Caterpillar Cat 323D LN Excavator (Prefix RAC) Service Repair Manual (RAC00001 and up).pdf

Service Repair Manual
Models
323D LN and 323D S Excavator

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Product: EXCAVATOR
Model: 323D LN EXCAVATOR RAC
Configuration: 323D LN & 323D S Excavators RAC00001-UP (MACHINE) POWERED BY C6.4 Engine
Disassembly and Assembly
C6.4 Engine for Caterpillar Built Machines
Media Number -KENR8106-09 Publication Date -01/10/2017 Date Updated -18/10/2017
i04625003
Inlet and Exhaust Valve Guides - Remove and Install
SMCS - 1104-010
Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 384-8861 Valve Guide Remover 1
B 138-7573 Link Bracket 4
C 1U-9200 Lever Puller Hoist 1
D 8S-6691 Cylinder Head Repair Stand 1
Start By:
A. Remove the inlet and exhaust valves. Refer to Disassembly and Assembly, "Inlet and
Exhaust Valves - Remove and Install".
B. Remove the electronic unit injectors. Refer to Disassembly and Assembly, "Electronic Unit
Injector - Remove".
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
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323D LN & 323D S Excavators RAC00001-UP (MACHINE) POWERED BY C6.4 E...
2020/9/12
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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.
Note: Refer to Special Instructions, SMHS7953-00, "Use of Valve Seat Insert Puller Group" to
aid with the removal of the inlet and exhaust valve seats.
Illustration 1 g01377064
1. Attach Tooling (B) , Tooling (C) , and a suitable lifting device to cylinder head (1) . Use
Tooling (B) , Tooling (C) , and the suitable lifting device in order to turn over cylinder head
(1) by 180° onto Tooling (D) .
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2. Use Tooling (A) in order to remove valve guides (2) (not shown).
Installation Procedure
Table 2
Required Tools
E 384-8862 Valve Guide Installer 1
NOTICE
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1. Lubricate the outside of valve guides (2) (not shown) with clean engine oil.
2. Use Tooling (E) in order to install new valve guides (2) . Install valve guide (2) so that
valve guide (2) protrudes 16.000 mm (0.6299 inch) above Surface (X) of cylinder head (1) .
End By:
a. Install the electronic unit injectors. Refer to Disassembly and Assembly, "Electronic Unit
Injector - Install".
b. Install the inlet and exhaust valves. Refer to Disassembly and Assembly, "Inlet and Exhaust
Valves - Remove and Install".
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All Rights Reserved.
Private Network For SIS Licensees.
Sat Sep 12 22:29:06 UTC+0800 2020
4/4
2020/9/12

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Product: EXCAVATOR
i04625001
Inlet and Exhaust Valve Seat Inserts - Remove and Install
SMCS - 1103-010
Removal Procedure
Table 1
Required Tools
A
166-7441 Valve Seat Extractor Tool 1
6V-4194 Valve Seat Extractor (1)
1
6V-4196 Valve Seat Extractor (1)
1
B 138-7573 Link Bracket 4
C 1U-9200 Lever Puller Hoist 1
D 8S-6691 Cylinder Head Repair Stand 1
( 1 )
Component of the Valve Seat Extractor Tool Group.
Start By:
A. Remove the inlet and exhaust valves. Refer to Disassembly and Assembly, "Inlet and
Exhaust Valves - Remove and Install".
B. Remove the electronic unit injectors. Refer to Disassembly and Assembly, "Electronic Unit
Injectors - Remove".
NOTICE
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Note: Refer to Special Instructions, SMHS7953-00, "Use of Valve Seat Insert Puller Group" to
aid with the removal of the inlet and exhaust valve seats.
1. Attach Tooling (B ) , Tooling (C) , and a suitable lifting device to cylinder head (1) . Use
Tooling (B ) , Tooling (C) , and the suitable lifting device in order to turn over cylinder head
(1) by 180° onto Tooling (D) .
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2. Use the valve seat grinder of Tooling (A) in order to notch the valve seat.
3. Use the valve seat extractor of Tooling (A) to remove the inlet and exhaust valve seats.
4. Clean the valve seat in the cylinder head. Remove any rough areas from the valve seat in the
cylinder head.
5. Repeat Steps 2 through 4 for the remaining inlet valve seat inserts and exhaust valve seat
inserts.
Table 2
Required Tools
E 384-8859 Valve Seat Installer 1
F 384-8860 Valve Seat Installer 1
NOTICE
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Typical Example
1. Lower the temperature of the new inlet valve seat inserts (2) . Use Tooling (E) in order to
install a new inlet valve seat insert (2) (not shown) in the cylinder head.
Typical Example
2. Lower the temperature of new exhaust valve seat inserts (3) . Use Tooling (E) and Tooling
(F) in order to install the new exhaust valve seat insert (3) (not shown) in the cylinder head.
Note: The temperature of exhaust valve seat insert (3) is lowered in order to ease the
installation of exhaust valve seat insert (3) .
3. Repeat Step 1 and 2 for the remaining inlet valve seat inserts and exhaust valve seat inserts.
End By:
a. Install the inlet and exhaust valves. Refer to Disassembly and Assembly, "Inlet and Exhaust
Valves - Remove and Install".
b. Install the electronic unit injectors. Refer to Disassembly and Assembly, "Electronic Unit
Injectors - Install".
4/5
2020/9/12

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Product: EXCAVATOR
i02746253
Engine Oil Cooler - Remove
SMCS - 1378-011
Removal Procedure
Start By:
a. Remove the fuel injection pump. Refer to Disassembly and Assembly, "Fuel Injection Pump
- Remove".
NOTICE
NOTICE
containing fluids.
Cat products.
1/2
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1. Disconnect harness assembly (1).
2. Remove bolts (2) and remove engine oil cooler (3). Remove gasket (4) (not shown) from the
engine cylinder block.
Sat Sep 12 22:31:04 UTC+0800 2020
2/2
2020/9/12

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Product: EXCAVATOR
i02746254
Engine Oil Cooler - Disassemble
SMCS - 1378-015
Disassembly Procedure
Start By:
a. Remove the engine oil cooler. Refer to Disassembly and Assembly, "Engine Oil Cooler - Remove".
NOTICE
NOTICE
containing fluids.
Cat products.
Note: Cleanliness is an important factor. Before you begin the disassembly procedure, the exterior of the
components should be thoroughly cleaned. This will help to prevent dirt from entering the internal
mechanism. Precision components can be damaged by contaminants or by dirt. Perform disassembly
procedures on a clean work surface. Keep components covered and protected at all times.
1/2
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1. Remove bolts (9) and the washers. Remove cover (8) and gasket (7).
2. Remove nuts (5) and the washers from engine oil cooler cover (4). Remove nuts (6) and the washers
from engine oil cooler cover (4).
3. Remove engine oil cooler core (2) from engine oil cooler cover (4). Remove gaskets (1) and (3).
Sat Sep 12 22:32:03 UTC+0800 2020
2/2
2020/9/12

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Product: EXCAVATOR
i02746255
Engine Oil Cooler - Assemble
SMCS - 1378-016
Assembly Procedure
NOTICE
Note: Cleanliness is an important factor. Before assembly, thoroughly clean all parts in cleaning fluid.
Allow the parts to air dry. Do not use wiping cloths or rags to dry parts. Lint may be deposited on the parts
which may cause trouble. Inspect all parts. If any parts are worn or damaged, use new parts for
replacement. Dirt and other contaminants can damage the precision component. Perform assembly
procedures on a clean work surface. Keep components covered and protected at all times.
Note: Check the gaskets for damage. Replace the components, if necessary.
1/2
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1. Install gaskets (3) and (1) to engine oil cooler core (2). Position engine oil cooler core (2) to engine
oil cooler cover (4).
2. Install the washers and nuts (6). Install the washers and nuts (5).
3. Install gasket (7) and position cover (8). Install the washers and bolts (9).
End By:
a. Install the engine oil cooler. Refer to Disassembly and Assembly, "Engine Oil Cooler - Install".
Sat Sep 12 22:33:03 UTC+0800 2020
2/2
2020/9/12

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Product: EXCAVATOR
i02746256
Engine Oil Cooler - Install
SMCS - 1378-012
NOTICE
Note: Check the gaskets for wear or for damage. Replace the components, if necessary.
1. Install gasket (4) (not shown). Position engine oil cooler (3) to the engine block. Install bolts
(2).
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2. Connect harness assembly (1).
End By:
a. Install the fuel injection pump. Refer to Disassembly and Assembly, "Fuel Injection Pump -
Install".
Sat Sep 12 22:34:02 UTC+0800 2020
2/2
2020/9/12

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Product: EXCAVATOR
i02751808
Engine Oil Relief Valve - Remove and Install
SMCS - 1315-010
Removal Procedure
Start By:
a. Remove the electronic control module. Refer to Disassembly and Assembly, "Electronic
Control Module - Remove and Install".
NOTICE
1/2
2020/9/12

1. Remove engine oil relief valve (1).
2. Remove gasket (2) (not shown). Discard gasket (2).
NOTICE
1. Install a new gasket (2) (not shown).
2. Install engine oil relief valve (1). Tighten engine oil relief valve (1) to a torque of
49 ± 5 N·m (36 ± 4 lb ft).
End By:
a. Install the electronic control module. Refer to Disassembly and Assembly, "Electronic
Control Module - Remove and Install".
Sat Sep 12 22:35:01 UTC+0800 2020
2/2
2020/9/12

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Product: EXCAVATOR
i02751881
Engine Oil Bypass Valve - Remove and Install
SMCS - 1306-010-BV
Removal Procedure
Start By:
a. Remove the oil pan. Refer to Disassembly and Assembly, "Engine Oil Pan - Remove".
NOTICE
1. Remove engine oil bypass valve (1). Remove gasket (2) (not shown). Discard gasket (2).
1/2
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NOTICE
1. Install a new gasket (2) (not shown). Install engine oil bypass valve (1). Tighten engine oil
bypass valve (1) to a torque of 69 ± 5 N·m (51 ± 4 lb ft).
End By:
a. Install the oil pan. Refer to Disassembly and Assembly, "Engine Oil Pan - Install".
Sat Sep 12 22:36:00 UTC+0800 2020
2/2
2020/9/12

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Product: EXCAVATOR
i02751822
Engine Oil Pump Relief Valve - Remove and Install
SMCS - 1304-010
Removal Procedure
NOTICE
1/3
2020/9/12

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. Remove engine oil pump relief valve (1).
NOTICE
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2020/9/12

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Improper assembly of parts that are spring loaded can cause bodily
injury.
To prevent possible injury, follow the established assembly procedure
and wear protective equipment.
1. Install engine oil pump relief valve (1). Tighten engine oil pump relief valve (1) to a torque
of 59 ± 10 N·m (44 ± 7 lb ft).
Sat Sep 12 22:37:00 UTC+0800 2020
3/3
2020/9/12

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Product: EXCAVATOR
i02741773
Engine Oil Pump - Remove
SMCS - 1304-011
Removal Procedure
Table 1
Required Tools
A 1P-2320 Combination Puller 1
B 1P-0510 Driver Group 1
Start By:
a. Remove the front housing. Refer to Disassembly and Assembly, "Housing (Front) -
Remove".
NOTICE
NOTICE
1/4
2020/9/12

containing fluids.
Cat products.
Note: Illustration 1 does not show that the front housing is removed from the cylinder
block.
1. Remove bolts (1) from the cover (2).
2. Remove cover (2) for the engine oil pump from the front housing. Remove gasket (3) (not
shown).
3. Remove driven gear (4) for the oil pump. Pull the gear straight out of the front housing (5)
(slip fit).
2/4
2020/9/12

Caterpillar Cat 323D LN Excavator (Prefix RAC) Service Repair Manual (RAC00001 and up).pdf

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