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7.
Open tank by removing (6) hex bolts and flat
washers that secure lid (see Figure 88).
8.
Clean tank and tank screen (see Figure 88)
with mineral spirits. Wipe out as much resid-
ual fluid and contaminants from tank as pos-
sible. Allow tank and tank screen to air dry.
Tank
Screen
Figure 88. Example of hydraulic fluid tank lid
removed.
9.
Install tank lid and screen.
10. Clean and wrap drain plug threads with Teflon
tape, install drain plug, then fill tank with 30
quarts of ISO 32 or equivalent hydraulic fluid.
11. Install fill cap, slide hydraulic power unit back
into base, and install hydraulic power unit
access panel.
-56-
The coolant system consists of a reservoir, pump,
and hoses with valves. The pump pulls coolant
from the reservoir and sends it to the valves,
which control the flow of coolant. As the cool-
ant leaves the work area, it drains through the
machine base, where the swarf and metal chips
Tank
are screened out, and back into the reservoir.
Lid
Although most swarf from machining operations is
screened out of the coolant before it returns to the
tank, small particles will accumulate in the bottom
of the reservoir in the form of sludge. To prevent
this sludge from being pulled into the pump and
damaging it, the pump's intake is positioned
above the bottom of the tank. This works well
when the tank is regularly cleaned; however, if
excess sludge is allowed to accumulate, the pump
will inevitably begin sucking it up.
Hazards
As coolant ages and gets used, dangerous
microbes can proliferate and create a biological
hazard. The risk of exposure to this hazard can
be greatly reduced by replacing the old coolant on
a monthly basis, or as indicated by the manufac-
turer of the cutting fluid.
When working with the coolant, minimize expo-
sure to your skin, eyes, and lungs by wearing
the proper PPE (Personal Protective Equipment),
such as long-sleeve waterproof gloves, protective
clothing, splash-resistant safety goggles, and a
NIOSH-approved respirator.
Coolant System
Maintenance
Model G0887 (Mfd. Since 01/19)
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