MAINTENANCE
FN180/FN120 07/12
Maintenance Section 5-33
© 2012 Alamo Group Inc.
MAINTENANCE
Step V.
From the bottom of Main Housing drive out top Bearing Cup (20) and from the top drive out the bottom Bearing
Cup (12).
PARTS INSPECTION
Step I
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 I
Install Upper Output Shaft Bearing Cup (20) into Main Housing from the top. Install Output Shaft Lower Bearing
Cup (12) into Main Housing (1) from the bottom. Make sure both Bearing Cups are seated firmly against
housing.
STEP II
Install Lower Bearing Cone (12) down over Output Shaft from top making sure it is completely seated against
shoulder on lower part of Output Shaft.
STEP III
Insert Output Shaft (16) 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. Install shims which were under gear.
STEP IV
Slide Output Gear (17) down over Output Shaft till it sits against upper Bearing Cone and Shims.
STEP V
Install Output Shaft Bearing Adjusting nut (18). Tighten Nut to set Pre-Load on Output Shaft Bearings. Bearing
Preload should be from 15 to 20 inch pounds of Rolling Torque.
STEP VI
Using Soft Metal (Brass or Aluminum) Pin, strike both ends of Shaft with a hammer and recheck the Bearing
Pre-Load. This is to ensure Bearings and components are centered and seated. If Bearing Pre-Load is OK
insert Cotter Pin (19) and bend ends.
STEP VII
To install the Output Seal, put a light coat of grease on ID of Seal or on OD of shaft where Seal rides. Install the
Output Seal using a Seal Driver.
Summary of Contents for FN120
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Page 11: ...Safety Section 1 1 2012 Alamo Group Inc SAFETY SECTION ...
Page 28: ...SAFETY FN180 FN120 07 12 Safety Section 1 18 2012 Alamo Group Inc SAFETY Decal Description ...
Page 29: ...SAFETY FN180 FN120 07 12 Safety Section 1 19 2012 Alamo Group Inc SAFETY ...
Page 30: ...SAFETY FN180 FN120 07 12 Safety Section 1 20 2012 Alamo Group Inc SAFETY ...
Page 31: ...SAFETY FN180 FN120 07 12 Safety Section 1 21 2012 Alamo Group Inc SAFETY ...
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Page 91: ...Introduction Section 2 1 2012 Alamo Group Inc INTRODUCTION SECTION ...
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Page 97: ...Assembly Section 3 1 2012 Alamo Group Inc ASSEMBLY SECTION ...
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Page 107: ...Operation Section 4 1 2012 Alamo Group Inc OPERATION SECTION ...
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Page 157: ...Maintenance Section 5 1 2012 Alamo Group Inc MAINTENANCE SECTION ...
Page 160: ...MAINTENANCE FN180 FN120 07 12 Maintenance Section 5 4 2012 Alamo Group Inc MAINTENANCE ...
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Page 192: ...SEGURIDAD FN180 FN120 07 12 Sección de Seguridad 1 27 2012 Alamo Group Inc SEGURIDAD ...
Page 193: ...SEGURIDAD FN180 FN120 07 12 Sección de Seguridad 1 26 2012 Alamo Group Inc SEGURIDAD ...
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Page 200: ...SEGURIDAD FN180 FN120 07 12 Sección de Seguridad 1 19 2012 Alamo Group Inc SEGURIDAD ...
Page 201: ...SEGURIDAD FN180 FN120 07 12 Sección de Seguridad 1 18 2012 Alamo Group Inc SEGURIDAD ...
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Page 204: ...SEGURIDAD FN180 FN120 07 12 Sección de Seguridad 1 15 2012 Alamo Group Inc SEGURIDAD ...
Page 218: ...Sección de Seguridad 1 1 2012 Alamo Group Inc SECCIÓN DE SEGURIDAD ...
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