COVER AS-HEAD 2N3871 - Caterpillar

Illustration 1 g03374581
Input Transfer Gears
(1) Bearing cage
(2) Bolt
(3) Shim pack
(4) Input gear
(5) Bearing cage
(6) Input transfer gear case
(7) Output gear
(8) Shim pack
(9) Bolt Note: Before you assemble the components, make sure that the bearing cups are seated in the housing and in the bearing cage. Also, make sure that the bearing cones are seated against the gear shoulders. Use a 0.038 mm (.0015 inch) shim or a feeler gauge.Note: End play for input gear (4) and output gear (7) is 0.11 0.04 mm (.004 .001 inch).Adjustment Procedure
Install the bearing cups into input transfer gear case (6) and bearing cage (1). Make sure that the bearing cups are fully seated. Install the bearing cones. Make sure that the bearing cones are seated against the shoulders of the gear. Use a 0.038 mm (.0015 inch) shim or a feeler gauge in order to check for a gap.
Position input transfer gear case (6) horizontally with the opening for bearing cage (1) at the top. Place input gear (4) in input transfer gear case (6). Place bearing cage (1) on input transfer gear case (6).
Insert two dowels at 180 degree intervals from each other in input transfer gear case (6).
Assemble bearing cage (1) to input transfer gear case (6) with shim pack (3). Install bolts (2) and tighten bolts (2) to the proper torque. Note: Make sure that bearing cage (1) does not bind in input transfer gear case (6).
Rotate the shaft for input gear (4) until the rolling resistance diminishes to a steady level. Tap the shaft for input gear (4) lightly as you rotate the shaft. Tapping the shaft will help the bearings in the assembly to seat.
Use a dial indicator to measure the end play of the shaft. Lift on the shaft in order to measure the end play.
Repeat Steps 4 through 6 and adjust shim pack (3) in order to obtain a shaft end play that is 0.11 0.04 mm (.004 .001 inch).