Model 30000-S DHPU Manual
Rev. 0
JRK
17SEP12
Page 26
Maintenance
It is important to maintain the power unit in a condition that will provide continued safe
operation. The following sections highlight items that need to be addressed over the life of
the unit.
Before Each Job
1.
Fill up the diesel fuel tank. If the engine has been run until the tank is empty, then
bleed the air out of the fuel system.
2.
Inspect the unit visually and look for signs of damage or leaks. Check all components
(hydraulic and mechanical). Ensure all hydraulic hoses, including the interconnects,
are free of damage.
3.
Check the fluid level of the hydraulic reservoir.
4.
Clean the engine air intake pre-cleaner.
5.
Inspect the engine air intake oil bath air cleaner. Clean if required. Frequency of
cleaning is dictated by the amount of the dust in the air when operating.
6.
Check the engine motor oil level.
7.
Clean the heat exchanger fins.
8.
Set the system relief pressure to the required level for the job.
9.
Verify the manual air intake shutdown safety feature functions properly.
10.
Drain water accumulation from the bottom of the reservoir (after settled).
Each 500 Hour Interval
1.
Inspect the fan belt for damage. Replace if worn.
2.
Replace the hydraulic return filter elements.
3.
Change the engine motor oil and replace the oil filter.
Each 1000 Hour Interval
1.
Replace the hydraulic oil in the reservoir. When the tank is empty, clean the interior
with a lint free cloth to remove any debris deposited in the bottom. Also, clean or
replace the suction strainers if contaminated.
2.
Clean the fuel strainer on the engine.
3.
Replace the fuel filter on the engine.
4.
Check the valve clearance on the engine; adjust if necessary.
Each 1 Month Interval
1.
Clean the spark arrestor on the engine.
Each 3 Month Interval
1.
Verify the function of the automatic over speed shutdown. It may be necessary to
adjust the maximum speed set screw to allow the engine to increase its speed. All
settings must be returned to the correct position after the test.
2.
Ensure the fan belt trip lever functions properly. Do not put hands into the fan belt
area while the engine is running.
Hoses
Replace the hoses within appropriate intervals regardless of the condition. Every five years
is the usual hose manufacturer time frame.
