Caterpillar Cat 420D BACKHOE LOADER (Prefix FDP) Service Repair Manual (FDP00001-07198)

Service Repair Manual

Models

420D BACKHOE LOADER

420D Backhoe Loader FDP00001-07198 (MACHINE) POWERED BY 3054 Engine(...

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Shutdown SIS Previous Screen Product: BACKHOE LOADER Model: 420D BACKHOE LOADER FDP Configuration: 420D Backhoe Loader FDP00001-07198 (MACHINE) POWERED BY 3054 Engine

Disassembly and Assembly 416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Power Train Media Number -RENR3578-12

Publication Date -01/04/2010

Date Updated -13/04/2010

i01499533

Final Drive (Drive and Steering Axle)(Rear) - Disassemble SMCS - 4050-015-RE

Disassembly Procedure Table 1 Required Tools Tool

Part Number

Part Description

Qty

A

8B-7554

Bearing Cup Puller

1

Start By: A. Remove the tires and wheels. See Disassembly and Assembly, "Tires & Wheels (Rear) Remove and Install".

B. Remove the rear axle. See Disassembly and Assembly, "Drive and Steering Axle (Rear) Remove".

C. Remove the final drive. See Disassembly and Assembly, "Final Drive (Drive and Steering Axle) - Remove".

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420D Backhoe Loader FDP00001-07198 (MACHINE) POWERED BY 3054 Engine(...

Illustration 1

g00780516

1. Remove snap ring (1) .

Illustration 2

g00780521

2. Use tooling (A) in order to remove planetary gear (2) .

Illustration 3

g00780523

3. Remove snap ring (3) and thrust washer (4) from the center of the planetary carrier.

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420D Backhoe Loader FDP00001-07198 (MACHINE) POWERED BY 3054 Engine(...

Illustration 4

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g00780530

4. Remove bearing (5), O-ring (6), and bearing race (7) from hub (8) .

Illustration 5

g00780536

5. Turn over the hub. Pry out seal ring (9). Remove bearing race (10) from the bore of the hub.

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420D Backhoe Loader FDP00001-07198 (MACHINE) POWERED BY 3054 Engine(...

Illustration 6

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g00780552

6. Remove two snap rings (11) from planetary gear. Remove two washers (12) and roller bearing (13) .

Copyright 1993 - 2019 Caterpillar Inc.

Mon Oct 28 23:24:17 UTC+0800 2019

All Rights Reserved.

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420D Backhoe Loader FDP00001-07198 (MACHINE) POWERED BY 3054 Engine(...

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Shutdown SIS Previous Screen Product: BACKHOE LOADER Model: 420D BACKHOE LOADER FDP Configuration: 420D Backhoe Loader FDP00001-07198 (MACHINE) POWERED BY 3054 Engine

Disassembly and Assembly 416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Power Train Media Number -RENR3578-12

Publication Date -01/04/2010

Date Updated -13/04/2010

i01504627

Final Drive (Drive and Steering Axle)(Rear) - Assemble SMCS - 4050-016-RE

Assembly Procedure

Illustration 1

g00780552

1. Install roller bearing (13), two washers (12), and two snap rings (11) .

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420D Backhoe Loader FDP00001-07198 (MACHINE) POWERED BY 3054 Engine(...

Illustration 2

g00780605

2. Use a press in order to install the bearing race. Apply some 9S-3263 Thread Lock Compound to the outer diameter of seal (9). Use a press in order to install seal (9) .

Illustration 3

g00780617

3. Use a press in order to install bearing race (7). Install O-ring (6) .

Illustration 4

g00780523

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420D Backhoe Loader FDP00001-07198 (MACHINE) POWERED BY 3054 Engine(...

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4. Install snap ring (3) and thrust washer (4) into the center of the planetary carrier.

Illustration 5

g00780516

5. Install the planetary gears. Secure the gears with snap ring (1) .

Copyright 1993 - 2019 Caterpillar Inc.

Mon Oct 28 23:25:14 UTC+0800 2019

All Rights Reserved.

Private Network For SIS Licensees.

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420D Backhoe Loader FDP00001-07198 (MACHINE) POWERED BY 3054 Engine(...

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Shutdown SIS Previous Screen Product: BACKHOE LOADER Model: 420D BACKHOE LOADER FDP Configuration: 420D Backhoe Loader FDP00001-07198 (MACHINE) POWERED BY 3054 Engine

Disassembly and Assembly 416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Power Train Media Number -RENR3578-12

Publication Date -01/04/2010

Date Updated -13/04/2010

i01503434

Final Drive (Drive and Steering Axle)(Rear) - Install SMCS - 4050-012-RE

Installation Procedure

Illustration 1

g00780205

1. Install bearing (15) onto the housing for the steering knuckle.

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420D Backhoe Loader FDP00001-07198 (MACHINE) POWERED BY 3054 Engine(...

Illustration 2

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g00780224

2. Lubricate the seal in the bore of the hub. Install the hub onto the steering knuckle. Install the outer hub bearing in order to secure the hub.

Illustration 3

g00780094

3. Install internal gear (13) .

Illustration 4

g00780232

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420D Backhoe Loader FDP00001-07198 (MACHINE) POWERED BY 3054 Engine(...

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4. Install slotted nut (12). Ensure that chamfered side of slotted nut (12) is facing outward.

Illustration 5

g00780090

Illustration 6

g00780247

5. Use tooling (A) in order to tighten slotted nut (12). Tighten the slotted nut to a rolling torque of 46 N¡m (34 lb ft).

Note: If the old bearings were reused, the rolling torque should be 27 N¡m (20 lb ft).

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420D Backhoe Loader FDP00001-07198 (MACHINE) POWERED BY 3054 Engine(...

Illustration 7

g00780084

6. After the proper rolling torque has been attained, install lock plate (11). Tighten bolts (10) to a torque of 69 N¡m (51 lb ft).

Note: Use new bolts in order to secure the lock plate.

Illustration 8

g00780232

7. Install washers (17) and (18). The flat face of washer (18) should be on the inside.

Illustration 9

g00780281

8. Install snap ring (19) .

9. Calculate the end play of the sun gear of the axle shaft.

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420D Backhoe Loader FDP00001-07198 (MACHINE) POWERED BY 3054 Engine(...

Illustration 10

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g00780674

a. Use a depth gauge and a straight edge in order to measure dimension (I). Dimension (I) is the distance from the flange surface to the contact face of the thrust washer. An example of dimension (I) is 166.2 mm (6.5 inch).

Illustration 11

g00785354

b. Straighten the axle and push the sun gear into the axle. Use a depth gauge and the straight edge in order to determine dimension (II). Dimension (II) is the distance from the end of the sun gear shaft to the flange surface of the hub. An example of dimension (II) is 163.1 mm (6.4212 inch). c. Subtract dimension (II) from dimension (I). Subtract the required end play from the difference of dimensions (I) and (II). The remaining distance is the proper width of the thrust washer that is located in the center of the planetary carrier. Ensure that the proper thrust washer is installed in the planetary carrier. If necessary, change the thrust washer. See Disassembly and Assembly, "Final Drive (Drive and Steering Axle) (Rear) - Assemble".

Note: Refer to the Specifications Manual for the proper end play.

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420D Backhoe Loader FDP00001-07198 (MACHINE) POWERED BY 3054 Engine(...

Illustration 12

g00778205

10. Use a suitable lifting device in order to install planetary carrier (5). It may be necessary to move the planetary gears slightly in order to mesh the gears with the sun gear.

Illustration 13

g00778197

11. Install two socket head bolts (4). Tighten bolts (4) to a torque of 55 N¡m (41 lb ft).

Illustration 14

g00778183

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420D Backhoe Loader FDP00001-07198 (MACHINE) POWERED BY 3054 Engine(...

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12. Install final drive drain plug (2). Tighten plug (2) to a torque of 120 N¡m (89 lb ft).

13. Fill the final drives with the proper lubricants. See Operation and Maintenance Manual for the proper lubricants and volumes.

End By: a. Install the tie rods. See Disassembly and Assembly, "Tie Rods (Steering) (Rear) - Remove and Install". b. Install the rear axle. See Disassembly and Assembly, "Drive and Steering Axle (Rear) Install". c. Install the tires and the wheels. See Disassembly and Assembly, "Tires & Wheels - Remove and Install".

Copyright 1993 - 2019 Caterpillar Inc.

Mon Oct 28 23:26:11 UTC+0800 2019

All Rights Reserved.

Private Network For SIS Licensees.

https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2019/10/28

420D Backhoe Loader FDP00001-07198 (MACHINE) POWERED BY 3054 Engine(...

1/3

Shutdown SIS Previous Screen Product: BACKHOE LOADER Model: 420D BACKHOE LOADER FDP Configuration: 420D Backhoe Loader FDP00001-07198 (MACHINE) POWERED BY 3054 Engine

Disassembly and Assembly 416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Power Train Media Number -RENR3578-12

Publication Date -01/04/2010

Date Updated -13/04/2010

i01493531

Drive and Steering Axle Housing (Rear) - Remove SMCS - 3020-011-RE; 3260-011-RE

Removal Procedure Start By: A. Remove the tires and wheels. See Disassembly and Assembly, "Tires & Wheels (Rear) Remove and Install".

B. Remove the rear axle. See Disassembly and Assembly, "Drive and Steering Axle (Rear) Remove".

Illustration 1

g00780456

1. Remove the cotter pin. Remove tie rod nut (1). Remove the ball joint end of the tie rod from steering housing (2). See Disassembly and Assembly, "Tie Rod (Rear) - Remove and Install".

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420D Backhoe Loader FDP00001-07198 (MACHINE) POWERED BY 3054 Engine(...

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2. Remove the drain plug for the differential housing. Drain the differential housing fluid into a suitable container.

Illustration 2

g00780436

3. Use a suitable lifting device in order to support the axle housing. Support the axle housing at the arrows.

Illustration 3

g00780435

4. Remove bolts (3) from the axle housing.

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420D Backhoe Loader FDP00001-07198 (MACHINE) POWERED BY 3054 Engine(...

Illustration 4

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g00780462

5. Use a suitable lifting device in order to remove the axle housing. Lift the axle housing at the arrows.

Note: The weight of the axle housing is approximately 250 kg (550 lb).

Copyright 1993 - 2019 Caterpillar Inc.

Mon Oct 28 23:27:07 UTC+0800 2019

All Rights Reserved.

Private Network For SIS Licensees.

https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2019/10/28

420D Backhoe Loader FDP00001-07198 (MACHINE) POWERED BY 3054 Engine(...

1/8

Shutdown SIS Previous Screen Product: BACKHOE LOADER Model: 420D BACKHOE LOADER FDP Configuration: 420D Backhoe Loader FDP00001-07198 (MACHINE) POWERED BY 3054 Engine

Disassembly and Assembly 416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Power Train Media Number -RENR3578-12

Publication Date -01/04/2010

Date Updated -13/04/2010

i01505002

Drive and Steering Axle Housing (Rear) - Disassemble SMCS - 3020-015-RE; 3260-015-RE

Disassembly Procedure Start By: A. Remove the tires and wheels. See Disassembly and Assembly, "Tires & Wheels (Rear) Remove and Install".

B. Remove the final drive. See Disassembly and Assembly, "Final Drive (Drive and Steering Axle) (Rear) - Remove".

1. Remove the drain plug for the differential housing in order to drain the differential housing.

Drain the housing into a suitable container.

Illustration 1

g00780872

2. Remove snap ring (1). Remove thrust washers (2) and (3) .

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420D Backhoe Loader FDP00001-07198 (MACHINE) POWERED BY 3054 Engine(...

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Note: It may be necessary to push the axle into the housing slightly in order to remove the snap ring and the washers. It may be necessary to pull the axle out of the housing slightly in order to remove the snap ring and the washers.

Illustration 2

g00780886

3. Measure the distance (X). The distance (X) is the length between the bottom of adjustment nut (4) and the top of bolt (5). Record this measurement for assembly purposes. Remove nut (4) and bolt (5) .

4. Remove the ball joint end of the tie rod. See Disassembly and Assembly, "Tie Rods (Steering) (Rear) - Remove and Install".

Illustration 3

g00780912

5. Remove four bolts (6). Remove two plastic caps (7) .

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420D Backhoe Loader FDP00001-07198 (MACHINE) POWERED BY 3054 Engine(...

Illustration 4

g00780920

6. Use a suitable lifting device in order to support the housing for the steering knuckle. Use forcing screws in order to push the bearing and pin (8) out of the housing.

Illustration 5

g00780928

7. Separate bearing (9) from pin (8). Remove the O-ring (10) .

Note: It is important to note the placement of the shims. Retain the proper shims with the corresponding pins.

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420D Backhoe Loader FDP00001-07198 (MACHINE) POWERED BY 3054 Engine(...

Illustration 6

g00780932

8. Remove the four bolts and the plastic caps from the bottom of the housing for the steering knuckle. Use forcing screws in order to remove the pin from the bottom of the housing for the steering knuckle. Separate bearing (11) from pin (12). Remove O-ring (13) .

Note: It is important to note the placement of the shims. Retain the proper shims with the corresponding pins.

Illustration 7

g00780934

9. Use a suitable lifting device in order to remove the housing for the steering knuckle.

Illustration 8

g00780942

10. Remove seal (14) and bushing (15) from the bore of the housing for the steering knuckle.

Note: It may be necessary to destroy seal (14) in order to remove the seal.

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