TROUBLESHOOTING 8-3
WHEN OUTPUT IS INSUFFICIENT
- Clean orifice and needle valve, being very careful not to damage the
nozzle orifice.
- Check nozzle. If defective, replace with new parts.
- Band valve and excessive wear of rings, pistons and liners cause insufficient
compression. Replace with new parts.
- Grind valves.
- Check lube oil system.
- Check to see if lube oil filter is working properly.
- Filter screens or elements deposited with impurities would cause poor
lubrication clean screens.
- Check to see if bearing clearance are within factory specs.
- Check engine timing.
- Adjusting timing DK451: 18° (0.3 rad), DK501/551: 12° (0.21 rad)
before top dead center.
- Adjust to proper valve clearance.
inlet N/A: 0.25 mm (0.0098 in.), Turbo: 0.2 mm (0.0079 in.)
exhaust N/A: 0.3 mm (0.0118 in.), Turbo: 0.2 mm (0.0079 in.)
- Clean the element every 100 ~ 200 hours of operation.
- Adjust to proper pressure of 150 kgf/cm² (2133.5 psi, 14.7MPa).
- Do not use poor quality fuel for it will cause wear of the pump. Only use No. 2
diesel fuel.
- Check the fuel injection pump element and delivery valve assembly and
replace as necessary.
Carbon stuck around orifice of nozzle piece
Compression is insufficient leaking valves
Overheating of moving parts
Valve out of adjustment
Air cleaner is dirty
Fuel injection pressure is wrong
Injection pump wear
Cause
Countermeasures
IF YOU HAVE ANY QUESTIONS,CONTACT YOUR LOCAL KIOTI DEALER
Summary of Contents for DK451
Page 4: ......
Page 8: ......
Page 22: ...1 14 DK451 501 551 TRACTOR SAFETY LABELS A12O131A DK451 ...
Page 23: ...SAFETY PRECAUTIONS 1 15 DK451C A12O132A ...
Page 24: ...1 16 DK451 501 551 DK501 DK551 A12O133A ...
Page 25: ...SAFETY PRECAUTIONS 1 17 DK501C DK551C A12O132A ...
Page 28: ...1 20 DK451 501 551 12 T2615 54112 15 T4817 52201 16 T2615 53561 ...
Page 29: ...2SERVICING OF TRACTOR SERVICING ...
Page 31: ...3SPECIFICATIONS SPECIFICATIONS TRAVELING SPEED ...
Page 70: ...4 34 DK451 501 551 ...
Page 96: ...5 26 DK451 501 551 A12O533A DK451 DK501 DK551 ...
Page 98: ...5 28 DK451 501 551 ...
Page 130: ...6 32 DK451 501 551 ...
Page 131: ...7STORAGE STORAGE REMOVING THE TRACTOR FROM STORAGE ...
Page 134: ...7 4 DK451 501 551 ...
Page 135: ...8TROUBLESHOOTING ENGINE TROUBLESHOOTING TRACTOR TROUBLESHOOTING BATTERY TROUBLESHOOTING ...
Page 142: ...8 8 DK451 501 551 ...
Page 143: ...INDEX 9INDEX ...
Page 150: ...9 8 DK451 501 551 ...