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PERIODIC MAINTENANCE
For maximum performance and reliability of the tool, peri-
odically check the following components.
THRUST COLLAR AND INSIDE/OUTSIDE
COLLAR INSPECTION
Periodically inspect the thrust collar for damage when you
remove the cut-off wheel (refer to Cutoff Wheel Replace-
ment).
1. Remove the key and thrust collar from the motor shaft.
2. Check the thrust collar for burrs. Remove burrs as re-
quired.
3. Check the threads on the clamping setscrew.
4. Inspect the collar bores and flanges.
5. Check for burrs. Remove burrs as required.
6. Check that the bearing surfaces are flat and run true
when mounted on the motor shaft and thrust collar.
DRIVE-SHAFT SPEED CHECK
Check the speed of the motor output shaft at least every
100 hours of operation. The test should be performed only
by a trained, experienced technician.
• Maintain a record of the speed checks.
• The maximum rated speed of the CO25 Hydraulic Cutoff
Saw is 4500 rpm.
• The rated speed of the cutting wheel must be equal to,
or greater than that of the tool to ensure the integrity of the
wheel at maximum tool speed.
• Use the hydraulic power supply normally used with the
cutoff saw when conducting this test.
• Excessive speed may be caused by excessive hydraulic
fluid flow to the tool.
BEARING CHECK
Periodically inspect the bearings and associated parts for
proper operation. A worn or damaged bearing can cause
motor damage.
OPERATION
CARE AND STORAGE
Remove the cutoff wheel from the tool after use. Do not
store or transport the saw with the wheel installed. Clean
and inspect the wheel and tool before storing.
CUTOFF WHEELS
All abrasive cutoff wheels are breakable. Exercise care in
handling and storage to prevent damage.
1. Clean used wheels to remove any dirt, debris, or grease.
Dry thoroughly.
2. Inspect the wheel for chips, cracks, or other damage. For
maximum tool performance, replace the wheel if it is worn
or defective.
3. Store cutoff wheels on a flat surface of steel or similar
rigid material.
4. If wheels are supplied with blotters attached, insert suit-
able separators between each wheel and the supporting
surface to preserve flatness.
5. Do not store wheels where they will be exposed to high
humidity, water or other liquids, excessive heat, or freezing
temperatures.
6. Avoid temperatures low enough to cause condensation
on the wheels if they are moved from storage to an area of
higher temperature.
7. Wheels carried on emergency vehicles should be re-
moved after use, and discarded or stored carefully (steps 1
and 2).
TOOL
1. Clean the tool to remove any dirt, debris, or grease. Dry
with compressed air or clean dry cloths.
2. Replace any damaged or missing safety labels and tags
before storing the tool. Otherwise, the tool might be improp-
erly used by someone who is not familiar with the safety
requirements.
3. Store the tool in a clean, dry place.
CO25 User Manual ◄ 13
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