TERMINAL-CABLE 1S7251 - Caterpillar

Note: The engine may have the ability to auto start. Ensure that the power is isolated before any service or repair is performed.Inspection
To maximize the engine performance, inspect the belts for wear and for cracking. Replace belts that are worn or damaged.For applications that require multiple drive belts, replace the belts in matched sets. Replacing only one belt of a matched set will cause the new belt to carry more load because the older belt is stretched. The additional load on the new belt could cause the new belt to break.If the belts are too loose, vibration causes unnecessary wear on the belts and pulleys. Loose belts may slip enough to cause overheating.
Illustration 1 g01558534
Typical example
Remove the bolts (2).
Remove the radiator guard (1). After inspection of the belt or adjustment of the belt, install the guard.
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Typical example
To accurately check the belt tension, install 144-0235 Belt Tension Gauge. Install the gauge (3) at the center of the longest free length and check the tension. The correct tension for a used belt is 355 N (79.8 lb). If the tension of the belt is below 250 N (56 lb) adjust the belt to 355 N (79.8 lb).The correct tension for a new belt or new belts is 535 N (120 lb). A higher tension is required in order to compensate for the stretch that is in a new belt. Only use the higher tension on a belt that has not been used. A used belt is a belt that has been in operation for 30 minutes or a longer period of time.
Align the guard (1) to the engine. Install the bolts (2). Tighten the bolts securely. Adjustment
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Loosen the nut and bolt (1). Then loosen the nut and bolt (2).
Illustration 4 g01558693
Typical example
Loosen bolt (3) and adjust the alternator in order to alter the belt tension. Tighten all bolts for the adjustment of the alternator to 22 N m (16 lb ft).
Install the radiator guard . Refer to "Inspection" for more information. Replace
Refer to Disassembly and Assembly manual, "V belt Remove and Install" for more information.