Broderson IC-80-3L 4X2, Installation And Operating Manual

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CARE OF HYDRAULIC OIL
The hydraulic system contains many highly pressurized, precision components. To
protect these, it is very important to keep the hydraulic oil clean, at proper temperature,
within the oil specification and to the proper fill level.
The IC-80 is equipped with a 100-mesh suction strainer, a breather filter, a 10-micron
return-line filter and a 25-gallon (95 L) tank. The filter must be changed whenever the
filter indicator gauge under the control panel points to the red sector at full engine speed
or at 500 hours or six months maximum. Note: The oil should be warmed by at least 15
minutes of normal operation to get a good reading. The indicator should be checked
daily.
The filter is located under the crane to the rear of the hydraulic tank. Clean the filter and
the surrounding parts with pressure washer before changing, to prevent dirt from getting
into the clean oil tube. To minimize oil loss, close the shutoff valves under the tank.
BE SURE SHUTOFF VALVES ARE FULLY OPENED BEFORE STARTING ENGINE.
Remove the filter element and catch the hydraulic oil in a clean container. Pour the
remaining oil out of the old element into the clean container and inspect the oil for water
and excessive contaminants. If water is found, the oil should be changed in the
reservoir and purged out of the cylinders. If excessive particles are found, the source
should be located and fixed, and the oil should be purged.
Lubricate the new element seal and install the new element. Open the shutoff valves.
Run the engine and check for any leaking around the seal.
The hydraulic oil should be changed every 1000 hours or once a year, whichever is
sooner. Wash the oil tank and filters before changing the oil. Retract the telescope,
boom, and outrigger cylinders. Leave the shutoff valves open and remove the drain
plug. Catch the oil and dispose of it properly. Remove the breather from the top of the
tank and clean the element with solvent and compressed air. Clean out the tank with
solvent and compressed air.
The suction strainer is threaded into the hydraulic tank suction port. To service, drain
the oil from the tank. Remove the suction hose from the strainer fitting. Remove the
suction strainer by turning the hex bushing counterclockwise. Wash the element in
clean solvent and allow to dry. Apply oil to the o-ring on the strainer and reassemble.
Replace the filter, as described previously, and refill the tank with new hydraulic oil that
meets the specifications in the table below. Open the shutoff valves. Start the engine
and run it at low idle for 10 minutes, then at high idle for 3 minutes to filter the new oil.
Then cycle all of the hydraulic cylinders at low idle and low pressure. Add hydraulic oil
to the dipstick full mark, if necessary, with cylinders retracted.
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