SEAL 6I0300 - Caterpillar

Note: The engine may auto start. Ensure that the power supply is isolated before any service or repair is performed.Inspection
To maximize the engine performance, inspect the belt for wear and for cracking. Replace a belt that is worn or damaged.If the belt is too loose, vibration causes unnecessary wear on the belt and the pulley.
Illustration 1 g02148928
Typical example
Remove the bolts (1) and remove the guard (2). After inspection of the belt or adjustment of the belt, install the guard.
Illustration 2 g01626059
Typical example
To 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 time period.
Align the guard (2) to the engine. Install the bolts (1). Tighten the bolts securely. Adjustment
Illustration 3 g01560846
Loosen the nut and bolt (1). Then loosen the nut and bolt (2).
Illustration 4 g01626064
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 cover. Refer to "Inspection" for more information. Replace
Refer to Disassembly and Assembly manual, "V belt Remove and Install" for more information.