Service Manual for WP6 Diesel Engine
Special Tips
Operators must carefully read Diesel Engine Instruction Manual, all technical operations and
maintenance regulations specified in the manual must be strictly complied with, and also pay
attention to warning instructions and labels;
Each diesel engine has passed strict and specified pre-delivery test, accelerator throttle has been
lead sealed, do not casually remove the lead seal to increase throttle;
Turbocharger rotor is high-speed rotating component, it is strictly prohibited to approach the
intake port of turbocharger with any removable object (such as hand, tools, gauze, etc.) when
the engine is running, in order to avoid human body damage or machine damage; For rotor
module, it can only be disassembled by qualified maintenance personnel in professional
maintenance site authorized by Weichai Power;
Various bolts like diesel engine main bearing bolts and connecting rod bolts have strict torque
requirements and limiting use times, users are not allowed to loosen or remove the bolts
casually; connecting rod bolts are disposable bolts, do not reuse them;
The added engine oil or diesel oil, whose brand must complied with requirements specified in
operation and maintenance manual, moreover, all oil must be filtered with specialized clean
filter, fuel must be subsided for more than 72 hours; Before operating the machine each time,
check and make sure coolant level and engine oil level meet the requirements;
Test run a new machine for 50 hours (run-in period) before putting it into operation, replace
engine oil and engine oil filter element after run-in period;
Increase the engine rotating speed slowly after cold starting, neither increase the speed abruptly
or long-term idling is proper; After heavy load running, do not stop the engine immediately
(peculiar circumstance exception), you should run it at low speed for 5~10 minutes before
shutting down;
After parking, if the ambient temperature is likely to be lower than 0
o
C and there is unused
coolant in the machine, please be sure to drain the coolant in water tank and diesel engine out;
It is forbidden to run the diesel engine without an air filter to prevent unfiltered air entering into
cylinders. Air filter should be enlarged or replaced more frequently when operating in severe
conditions, in order to prevent engine failure, such as premature wear;
Overhaul of electrical components must be carried out by electrical professionals.
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General