INDICATOR AS 1637833 - Caterpillar

Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 1P-1854 Retaining Ring Pliers 1
B - Plate
50.8 mm (2 inch) by 102 mm (4 inch) by 6 mm (0.25 inch) 2
C 1P-1857 Retaining Ring Pliers 1
D - Allen Wrench (5/16 inch) 1 Start By:
Remove the air starting motor.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Note: Ensure that there is a complete set of new gaskets, vanes, seals, and O-ring seals before the air starting motor is disassembled.Note: The illustrations that follow may show a different orientation of the components from the air starting motor that was removed from the engine. Use the procedures that are given. Maintain the alignment of the components of the air starting motor.
Illustration 1 g01284201
Mark the housing in order to show the position of motor housing (1) in relation to gear case (4) for assembly. Remove bolts (2) in order to remove gear case (4) and drive housing (3) as a unit from motor housing (1).
Illustration 2 g01284203
Use Tooling (A) in order to remove retaining ring (6) from drive gear (5).
Illustration 3 g01284204
Personal injury can result from parts and/or covers under spring pressure.Spring force will be released when covers are removed.Be prepared to hold spring loaded covers as the bolts are loosened.
Note: Air starting motors for standard engine rotation rotate clockwise when the motors are viewed from the pinion end of the starting motor. Bolt (7) for a clockwise rotation starting motor has left-hand threads.Note: Air starting motors for reverse engine rotation rotate counterclockwise when the motors are viewed from the pinion end of the starting motor. Bolt (7) for a counterclockwise rotation starting motor has right-hand threads.
Remove bolt (7) and washer (8) in order to remove drive pinion (9), the sleeve, and the spring from the end of the drive shaft.
Mark the position of drive housing (3) in relation to gear case (4) for assembly. Remove bolts (10) and drive housing (3) from gear case (4).
Illustration 4 g01284214
Remove O-ring seal (11) from drive housing (3).
Illustration 5 g01284221
The piston holds a spring under compression. In order to prevent personal injury, carefully remove the ring that holds the piston in place. Release the tension on the spring slowly.
Personal injury can result from parts and/or covers under spring pressure.Spring force will be released when covers are removed.Be prepared to hold spring loaded covers as the bolts are loosened.
Install Tooling (B) between drive gear (5) and piston (12). Use a suitable press in order to compress the piston return spring. Remove the retaining ring that holds the drive shaft assembly and the piston in drive housing (3).
Illustration 6 g01284838
Slowly release the suitable press in order to remove the force of piston return spring (14). Remove Tooling (B) from the drive gear and piston (12). Remove retaining ring (13) from the piston. Remove the drive gear, the piston, and the drive shaft assembly as a unit from drive housing (3). Remove piston return spring (14) from the drive housing.
Illustration 7 g01284231
Use Tooling (D) in order to