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OM2006.1 06/98
General Safety
WHEN REPAIRS ARE NECESSARY
1. Only qualified maintenance personnel who understand the systems being repaired should accomplish repairs.
2. Many components on the 530M Truck are large and heavy. Insure that lifting equipment - hoists, slings, chains,
lifting eyes - are of adequate capacity to handle the lift.
3. DO NOT WORK under a suspended load. Do not work under raised body unless body safety cables, props, or
pins are in place to hold the body in up position.
4. Do not repair or service truck while engine is running, except when adjustments can only be made under such
conditions. Keep a safe distance from moving parts.
5. When servicing any air conditioning system with refrigerant, wear a face shield and cold resistant gloves for
protection against freezing. Be certain to follow all current regulations for handling and recycling refrigerants.
6. Follow package directions carefully when using cleaning solvents.
7. If an auxiliary battery assist is needed, first use one cable to connect the 24V positive (+) post of the disabled
truck batteries to the 24V positive (+) post of the auxiliary assist. Use second cable to connect the 24V negative
(-) post of the auxililary assist battery to a frame ground (-) on the disabled truck away from the battery.
8. Always disconnect the positive and negative battery cables of the vehicle before doing any welding on the unit.
Failure to do so may seriously damage the battery and electrical equipment. Disconnect battery charging
alternator lead wire and isolate transmission electronic control components before making welding repairs.
Always fasten the welding machine ground (-) lead to the piece being welded; grounding clamp MUST BE
ATTACHED AS NEAR AS POSSIBLE to the weld area. Never allow welding current to pass through ball
bearings, roller bearings, suspensions, or hydraulic cylinders. Always avoid laying welding cables over or near
the vehicle electrical harnesses. Welding voltage could be induced into the electrical harness and possibly cause
damage to components.
9. If truck is to be towed for any reason, use a rigid tow bar. Check truck cab for decal recommending special towing
precautions. (Also refer to Towing Procedure in OPERATING INSTRUCTIONS.)
10. Drain, clean and ventilate fuel tanks and/or hydraulic tanks before making any welding repairs.
11. Relieve pressure in lines or hoses before making any disconnects.
12. After adjustments or repairs, replace all shields, screens and clamps.
13. Tire Care:
Do not weld or apply heat on the rim assembly with the tire mounted on the rim. Resulting gases inside the
tire may ignite, causing explosion of tire and rim.
14. Only a qualified operator or experienced maintenance personnel who are also qualified in operation should move
the truck under its own power in the repair facility or during road testing after repairs are complete.
Any operating fluid, such as hydraulic oil or brake fluid escaping under pres-
sure, can have sufficient force to enter a person's body by penetrating the skin.
Serious injury and possibly death may result if proper medical treatment by a
physician familiar with this injury is not received immediately.
Do not stand in front of rim and locking ring when inflating tire mounted on the
machine. Observers should not be permitted in the area and should be kept
away from the side of such tires.
Safety - Section 2
Page 2-17
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