Common trouble and elimination
C-5
Too low oil pressure
Possible causes
Remedies
1) Diluted or incorrectly selected
1) Select the proper oil.
2) Inner and outer rotors of oil pump worn-out
or too large
2) Replace the oil pump.
3) Oil filter choked
3) Replace the whirling type filter element.
4) Failure of oil filter pressure control
4) Repair it.
5) Gear of oil pump damage
5) Replace it.
6) Inlet oil tube of fuel pump crack
6) Repair or replace it.
7) Fixing bolt of oil pump inlet oil tube loose
7) Tighten the bolt to the required torque.
8) Too large bearing bushings clearance.
8) Check and replace it.
Too high oil pressure
Possible causes
Remedies
1) Too low ambient temperature and too
high oil viscosity
1) Use the required grade engine oil. Operate at low speed
after starting, and then check it when the oil temperature is
normal.
2) Over-flow valve clogged
2) Check and clean it
Too high oil temperature and oil consumption
Possible causes
Remedies
1) Leakage in the exterior oil line
1) Check and repair it.
2) Too high diesel engine load
2) Decrease the load.
3) Use improper oil
3) Use the oil as required.
4) Piston ring stuck or seriously worn
4) Check and repair, if necessary, replace it.
5) Too much worn out of Cylinder bore
5)
Bore the cylinder and use the oversized piston rings or
press in a repair –used cylinder sleeve.
6) Valve guide seriously worn out and failed
seal of valve stem
6) Check and replace.
Summary of Contents for XMQ6127 series
Page 18: ...Operation Instruction CI 1 Figure 17 Set MotPPR Figure 18 Clear Trip A Figure 19 Clear Trip B...
Page 32: ...Operation Instruction P A 1 2 Control panel operation...
Page 33: ...Operation Instruction P A 1...
Page 34: ...Operation Instruction P A 1...
Page 35: ...Operation Instruction P A 1...
Page 36: ...Operation Instruction P A 1...
Page 41: ...Operation Instruction 0 G 1 1 1 2 2 Pushbutton Settings...
Page 42: ...Operation Instruction 0 G 1 1 2 Starting the Engine 1 3 Selecting the Gear...
Page 43: ...Operation Instruction 0 G 1 1 4 Setting Off 1 5 Driving Ranges...
Page 44: ...Operation Instruction 0 G 1 1 5 1 Downhill Travel 1 5 2 Downhill Travel 1 5 3 Kickdown...
Page 46: ...Operation Instruction 0 G 1 1 6 Stopping Parking...
Page 51: ...Operation Instruction 0 G 1 1 11 1 Limp Home Mode 1 12 Auxiliary Control Unit...
Page 52: ...Operation Instruction 0 G 1 1 12 1 Operating Instructions for the Auxiliary Control Unit...
Page 53: ...Operation Instruction 0 AB 1 WABCO ABS BASIC INTRODUCTION...
Page 54: ...Operation Instruction 0 AB 1...
Page 55: ...Operation Instruction 0 AB 1...
Page 56: ...Operation Instruction 0 AB 1...
Page 57: ...Operation Instruction 0 AB 1...
Page 58: ...Operation Instruction 0 EC 1 ECAS System Introduction 1 System introduction...
Page 59: ...Operation Instruction 0 EC 1 3 System function...
Page 60: ...Operation Instruction 0 EC 1...
Page 77: ...Operation Instruction 0 E 1 CAN bus module...
Page 158: ...Appendix A 4 Air braking schematic diagram...
Page 159: ...A 5 Electric schematic diagram of the complete vehicle 1...
Page 160: ...A 6 Electric schematic diagram of the complete vehicle 2...
Page 161: ...A 7 Electric schematic diagram of the complete vehicle 3...
Page 162: ...A 8 Electric schematic diagram of the complete vehicle 4...
