MAINTENANCE
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20
FLUSHING THE HYDRAULIC SYSTEM
1. Shut the gate valve, located on the oil tank, close
the valve by turning the handle 90˚ clockwise to the
off position. Remove the suction line at the gate
valve and drain oil from tank using the gate valve
to regulate the flow.
2. Once all oil has drained out, remove the suction strainer
which is located in the tank, on the line that has the
gate valve.
With the strainer out, clean with a solvent by flowing
the solvent from the inside of the strainer out. After
cleaning, check that relief valve in the end of the strainer
is operational. It should push inwards with about three (3)
pounds of pressure.
3. To service the return filter, remove the four bolts on
top of the filter canister.
4. Remove the return filter and replace it with a new filter.
DO NOT REUSE THE OLD RETURN FILTER. Reinstall
return filter and suction strainer using appropriate
thread sealant and/or “O” rings. Check the “O” rings
for nicks or cuts before reinstalling. Also reinstall the
suction hose to the gate valve. OPEN GATE VALVE
(COUNTERCLOCKWISE) FULLY.
5. Remove the four bolts near the bottom of the filter
canister. Inspect inside the tank for contaminants.
6. Remove the 3/4” magnetic plug found on the bottom
side of the tank. Metal debris found in the oil will
attach to the plug. Clean the plug of debris.
Before starting the following procedures, make sure
that all hydraulic cylinders are completely retracted.
NOTICE
SUCTION STRAINER
MAGNETIC PLUG
