Operation and Maintenance Manual
Operating faults
Errors – Cause – Remedy
Malfunction / error
Cause
Remedy
Low output of the Diesel engine
(reduced performance).
There is a fault in the fuel system
(blockage, leak).
Carry out a visual inspection for
leaks, replace the filter. Contact your
nearest authorized Kohler service
representative. See "Service
Assistance" section.
The charge pressure is too low.
The terminals are loose, the seals
and hoses are faulty, the air filter is
dirty, the turbocharger is faulty.
Contact your nearest authorized
Kohler service representative. See
"Service Assistance" section.
The charge air temperature is too
high.
The charge air cooler is dirty, the
fan’s performance is low, the
ambient temperature is too high.,
Contact your nearest authorized
Kohler service representative. See
"Service Assistance" section.
The coolant temperature is too high. Check the cooler for soiling, check
the fan and thermostat, check the
coolant level. Contact your nearest
authorized Kohler service
representative. See "Service
Assistance" section.
The fuel temperature is too high.
Contact your nearest authorized
Kohler service representative. See
"Service Assistance" section.
The injection nozzles are faulty or do
not vaporize.
Contact your nearest authorized
Kohler service representative. See
"Service Assistance" section.
The Diesel engine’s compression is
too low.
Contact your nearest authorized
Kohler service representative. See
"Service Assistance" section.
There is a fault in the electronic
system.
Read out the error logs of the engine
control unit. Contact your nearest
authorized Kohler service
representative. See "Service
Assistance" section.
The Diesel engine is too hot
(according to the coolant
temperature display).
The coolant level is too low.
Fill up with coolant.
The cooler is dirty or calcified.
Clean or descale. Contact your
nearest authorized Kohler service
representative. See "Service
Assistance" section.
The thermostat is faulty.
Check this and replace if necessary.
Contact your nearest authorized
Kohler service representative. See
"Service Assistance" section.
KD27V12 33521029401_3_1 en 2017-07-01
© 2017 by Kohler Co. All rights reserved.
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