Caterpillar Cat 420F BACKHOE LOADER (Prefix SKR) Service Repair Manual Instant Download.pdf

Service Repair Manual
Model
420F BACKHOE LOADER

Shutdown SIS
Previous Screen
Product: BACKHOE LOADER
Model: 420F BACKHOE LOADER SKR
Configuration: 420F Backhoe Loader SKR00001-UP (MACHINE) POWERED BY C4.4 Engine
Disassembly and Assembly
416F, 420F and 430F Backhoe Loaders Machine Systems
Media Number -UENR2321-04 Publication Date -01/01/2014 Date Updated -03/11/2016
i04779487
Boom - Remove and Install
SMCS - 6501-010
Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 1U-9200 Lever Puller Hoist 1
B
9S-5565 Pin Puller Sleeve As 1
4K-0684 Hard Washer 1
4C-9634 Puller Stud 1
6V-3175 Double Acting Cylinder 1
9U-6832 Nut 1
1P-1835 Bearing Puller Adapter 1
350-7768 Electric Hydraulic Pump Gp (115V) 1
350-7769 Electric Hydraulic Pump Gp (230V0 1
C 6V-3175 Double Acting Cylinder 1
9U-6833 Nut 1
126-8928 Hard Washer 1
5P-4776 Puller Stud 1
9S-5565 Pin Puller Sleeve As 1
1/12
420F Backhoe Loader SKR00001-UP (MACHINE) POWERED BY C4.4 Engine(SEB...
2019/9/15
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis...

350-7769 Electric Hydraulic Pump Gp (230V0 1
Start By:
a. Remove the stick.
b. Remove the stick cylinder
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.
When you are using hydraulic cylinders and puller studs, always ensure
that the rated capacity of the puller stud meets or exceeds the rated
capacity of the hydraulic cylinder. If the puller stud does not meet or
exceed the rated capacity of the hydraulic cylinder, a sudden failure of
the puller stud could occur. The sudden failure of the puller stud could
result in personal injury or death.
Personal injury can result from hydraulic oil pressure and hot oil.
Hydraulic oil pressure can remain in the hydraulic system after the
engine has been stopped. Serious injury can be caused if this pressure is
not released before any service is done on the hydraulic system.
Make sure all of the work tools have been lowered to the ground, and
the oil is cool before removing any components or lines. Remove the oil
filler cap only when the engine is stopped, and the filler cap is cool
enough to touch with your bare hand.
2/12
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Illustration 1 g02887578
1. Disconnect harness assembly (1). Disconnect clamp (2). Disconnect hose assemblies (3) and
(4).
2. Remove pin (6). Place right-hand hook (5) to the side.
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3. Remove clamp (7) (not shown). Loosen nut (8). Remove pin (9) and hook (11). Remove
bolt (10).
4. Attach a suitable lifting device to boom cylinder (13). The weight of boom cylinder (13) is
approximately 115 kg (255 lb). Remove pin (14). Remove pin (12). Remove boom cylinder
(13).
5. Disconnect hose assemblies (15) that are routed to the boom.
4/12
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6. Remove cable strap (17). Disconnect harness assembly (16) that is routed to the boom.
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7. Install pin (14) and shims (19). Install retaining ring (18). Install pin assembly (21) (not
shown). Install bracket (20) in order to secure pin assembly (21).
8. Attach Tooling (A) and a suitable lifting device to boom (22). The weight of boom (22) is
approximately 455 kg (1000 lb).
9. Remove bolt (23) and pin (24). Repeat for the other side.
10. Remove boom (22).
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11. Use Tooling (B) in order to remove bearings (25) and (26).
12. Use Tooling (C) in order to remove bearings (27) and (28).
Installation Procedure
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1. Lower the temperature of bearings (28) and (27). Use Tooling (C) in order to install
bearings (27) and (28).
2. Lower the temperature of bearings (25) and (26). Use Tooling (B) in order to install
bearings (25) and (26).
8/12
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3. Attach Tooling (A) and a suitable lifting device to boom (22). The weight of boom (22) is
approximately 455 kg (1000 lb). Install boom (22).
4. Install pin (24) and bolt (23). Repeat for the other side.
5. Connect harness assembly (16). Install cable strap (17).
9/12
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6. Connect hose assemblies (15).
7. Remove retaining ring (18). Remove pin (14) and shims (19).
Note: Pin (14) was used in the installation of the boom.
10/12
420F Backhoe Loader SKR00001-UP (MACHINE) POWERED BY C4.4 Engine(S...
2019/9/15

8. Attach a suitable lifting device to boom cylinder (13). The weight of boom cylinder (13) is
approximately 115 kg (255 lb). Install boom cylinder (13). Install pin (12). Install pin (14)
into one side of boom cylinder (13).
Note: Pin (14) will be fully installed when the stick cylinder is installed.
9. Install bolt (10). Install hook (11) and pin (9). Tighten nut (8). Install clamp (7) (not shown).
10. Position hook (5). Install pin (6).
11/12
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11. Connect hose assemblies (3) and (4). Connect clamp (2). Connect harness assembly (1).
End By:
a. Install the stick cylinder.
b. Install the stick.
Copyright 1993 - 2019 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Sun Sep 15 22:06:26 UTC+0800 2019
12/12
2019/9/15

Shutdown SIS
Previous Screen
i05636889
Swing Cylinder - Remove and Install
SMCS - 5105-010
Removal Procedure
1/7
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1. Loosen bolts (1) on right side of the bracket.
2. Position the backhoe to the side, as shown.
3. Release the pressure in the hydraulic oil system.
4. Disconnect hose assemblies (2) from the head end of the swing cylinder. Repeat for the other
swing cylinder.
2/7
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5. Disconnect hose assemblies (3) . Repeat for the other swing cylinder.
6. Remove the retaining ring and pin (4) . Remove bolts (5) , bolts (1) , and support (6) .
3/7
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7. Attach a suitable lifting device to swing cylinder (7) . The weight of swing cylinder (7) is
approximately 38 kg (85 lb). Remove swing cylinder (7) . Remove any shims that may be
present. Repeat for the other side.
Disassembly and Assembly Information
Table 1
Required Tools
A
6V-2098 Press Sleeve 1
4K-0684 Hard Washer 1
9U-6833 Nut 1
350-7769 Electric Hydraulic Pump Gp (230V)
B Bearing Mount Compound 1
C 152-4249 Hydraulic Cylinder Repair Stand Gp 1
D - Grease -
E
9U-7868 Spanner Wrench 1
127-8064 Adapter Plate Gp 1
130-1810 Pin Gp 1
4/7
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When you are using hydraulic cylinders and puller studs, always ensure
that the rated capacity of the puller stud meets or exceeds the rated
capacity of the hydraulic cylinder. If the puller stud does not meet or
exceed the rated capacity of the hydraulic cylinder, a sudden failure of
the puller stud could occur. The sudden failure of the puller stud could
result in personal injury or death.
Tooling (A) is used for the removal of bearing (2) .
(4) Before installation, apply Tooling (D) to the threads. Use Tooling (C) to tighten piston (4) .
Tighten piston (4) to a torque of 1375 ± 25 N·m (1014 ± 18 lb ft). Tighten setscrew (1) to a torque of
23 ± 3 N·m (204 ± 27 lb in)
(5) Before assembly, apply Tooling (D) to the wiper seal groove. Apply Tooling (B) to the flange.
(6) Before assembly, lubricate the sealing lip with the fluid that is being sealed.
(3) Before assembly, lubricate the threads with Tooling (D) . Use Tooling (C) and Tooling (E) to
tighten head (3) . Tighten head (3) to a torque of 775 ± 25 N·m (572 ± 18 lb ft).
Installation Procedure
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Note: There should be no grease applied to the cylinder body to frame joint. The joint is a non-
lubricated joint that has impregnated bearings installed.
1. Attach a suitable lifting device to swing cylinder (7) . The weight of swing cylinder (7) is
approximately 38 kg (85 lb). Install swing cylinder (7) and any shims that were present during
the removal procedure.
2. Install bracket (6) , bolts (5) , and bolts (1) . Tighten bolts (5) and bolts (1) to a torque of 800 ±
100 N·m (590 ± 74 lb ft). Install pin (4) and the retaining ring.
6/7
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3. Connect hose assemblies (3) . Repeat for the other swing cylinder.
4. Connect hose assemblies (2) from the head end of the swing cylinder. Repeat for the other
swing cylinder.
Copyright 1993 - 2019 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Sun Sep 15 22:07:14 UTC+0800 2019
7/7
2019/9/15

Suggest:
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Please download this document
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to download the complete manual.
Thank you so much for reading

Shutdown SIS
Previous Screen
i04758712
Swing Frame - Remove
SMCS - 6506-011
Removal Procedure
Table 1
Required Tools
A 5P-5197 Retaining Ring Pliers As 1
B 140-7742 Sleeve 2
C 1U-9204 Lever Puller Hoist 1
D - Chain 1
E
9U-6833 Nut 1
8T-5361 Hard Washer 1
6V-2098 Receiving Sleeve 1
F 350-7768 Electric Hydraulic Pump Gp (115V) 1
1/9
2019/9/15

Caterpillar Cat 420F BACKHOE LOADER (Prefix SKR) Service Repair Manual Instant Download.pdf

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Caterpillar Cat 420F BACKHOE LOADER (Prefix SKR) Service Repair Manual Instant Download.pdf