Caterpillar Cat 320D2L Excavator (Prefix EKT) Service Repair Manual Instant Download.pdf

Service Repair Manual
Models
320D2L Excavator

Shutdown SIS
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Product: EXCAVATOR
Model: 320D2 L EXCAVATOR EKT
Configuration: 320D2 & 320D2 L Excavators EKT00001-UP (MACHINE) POWERED BY C7.1 Engine
Disassembly and Assembly
323D2 Excavator Machine Systems
Media Number -UENR3338-02 Publication Date -01/07/2017 Date Updated -19/07/2017
i07177301
Sprocket - Remove and Install
SMCS - 4164-010
Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 439-3940 Link Bracket 1
Illustration 1 g01208414
1. Position the machine onto suitable cribbing below the first roller, as shown. Ensure that the
master pin is above the center line of the sprocket.
2. Separate the track. Refer to Disassembly and Assembly, "Track - Separate".
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3. Remove bolts (1) that hold sprocket (2) to the final drive housing.
Note: Use several washers between Tooling (A) and sprocket (2) thus preventing damage to
the sprocket.
4. Attach Tooling (A) and a suitable lifting device to sprocket (2), as shown.
5. Remove sprocket (2). The weight of sprocket (2) is approximately 40 kg (90 lb).
Installation Procedure
Table 2
Required Tools
A 439-3940 Link Bracket 1
B - Loctite 243 -
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Note: Use several washers between Tooling (A) and sprocket (2) thus preventing damage to
the sprocket.
1. Attach Tooling (A) to sprocket (2), as shown. The weight of sprocket (2) is approximately
40 kg (90 lb).
2. Position sprocket (2) onto the final drive.
Note: Mounting surface of final drive housing and sprocket must be clean and free of paint
and protective coating prior to assembly.
3. Apply Tooling (B) to the threads of bolts (1) Install and tighten bolts (1) in an alternating
sequence to the torque specified in Table 3.
Table 3
Tightening Specifications
Bolt Size Torque
M20 (For field rework) 520 ± 70 N·m (384 ± 52 lb ft)
M20 (For new
application)
150 ± 15 N·m (111 ± 11 lb ft) and turn an additional angle of
35 ± 5 degrees.
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M24 (For field rework) 900 ± 100 N·m (664 ± 74 lb ft)
M24 (For new
application)
250 ± 25 N·m (184 ± 18 lb ft) and Turn 35 degrees.
4. Refer to Service Magazine, M0083843, "An Improvement Bolt Tightening Procedure for
the Critical Joints Is Now Used on All Excavators" for more detail information.
5. Remove Tooling (A).
6. Connect the Track.
7. Remove the cribbing from the front roller.
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All Rights Reserved.
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Tue Mar 3 16:42:23 UTC+0800 2020
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Product: EXCAVATOR
i02602078
Counterbalance Valve (Travel) - Remove
SMCS - 5111; 5811-011-KV
Removal Procedure
Start By:
a. Release the hydraulic system pressure. Refer to Disassembly and Assembly , " Hydraulic
System Pressure - Release".
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, "Caterpillar Dealer Service
Tool Catalog" for tools and supplies suitable to collect and contain
fluids on Caterpillar products.
Dispose of all fluids according to local regulations and mandates.
NOTICE
Keep all parts clean from contaminants.
Contamination of the hydraulic system with foreign material will
reduce the service life of the hydraulic system components.
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To prevent contaminants from entering the hydraulic system, always
plug or cap the lines, fittings, or hoses as they are disconnected. Cover
any disassembled components and clean them properly before
assembly.
Clean the hydraulic system properly after any major component
exchange or especially after a component failure, to remove any
contamination.
At operating temperature, the hydraulic oil is hot and under pressure.
Hot oils can cause burns.
To prevent possible personal injury, release the pressure in the work
tool hydraulic circuit (boom, stick, bucket, and swing), travel circuits,
and the hydraulic oil tank at the filler cap before any hydraulic lines or
components are disconnected or removed.
Remove the filler cap only when the engine is stopped and the filler cap
is cool enough to touch.
Note: Put identification marks on all lines, on all hoses, on all wires, and on all tubes for
installation purposes. Plug all lines, hoses, and tubes. This helps to prevent fluid loss and this
helps to keep contaminants from entering the system.
1. Remove bolts (1) and remove travel motor guard (2).
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2. Disconnect hose assemblies (3) and (4).
3. Remove bolts (5) and counterbalance valve (6).
4. Remove O-ring seals (7) and (8).
Tue Mar 3 16:43:19 UTC+0800 2020
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Product: EXCAVATOR
i02616589
Counterbalance Valve (Travel) - Disassemble
SMCS - 5111; 5811-015-KV
Disassembly Procedure
Table 1
Required Tools
A 6V-8336 Bolt (M12×1.75×70mm) 2
Start By:
a. Remove the counterbalance valve. Refer to Disassembly and Assembly, "Counterbalance
Valve (Travel) - Remove".
NOTICE
assembly.
contamination.
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Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the
component should be thoroughly cleaned. This will help to prevent dirt from entering the internal
mechanism.
1. Remove plugs (1) and O-ring seals (2) from the counterbalance valve (3).
2. Remove relief valves (4) from counterbalance valve (3).
a. Disassemble relief valves (4) in the following manner:
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Personal injury can result from parts and/or covers under spring
pressure.
Spring force will be released when covers are removed.
Be prepared to hold spring loaded covers as the bolts are loosened.
b. Remove backup rings (5) and O-ring seal (6).
c. Remove O-ring seal (7) from the relief valve.
d. Remove nut (9).
e. Remove screw (10) and stop (14) from body (8).
f. Remove backup ring (11) and O-ring seal (12) from stop (14).
g. Remove piston (13) from body (8).
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h. Remove backup rings (11) and O-ring seal (12) from piston (13).
3. Repeat Steps 2.a through 2.h for the remaining relief valve.
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.
4. Remove bolts (16). Install Tooling (A ) into the bolts evenly in order to relieve spring
pressure. Remove bolts (16) and Tooling (A). Remove cover (17) from the block.
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5. Remove sleeve (18), spring (19), and spacer (20) from counterbalance valve (3).
Note: The grooved side of spacer (20) faces spring (19).
6. Repeat 4 and 5 for the remaining cover.
7. Remove spool (21) from the counterbalance valve.
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Product: EXCAVATOR
i02728771
Counterbalance Valve (Travel) - Assemble
SMCS - 5111; 5811-016-KV
Assembly Procedure
Note: Cleanliness is an important factor. Before assembly, all parts should be thoroughly cleaned.
Inspect all parts. If any parts are worn or damaged, use new parts for replacement. Prior to
installation, lubricate all seals with clean oil.
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Note: The grooved side of spacer (19) faces spring (21).
1. Install spool (20) into counterbalance valve (3). Install spacer (19) onto spool (20).
2. Install spring (21) and sleeve (22).
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.
3. Position cover (18) and install bolts (17). Tighten bolts (17) to a torque of 79 ± 8 N·m
(58 ± 6 lb ft).
4. Repeat Steps 1 through 3 for the remaining cover.
5. Assemble the relief valves in the following manner:
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a. Install O-ring seal (7) and backup rings (6) onto piston (5).
b. Install piston (5) into body (14).
c. Install O-ring seal (9) and backup ring (8) onto stop (10).
d. Install stop (10) and screw (15) into body (14).
e. Install nut (16). Tighten nut (16) to a torque of 92 ± 8 N·m (68 ± 6 lb ft).
f. Install O-ring seal (13) onto body (14).
g. Install O-ring seal (12) and backup rings (11).
h. Repeat Steps 5.a through 5.g for the remaining relief valve.
6. Install relief valves (4) into counterbalance valve (3). Tighten relief valves (4) to a torque of
540 ± 50 N·m (398 ± 37 lb ft).
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7. Install O-ring seals (2) onto plugs (1). Install plugs (1) into counterbalance valve (3).
Tighten plugs (1) to a torque of 31 ± 3 N·m (23 ± 2 lb ft).
End By:
a. Install the counterbalance valve. Refer to Disassembly and Assembly, "Counterbalance
Valve (Travel) - Install".
Tue Mar 3 16:45:11 UTC+0800 2020
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Product: EXCAVATOR
i02602092
Counterbalance Valve (Travel) - Install
SMCS - 5111; 5811-012-KV
Installation Procedure
NOTICE
containing fluids.
Note: Check the O-ring seals, the gaskets, and the seals for wear or for damage. Replace the
components, if necessary.
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1. Install O-ring seal (8) and (7).
2. Position counterbalance valve (6) on the travel motor. Install bolts (5). Tighten bolts (5) to a
torque of 80 ± 8 N·m (59 ± 6 lb ft).
3. Install hose assemblies (4) and (3).
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4. Check the hydraulic oil level. Refer to Operation and Maintenance Manual, "Hyrdaulic
System Oil Level - Check" for the correct filling procedure.
5. Position travel motor guard (2) on the machine.
6. Install bolts (1). Tighten bolts (1) to a torque of 130 ± 10 N·m (96 ± 7 lb ft).
Tue Mar 3 16:46:06 UTC+0800 2020
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Product: EXCAVATOR
i03524303
Travel Motor - Remove
SMCS - 4351-011
Removal Procedure
Table 1
Required Tools
A 9U-7692 Threaded RodM16x381 mm 15 inch 2
Start By:
A. Remove the counterbalance valve. Refer to Disassembly and Assembly, "Counterbalance
Valve (Travel) - Remove".
NOTICE
containing fluids.
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NOTICE
assembly.
contamination.
1. Drain the oil from the final drive into a suitable container for storage or disposal.
2. Disconnect hose assemblies (1) and (3) . Remove two bolts (2) .
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3. Install Tooling (A) in the place of bolts (2) .
4. Remove remaining bolt (2A) that secures travel motor (4) to the final drive.
5. Attach a suitable lifting device to travel motor (4) . The weight of travel motor (4) is
approximately 57 kg (125 lb). Carefully pull travel motor (4) out of the final drive.
6. Remove O-ring seal (5) from the travel motor.
Tue Mar 3 16:47:02 UTC+0800 2020
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Product: EXCAVATOR
i01219550
Travel Motor - Disassemble
SMCS - 4351-015
Disassembly Procedure
Start By:
a. Remove the travel motor.
Reference: Refer to Disassembly and Assembly, "Travel Motor - Remove" in this manual.
NOTICE
containing fluids.
1. Thoroughly clean the outside of the travel motor prior to disassembly.
2. Fasten the travel motor to a suitable holding fixture in a vertical position. The weight of the
travel motor is 60 kg (132 lb).
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3. Put an alignment mark across the head and the body of the travel motor for assembly
purposes. The head must be reinstalled in the head's original position on the body of the
travel motor.
Note: During the removal of head (2) from the body of the travel motor, be careful not to
scratch or damage the mating surfaces of the components.
4. Remove socket head bolts (1).
5. Remove head (2) from the body of the travel motor.
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Caterpillar Cat 320D2L Excavator (Prefix EKT) Service Repair Manual Instant Download.pdf

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Caterpillar Cat 320D2L Excavator (Prefix EKT) Service Repair Manual Instant Download.pdf