Common trouble and elimination
C-3
Abnormal noise during engine operation
Possible causes
Remedies
1) Connecting rod bearing bushing and
main bearing bushing are worn-out
and clash voice appears in the
crankcase.
1) Dismantle and check the bushing and, if necessary, replace it
and keep the reasonable clearance as required.
2)
The Damper is damaged and
invalid.
2) Change components to keep regulated axial clearance
3) The shock absorber is damaged and
ineffective
3) Check and see if the joint bolts are in good conditions, and
change new ones if necessary.
4) The valve knocks on the piston
4) Check and adjust the valve timing.
5) The driving gear is abrased and get
too large gap. There is knocking
sound at the timing gear box cover.
5) Check the gear side clearance and change the gear or not
according to the abrasion situations.
6) Too big clearance between piston and
cylinder and there is knocking sound
at the cylinder wall.
6) Change the piston and use the repairing cylinder liner. Keep the
proper clearance between piston and cylinder.
7) Puff vibration of supercharger
7) Remove the carbon and waste in the compressor channel and
the exhaust channel.
8) The bearing of supercharger is
damaged and the rotor knocks on the
shell
8) Change the supercharger assembly
9) The valve clearance is too large and
there is big noise at the cylinder head.
9) Adjust the valve clearance.
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...
