GUARD AS 3262116 - Caterpillar

2. With the parking/secondary brake engaged, move the transmission to 2nd speed reverse. The parking brake indicator light should come on and the back-up alarm should sound.3. Gradually increase the engine speed to high idle. The machine should not move.
If the machine begins to move, reduce the engine speed immediately and apply the service brake.
4. Reduce the engine speed, move the transmission to NEUTRAL. Lower the bucket to the ground and stop the engine.
If the machine moved while testing the brakes, contact your Caterpillar dealer. Have the dealer inspect and, if necessary, repair the parking/secondary brakes before returning the machine to operation.
Test Brake Accumulator
1. Move the start switch to ON. 2. The brake oil pressure indicator light should come on if not at normal operating pressure.3. Start and run the engine at half speed for two minutes to increase the accumulator pressure. The brake oil pressure indicator light should go off. Stop the engine. 4. Apply and release the service brake pedal, to decrease the accumulator pressure, until the brake oil pressure indicator light comes on (minimum of five applications).5. The parking/secondary brake indicator light will be on when the brake oil pressure indicator light comes on. 6. If the brake oil indicator light comes on with less than five applications of the brake, measure the accumulator nitrogen precharge pressure. Your Caterpillar dealer is equipped to measure the nitrogen gas pressure in the accumulator. Use only dry nitrogen gas for recharging.Air Conditioner (If Equipped)
Test Operation - Adjust Belt
1. Start the engine. Operate the engine at high idle. 2. Set the air conditioner control for maximum cooling, and fan control on HIGH.3. Allow two minutes for the air conditioning system to stabilize. 4. Check for freon in the system as follows: Feel the suction line (1) and the discharge line (2).If the system contains freon, the discharge line will be warmer than the suction line.If the system does not contain, or is very low on freon, poor cooling will result.5. Stop the engine to inspect the compressor belt. 6. Inspect the condition and the adjustment of the compressor belt. The belt should deflect 14 to 20 mm (9/16 to 13/16 inch) under 110 N (25 lb) force.To Adjust
1. Loosen the compressor locknut. 2. Turn the adjusting nut until the correct belt tension is reached. Tighten the adjusting nut to 150 20 N m (110 15 lb ft). 3. Tighten the compressor locknut.4. Recheck the belt adjustment.5. Repeat steps 1 through 3.6. If poor cooling is experienced, turn off the air conditioner. Stop the engine. Contact your Caterpillar dealer for air conditioner system service, if necessary.Fan and Alternator Belts
Inspect/Adjust/Replace
1. Open the access doors on the left side of the machine. Replace the belts in sets only, if one or more belts are worn or damaged.2. Inspect the condition and the adjustment of alternator belts. The belts should deflect 14 to 20 mm (9/16 to 13/16 inch) under 110 N (25 lb) force.Alternator Belt Adjustment
1. Loosen alternator bracket bolt