Service Repair Manual
Model
322C L 322CL Hydraulic Excavator
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Product: EXCAVATOR
Model: 322C EXCAVATOR HEK
Configuration: 322C L Hydraulic Excavator HEK00001-UP (MACHINE) POWERED BY 3126B Engine
Disassembly and Assembly
3126B Engines for Caterpillar Built Machines
Media Number -SENR9581-06
Publication Date -01/08/2018
Date Updated -17/08/2018
i02672998
Unit Injector Hydraulic Pump - Install
SMCS - 1714-012
Installation Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A
5P-0327
Crowfoot Wrench
1
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
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Illustration 1
g00727636
1. Position drive gear (12) on the unit injector hydraulic pump. Install washer (11) and bolt
(10) on the unit injector hydraulic pump. Tighten bolt (10) to a torque of 110 ± 14 N·m
(81 ± 10 lb ft).
2. Lubricate O-ring seal (9) with clean engine oil. Install the O-ring seal on the unit injector
hydraulic pump.
Illustration 2
g00727632
3. Position unit injector hydraulic pump (6) on the timing gear housing. Install three bolts (8)
and tighten three bolts (8) to a torque of 28 ± 7 N·m (20 ± 5 lb ft).
4. Install cable strap (7).
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Illustration 3
g00727629
5. Install return line assembly (4) on the engine block and on fitting (3).
6. Reconnect harness assembly (2).
7. Use Tooling (A) to install line assembly (1).
NOTICE
If the hose is not correctly connected the hose will come loose when the
engine is started and the engine oil will come out of the hose. Engine
damage can result.
NOTICE
Leakage of the high pressure engine oil lines can result in failure of the
engine fuel system.
8. Install