Service Repair Manual
Models
336D2 and 336D2 L Excavator
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Product: EXCAVATOR
Model: 336D2 EXCAVATOR DGR
Configuration: 336D2 L Excavator DGR00001-UP (MACHINE) POWERED BY C9 Engine
Disassembly and Assembly
C9 Engines for Caterpillar Built Machines
Media Number -RENR9579-20
Publication Date -01/02/2015
Date Updated -15/08/2018
i04902499
Unit Injector - Install
SMCS - 1290-012
Installation Procedure
Table 1
Required Tools
Tool
Part Number
Part Description
Qty
A
367-3070
Fuel Injector Installer and Removal Tooling
2
E
149-2955
Seal Protector
1
F
149-2956
Seal Installer
1
G
1U-5718
Vacuum Pump
1
169-7372
Bottle Assembly
1
4C-4057
Clear Plastic Tubing
7.92 mm (0.312 inch) OD
1
4C-4055
Clear Plastic Tubing
6.35 mm (0.250 inch) OD
1
H
417-4368
Reamer
1
J
4C-6161
Tube Brush
1
K
9U-6862
Tapered Brush
1
L
4C-6774
Vacuum Gun Kit
1
M
4C-5026
Tap Wrench
1
1/5
336D2 L Excavator DGR00001-UP (MACHINE) POWERED BY C9 Engine(M00831...
2020/8/17
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NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
1. Evacuate as much fuel and oil as possible from the cylinder head before installing the unit
injector. Several evacuations may be necessary. Use Tooling (G) to remove the fuel and oil
from the cylinder head.
Note: Tooling (L) is available to clean loose material from the sleeve bore and the cylinder.
2. Inspect the unit injector sleeve for damage and carbon deposits.
3. Clean the carbon from the sleeve, the sleeve bore, and the end of the unit injector, if the unit
injector is being reused. Clean the carbon from the seat area that is inside of the cylinder
head. A fine grade of Scotch Brite material is preferred. Use Tooling (H) to clean the bore
of the unit injector tip. Use the Surface Rec