10-6 SERVICING INFORMATION
Complaint
Symptom and possible causes
Remedy
Noisy engine
Excessive valve chatter
1. Too large valve clearance
2. Weakened or broken valve springs
3. Worn rocker arm and rocker arm shaft
4. Worn and burnt camshaft journal
Noise seems to come from piston
1. Worn down piston or cylinder
2. Carbon combustion chamber fouled with carbon
3. Worn piston pins or piston pin bore
4. Worn piston rings or ring grooves
Noise seems to come from cam chain
1. Stretched chain
2. Worn sprockets
3. Tension adjuster not working
Noise seems to come from crankshaft
1. Rattling bearings due to wear
2. Worn and burnt big-end bearings
3. Worn and burnt journal bearings
4. Too large thrust clearance
Noise seems to come from water pump
1. Too much play on pump shaft bearing
2. Worn or damaged impeller shaft
3. Worn or damaged mechanical seal
4. Contact between pump case and impeller
Noise seem to came from the movable drive and
driven face
1. Worn or slipping drive belt
2. Worn rollers in movable drive face
Noise seem to came from the transfer
1. Worn or rubbing gear
2. Worn transfer input/output shaft
3. Worn bearing
4. Worn splines
Noise seems to came from front/rear output shaft
bevel gear, front drive (differential) bevel gear and
rear drive bevel gear
1. Worn or damage drive and driven bevel gears
2. Excessive backlash
3. Improper tooth contact
4. Damage bearing
5. Worn or rubbing gears
6. Worn output shaft spline
7. Too large front drive gear thrust clearance
8. Too large rear drive gear thrust clearance
Adjust.
Replace.
Replace.
Replace.
Replace.
Clean.
Replace.
Replace.
Replace.
Replace.
Repair or replace.
Replace.
Replace.
Replace.
Replace crankshaft or con-
rod.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace shaft.
Replace.
Replace.
Replace.
Adjust.
Adjust.
Replace.
Replace.
Replace output shaft.
Adjust or replace.
Adjust or replace.
Summary of Contents for LT-A450X
Page 2: ...SUPPLEMENTS LT A450XK9 09 MODEL LT A450XK8 12 13 WIRING DIAGRAM 14 ...
Page 47: ...PERIODIC MAINTENANCE 2 29 ...
Page 48: ...2 30 PERIODIC MAINTENANCE ...
Page 63: ...ENGINE 3 7 Remove the engine mounting nuts Remove the engine from the right side ...
Page 215: ......
Page 315: ...7 24 COOLING AND LUBRICATION SYSTEM ENGINE LUBRICATION SYSTEM To cylinder head OIL PUMP ...
Page 316: ...COOLING AND LUBRICATION SYSTEM 7 25 EXHAUST SIDE INTAKE SIDE ...
Page 317: ......
Page 332: ...8 14 CHASSIS REAR CARRIER Remove the rear carrier REAR BOX Remove the rear box 1 ...
Page 417: ......
Page 452: ...9 34 ELECTRICAL SYSTEM HEADLIGHT INSTALLATION Head light coupler Head light R Adjusting point ...
Page 484: ...10 26 SERVICING INFORMATION Rear box Rear fender Right mud guard Left mud guard ...
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