ADAPTER 7S8950 - Caterpillar

Lubrication
Always use an air line lubricator with these air starting motors.For temperatures above 0°C (32°F), use a non detergent 10W engine oil.For temperatures below 0°C (32°F), use air tool oil.Air Starting Motor
Components Of The Air Starting Motor
(1) Motor housing cover. (2) Plug. (3) Plug. (3A) Plug. (6) Bolt (cap screw). (7) Lockwasher. (8) Gasket. (9) Rotor rear bearing. (10) Bearing retainer. (11) Rear end plate. (12) Cylinder. (13) Dowel. (14) Rotor vane. (15) Rotor. (16) Front end plate. (17) Rotor front bearing. (18) Motor housing. (19) Gear case gasket. (20) Rotor pinion. (21) Rotor pinion retainer. (22) Gear case. (23) Bearing rejecting washer. (24) Rear bearing (for the drive shaft). (25) Drive gear. (25A) Thrust washer. (26) Key (for the drive gear). (27) Front bearing (for the drive shaft). (28) Gear case cover. (29) Grease seal (for the drive shaft). (30) Cover seal. (31) Piston seal. (32) Bolt. (33) Lockwasher. (34) Drive shaft. (35) Drive shaft collar. (36) Piston. (36A) Piston ring. (37) Shift ring. (38) Shift ring retainer. (39) Shift ring spacer. (40) Piston return spring. (41) Return spring seat. (42) Starter drive (pinion). (43) Lockwasher. (44) Bushing (for the bolts). (45) Drive housing. (46) Drive housing bushing. (47) Oiler felt (for the bushing). (48) Oiler plug.
Rear View Of The Cylinder And Rotor For Clockwise Rotation
(12) Cylinder. (12A) Air inlet passages. (12B) Dowel hole. (15) Rotor.
Air Starting Motor
(6) Bolt. (12) Cylinder. (15) Rotor. (16) Front end plate. (22) Gear case. (25) Drive gear. (28) Gear case cover. (29) Grease seal. (32) Bolt. (34) Drive shaft. (35) Drive shaft collar. (42) Starter drive (pinion). (45) Drive housing. (49) Air inlet. (50) Deflector (air outlet). (51) Mounting flange (on the drive housing).The cylinder (12) must be assembled over the rotor (15) and on the front end plate (16) so the dowel hole (12B) and the inlet passages (12A) for the air are as shown in the rear view illustration of the cylinder and rotor. If the installation is not correct, the starter drive (42) will turn in the wrong direction.Tighten the bolts (6) of the rear cover in small increases of torque for all bolts until all bolts are tight 30 5 N m (22 4 lb ft).Put a thin layer of lubricant on the lip of the seal (29) and on the outside of the collar (35), for installation of drive shaft (34). After installation of the shaft through the gear case cover (28) check the lip of the grease seal (29). It must be turned correctly toward the drive gear (25). If the shaft turned the seal lip in the wrong direction, remove the shaft and install again. Use a tool with a thin point to turn the seal lip in the correct direction.Tighten the bolts (32) of the drive housing in small increases of torque for all bolts until all bolts are tight 11.3 N m (100 lb in).Check the motor for correct operation. Connect an air hose to the motor inlet (49) and