Do your Before preventive maintenance just before you operate the hydraulic impact wrench.
Pay attention to the warnings and cautions.
Do your During preventive maintenance during operation. (During operation means to monitor the
hydraulic impact wrench and its related components while they are being operated.) Pay attention to
the warnings and cautions.
Do your After preventive maintenance right after operating the hydraulic impact wrench. Pay
attention to the warnings and cautions.
Location. Item to Check/Service Column. This column provides the location and the item to be checked or
Procedure Column. The Procedure column of your PMCS table tells how to do the required checks and services.
Carefully follow these instructions. If your hydraulic impact wrench does not perform as required, notify unit
maintenance. Report any malfunctions or failures on the proper DA Form 2404.
Not Fully Mission Capable if: Column. Entries in this column will be keyed specifically to checks listed in the
Procedure column for the purpose of identifying the criteria that will cause the equipment to be classified as not
fully mission capable because of inability to perform its primary mission. Entries in this column will:
Identify conditions that make the equipment not ready/available for use.
Deny use of equipment until corrective action has been performed. Always keep warnings
and cautions in mind as you do PMCS. Take along all tools needed and a clean cloth (Appx. C,
item 5) or two to make checks.
To Maximize Effectiveness of PMCS, Always Watch for Following Conditions:
Dirt and Grease. Keep your wrench clean. Dirt, grease, oil and other debris may hide a serious problem
and will shorten the life of your equipment. Clean as you work.
Dry-cleaning solvent (PD-680) is toxic and flammable. Wear protective goggles and gloves; use
in a well ventilated area; avoid contact with skin, eyes, and clothes, and do not breathe vapors.
Keep away from heat or flame. Never smoke when using solvent; the flashpoint for type I dry-
cleaning solvent is 100 degrees Fahrenheit (oF) (37.8 degrees Celsius [oC]) and for type II is 138oF
(58.9oC). Failure to do so may result in injury or death to personnel.
If personnel become dizzy while using dry-cleaning solvent, immediately get fresh air and
medical help. If drycleaning solvent contacts skin or clothes flush with cold water. If solvent
contacts eyes, immediately flush eyes with water and get immediate medical help.
Use dry-cleaning solvent (Appx. C, item 16) on all metal surfaces. Use detergent (Appx. C, item 11) and
water when you clean rubber or plastic materials.