Mechanical Diagnosis
153
Engine runs hot
Engine coolant is low
Add coolant slowly while engine is in
operation
Dirty or plugged radiator
Clean radiator
Cooling system heavily scaled
Clean cooling system
Water pump leaks
Repair or replace water pump
Worn or loose belt
Replace belt or adjust
Cylinder head gasket leaks (bubbles
appear in radiator if cylinder gasket
is leaking)
Replace cylinder head gasket.
Correct gasket
Faulty thermostat
Check or replace the thermostat
Oil pressure too low or drops
suddenly
Insufficient oil in pan
Refill oil base after correcting cause
of loss
Leak in oil line
Tighten oil line fittings
Oil relief valve sticking
Disassemble and clean oil pressure
regulator valve
Faulty oil pressure sensor
Check oil line to oil pressure sensor
to see if it is blocked. Check oil
pressure sensor. Replace if
necessary
Worn oil pump, camshaft, main or
connecting rod bearings, loose oil
gallery plug, oil in water through
crack
Repair engine
High oil consumption
Oil leakage
Check and eliminate possible
causes
Clogged air cleaner
Clean air cleaner
Damaged valve seals
Replace seals on valve stem
Worn valve stem or valve guides
Replace valves and valve guides
Broken piston rings or cylinder bore
worn or scored
Have engine repaired. Replace
broken piston rings
Crankcase breather clogged
Clean crankcase breather
Blue Smoke (oil consumption)
Excessive oil consumption
See “High oil consumption”. Repair
as necessary
White Smoke (fuel is not burning)
Cold engine
Allow engine to warm up
Low compression
Check and eliminate possible
causes. Repair as necessary
Incorrect timing
Readjust timing
Air or water in fuel
Bleed system. Replace filters, clean
fuel system, drain and clean tank
and check supply tank for water.
Use known good fuel
Insufficient preheat
Check glow plugs
Condition
Possible Cause
Remedy
Содержание UT-1200
Страница 10: ...Table of Contents 10...
Страница 20: ...Safety Precautions 20...
Страница 76: ...Operating Instructions for Premium HMI Control Panel 76...
Страница 88: ...Electrical Maintenance 88...
Страница 98: ...Engine Maintenance 98 Figure 167 Fuel Components...
Страница 142: ...Refrigeration Service Procedures 142...
Страница 148: ...Clutch Maintenance 148...
Страница 150: ...Structural Maintenance 150...
Страница 162: ...Wiring and Schematic Diagrams Index 162...
Страница 163: ...163 Schematic Diagram Page 1 of 2...
Страница 164: ...164 Schematic Diagram Page 2 of 2...
Страница 165: ...165 Wiring Diagram Page 1 of 5...
Страница 166: ...166 Wiring Diagram Page 2 of 5...
Страница 167: ...167 Wiring Diagram Page 3 of 5...
Страница 168: ...168 Wiring Diagram Page 4 of 5...
Страница 169: ...169 Wiring Diagram Page 5 of 5...