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13
9. Gear box: check oil once a year.
10. Change coolant on a frequency appropriate to
the type of coolant being used. Oil based
coolants can sour. Refer to coolant supplier’s
instructions for change frequency.
11. Coolant tank: Clean every 6 months or as
required.
12. Hydraulic oil reservoir: Check oil level
periodically by checking the oil level indicator on
side of reservoir. If level is low, service reservoir
(refer to Servicing Hydraulic Oil).
11.3 Servicing hydraulic oil
Shut off all electrical power to
the machine.
1. Remove hydraulic oil reservoir access panel.
2. Check oil level (refer to Figure 16). If level is
below the yellow (upper) line, the reservoir
should be filled.
3. Disconnect electrical power.
4. Remove reservoir fill cap.
5. Add oil until the level is at the yellow (upper)
line. Install reservoir fill cap.
6. If a significant amount of oil needed to be
added, check for oil leaks in pump components,
lines, and hydraulic cylinder. Correct source of
leakage before operating the cut off saw.
7. Connect electrical power. Raise and lower the
saw head to confirm that the saw is operating
correctly.
Figure 16
11.4 Changing blades
Shut off all electrical power to
machine.
1. Loosen four knobs securing blade cover. Lift
cover and swing it backward.
2. Remove blade guard mounted to left blade
guide support.
Always wear leather gloves
when handling saw blade to avoid injury
from saw teeth.
3. Turn blade tensioning handwheel clockwise to
relieve tension on blade. Loosen blade enough
to remove blade from idler and drive wheels.
Remove blade from between blade guides.
4. Install new blade between blade guide bearings
and carbide blade guides. Install blade over the
drive and idler wheels.
5. Turn blade tensioning handwheel counter-
clockwise to tighten blade. Tighten blade until
blade tension indicator reads desired setting.
6. Operate the saw at low speed and observe the
tracking of blade. If tracking needs to be
adjusted, refer to sect. 9.1.
7. Adjust the bearings on upper edge of blade until
they just contact blade (see Figure 19).
8. Check the guide bearings and the carbide
guides to make sure they are just contacting the
sides of blade.
9. Install left blade guard making sure there is
ample clearance with blade.
10. Make a test cut to verify that blade tracks
properly during operation. Adjust tracking as
required (see sect. 9.1).
11.5 Changing drive belt
1. Disconnect electrical power from the saw to
prevent any possibility of accidental motor start-
up.
2. Set the saw head at full horizontal position.
3. Remove knob on drive belt cover. Remove
drive belt cover to expose V-belt and pulleys.
4. Remove two screws, nuts, and washers from
back of saw head support. Push on motor
support bracket to pivot motor upward to loosen
the tension on belt.
5. Remove the worn belt.
6. Put the replacement belt in the pulleys. Allow
motor to pivot downward.
7. Install the two screws, nuts, and washers in
back of saw head support and through the
motor support bracket.
8. Install drive belt cover. Install and tighten knob
on drive belt cover.
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