O&M Manual for PowerKit
M26 Series Diesel Engine
72
Insufficient engine power.
SN.
Causes
Troubleshooting
1
Intake system (air filter) is clogged.
Check the air filter and intake pipe.
Clean or replace the filter element.
2
Exhaust back pressure is too high.
Check and adjust the valve timing.
Check the exhaust pipe for clogging.
3
Insufficient pressure in supercharging sys-
tem.
Check and troubleshoot the leakage
in the connecting pipe.
4
Turbocharger malfunction.
Replace the assembly.
4.1 Compressor, turbine flow passage clogged.
Wash or replace.
4.2 Floating bearing failure.
Replace.
4.3
There is carbon or sludge deposit at the
back of turbine and compressor.
Clean.
5
Intercooler damaged.
Replace or repair.
6
Fuel pipe leaks or is clogged.
Check the fuel pipe and its joint for
leakage. Check the fuel filter for con-
tamination. Tighten and clean the
fuel pipe. Replace the fuel filter ele-
ment.
7
Poor fuel quality.
Clean the fuel tank, fuel filter and fuel
pipe. Replace fuel.
8
Instable atomization of fuel injector.
Check fuel injection pressure.
Check the injector for soot deposi-
tion. Adjust and repair the injector.
9
Incorrect valve timing or fuel supply timing.
Check and adjust.
10
Engine oil level in oil pan is too high.
Referring to the oil dipstick markings,
discharge excess oil.
11
Cylinder gasket leaks.
Check the compression pressure in
the cylinder while the diesel engine is
hot. Replace the damaged cylinder
gasket.
12
Piston ring is worn or broken. Bearing shell
gap is too large.
Replace the worn parts or overhaul
the diesel engine.
13
Cylinder liner or piston is worn or piston
scraping.
Repair or replace.
Summary of Contents for 12M26 Series
Page 1: ...1 1003195965 ...
Page 2: ...2 Operation and Maintenance Manual for PowerKit M26 Series Diesel Engine GDMB26V1901 ...
Page 31: ...O M Manual for PowerKit M26 Series Diesel Engine 31 12M26MP Figure 3 2B 12M26 Mounting ...
Page 78: ...O M Manual for PowerKit M26 Series Diesel Engine 78 6 6 Engine Maintenance Log ...
Page 79: ...O M Manual for PowerKit M26 Series Diesel Engine 79 ...