Service Repair Manual
Models
120G Motor Grader
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Product: MOTOR GRADER
Model: 120G MOTOR GRADER 4HD
Configuration: 120G Motor Grader 4HD00001-UP (MACHINE) POWERED BY 3304 Engine
Disassembly and Assembly
3304B and 3306B Engines for Caterpillar Built Machines
Media Number -SENR5598-09
Publication Date -01/01/2013
Date Updated -25/01/2013
i07103919
Fuel Injection Pump Housing and Governor - Remove
SMCS - 1286-011
Removal Procedure
Table 1
Required Tools
Tool Part Number
Part Description
Qty
A
8S-2264
Pump Impeller Puller
1
8B-7560
Step Plate
1
0T-0513
Bolt
2
5P-1075
Hard Washer
2
Start By:
a. Remove the fuel injection lines. Refer to Disassembly and Assembly, "Fuel Injection Lines
- Remove and Install".
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
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Illustration 1
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3304B Engine
1. On the 3304B engine, remove oil supply line (26), oil drain line (25), and heat shield (27).
Inspect the O-ring seal around oil drain line (25). Replace the O-ring seal if the O-ring seal
is damaged. Remove the gaskets and the screen from the top of the turbocharger.
Note: The following illustrations are of a 3306B engine.
Illustration 2
g00452289
2. Remove six nuts (1) and the washers and remove cover (2).
Note: Separate nut (1) and the mounting stud, if the nut and the mounting stud come out of
the housing together. Apply thread sealant to the mounting studs and reinstall the mounting
studs to a depth of 19.0 ± 0.8 mm (0.74 ± 0.03 inch).
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120G Motor Grader 4HD00001-UP (MACHINE) POWERED BY 3304 Engine(SEBP...
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Illustration 3
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3. Remove center bolt (3) and spacer (4).
Illustration 4
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4. Install center bolt (3) and leave a gap of 6.4 mm