Caterpillar Cat 322C L 322CL Hydraulic Excavator (Prefix HEK) Service Repair Manual (HEK00001 and up).pdf

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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322C L Hydraulic Excavator HEK00001-UP (MACHINE) POWERED BY 3126B En...
2019/9/16
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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.
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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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 hose assembly (5) and lock the hose assembly in position. Apply pressure in order to
snap the hose assembly into the quick coupling for each of the ends.
Note: Be sure to check the connection by pulling back on the hose.
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All Rights Reserved.
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Mon Sep 16 21:50:54 UTC+0800 2019
3/3
2019/9/16

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Product: EXCAVATOR
i01929376
Turbocharger - Remove
SMCS - 1052-011
Removal Procedure
NOTICE
NOTICE
Care must be taken to ensure that fluids are contained during
performance of inspection, maintenance, testing, adjusting, and repair
of the product. Be prepared to collect the fluid with suitable containers
before opening any compartment or disassembling any component
containing fluids.
Refer to Special Publication, NENG2500, "Dealer Service Tool
Catalog" for tools and supplies suitable to collect and contain fluids on
Cat products.
Dispose of all fluids according to local regulations and mandates.
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1. Remove bolts (1) and the gasket. Remove bolts (3) and tube assembly (2) from the
turbocharger.
2. Remove the bolts and the gasket in order to disconnect oil supply tube assembly (5) from
the turbocharger.
3. Remove nuts (4), turbocharger (6), and the gasket from the exhaust manifold.
Mon Sep 16 21:51:49 UTC+0800 2019
2/2
2019/9/16

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i01978052
Turbocharger - Disassemble
SMCS - 1052-015
Disassembly Procedure
NOTICE
NOTICE
Care must be taken to ensure that fluids are contained during
performance of inspection, maintenance, testing, adjusting, and repair
of the product. Be prepared to collect the fluid with suitable containers
before opening any compartment or disassembling any component
containing fluids.
Refer to Special Publication, NENG2500, "Dealer Service Tool
Catalog" for tools and supplies suitable to collect and contain fluids on
Cat products.
Dispose of all fluids according to local regulations and mandates.
1/2
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1. Place alignment marks on the two housings and the cartridge assembly for the correct
alignment during assembly.
2. Disconnect hose (4) from compressor housing (3).
3. Remove waste gate (5) from turbine housing (1).
4. Remove turbine housing (1).
5. Remove compressor housing (3) from cartridge assembly (2).
Mon Sep 16 21:52:45 UTC+0800 2019
2/2
2019/9/16

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i01978165
Turbocharger - Assemble
SMCS - 1052-016
Assembly Procedure
NOTICE
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1. Position compressor housing (3) on cartridge assembly (2) and align the marks on the
components.
2. Position turbine housing (1) on cartridge assembly (2) and align the marks on the
components.
3. Install waste gate (5).
4. Connect hose (4) to compressor housing (3).
Mon Sep 16 21:53:41 UTC+0800 2019
2/2
2019/9/16

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i01334762
Turbocharger - Install
SMCS - 1052-012
NOTICE
1. Inspect the turbocharger gasket for wear or damage. If the turbocharger gasket is worn or
damaged, use a new part for replacement.
2. Apply 5P-3931 Anti-Seize Compound on the threads of the mounting studs for the
turbocharger.
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3. Position the turbocharger gasket and turbocharger (6) on the exhaust manifold. Install nuts
(4) that fasten turbocharger (6) to the exhaust manifold.
4. Tighten the locknuts that fasten the turbocharger to the exhaust manifold.
Tighten the 3E-8017 Locknut with the Spiralock thread to the following torque: ...
54 ± 5 N·m (40 ± 4 lb ft)
Tighten the standard 9X-6620 Locknut to the following torque: ... 70 ± 5 N·m (50 ± 4 lb ft)
5. Inspect the gaskets for oil supply tube assembly (5) and tube assembly (2). If the gaskets are
worn or damaged, use a new part for replacement.
6. Position tube assembly (2) and the gasket on turbocharger (6). Install bolts (1) on the
turbocharger and install bolts (3) on the cylinder block.
7. Install the gasket for oil supply tube assembly (5) and connect oil supply tube assembly (5)
to turbocharger (6).
Mon Sep 16 21:54:37 UTC+0800 2019
2/2
2019/9/16

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Product: EXCAVATOR
i01978190
Exhaust Manifold - Remove and Install
SMCS - 1059-010
Removal Procedure
Start By:
a. Remove the turbocharger. Refer to Disassembly and Assembly, "Turbocharger - Remove".
1. Remove bolts (1), locks (3), exhaust manifold (2), and the gaskets from the cylinder head
assembly.
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Table 1
Required Tools
A 2P-2333 High Temperature Sealer 1
B 5P-3931 Anti-Seize Compound 1
NOTICE
Excessive use of sealant can cause damage to components.
To avoid component damage use only the amount of sealant necessary
for the application.
Note: Apply Tooling (A) to the outside diameter of the male ends of exhaust manifold (2) if
exhaust manifold (2) is disassembled. Assemble exhaust manifold (2) and remove the
excess sealer from the joints.
1. Apply Tooling (B) to the threads of bolts (1). Position the gaskets and exhaust manifold (2)
on the cylinder head assembly. Install locks (3) and bolts (1).
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2. Tighten bolt (1) through bolt (12) in a numerical sequence. Tighten bolts to 4 ± 1 N·m
(35 ± 9 lb in).
3. Tighten bolt (1) through bolt (12) in a numerical sequence 45 ± 5 N·m (33 ± 4 lb ft).
Note: Prior to starting or running the engine, allow the sealant in the exhaust manifold joints
to air dry for 24 hours.
End By:
a. Install the turbocharger. Refer to Disassembly and Assembly, "Turbocharger - Install".
Mon Sep 16 21:55:33 UTC+0800 2019
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2019/9/16

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Product: EXCAVATOR
i01978837
Air Inlet Heater Solenoid - Remove and Install
SMCS - 1090-010-OD
Mon Sep 16 21:56:28 UTC+0800 2019
1/1
2019/9/16

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i01929576
Air Inlet Cover - Remove and Install
SMCS - 1087-010-CH
Removal Procedure
Start By:
a. Remove the air inlet heater. Refer to Disassembly and Assembly, "Air Inlet Heater -
Remove and Install".
b. Remove the fuel filter base. Refer to Disassembly and Assembly, "Fuel Filter Base -
Remove and Install".
1. Disconnect harness assembly (2) for the boost sensor.
2. Remove the bolts and mounting bracket (1) for the fuel filter base.
3. Remove the bolts and air inlet cover (3).
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1. Inspect the gasket for air inlet cover (3). Replace the gasket, if necessary.
2. Position air inlet cover (3), mounting bracket (1) for fuel filter base, and the wiring clip on
the cylinder head. Install the bolts.
3. Connect harness assembly (2) for the boost sensor.
End By:
a. Install the fuel filter base. Refer to Disassembly and Assembly, "Fuel Filter Base - Remove
and Install".
b. Install the air inlet heater. Refer to Disassembly and Assembly, "Air Inlet Heater - Remove
and Install".
Mon Sep 16 21:57:24 UTC+0800 2019
2/2
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i01377295
Air Inlet Elbow - Remove and Install
SMCS - 1087-010-E4
Removal Procedure
NOTICE
1. Loosen hose clamp (2) and remove hose (1) from the air inlet elbow (3).
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2. Disconnect plug (5) from the air temperature sensor.
3. Remove eight bolts (4). Remove air inlet elbow (3).
NOTICE
1. Clean the joint face on the air inlet elbow and the joint face on the air inlet cover with
solvent. Apply 4C-9500 Quick Cure Primer on the joint face. Allow the primer to air dry for
a minimum of three to five minutes.
2. Apply 1U-8846 Sealant to the joint face of the air inlet elbow and to the joint face of the air
inlet cover. Installation of the air inlet elbow must be within ten minutes of application of
the sealant.
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3. Position air inlet elbow (3) on the air inlet cover.
4. Install eight bolts (4).
5. Connect plug (5) to the air temperature sensor.
6. Install hose (1) on air inlet elbow (3). Tighten hose clamp (2).
Mon Sep 16 21:58:20 UTC+0800 2019
3/3
2019/9/16

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Product: EXCAVATOR
i02374873
Inlet and Exhaust Valves - Remove and Install
SMCS - 1105-010
Removal Procedure
Table 1
Required Tools
A 5S-1330 Valve Spring Compressor 1
Start By:
a. Remove the cylinder head assembly. Refer to Disassembly and Assembly, "Cylinder Head -
Remove".
NOTICE
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Personal injury can result from being struck by parts propelled by a
released spring force.
Make sure to wear all necessary protective equipment.
Follow the recommended procedure and use all recommended tooling to
release the spring force.
1. Use Tooling (A) to compress valve spring (4). Remove retainer lock (6).
2. Remove Tooling (A). Remove spring retainer (5), valve spring (4), and washer (3).
3. Remove valve seal (1) and valve (2).
4. Repeat Steps 1 through 3 in order to remove the remaining inlet valves and exhaust valves.
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Caterpillar Cat 322C L 322CL Hydraulic Excavator (Prefix HEK) Service Repair Manual (HEK00001 and up).pdf