WP7 Euro
Ⅵ
Vehicle Diesel Engine User Service Guide
23
Warranty Explanations
1. Service commitment
In the service area of our service centers, after receiving the calls for help from the
users and confirmed that the service is needed, service personnel of Weichai will
arrive at the service site within 3h (cities), 24h (general areas) and 48h (remote areas)
(force majeure excluded).
2. Special notes
● The diesel engine operators must read the operation and maintenance manual
carefully to get familiar with the structure, strictly observe the technical operation
and maintenance regulations, and pay attention to the warning notes and signs.
● Before delivery, the diesel engine has been tested strictly according to the test
specifications, the test ECU data shall not be changed after delivery; otherwise,
Weichai will not undertake the liability for warranty.
● There are strict torque requirements and use times for all bolts of the diesel engine,
so do not loosen the main bearing bolts or the connecting rod bolts at will. Refer
to the operation and maintenance manual for the specific requirements.
● Carry out 50h test run before normal using of the new engine.
● After cold start of the diesel engine, increase the speed slowly; do not speed up
suddenly or idling for a long time.
● It is prohibited to run the diesel engine if no air filter is equipped, otherwise, the
unfiltered air may enter the cylinder. When the diesel engine works under severe
environment, increase the cleaning or replacement frequency of the filter element
to avoid early wear of the diesel engine.
● The fuel and oil should be filtered before filling. And the fuel and oil grade should
be selected according to the manual. Weichai Power special oil must be used.
3. “Three guarantees” principle and provisions
(1) “Three guarantees” principle
● For Weichai product or engine equipped with Weichai product purchased by the
users, under normal operation and maintenance conditions, Weichai will provide
“three-guarantee” service during the “three-guarantee” period for damages
caused by product manufacture and assembling.
● For damages of diesel engine and parts, repair will mainly be provided or
corresponding parts be replaced if repair is impossible; the diesel engine can be
replaced only if the replacement conditions are met and should be submitted for
