Service Repair Manual
Models
312D Excavator
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Product: EXCAVATOR
Model: 312D EXCAVATOR LRK
Configuration: 312D Excavator LRK00001-UP (MACHINE) POWERED BY C4.2 Engine
Disassembly and Assembly
C4.2 Engine for Caterpillar Built Machines
Media Number -KENR8105-04
Publication Date -01/06/2013
Date Updated -12/06/2013
i02746415
Valve Mechanism Cover Base - Remove and Install
SMCS - 1120-010
Removal Procedure
Start By:
a. Remove the valve mechanism cover. Refer to Disassembly and Assembly, "Valve
Mechanism Cover - Remove and Install".
b. Remove the fuel injection lines. Refer to Disassembly and Assembly, "Fuel Injection Lines
- Remove".
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
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312D Excavator LRK00001-UP (MACHINE) POWERED BY C4.2 Engine(SEBP522...
2020/5/25
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Illustration 1
g01375577
1. Remove clips (4).
2. Disconnect harness assembly (6).
3. Loosen nuts (2) and disconnect harness assembly (3).
4. Repeat Step 3 for the remaining electronic unit injectors.
5. Remove bolts (1).
6. Remove bolts (5). Remove valve mechanism cover base (7) and the gasket.
Installation Procedure
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
2/3
312D Excavator LRK00001-UP (MACHINE) POWERED BY C4.2 Engine(SEBP522...
2020/5/25
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis...
Illustration 2
g01375577
1. Install a new gasket and position valve mechanism cover base (7). Install bolts (5).
2. Install bolts (1). Tighten bolts (1) to a torque of 18 ± 2 N·m (13 ± 1 lb ft).
3. Connect harness assembly (3) and tighten nuts (2).
4. Repeat Step 3 for the remaining electronic unit injectors.
5. Connect harness assembly (6).
6. Install clips (4).
End By:
a. Install the fuel injection lines. Refer to Disassembly and Assembly, "Fuel Injection Lines -
Install".