Caterpillar Cat 320DLN Excavator (Prefix PCX) Service Repair Manual Instant Download.pdf

Service Repair Manual
Models
320DLN Excavator

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Product: EXCAVATOR
Model: 320D LN EXCAVATOR PCX
Configuration: 320D L & 320D LN Excavators PCX00001-UP (MACHINE) POWERED BY C6.4 Engine
Disassembly and Assembly
320D Excavator Machine Systems
Media Number -RENR8614-14 Publication Date -01/05/2013 Date Updated -19/07/2017
i02606876
Track Carrier Roller - Remove
SMCS - 4154-011
Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 8T-5255 Hydraulic Jack 1
1. Start the engine. Park the machine on a hard, level surface. Shut off the engine.
Personal injury or death can result from grease and oil coming out of
the relief valve.
Grease and oil are under high pressure coming out of the relief valve
and can penetrate the body.
Do not watch the relief valve to see if grease is escaping. Watch the track
or track adjustment cylinder to see if the track is being loosened.
Make sure the vent holes are clean before the tension is released on the
track.
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https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw...

Illustration 1 g00489342
2. Release the tension on the track.
3. Loosen relief valve (1) by one turn only. If the track does not loosen after opening the relief
valve, move the machine forward and backward until the tension is released.
4. Loosen bolt (2) that holds track carrier roller (3) to the mounting bracket on the
undercarriage.
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5. Position Tooling (A) and suitable cribbing under the track assembly, as shown.
6. Use Tooling (A) in order to lift the track assembly off the track carrier roller.
7. Remove track carrier roller (3). The weight of track carrier roller (3) is 17 kg (38 lb).
Reference: Refer to Undercarriage Reconditioning Bulletin, SEBF8568, "Hydraulic Excavator
Roller Disassemble and Assembly Procedures" for the disassembly and assembly procedures for
the track carrier roller.
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Mon Feb 10 14:04:40 UTC+0800 2020
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Product: EXCAVATOR
i02606880
Track Carrier Roller - Install
SMCS - 4154-012
Installation Procedure
Table 1
Required Tools
A 8T-5255 Hydraulic Jack 1
1. Make sure that the shaft of the track carrier roller and the bore in the mounting bracket on
the undercarriage are clean and free of dirt.
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(x) Mounting bracket
2. Place the track carrier roller in position in the mounting bracket. The weight of track carrier
roller is 17 kg (38 lb). Adjust the carrier roller until Distance (a), the distance between the
outside face of the mounting bracket and the carrier roller is 7.0 ± 0.5 mm
(0.28 ± 0.02 inch).
3. After you adjust the position of carrier roller (3) in the mounting bracket, tighten bolt (2).
4. Make sure that carrier roller (3) rotates smoothly by manually turning the carrier roller.
5. Slowly lower the track assembly onto the carrier roller with Tooling (A).
6. Tighten the tension of the track. Refer to Operation and Maintenance Manual, "Track
Adjustment - Adjust" for the correct procedure.
Mon Feb 10 14:05:36 UTC+0800 2020
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Product: EXCAVATOR
i02616683
Track Roller - Remove
SMCS - 4180-011
Removal Procedure
Table 1
Required Tools
A
8S-7611 Tube 2
8S-7615 Pin 2
8S-7640 Stand 2
B 183-4797 Track Roller Lifting Fork 1
Note: There is a track guide on each side of the machine. The procedure that follows is for the
removal of the track roller with the track guide.
1. Start the engine. Park the machine on a hard, level surface. Stop the engine.
2. Release the tension on the track. Refer to Operation and Maintenance Manual, "Track
Adjustment - Adjust".
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Note: Adjust the height of Tooling (A) in order to have sufficient clearance for the removal
of the track rollers when Tooling (A) is installed under the undercarriage (1) of the machine.
3. Lift the side of the machine. Install Tooling (A) under the undercarriage, as shown.
4. Loosen the bolts that hold track guide (2) to the undercarriage.
Note: Do not remove the bolts at this time.
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5. Position Tooling (B) and a suitable lifting device under track guide (2), as shown. Remove
the bolts that secure the track guide. Remove track guide (2).
6. Remove rock guards (3) from the undercarriage, if equipped.
7. Loosen the bolts that secure track roller (4) to the undercarriage.
Note: Do not remove the bolts at this time.
8. Position Tooling (B) and a suitable lifting device under track roller (4), as shown.
9. Remove the bolts that secure track roller (4). The weight of track roller (4) is approximately
40 kg (88 lb). Remove track roller (4).
10. Refer to Undercarriage Reconditioning Bulletin, "Hydraulic Excavator Roller Disassemble
and Assembly Procedures" for the disassembly and assembly procedures of the track roller.
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Product: EXCAVATOR
i02616663
Track Roller - Install
SMCS - 4180-012
Table 1
Required Tools
A
8S-7611 Tube Assembly 2
8S-7615 Pin 2
8S-7640 Stand 2
B 183-4797 Track Roller Lifting Fork 1
Note: There is a track guide on each side of the machine. The procedure which follows is for the
installation of the track roller with the track guide.
1. Make sure that all the mounting surfaces on the following components are clean and free of
debris before the following components are installed:
◦ Track Roller
◦ Track Guide
◦ Rock Guards
◦ Frame Rail
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Note: Make sure that the fill/drain plug in the track roller is facing toward the outside of the
undercarriage.
2. Use Tooling (B) and a suitable lifting device in order to position track roller (4) on the
undercarriage. The weight of track roller (4) is approximately 40 kg (88 lb). Install the bolts
that hold the track roller in position.
3. Use Tooling (B) and a suitable lifting device in order to position track guide (2) on the
undercarriage. Install the bolts that secure the guide in position.
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4. Install rock guards (4), if equipped.
5. Prior to lowering the machine to the ground and tightening the track, make sure that all of
the track rollers rotate smoothly by manually turning the track rollers.
6. Lift the machine off Tooling (A).
7. Remove Tooling (A) from the machine. Lower undercarriage (1) to the ground.
8. Tighten the tension of the track. Refer to Operation and Maintenance Manual, "Track
Adjustment - Adjust".
Mon Feb 10 14:07:29 UTC+0800 2020
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Product: EXCAVATOR
i05447509
Track - Separate
SMCS - 4170-076
Separation Procedure
Table 1
Required Tools
A 260-9412 Chain As 1
B 5P-6214 Track Block Assembly 1
C
350-7768 Electric Hydraulic Pump Gp (115V) 1
350-7769 Electric Hydraulic Pump Gp (230V) 1
8T-0820 Hydraulic Pressure Gauge 1
3B-7722 Pipe Bushing 2
1P-2376 Quick Connect Coupler 2
1P-2377 Plug As 2
6D-7726 Hose As 2
5P-2379 Track Press Tool Gp 1
8S-7172 Double Acting Cylinder 1
8S-9903 Track Press Rollover Gp 1
Note: Cleanliness is an important factor. Before the disassembly procedure, thoroughly clean the
exterior of the component. This action will help to prevent dirt from entering the internal
mechanism.
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1. Position the track so that the master pin is above the center line of the sprocket or idler.
2. Stop the machine and release the track tension. Refer to Operation and Maintenance
Manual, "Track - Adjust".
Note: In order to provide additional clearance for the removal of the master pin, remove
track shoe (2) on each side of master pin.
3. Use Tooling (A) to support track shoe (2). Remove bolts (1) and track shoe (2).
4. Remove cotter pin (3) from pin (4).
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5. In order to prevent the track from sliding off the roller frame, place Tooling (B) on opposite
ends of the track.
6. Remove pin (4) and carefully lower the track assembly to the ground.
Note: If the track does not separate, use Tooling (C) to remove the master pin. For further
information, refer to Special Instruction, SMHS6954, "Track Disassembly".
Mon Feb 10 14:08:25 UTC+0800 2020
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Product: EXCAVATOR
i07070474
Track - Connect
SMCS - 4170-077
Connection Procedure
Table 1
Required Tools
A 260-9412 Chain As 1
B 5P-6214 Track Block Assembly 1
C
350-7768 Electric Hydraulic Pump Gp 1
350-7769 Electric Hydraulic Pump Gp 1
8T-0820 Hydraulic Pressure Gauge 1
3B-7722 Pipe Bushing 2
1P-2376 Quick Connect Coupler 2
1P-2377 Plug As 2
6D-7726 Hose As 2
5P-2379 Track Press Tool Gp 1
8S-7172 Double Acting Cylinder 1
8S-9903 Track Press Rollover Gp 1
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1. Use Tooling (A) to raise the track into position.
2. Install pin (4) and cotter pin (3).
Note: If you cannot install pin (4) with a suitable hammer, use Tooling (C) to install pin (4).
3. Install track shoe (2) and bolts (1). Refer to Table 2 for the correct torque specification for
bolts (1).
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Table 2
Torque Table
Machine Model Torque Specification
313, 315, 320, 323, 324, 325, 326,
and 329(1)
400 ± 40 N·m (295 ± 30 lb ft) turn an additional
120° ± 5°
330 and 336(2) 700 ± 40 N·m (516 ± 30 lb ft) turn an additional
120° ± 5°
(1)
D series, D2 series, and E series
(2)
D series, D2 series, and E series
4. Remove Tooling (B) from both ends of the track assembly.
5. Adjust the track tension. Refer to Operation and Maintenance Manual, "Track Adjust".
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Product: EXCAVATOR
i04552524
Front Idler, Recoil Spring and Hydraulic Track Adjuster -
Remove
SMCS - 4157-011; 4158-011; 4159-011
Removal Procedure
Start By:
a. Separate the track assemblies. Refer to Disassembly and Assembly, "Track - Separate".
The spring of the recoil spring assembly is compressed under several
tons of force.
Do not attempt to compress or release the tension of the spring with the
nut on the end of the retaining rod.
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Damaged threads on the retaining rod or nut can cause the assembly to
come apart with force, resulting in injury or death.
1. Use a pry bar and move the front idler (1), the recoil spring, and the hydraulic track adjuster
partially out of the track roller frame. Attach a suitable lifting device to front idler (1), as
shown.
2. Once front idler (1), the recoil spring, and the hydraulic track adjuster (2) is partially out of
the track frame reposition the suitable lifting device in order to support the recoil spring, the
hydraulic track adjuster, and the front idler.
3. Slide the front idler, the recoil spring, and the hydraulic track adjuster (2) out of the track
roller frame as one unit. The weight of the unit is approximately 204 kg (450 lb).
4. Leave the suitable lifting device attached and turn the front idler, the recoil spring, and the
hydraulic track adjuster around 180 degrees.
5. Install the front idler partially into the track frame. The front idler, the recoil spring, and the
hydraulic track adjuster will be supported by the track frame.
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6. Reposition the suitable lifting device in order to support the recoil spring and the hydraulic
track adjuster (2).
7. Remove bolts (3) that hold the front idler to the recoil spring and the hydraulic track
adjuster together.
8. Separate recoil spring and the hydraulic track adjuster (2) from the front idler. The front
idler will be supported by the track frame.
9. The weight of the recoil spring and the hydraulic track adjuster as a unit is approximately
95 kg (210 lb).
10. Attach a suitable lifting device to the front idler (1), as shown.
11. Remove the front idler from the track roller frame. The weight of the front idler is
approximately 109 kg (240 lb).
Reference: Refer to Undercarriage Reconditioning Bulletin, SEBF8495, "Hydraulic Excavator
Idler Disassemble and Assembly" for the proper procedures.
Mon Feb 10 14:30:34 UTC+0800 2020
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Product: EXCAVATOR
i04552540
Front Idler, Recoil Spring and Hydraulic Track Adjuster -
Install
SMCS - 4157-012; 4158-012; 4159-012
1. Be sure that the mating surfaces on the front support for the recoil spring are clean and free
of dirt and debris prior to assembly. Be sure that the mating surfaces on the two bearings for
the front idler are clean and free of dirt and debris prior to assembly.
2. Attach a suitable lifting device to the front idler (1), as shown. Install the front idler in the
track roller frame. The weight of front idler is approximately 109 kg (240 lb).
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