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MAINTENANCE
SE42 03/08 Maintenance Section 5-8
© 2008 Alamo Group Inc.
MAINTENANCE
GEARBOX SERVICE INSTRUCTIONS
GEARBOX DISASSEMBLY (Mnt-R-0040)
1. Remove 6 capscrews (Ref.#16) from input shaft bearing housing (Ref. #13).
2. Tap around circumference of bearing housing (Ref. #13) to loosen housing and shims. Then (Ref. #9) pull
complete shaft and housing assembly (See Fig. Mnt-R-0040) out of main housing.
3. Remove 4 capscrews (Ref #18), break gasket loose, and then remove the bearing retainer cap (Ref #2).
4. Output shaft assembly must be removed from main housing by driving or pulling shaft out bottom end.
NOTE: Once lower bearing is out of housing the complete assembly will drop down until top bearing
engages lower bearing bore.
To complete removal of output shaft assembly it is necessary to keep shaft aligned on center line of housing
when removing top bearing out bottom end. Normally the simplest method of removing the output shaft
assembly is to attach a slide hammer puller to the shaft and use that to pull the shaft out.
1. Seal Output Shaft
2. Cap, Bearing Retainer, (Output)
3. Gasket, Output, Cap
4. Bearing, Ball
5. Shaft, (Output Pinion)
6. Spacer, Bearing, (Output)
7. Snap Ring
8. Bearing, (Input Rear)
9. Shaft, (Input)
10. Gear (Input)
11. Snap Ring
12. Shim, Side Housing
13. Housing, Side or Input
14. Seal, Input
15. Housing, Main
16. Bolt, (3/8” x 1")
17. Lockwasher (3/8”)
18. Bolt, (3/8” x 1-1/4”)
19. Plug, Pipe
20. Plug, Pipe (1/8” Oil Level)
5. The gearbox is now disassembled into four (4) sub-assemblies:
1. Input shaft assembly
2. Output shaft assembly
3. Lower bearing retainer assembly
4. Main housing assembly