Caterpillar Cat 424B Backhoe Loader (Prefix JRC) Service Repair Manual (JRC05546 and up)

Service Repair Manual

Models

424B Backhoe Loader

424B Backhoe Loader JRC05546-UP (MACHINE)(SEBP5627 - 13) - Documentation

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Shutdown SIS Previous Screen Product: BACKHOE LOADER Model: 424B BACKHOE LOADER JRC Configuration: 424B Backhoe Loader JRC05546-UP (MACHINE)

Disassembly and Assembly 424B and 424B HD Backhoe Loaders Engine Supplement Media Number -UENR2398-02

Publication Date -01/07/2014

Date Updated -02/07/2014

i05120829

System Pressure - Release SMCS - 3000-553-PX; 4250-553-PX; 4300-553-PX; 5050-553-PX; 6700-553-PX

Release Procedure 1. Park on a level surface. If you must park on a grade, chock the machine.

2. Apply the service brake in order to stop the machine. Move the transmission control lever to the NEUTRAL position.

3. Move the speed control lever to the LOW IDLE position.

4. Engage the parking brake.

5. Engage the transmission neutral lock.

6. Lower all attachments to the ground.

7. Stop the engine.

8. Turn the engine start switch key to OFF position for 4 seconds.

9. Turn the engine start switch key back to ON position.

10. Press the clamp cylinder switch to the ON position.

11. Operate all hydraulic controls through all positions in order to relieve hydraulic pressure.

Repeat this step until all hydraulic pressure is released.

12. Move the hydraulic control levers to the HOLD position.

13. Turn the engine start switch to OFF position and remove the key.

Copyright 1993 - 2019 Caterpillar Inc.

Mon Dec 2 15:08:28 UTC+0800 2019

All Rights Reserved.

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424B Backhoe Loader JRC05546-UP (MACHINE)(SEBP5627 - 13) - Documentation

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Shutdown SIS Previous Screen Product: BACKHOE LOADER Model: 424B BACKHOE LOADER JRC Configuration: 424B Backhoe Loader JRC05546-UP (MACHINE)

Disassembly and Assembly 424B and 424B HD Backhoe Loaders Engine Supplement Media Number -UENR2398-02

Publication Date -01/07/2014

Date Updated -02/07/2014

i05818303

Hood - Remove and Install SMCS - 7251-010 S/N - JRC5546-7809

Removal Procedure Start By: A. Remove the side panel.

Illustration 1

g03109256

1. Open hood (2) and remove four bolts (1) . Remove left side of hood (2) and air precleaner (3) .

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424B Backhoe Loader JRC05546-UP (MACHINE)(SEBP5627 - 13) - Documentation

Illustration 2

g03109276

2. Remove bolts (4) from the front right side of the hood.

Illustration 3

g03685147

3. Remove bolts (6) from hood (5) .

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424B Backhoe Loader JRC05546-UP (MACHINE)(SEBP5627 - 13) - Documentation

Illustration 4

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g03685148

4. Remove bolts and nuts (7) and hood (5) .

Illustration 5

g03685150

5. Remove four bolts (9) on both sides. Remove the hood support assembly (8) .

Installation Procedure 1. Install hood (5) in the reverse order of removal procedure.

Mon Dec 2 15:09:24 UTC+0800 2019

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424B Backhoe Loader JRC05546-UP (MACHINE)(SEBP5627 - 13) - Documentation

Copyright 1993 - 2019 Caterpillar Inc. All Rights Reserved.

Private Network For SIS Licensees.

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424B Backhoe Loader JRC05546-UP (MACHINE)(SEBP5627 - 13) - Documentation

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Shutdown SIS Previous Screen Product: BACKHOE LOADER Model: 424B BACKHOE LOADER JRC Configuration: 424B Backhoe Loader JRC05546-UP (MACHINE)

Disassembly and Assembly 424B and 424B HD Backhoe Loaders Engine Supplement Media Number -UENR2398-02

Publication Date -01/07/2014

Date Updated -02/07/2014

i05120832

Side Panel - Remove and Install SMCS - 726A S/N - JRC5546-7809

Removal Procedure Start By: A. Release the pressure in the hydraulic system.

Illustration 1

g03111296

1. Remove four bolts (2) and right side engine cover (1) .

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424B Backhoe Loader JRC05546-UP (MACHINE)(SEBP5627 - 13) - Documentation

Illustration 2

g03111297

2. Remove four bolts (3) and left side engine cover (4) .

Illustration 3

g03111298

3. Remove four bolts (6) and two supports (8). Remove bolt (5) and grill (7) .

Installation Procedure

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424B Backhoe Loader JRC05546-UP (MACHINE)(SEBP5627 - 13) - Documentation

Illustration 4

g03111301

1. Install grill (7) and bolt (5). Install two supports (8) and four bolts (6) .

Illustration 5

g03111302

2. Install left side engine panel (4) and four bolts (3) .

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424B Backhoe Loader JRC05546-UP (MACHINE)(SEBP5627 - 13) - Documentation

Illustration 6

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g03111303

3. Install right side engine panel (1) and four bolts (2) .

Copyright 1993 - 2019 Caterpillar Inc.

Mon Dec 2 15:10:20 UTC+0800 2019

All Rights Reserved.

Private Network For SIS Licensees.

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2019/12/2

424B Backhoe Loader JRC05546-UP (MACHINE)(SEBP5627 - 13) - Documentation

1/2

Shutdown SIS Previous Screen Product: BACKHOE LOADER Model: 424B BACKHOE LOADER JRC Configuration: 424B Backhoe Loader JRC05546-UP (MACHINE)

Disassembly and Assembly 424B and 424B HD Backhoe Loaders Engine Supplement Media Number -UENR2398-02

Publication Date -01/07/2014

Date Updated -02/07/2014

i05770033

Battery - Remove and Install SMCS - 1401-010

Removal Procedure

Personal injury can result from failure to disconnect the battery.

First, disconnect the negative battery cable. Then, disconnect the positive battery cable.

A positive power lead can cause sparks if the battery is not disconnected. Sparks can possibly result in battery explosion or fire.

1. Turn the key for the battery disconnect switch to the OFF position. Remove the key.

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424B Backhoe Loader JRC05546-UP (MACHINE)(SEBP5627 - 13) - Documentation

Illustration 1

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g03660719

1. Remove the upper cover (1) to access the battery. Remove bolts (2) and open front cover (3).

Illustration 2

g03660726

2. Disconnect negative cable assembly (5). Disconnect positive cable assembly (4).

Illustration 3

g03660727

3. Remove nuts (6) and loosen nuts (8). Remove studs (7).

4. Use two people to remove battery (9). The weight of battery (9) is approximately 44 kg (97 lb). Remove battery (9) through front access door (3).

Installation Procedure 1. Install battery (9) in the reverse order of removal procedure. a. Tighten positive cable assembly (4) and negative cable assembly (5) to a torque of 7.5 ± 0.5 N·m (66.4 ± 4.4 lb in).

Copyright 1993 - 2019 Caterpillar Inc.

Mon Dec 2 15:11:15 UTC+0800 2019

All Rights Reserved.

Private Network For SIS Licensees.

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2019/12/2

424B Backhoe Loader JRC05546-UP (MACHINE)(SEBP5627 - 13) - Documentation

1/3

Shutdown SIS Previous Screen Product: BACKHOE LOADER Model: 424B BACKHOE LOADER JRC Configuration: 424B Backhoe Loader JRC05546-UP (MACHINE)

Disassembly and Assembly 424B and 424B HD Backhoe Loaders Engine Supplement Media Number -UENR2398-02

Publication Date -01/07/2014

Date Updated -02/07/2014

i05755753

Muffler - Remove and Install SMCS - 1062-010

Removal procedure

Illustration 1

g03674122

1. Turn knob (1) in counterclockwise and pull back to open the engine access door (2).

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424B Backhoe Loader JRC05546-UP (MACHINE)(SEBP5627 - 13) - Documentation

Illustration 2

g03674123

2. Position door (2) with rod (3).

Illustration 3

g03674090

3. Loosen clamp nuts (5) and remove exhaust pipe (4).

Illustration 4

g03674092

4. Remove nuts (7) and (8). Remove muffler (6).

Installation Procedure 1. Install muffler (6) in the reverse order of removal procedure.

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424B Backhoe Loader JRC05546-UP (MACHINE)(SEBP5627 - 13) - Documentation

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a. Tighten nuts (8) to a torque of 13.5 ± 1.5 N·m (119.4 ± 13 lb in). b. Tighten clamp nuts (5) to a torque of 24 ± 1 N·m (212 ± 9 lb in).

Copyright 1993 - 2019 Caterpillar Inc.

Mon Dec 2 15:12:11 UTC+0800 2019

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424B Backhoe Loader JRC05546-UP (MACHINE)(SEBP5627 - 13) - Documentation

1/2

Shutdown SIS Previous Screen Product: BACKHOE LOADER Model: 424B BACKHOE LOADER JRC Configuration: 424B Backhoe Loader JRC05546-UP (MACHINE)

Disassembly and Assembly 424B and 424B HD Backhoe Loaders Engine Supplement Media Number -UENR2398-02

Publication Date -01/07/2014

Date Updated -02/07/2014

i05755754

Fan - Remove and Install SMCS - 1356-012; 1356-010; 1356-011

Removal Procedure

Illustration 1

g03117676

1. Remove bolts (2) and fan guard (1) .

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424B Backhoe Loader JRC05546-UP (MACHINE)(SEBP5627 - 13) - Documentation

Illustration 2

2/2

g03117677

Picture for reference only

2. Remove nuts (3) and fan (4) .

Installation Procedure 1. Install Fan (4) in the reverse order of removal procedure.

Copyright 1993 - 2019 Caterpillar Inc.

Mon Dec 2 15:13:07 UTC+0800 2019

All Rights Reserved.

Private Network For SIS Licensees.

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2019/12/2

424B Backhoe Loader JRC05546-UP (MACHINE)(SEBP5627 - 13) - Documentation

1/4

Shutdown SIS Previous Screen Product: BACKHOE LOADER Model: 424B BACKHOE LOADER JRC Configuration: 424B Backhoe Loader JRC05546-UP (MACHINE)

Disassembly and Assembly 424B and 424B HD Backhoe Loaders Engine Supplement Media Number -UENR2398-02

Publication Date -01/07/2014

Date Updated -02/07/2014

i05755864

Radiator - Remove and Install SMCS - 1353-010

Removal Procedure Start By: a. Remove the hood.

Personal injury can result from hot coolant, steam and alkali.

At operating temperature, engine coolant is hot and under pressure. The radiator and all lines to heaters or the engine contain hot coolant or steam. Any contact can cause severe burns.

Remove filler cap slowly to relieve pressure only when engine is stopped and radiator cap is cool enough to touch with your bare hand.

Cooling System Conditioner contains alkali. Avoid contact with skin and eyes.

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.

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424B Backhoe Loader JRC05546-UP (MACHINE)(SEBP5627 - 13) - Documentation

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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.

1. Drain the engine coolant into a suitable container for storage or disposal refer to Operation and Maintenance Manual, "Cooling System Coolant-Change" for the correct draining and filling procedure.

2. Drain hydraulic oil into a suitable container for storage or disposal. Refer to Operation and Maintenance Manual, "Hydraulic System Oil - Change" for the correct draining and filling procedure.

Illustration 1

g03674054

3. Loosen hose clamps (2) and remove hose (1).

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424B Backhoe Loader JRC05546-UP (MACHINE)(SEBP5627 - 13) - Documentation

Illustration 2

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g03674056

4. Loosen clamps (3) and remove hose (4).

Illustration 3

g03674057

5. Remove bolts (8) and loosen clamps (6). Disconnect hoses (7).

6. Attach the suitable lifting device to radiator (5). The weight of the radiator is approximately 42 kg (93 lb).

7. Remove bolts (9).

8. Repeat Steps 5 and 7 to the opposite side of the machine.

9. Remove radiator (5).

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