Maintenance, Input Shaft Removal, Output Shaft Removal

MAINTENANCE

RIGHT ANGLE GEARBOX (OUTBOARD) ASSEMBLY & DISASSEMBLY PROCEDURES

INPUT SHAFT REMOVAL

Step 1. Place Gearbox on appropriate work surface.

Step 2. Remove Vent Plug (item #16) or Complete Top Cover (item #18)

Step 3. Turn Gearbox upside doan allowing Oil to drain from gearbox into catch pan for proper disposal. Step 4. Turn Gearbox right side up and drop bottom into a hole for support or lay it on its side laying flat. Step 5. Remove Bolts (item # 23) from front Bearing Cap (item # 24), this will allow front cover to be

removed, It may be required to drive a wedge between front cover and main housing to loosen cover.

Step 6. Remove Input shaft (item #26) and Input Gear (item #27), Input Shaft should pull out with Gear and Bearing Cones (item #12) still on it, Inner Bearing Cone may stay in Housing and Outer Bearing Cone should come off with front Bearing cover.

Step 7. Remove Inner Bearing Cone, Inner Spacer (item # 13), Outer Bearing Cone, Input Gear, Check now for Shims (item # 29,30,31) always note quantity of Shims. Remove outer Spacer (item # 28) from Input Shaft.

Step 8. Remove Input Seal (item # 25), Bearing Cup (item #12) from front Cover and bearing Cup (item#12) from back of Main Housing (Casing) (item # 1).

OUTPUT SHAFT REMOVAL

Step 1. Remove Cotter Pin (item # 11) from Nut (item # 10) and Output Shaft (item # 8) this can be done by reaching through opening in front of Main Housing.

Step 2. Slide Output (Pinion) Gear (item # 9) up off of Output Shaft and out of Main Housing.

Step 3. Output Shaft will come out of Main Housing through the bottom, If Output Seal is still in bottom of the Main Housing use a Soft Metal (Brass or Aluminum) Pin to Drive Shaft down from the top, This will drive Output Seal out at the same time.

Step 4. Reach in from front or top of Main Housing and remove upper Output Shaft Bearing Cone (item # 12)

Step 5. From the Bottom of Main Housing drive out top Bearing Cup (item # 12) and from the top drive out the bottom Bearing Cup (item # 2).

PARTS INSPECTION

Step 1. Inspect and Clean all Parts. Check Bearings, Shafts, Gears, Housing and Covers. Shafts should be inspected at Seal wear areas, Bearing areas, Splines, Threads and all surface areas. Check Housings for cracks and condition of all holes that are threaded. Check Housing and covers where Seals drive in for Burrs and scratches. If Bearing Cones are replaced always replace Cups with them. Gears should not have and rough surfaces where the gears run together. On Main Housing remove any old Gasket Sealer, Scratches, Wash and completely clean it.

OUTPUT SHAFT INSTALLATION

Step 1. Install Upper Output Shaft Bearing Cup (item # 12) into Main Housing from the top, Install Output Shaft Lower Bearing Cup (item # 2) into Main Housing (item # 1) from the bottom, Make sure both Bearing Cup are seated firmly against housing.

Step 2. Install Lower Bearing Cone (item #2) down over Output Shaft from top making sure it is completely seated against shoulder on lower part of Output Shaft.

Step 3. Insert Output Shaft (item # 8) into Main Housing from the bottom till Lower Bearing Cone is seated into Lower Bearing Cup, Slide Upper Bearing Cone down over Output Shaft from the till it seats down against and into upper output Shaft Bearing Cup.

Step 4. Slide Output Gear (item # 9) down over Output Shaft till it sits against upper Bearing Cone.

Step 5. Install Output Shaft Bearing Adjusting nut (item # 10) Tighten Nut to set Pre-Load on Output Shaft

Bearings. Bearing Preload should be from 12 to 14 inch pounds of Rolling Torque.
SR10M/SR15M 10-01	Maintenance Section 5-13	R 11-11-99
© 2004 Alamo Group Inc.