Kesimpulan Overheating – Masalah Dan Penyebab

129 b. Tutup radiator rusak. c. Pressure relief valve pada sistem pendingin rusak. d. Leher tangki bagian atas radiator atau stud rusak. 4. Coolant Overflow a. Udara dalam sistem pendingin sebab pengisian sistem pendingin yang salah. b. Gas hasil pembakaran dalam sistem pendingin dari cylinder head yang kendor, cylinder head retak, pre-combustion chamber yang kendor atau rusak, gasket cylinder head rusak, cylinder liner counterbore aus. c. Uap panas dalam sistem pendingin disebabkan oleh engine torque converter overload atau level coolant rendah. d. Compressor udara yang rusak. 5. Aliran Coolant Kurang oleh karena Water Temperature Regulator Stuck a. Water temperature regulator tidak ada. b. Kecepatan high idle engine rendah. c. Impeller pompa air kendor. d. Radiator tersumbat pada bagian dalam. 6. Temperature Udara Masuk Tinggi atau Hambatan a. Temperature udara sekitar tinggi. b. Screen tersumbat pada blower fan ruangan engine. c. Pipa udara masuk tidak tersambung dengan ruang engine. d.Core after-cooler kotor. e. Penyaring udara tersumbat. f.Turbocharger rusak atau diselubungi karbon. 7. Perpindahan Panas Rendah a. Aliran air yang tidak cukup yang melewati heat exchanger. b. Kerusakan pada keel cooler. c.Udara panas ke radiator disebabkan oleh pendingin oli hydraulic overheating. d. Scale pada cylinder diding liner atau cylinder head. 8. Hambatan Exhaust 130 a. Penyaring udara tersumbat. b. Turbocharger rusak c.Hambatan pada pipa exhaust. d. Air dalam muffler. e. Baffle yang kendor dalam muffler. f.Pipa exhaust terlalu panjang atau terlalu banyak bengkokan. Berikut ini perawatan Interval pada Unit Excavator MAINTENANCE INTERVAL SCHEDULE When Required 1. Air ConditionerCab Heater Filter - Inspect 2. Replace 3. Boom Base Pins – Lubricate 4. Bucket Linkage - InspectAdjust 5. Bucket Tips - InspectReplace 6. Cab Air Filter - CleanReplace 7. Circuit Breakers – Reset 8. Electric Refueling Pump Strainer - Clean 9. Engine Air Filter Primary Element - Clean 10. Replace 11. Engine Air Filter Secondary Element - Replace 12. Engine Air Filter Service Indicator – Inspect 13. Fuses – Replace 14. Oil Filter – Inspect 15. Track Adjustment – Adjust 16. Windshield Washer Reservoir – Fill 17. Windshield Wipers - InspectReplace Every 10 Service Hours or Daily for First 100 Hours 131 1. Boom, Stick and Bucket Linkage - Lubricate 2. Dozer Blade Linkage - Lubricate 3. Every 10 Service Hours or Daily 4. Cooling System Level – Check 5. Engine Oil Level – Check 6. Fuel System Water Separator – Drain 7. Fuel Tank Water and Sediment – Drain 8. Hydraulic System Oil Level – Check 9. Indicators and Gauges –Test 10. Radiator Core – Clean 11. Seat Belt – Inspect 12. Track Adjustment – Inspect 13. Travel Alarm – Test 14. Undercarriage – Check 15. Walk-Around Inspection 16. Windows - Clean

1. Every 10 Service Hours or Daily for Machines Used in Severe Applications

1. Boom, Stick and Bucket Linkage - Lubricate

2. Every 50 Service Hours or Weekly

1. Boom, Stick and Bucket Linkage – Lubricate 2. Dozer Blade Linkage – Lubricate

3. Initial 100 Service Hours

1. Engine Oil and Filter - Change Fuel System Primary Filter - CleanInspectReplace Fuel System Priming Pump - Operate

4. Initial 250 Service Hours

Engine Valve Lash – Check Final Drive Oil – Change Hydraulic System Oil Filter – Replace 132 Swing Drive Oil - Change

5. Every 250 Service Hours or Monthly

1. Air Conditioner – Test 2. Air Conditioner Condenser – Clean 3. Belts - InspectAdjustReplace 4. Cooling System Coolant Additive DEAC – Add 5. Cooling System Hoses – Inspect 6. Engine Oil Sample – Obtain 7. Engine Oil and Filter – Change 8. Final Drive Oil Level – Check 9. Final Drive Oil Sample – Obtain 10. Hydraulic System Oil Sample – Obtain 11. Swing Bearing – Lubricate 12. Swing Drive Oil Level- Check

6. Every 500 Service Hours or 3 Months

1. Engine Crankcase Breather - Clean 2. Fuel System Primary Filter - CleanInspect 3. Replace 4. Fuel System Priming Pump - Operate 5. Fuel System Priming Pump Strainer - Clean 6. Fuel Tank Cap and Strainer - Clean 7. Hydraulic System Oil Filter - Replace

7. Every 1000 Service Hours or 6 Months

1. Battery - Recycle 2. Battery Electrolyte Level - Check 3. Battery, Battery Cable or Disconnect Switch -