Weichai America Corp.
Revision: August 2019 17
Maintenance Intervals– Non-emergency
Preventative Maintenance Schedule – Non-Emergency
Event
Number
Maintenance Event Weekly
Interval
(Hours)
Interval
The first
50hours
500 1500 6 months
1 Check Engine Oil Level X X
2 Check Engine Coolant Level X X
3 Check Oil Pressure X X
4
Check Overall Operating Condition
(hose/clamp/pipe/belt/harness/connector)
X X
5 Change Oil and Oil Filter * (Sample)# X
6 Valve Lash (Inspect/Adjust)## X
7 Spark Plugs (Check/Adjust/Replace) X
8 Check Air Filter (Inspect/Replace) X
9 Replace Breather Filter X
10
Belts**, Pipes, Clamps and Hoses
(Inspect/Replace)
X X
11 Check Ignition System (Plug Wires/Coils) X
12 Check Coolant Condition * (Sample) X
13 Inspect Water Pump X
14 Test Batteries & Alternator X
15 Replace Coolant Every 2 Years
Table 2
Service may be required more frequently in dirty or extreme conditions; recommend
sampling fluids.
# Actual oil life and change interval is determined through engine oil sampling and analysis.
** It is recommended to replace Belt every 3 months.
## Valve lash inspection/ adjustment should be implemented at least once a month.
WARNING
Before servicing engine, ensure the engine has stopped and all high voltage disconnect
switches are in the open
CAUTION
Failure to follow these procedures could cause engine damage or decreased engine life.
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