Caterpillar Cat 420E BACKHOE LOADER (Prefix DAN) Service Repair Manual (DAN00001 and up).pdf

Service Repair Manual
Models
420E BACKHOE LOADER

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Product: BACKHOE LOADER
Model: 420E BACKHOE LOADER DAN
Configuration: 420E Backhoe Loader Parallel Lift DAN00001-UP (MACHINE) POWERED BY C4.4 Engine
Disassembly and Assembly
416E, 420E and 430E Backhoe Loaders Machine Systems
Media Number -UENR0232-00 Publication Date -01/03/2010 Date Updated -22/03/2010
i03007516
Lift Cylinder - Remove and Install
SMCS - 5102-010
Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 1P-1860 Retaining Ring Pliers As 1
B 1P-1863 Retaining Ring Pliers As 1
Start By:
A. Release the pressure in the hydraulic oil system. Refer to Disassembly and Assembly,
"Hydraulic System Pressure - Release".
Cylinders equipped with lock valves can remain pressurized for very
long periods of time, even with the hoses removed.
Failure to relieve pressure before removing a lock valve or
disassembling a cylinder can result in personal injury or death.
Ensure all pressure is relieved before removing a lock valve or
disassembling a cylinder.
NOTICE
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420E Backhoe Loader Parallel Lift DAN00001-UP (MACHINE) POWERED BY C4....
2019/9/24
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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.
Illustration 1 g01247267
1. Disconnect hose assemblies (1) and (2) .
2. Attach a suitable lifting device to lift cylinder (4). The weight of lift cylinder (4) is
approximately 57 kg (125 lb).
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3. Use Tooling (A) in order to remove retaining ring (6). Remove pin assembly (5) and lower the
rod end of lift cylinder (4). Use Tooling (B) in order to remove retaining ring (3). Remove
washer (7). Remove lift cylinder (4) .
Disassembly and Assembly Information
Table 2
Required Tools
C 1P-0510 Driver Gp 1
D 5P-0960 Grease Cartridge 1
E 4C-9507 Retaining Compound 1
F 9S-3263 Thread Lock Compound 1
G 125-0079 Hydraulic Cylinder Repair Stand Gp 1
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(1) Apply Tooling (E) to the bearing.
(2) Lubricate the seals with the fluid that is being sealed.
(3) (7) Use Tooling (C) for the removal of the bearings.
(4) Torque for the head ... 650 ± 50 N·m (480 ± 37 lb ft)
(5) Torque for the piston ... 875 ± 25 N·m (645 ± 18 lb ft)
(6) Apply Tooling (F) to the threads of setscrew. Torque for the setscrew ... 26 ± 2.5 N·m (18 ± 2 lb
ft)
Installation Procedure
Table 3
Required Tools
B 1P-1863 Retaining Ring Pliers As 1
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Note: Cleanliness is an important factor. Before assembly, all parts should be thoroughly cleaned in
cleaning fluid. Allow the parts to air dry. Wiping cloths or rags should not be used to dry parts. Lint
may be deposited on the parts which may cause later trouble. Inspect all parts. If any parts are worn
or damaged, use new parts for replacement.
1. Attach a suitable lifting device to lift cylinder (4). The weight of lift cylinder (4) is
2. Install the head end of lift cylinder (4). Install washer (7). Use Tooling (B) in order to install
retaining ring (3). Raise the rod end of lift cylinder (4) and install pin assembly (5). Use
Tooling (A) in order to install retaining ring (6).
3. Connect hose assemblies (1) and (2) .
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All Rights Reserved.
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Tue Sep 24 14:08:35 UTC+0800 2019
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i03007488
Lift Arms - Remove
SMCS - 6107-011; 6119-011
Removal Procedure
Table 1
Required Tools
A 1P-1860 Retaining Ring Pliers 1
B 1P-1863 Retaining Ring Pliers 1
C 1U-9200 Lever Puller Hoist 1
D 140-7742 Sleeve 2
E
1P-1831 Bearing Puller Adapter 1
FT-1410 Sleeve 1
4K-0684 Hard Washer 1
9U-5345 Nut 1
9U-5343 Puller Stud 1
3S-6224 Hydraulic Pump 1
6V-3160 Double Acting Cylinder 1
F 1P-1834 Bearing Puller Adapter 1
FT-1410 Sleeve 1
4K-0684 Hard Washer 1
9U-6833 Nut 1
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4C-9633 Puller Stud 1
3S-6224 Hydraulic Pump 1
6V-3160 Double Acting Cylinder 1
Start By:
A. Remove the tilt cylinder. Refer to Disassembly and Assembly, "Tilt Cylinder - Remove and
Install".
B. Remove the bucket. Refer to Disassembly and Assembly, "Bucket - Remove and Install".
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.
1. Place suitable cribbing under the front of lift arms (1) .
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2. Attach a suitable lifting device to the rod end of lift cylinder (4). The weight of lift cylinder
(4) is approximately 57 kg (125 lb). Use Tooling (A) in order to remove retaining ring (2)
(not shown). Remove pin assembly (3). Use the suitable lifting device in order to lower the
rod end of lift cylinder (4) away from lift arms (1). Repeat for the other side.
3. Disconnect hose assemblies (5) and (6) from each side of the machine. Cut all cable straps
(7) that secure harness assembly (8) for the bucket positioner. Place harness assembly (8) to
the side.
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4. Attach Tooling (C), Tooling (D), and a suitable lifting device to lift arms (1). The weight of
lift arms (1) is approximately 408 kg (900 lb).
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5. Use Tooling (B) in order to remove retaining ring (9). Remove pin (10). Remove lift arms
(1) .
Note: Note the number and the location of the shims for assembly purposes.
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6. Use Tooling (E) in order to remove bearings (11) .
7. Use Tooling (F) in order to remove bearings (12) .
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8. Remove bearings (13) .
Tue Sep 24 14:09:23 UTC+0800 2019
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i03007492
Lift Arms - Install
SMCS - 6107-012; 6119-012
Table 1
Required Tools
B 1P-1863 Retaining Ring Pliers 1
C 1U-9200 Lever Puller Hoist 1
D 140-7742 Sleeve 2
E 1P-0520 Driver Gp 1
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1. Lower the temperature of bearings (13). Use Tooling (E) in order to install bearings (13) .
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4. Attach Tooling (C), Tooling (D), and a suitable lifting device to lift arms (1). The weight of
lift arms (1) is approximately 408 kg (900 lb).
5. Install lift arms (1). Install shims between lift arms (1) and the machine in order to obtain a
maximum total clearance of 1.0 mm (0.04 inch).
Note: Lift arms (1) must be centered on the machine in order to be within 3.0 mm (0.12
inch) from one side to the other side.
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6. Install any shims that were present during the removal procedure. Install pin (10). Install
shims between lift arms (1) and the machine in order to obtain a maximum total clearance of
1.0 mm (0.04 inch). Use Tooling (B) in order to install retaining ring (9) .
7. Position harness assembly (8) and install all cable straps (7) that secure harness assembly
(8) for the bucket positioner. Connect hose assemblies (5) and (6) to each side of the
machine.
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8. Attach a suitable lifting device to the rod end of lift cylinder (4). The weight of lift cylinder
(4) is approximately 57 kg (125 lb). Raise the rod end of lift cylinder (4) into position.
Install pin assembly (3). Use Tooling (A) in order to install retaining ring (2). Repeat for the
other side of lift arms (1) .
End By:
a. Install the bucket. Refer to Disassembly and Assembly, "Bucket - Remove and Install".
b. Install the tilt cylinder. Refer to Disassembly and Assembly, "Tilt Cylinder - Remove and
Install".
Tue Sep 24 14:10:11 UTC+0800 2019
5/5
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i02499757
Hoe Bucket - Remove and Install
SMCS - 6503-010
Removal Procedure
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. Place the hoe bucket on the ground.
2. Release the pressure in the hydraulic oil system. Refer to Disassembly and Assembly,
3. Remove cotter pins (1) and (4). Remove spacers (2) and (5). Remove pins (3) and (6). Raise
the stick off hoe bucket (7). Remove hoe bucket (7). The weight of hoe bucket (7) is
Note: The weight of the hoe bucket may vary depending on the configuration.
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1. Position hoe bucket (7). The weight of hoe bucket (7) is approximately 148 kg (325 lb).
Lower the stick onto hoe bucket (7). Install pins (3) and (6). Install spacers (2) and (5).
Install cotter pins (1) and (4).
Tue Sep 24 14:10:58 UTC+0800 2019
2/2
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i03046303
Quick Coupler - Remove and Install
SMCS - 6129-010
Removal Procedure
Start By:
a. Remove the backhoe bucket. Refer to Disassembly and Assembly, "Hoe Bucket - Remove
and Install".
1. Position quick coupler (1) level on the ground.
2. Remove cotter pin (2) and remove pin (3).
3. Remove cotter pin (4) and remove pin (5).
4. Raise the boom in order to remove quick coupler (1).
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1. Lower the boom into position on quick coupler (1).
2. Install pin (5) and install cotter pin (4).
3. Install pin (3) and install cotter pin (2).
End By:
a. Install the backhoe bucket. Refer to Disassembly and Assembly, "Hoe Bucket - Remove and
Install".
Tue Sep 24 14:11:46 UTC+0800 2019
2/2
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i03007158
Backhoe Bucket Linkage - Remove and Install
SMCS - 6513-010
Removal Procedure
Table 1
Required Tools
B 1P-0510 Driver Gp 1
Start By:
A. Remove the hoe bucket. Refer to Disassembly and Assembly, "Hoe Bucket - Remove and
Install".
1. Place the stick on the ground.
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2. Attach a suitable lifting device to link assembly (4). The weight of link assembly (4) is
approximately 25 kg (55 lb). Use Tooling (A) in order to remove retaining ring (1). Remove
shims (2). Remove pin (3) .
3. Remove bearings (5) and (6) from both sides of link assembly (4) .
4. Use Tooling (A) in order to remove retaining rings (7) and (10). Remove shims (8) and (11).
Remove link assembly (9) .
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5. Use Tooling (B) in order to remove bearings (12) and (13) from link assembly (9) .
6. Remove pins (14) and (16). Remove link assembly (15) .
7. Use Tooling (B) in order to remove bearings (17) and (18) from link assembly (15) .
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Table 2
Required Tools
B 1P-0510 Driver Gp 1
1. Lower the temperature of bearings (17) and (18). Use Tooling (B) in order to install
bearings (17) and (18) into link assembly (15) .
Note: Make sure that bearings (17) and (18) are flush with Surface (X) during the
installation process.
2. Install link assembly (15). Install pins (14) and (16) and any shims that were present during
the removal procedure.
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Note: Note that one shim is required on each side.
3. Lower the temperature of bearings (12) and (13). Use Tooling (B) in order to install
bearings (12) and (13) into link assembly (9) .
Note: Make sure that bearings (12) and (13) are flush with Surface (Y) during the
installation process.
4. Install link assembly (9). Install shims (8) and shims (11) in order to obtain a maximum
total clearance of 4.0 mm (0.16 inch). Use Tooling (A) in order to install retaining rings (7)
and (10) .
Note: Note that one shim (8) and (11) is required on each side.
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5. Lower the temperature of bearings (5) and (6). Use Tooling (B) in order to install bearings
(5) and (6) into both sides of link assembly (4) .
Note: Make sure that bearings (5) and (6) are flush with Surface (Z) during the installation
process.
6. Attach a suitable lifting device to link assembly (4). The weight of link assembly (4) is
approximately 25 kg (55 lb). Install link assembly (4). Install shims (2) and pin (3). Use
Tooling (A) in order to install retaining ring (1) .
End By: Install the hoe bucket. Refer to Disassembly and Assembly, "Hoe Bucket - Remove and
Install".
Tue Sep 24 14:12:34 UTC+0800 2019
6/6
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i03025382
Backhoe Bucket Cylinder - Remove and Install
SMCS - 5457-010-UH
Removal Procedure
Table 1
Required Tools
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.
1/6
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1. Place the stick on the ground. Lower the hoe bucket to the ground.
2. Release the pressure in the hydraulic oil system. Refer to Disassembly and Assembly,
3. Disconnect hose assemblies (1) and (4). Disconnect clamps (2) and (3) .
4. Disconnect harness assembly (5) .
2/6
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Caterpillar Cat 420E BACKHOE LOADER (Prefix DAN) Service Repair Manual (DAN00001 and up).pdf

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