Common trouble and elimination
C-1
Engine common trouble and its elimination (suitable for diesel engine)
Diesel engine can not start
Possible causes
Remedies
1
）
Too low starting speed
1) Check the starting system and assure the starting speed is not
lower than 110rpm.
2) Air exists in the injection system
2) Check the looseness of the joints of the feed line. Unscrew
the de-aeration bolt on the fuel cleaner and oil water separator
assembly, then press fuel with hand priming pump until the fuel
overflows without air bubbles.
3) Fuel pipe clogged
3) Determine the location of the clog and clear it.
4) Fuel filter choked
4) Replace the screw-on filter element of the fuel filter/oil-water
separator assembly.
5) Fuel supply pump does not apply
fuel or applies fuel irregularly
5) Check for leakage in the fuel inlet pipe
Clogging of the fuel supply pump filters and fix or replace.
6) Insufficient fuel injection, without
fuel injection or low injection pressure
6) Check the injector atomization situations and replace a new
one if it doesn’t work.
7) Starting system problems:
7) Check the connection to be correct and reliable.
Incorrect terminals connection or bad
contact;
Insufficient battery charge;
Charge the battery.
Bad contact between the brush and
communicator of the starter
Repair or replace the brush and clean the surface of the
communicator with soft sand paper and blow off.
8) Insufficient compression pressure;
8) Replace the piston ring and press in the cylinder sleeve if
necessary.
Piston ring worn-out
9) The fuel cut off solenoid valve joint
is loose, dirty or corroded smudginess
canker
10) Mounting timing incorrect
9) Check the valve clearance, valve spring, valve stem, and
valve seat. Grind the valve seat if necessary.
Tighten and wash or replace.
10) Check and adjust it.
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...
