3. Service and Repair
3-5
3.7 HYDRAULICS
Hydraulic Pump
Remove the capscrews that mount the pump to the engine. Remove the pump from the engine and apply high
pressure molybdenum grease to the splines. Re-install the pump and secure with the capscrews.
Hydraulic Oil Tank & Filter
Fluid Level
With the platform fully lowered, the oil should be visible in the sight gauge. If the oil is NOT visible, fill the tank
until the oil can be seen. DO NOT fill above the sight gauge or when the platform is elevated.
Oil & Filter Replacement
1. Operate the work platform for five minutes to warm up the oil. To change filter only, go to step 5.
Figure 3-3: Hydraulic Oil Tank & Filter
Setting Hydraulic Pressures
Referring to Figure 0-1 along with the other Figures will aid in the following procedures.
Note: Check the hydraulic pressures whenever the pump, manifold, or relief valve(s) have been
serviced or replaced.
!
CAUTION
!
The hydraulic oil may be hot enough to cause
burns. Wear safety gloves and safety glasses
when handling hot oil.
!
WARNING
!
The hydraulic oil may be of sufficient temperature
to cause burns. Wear safety gloves and safety
glasses when handling hot oil.
The oil in the hydraulic system is under very high
pressure which can easily cause severe cuts.
Obtain medical assistance immediately if cut by
hydraulic oil.
1. Filler Breather
2. Drain Plug (under tank)
2. Provide a suitable container to catch the drained oil.
The hydraulic tank has an oil capacity of 74 L.
3. Remove the drain plug and allow all oil to drain into
the container, be sure to dispose of oil properly.
4. Reinstall the drain plug.
5. Unscrew the filter top from the filter body.
6. Lift the filter element from the filter body.
7. Remove filter cup and clean cavity, reinstall cup.
8. Insert the replacement filter into the filter body and
press into position.
9. Fill the hydraulic oil tank to the level of the Sight
Gauge with ISO #32 (see Table 1-1) hydraulic oil by
pouring the oil into the filler breather cap. Since the
oil is being strained as it is going into the tank, it may
take a while to fill the tank.
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