Issued June 2020
Maintenance
Copyright 2020, Heil Environmental
Printed in U.S.A.
148
DRAIN AND CLEAN THE HYDRAULIC OIL
TANK
Change the hydraulic oil at least annually or every 2000
hours of operating time, whichever comes first.
Remember that almost all hydraulic system malfunctions
can be traced to dirt in the fluid. When working with the
hydraulic system, the hands, tools, working area and parts
must be as clean as possible.
CAUTION
Wear proper eye protection when you are working on or
around hydraulic lines or components. Wear proper eye
protection and avoid contact with hydraulic oil if possible.
Never check for oil leaks with your hands.
To drain and clean the hydraulic oil tank, follow these
steps:
1. Disengage the pump, shut off the engine and remove
the ignition key.
WARNING
Make sure the unit is in the Lock-Out/Tag-Out mode
when you do maintenance or service procedures, or when
you go in the hopper, climb in or on the body or on
equipment. Equipment can be operated when the unit is
not in the Lock-Out/Tag-Out mode. When the unit is not in
the Lock-Out/Tag-Out mode, equipment operated while
you do maintenance or service procedures, go in the
hopper or climb in or on the body or on equipment can
cause serious injury or death.
If your employer or company has Lock-Out/Tag-Out
procedures that are different from the following
procedures, use your employer’s or company’s
procedures. If your employer or company does not have
Lock-Out/Tag-Out procedures, use the procedures that
follow.
2. Contact your supervisor if you have any questions
about Lock-Out/Tag-Out procedures. If your
supervisor has any questions, that person can
contact ESG Technical Service. Perform the Lock
Out/Tag Out Procedure .
3. Remove the fill cap from the top of the tank.
4. Remove the drain plug from the bottom of the tank
so that the oil drains into a container.
5. While fluid is draining from the tank, remove and
replace the filter/breather assembly. Change the
assembly every time the in-tank filter is replaced.
6. To drain the entire hydraulic system, disconnect all
hoses at the adapter and drain the hoses into a
container.
7. Remove and replace the in-tank filter as described in
Change the Hydraulic Oil Filter Element .
8. Remove the outlet flange and 100 mesh suction
strainer to gain access to the tank inside.
9. Remove sediment from the tank bottom.
10.Install the outlet flange with a new gasket and the
100 mesh suction strainer into the tank.
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