CARRIER-PLANETARY 6Y7879 - Caterpillar

Remove And Install Air Starter
Be sure the air supply to the air starter is turned off.
TYPICAL EXAMPLE1. Remove tubes (1) from the starter drive assembly housing.2. Disconnect starter air inlet line at union (2).3. Fasten a hoist (not shown) to the air start motor. Remove three bolts (3) and remove the air starter. The weight of the air starter is 85 lb. (39 kg).4. Install a new gasket between the air starter and the flywheel housing. Install the air starter with three bolts (3) and lockwashers.5. Connect the starter air inlet line (2) to the air starter.6. Connect tubes (1) to the starter drive assembly housing.
TYPICAL EXAMPLEDisassemble Air Starter
start by:a) remove air starter Make sure there is a complete set of new gaskets, vanes, seals and O-ring seals before the air starter is disassembled. 1. Make a mark to show the position of housing assembly (1) respective to cover (2) for assembly purposes. 2. Remove the bolts that hold the housing assembly in position and remove the housing assembly from the cover. 3. Remove drive assembly (4), spring (5) and seat (3) from the housing assembly. 4. Remove plug (7), oiler and bushing (6) from housing (8).5. Disassemble the drive assembly as follows: a) Remove seal ring (9) from piston (10). b) Remove retainer (13) from the piston with tool (A).c) Slide the piston toward the gear end of clutch assembly (12). d) Remove spacer (14) and two shift rings (11) from the clutch assembly. Do not clean the clutch assembly in kerosene or other solvent.e) Remove piston (10) from clutch assembly (12). 6. Make a mark to show the position of cover (2) respective to the housing for assembly purposes. Remove the bolts that hold the cover in place. 7. Remove the cover with shaft assembly (16) and washer (17) from case assembly (15). 8. Remove the shaft assembly from the cover. 9. Remove seal (18) and O-ring seal (19) from the cover. Some air starters have a snap ring on top of seal (18) to hold the seal in place. Remove this snap ring before the seal is removed. 10. Remove gear (21) from shaft (20) with a press. 11. Remove key (22) and remove bearing (23) from the shaft with a press. 12. Make a mark to show the position of case assembly (15) respective to housing (24) for assembly purposes. Remove the bolts and nuts that hold case assembly (15) in position.13. Remove the case assembly from housing (24). 14. Remove needle bearing (25) from the case assembly. 15. Remove the lockwire, bolts and gear retainer (26) from the rotor. 16. Install gear retainer (26) in an up side down position on the rotor and install the bolts that hold it in place. Do not tighten the bolts completely.17. Install tooling (B) under gear (27) and remove the gear from the rotor. 18. Remove the bolts that hold cover assembly (28) on the opposite end of housing (24). 19. Remove the cover assembly