Service Repair Manual
Models
120G Motor Grader
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Product: MOTOR GRADER
Model: 120G MOTOR GRADER 82V
Configuration: 120G MOTOR GRADER 82V00668-UP (MACHINE) POWERED BY 3304 ENGINE
Disassembly and Assembly
12G, 120G, 130G & 140G MOTOR GRADERS POWER TRAIN
Media Number -SENR3649-00
Publication Date -01/10/1987
Date Updated -27/09/2012
SENR36490004
Brake And Wheel Spindle Housings
SMCS - 4205-011; 4205-012; 4205-015; 4205-016; 4251
Remove Brake And Wheel Spindle Housings
Start By:
a. remove drive chains
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1. Release the air pressure in the air tank by loosening the bleed valves.
Do not disconnect the air line to the brake and wheel spindle housing
until the air pressure is zero.
2. Remove two nuts (2), the washers and guard (1) from the housing.
3. Disconnect the air line from the housing and the block on the tandem housing. Remove the air
line.
4. Fasten a hoist and tooling (A) to the plate on the brake and wheel spindle housing and to the
stud on the wheel spindle.
5. Remove nuts (3) and the washers that hold the brake and wheel spindle housing to the tandem
housing. Remove brake and wheel spindle housing (4). Weight is 159 kg (350 lb.).
Install Brake And Wheel Spindle Housings
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1. Fasten a hoist and tooling (A) to brake and wheel spindle housing. Put brake and wheel spindle
housing (1) in position on the studs in tandem housing (2).
2. Install the nuts (3) and the washers that hold the brake and wheel spindle housing to the tandem
housing.
3. Remove the hoist and tooling (A). Install the air line on the brake and wheel spindle housing
and the block on the tandem housing. Install the guard on the housing. Install the two nuts and the
washers that hold it.
End