VALVE GP 7T9390 - Caterpillar

Alternator Belt
Access the alternator from the left side of the machine.
Inspect the condition of the alternator belt. If the belt is cracked or frayed, replace the belt.
Use a BT-33-97 Borroughs Gauge to check the tension of the alternator belt.The tension of a used belt with more than 30 minutes of operation at rated speed should be 400 44 N (90 10 lb). The tension of a new belt with 30 minutes of operation or less at rated speed should be 534 22 N (120 5 lb).Adjusting the Tension of the Alternator Belt
Illustration 1 g00592143
Loosen one mounting bolt (4) and adjustment bolt (2) .
Insert a ratchet with a square drive into the hole in mounting bracket (1). Use the ratchet as a lever to rotate alternator (3). Rotate the alternator until the correct belt tension is reached.
Tighten adjustment bolt (2) and mounting bolt (4) .
Recheck the tension of belt (5). If the tension of the belt is incorrect, repeat the adjustment procedure.Air Conditioner Belt
Access the compressor from the right side of the machine.
Inspect the condition of the air conditioner belt. If the belt is cracked or frayed, replace the belt.
Use a BT-33-97 Borroughs Gauge to check the tension of the air conditioner belt.Earlier Machines ( 1W-9693 V-Belt )The tension of a used belt with more than 30 minutes of operation at rated speed should be 400 44 N (90 10 lb). The tension of a new belt with 30 minutes of operation or less at rated speed should be 534 22 N (120 5 lb).Later Machines ( 1P-4334 V-Belt )The tension of a used belt with more than 30 minutes of operation at rated speed should be 445 44 N (100 10 lb). The tension of a new belt with 30 minutes of operation or less at rated speed should be 712 22 N (160 5 lb).Adjusting the Tension of the Air Conditioner Belt
Illustration 2 g00994370
Loosen one mounting bolt (10) and adjustment bolt (6) .
Insert a ratchet with a square drive into the hole in mounting bracket (7). Use the ratchet as a lever to rotate compressor (8). Rotate the compressor until the correct belt tension is reached.
Tighten adjustment bolt (6) and mounting bolt (10) .
Recheck the tension of belt (9). If the tension of the belt is incorrect, repeat the adjustment procedure.Water Pump Drive Belt
Open the engine hood in order to access the water pump drive belt.
Inspect the condition of the water pump drive belt. If the belt is cracked or frayed, replace the belt.
Use a BT-33-97 Borroughs Gauge to check the tension of the water pump drive belt.The tension of a used belt with more than 30 minutes of operation at rated speed should be 400 44 N (90 10 lb). The tension of a new belt with 30 minutes of operation or less at rated speed should be 534 22 N (120 5 lb).Adjusting the Tension of the Water Pump Drive Belt
Illustration