CARRIER-PLANETARY 7G9280 - Caterpillar

start by:a) remove elevator1. Put the elevator on the floor.2. Fasten a hoist to the elevator chain and lift the chain off the roller. 3. Remove nut and bolt (1) from the roller arm. Loosen the other nut on the roller arm to permit roller to pivot away from the chain. Remove hoist so chain is not tight. 4. Remove pin (lock) (2) from pin (3). Use hammer to remove pin (3) from the chain.5. Do Steps 2, 3 and 4 to disconnect chain on other side. After both sides are disconnected lift flight (4) off the lower rollers. 6. Remove bolts (5) on the inside of hub (6). Remove the washer in back of the bolts. 7. Remove hub (6) with tooling (A). 8. Remove seal (7) from hub (6). 9. Remove key (9) and washers (shims) (8) from shaft (10). Keep the washers (shims) together for reference during installation. 10. Fasten a hoist to the shaft housing. Lift the housing so the roller is free to turn. Use two men to slide roller (11) off of the shaft. The weight of the roller is 70 lb. (32 kg). 11. Remove bearing (12) from roller (11). 12. Turn the roller over. Remove bearing (13) from roller (11).13. Do Steps 6 through 12 on other side of the shaft. 14. Use two men to remove shaft (14) from the housing. The weight of the shaft is 86 lb. (39 kg). 15. Remove washers (shims) (17), lip type seal (15) and bearing (16) from both ends of the housing. On the inside diameter at the rear of bearing (16) is an O-ring seal. Check the condition of the O-ring seal. If the seal has damage, use new parts for replacement. Keep the washers (shims) together for reference during installation.Assemble Elevator Lower Shaft
Use 5P960 Multipurpose Type Grease on bolts and nuts. 1. Fasten a hoist on the shaft housing. Install the bearing in the shaft housing with tooling (A). 2. Install O-ring seal (1) in the bearing. 3. Use two men to install shaft (2) in the shaft housing approximately in position shown. 4. Install bearing in the inside of roller (3) with tooling (A). 5. Turn the roller over. Install bearing in the outside of roller (3) with tooling (B).6. Do Steps 4 and 5 to the roller on the other side. 7. Install both rollers as shown. Make sure the rollers are installed all of the way on the shaft. 8. Measure the distance between the center of the outside diameter of both rollers. Subtract the distance between the rollers from 47.00 inches (119.4 cm) to find the correct width of washers (shims). Divide the washers (shims) in half. 9. Remove the rollers again. Install half the washers (shims) (4) in each end of the housing. 10. Pull shaft back in the housing and install the seal with tooling (B) on both sides. Install the seal until it makes contact with the counterbore in the housing and with