Types and Uses - Continued

Tools And Their Uses - Hand tools and what they are used for
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TM 9-243 TYPES AND USES - Continued SPANNER WRENCHES (Cont) There are two basic pin-type wrenches. The fixed-pin face has been designed to fit a particular pattern and is nonadjustable. The fixed-pin face is used to remove protective cover plates. The adjustable pin face has two arms joined at a common point. The other end of the arms contain pins which may be engaged in the holes of a cover plate for removal. SAFETY 1. 2. 3. 4. 5. Wrenches should fit the nuts or bolts they are to loosen or tighten. Never turn adjustable wrenches so that the pulling force is applied to the adjustable jaw. Do not attempt to extend the handle in any way to increase the leverage on a wrench. Increased leverage may damage the wrench or the work. Apply penetrating oil to rusted nuts and/or bolts that resist turning. Allow time for oil to penetrate before attempting to turn. Do not strike wrenches with hammers to tighten or loosen nuts or bolts. 6. 7. 8. 9. Do not exert a hard pull on a pipe wrench until it has gripped the work firmly. Remember to pull on the wrench, when possible, in order to protect your knuckles in case the wrench slips. Return all wrenches to their proper places upon completion of each job. This eliminates the possibil- ity of leaving them where they can injure someone. Always keep the wrench in good condition, clean and free from oil or grease. Otherwise it may slip, resulting in possible serious injury to you or damage to the work. 25-13

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