposure to oils, solvents, harsh chem-
icals
Cut by sharp debris (not at belt edge)
Cut by sharp debris at belt edge
Tooth shear/cracks Excessive load/shock load
Worn sprocket
Debris damage
Table 1-10. Potential Limits to Belt Drive Service Life
REQUIRED ACTION
Check structure (bad bearing, bent members, etc.)
Repair flange/replace sprocket
Follow proper handling/installation procedure
Inspect/replace belt
Inspect for damaged or missing guards
Check structure (bad bearing, bent members, etc.)
Inspect for loose/missing fasteners
Inspect for damaged or missing guards
Replace idler assembly
Inspect for loose/missing fasteners
Check structure (bad bearing, bent members, etc.)
Inspect for loose/missing fasteners
Inspect for damaged or missing guards
Inspect/replace sprocket
Inspect/replace sprocket
Clean and protect drive
Inspect for damaged or missing guards
Eliminate or control exposure
Inspect for damaged or missing guards
Inspect/replace sprocket
Clean and protect drive
Inspect for damaged or missing guards
Replace idler assembly
Riding practice/operator choice
Eliminate or control exposure
Clean and protect drive
Replace idler assembly
Eliminate or control exposure
Clean and protect drive
Inspect/replace sprocket
Continue to run but monitor condition frequently
Inspect/replace sprocket
Inspect/replace belt
Inspect/replace belt
Riding practice/operator choice
Inspect/replace sprocket
Inspect/replace sprocket
Clean and protect drive
Inspect/replace belt
Continue to run but monitor condition frequently
Inspect for damaged or missing guards
2009 XB Service: Maintenance 1-31