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 XMQ6129Y series
Page 47: ...Technical parameter and complete vehicle description 0 T 1 TPMS OPERATION...
Page 48: ...Technical parameter and complete vehicle description 0 T 1...
Page 49: ...Technical parameter and complete vehicle description 0 T 1...
Page 50: ...Technical parameter and complete vehicle description 0 T 1...
Page 51: ...Technical parameter and complete vehicle description 0 T 1...
Page 52: ...Technical parameter and complete vehicle description 0 T 1...
Page 53: ...Technical parameter and complete vehicle description 0 T 1...
Page 54: ...Technical parameter and complete vehicle description 0 T 1...
Page 55: ...Technical parameter and complete vehicle description 0 T 1...
Page 56: ...Technical parameter and complete vehicle description 0 T 1...
Page 57: ...Technical parameter and complete vehicle description 0 T 1...
Page 63: ...Technical parameter and complete vehicle description 0 K 1 Lock1 Lock 2 Lock 3...
Page 157: ...Appendix A 4 Air braking schematic diagram...
Page 158: ...Appendix A 4 Electric schematic diagram of the complete vehicle 1...
Page 159: ...Appendix A 5 Electric schematic diagram of the complete vehicle 2...
Page 160: ...Appendix A 5 Electric schematic diagram of the complete vehicle 3...
Page 161: ...Appendix A 5 Electric schematic diagram of the complete vehicle 4...