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2) Direct injection of oil into the tool
A simple and easy way to ensure proper lubrication is to inject the oil directly into the tool air inlet. This should
be performed prior to storage of the tool. To perform this task one must have a small container of the proper
lubricating oil.
● Disconnect the tool from the air supply at the air coupling.
● Place a few drops of oil from the container into the air inlet of the tool directly.
● Reconnect the tool to the air supply.
● Direct the exhaust of the tool away from any bystanders or cover the exhaust with a shop rag.
● Run the tool until the oil has completely passed through the unit.
The best lubrication techniques include both methods.
What Conditions Indicate the Need for Maintenance?.
Pneumatic tools will exhibit several distinct signs that maintenance is required. Higher costs can be avoided
if maintenance is performed when the fi rst signs are evident. The following list details conditions that may
indicate the necessity for service.
1) With the tool disconnected from the air supply, grasp the spindle and spin in the direction of operation. The
spindle should spin freely with no resistance.
2) With the tool disconnected from the air supply, grasp the spindle by hand. Attempt to move the spindle from
side to side and back and forth. Excess play can be a sign that service is required.
3) A reduction in power may indicate the necessity for maintenance.
4) Should the tool not maintain a uniform operating speed, servicing may be required.
For More Information
1) General Industry Safety & Health Regulations 29 CFR, Part 1910 and where applicable Construction
Industry Safety & Health Regulations 29 CFR, Part 1926 available from Superintendent of Documents, Gov't.
Printing Offi ce, Washington, D.C. 20402.
2) Safety Code For Portable Air Tools, ANSI B186.1, B7.1 and Z87.1, available from American National
Standards Institute, Inc. 1430 Broadway, New York, NY 10018
Form No. CHS-OM-01
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