Caterpillar Cat 304E Mini Hydraulic Excavator (Prefix SSC) Service Repair Manual (SSC00001 and up)

Service Repair Manual

Models

304E Mini Hydraulic Excavator

304E Mini Hydraulic Excavator SSC00001-UP (MACHINE)(SEBP6445 - 09) - Docu...

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Shutdown SIS Previous Screen Product: MINI HYD EXCAVATOR Model: 304E MINI HYD EXCAVATOR SSC Configuration: 304E Mini Hydraulic Excavator SSC00001-UP (MACHINE)

Disassembly and Assembly 303E CR, 303.5E, 304E, 305.5E and 305E Mini Hydraulic Excavators Machine Systems Media Number -UENR0148-04

Publication Date -01/10/2016

Date Updated -25/10/2016

i06906733

Final Drive and Travel Motor - Assemble SMCS - 4050-016; 4351-016

Assembly Procedure Table 1 Required Tools Tool

Part Number

Part Description

Qty

B

1P-1857

Retaining Ring Pliers

1

C

289-6053

Spanner Wrench

1

Illustration 1

g01243022

1. Install Duo-Cone Seal Gp (53).

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304E Mini Hydraulic Excavator SSC00001-UP (MACHINE)(SEBP6445 - 09) - Docu...

Illustration 2

g01243021

2. Install bearing (52) and Duo-Cone Seal Gp (51).

Illustration 3

g01243019

3. Install ring gear assembly (49) onto motor housing (50).

Illustration 4

g01243018

4. Use Tooling (C) to install nut (48).

5. Tighten nut (48) to a torque of 240 N¡m (177 lb ft).

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Illustration 5

g01371953

6. Raise the temperature of bearing (48A).

7. Install bearing (48A) onto shaft (45).

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.

Illustration 6

g01243016

8. Install spring (45) and seal (47).

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304E Mini Hydraulic Excavator SSC00001-UP (MACHINE)(SEBP6445 - 09) - Docu...

Illustration 7

g01243015

9. Install piston (43), shaft assembly (45), and rockers (44).

Illustration 8

g01243013

10. Install swashplate (42).

Illustration 9

g01243012

11. Install pistons (39), bearing (41), and retainer (40).

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304E Mini Hydraulic Excavator SSC00001-UP (MACHINE)(SEBP6445 - 09) - Docu...

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.

Illustration 10

g01243011

12. Install washers (37) and spring (38).

Illustration 11

g01243009

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.

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304E Mini Hydraulic Excavator SSC00001-UP (MACHINE)(SEBP6445 - 09) - Docu...

13. Use a suitable press and Tooling (B) to install retaining ring (36).

Illustration 12

g01243008

14. Install pins (35).

Illustration 13

g01243007

15. Install barrel (32), discs (33), and plates (34).

Illustration 14

g01243006

16. Install O-ring seals (31).

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Illustration 15

g01244899

17. Install piston (30).

Illustration 16

g01243004

18. Install O-ring seals (28), O-ring seal (27), and springs (29).

Illustration 17

g01243003

19. Install bearing (26) and port plate (25).

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Illustration 18

8/12

g01243001

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.

20. Install head (23) and bolts (24). Tighten bolts (24) to a torque of 29 ± 5 N·m (21 ± 4 lb ft).

Illustration 19

g01243000

21. Install poppet (22).

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Illustration 20

g01242998

22. Install spring (21).

Illustration 21

g01242996

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.

23. Install the O-ring seal and plug (20). Tighten plug (20) to a torque of 196 ± 15 N·m (145 ± 11 lb ft).

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304E Mini Hydraulic Excavator SSC00001-UP (MACHINE)(SEBP6445 - 09) - Do...

Illustration 22

g01242992

24. Install washers (16), coupling (17), washer (18), and setscrews (19).

Illustration 23

g01242991

25. Install bearings (14), gear (15), and gears (13).

Illustration 24

g01242989

26. Install retainers (12) and bolts (11). Tighten bolts (11) to a torque of 33 ± 5 N·m (24 ± 4 lb ft).

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304E Mini Hydraulic Excavator SSC00001-UP (MACHINE)(SEBP6445 - 09) - Do...

Illustration 25

11/12

g01242988

27. Install carrier (9) and washer (10).

Illustration 26

g01242987

28. Install bearings (7), gear (8), and gears (6).

Illustration 27

g01242984

29. Install retainer (5) and bolts (4). Tighten bolts (4) to a torque of 33 ± 5 N·m (24 ± 4 lb ft).

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304E Mini Hydraulic Excavator SSC00001-UP (MACHINE)(SEBP6445 - 09) - Do...

Illustration 28

12/12

g01242982

30. Install cover (3), ring (1), and plug (2). Tighten plug (2) to a torque of 59 ± 10 N·m (44 ± 7 lb ft).

End By: a. Install the final drive and the travel motor.

Copyright 1993 - 2020 Caterpillar Inc.

Wed Feb 19 19:21:46 UTC+0800 2020

All Rights Reserved.

Private Network For SIS Licensees.

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Shutdown SIS Previous Screen Product: MINI HYD EXCAVATOR Model: 304E MINI HYD EXCAVATOR SSC Configuration: 304E Mini Hydraulic Excavator SSC00001-UP (MACHINE)

Disassembly and Assembly 303E CR, 303.5E, 304E, 305.5E and 305E Mini Hydraulic Excavators Machine Systems Media Number -UENR0148-04

Publication Date -01/10/2016

Date Updated -25/10/2016

i06799276

Final Drive and Travel Motor - Assemble SMCS - 4050-016; 4351-016

Assembly Procedure Table 1 Required Tools Tool

Part Number

B

1P-1857

Retaining Ring Pliers

1

D

289-6052

Spanner Wrench

1

E

161-4350

Duo-Cone Seal Installation Gp

1

Illustration 1

Part Description

Qty

g03779912

1. Use Tooling (E) to install Duo-Cone seal (58).

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304E Mini Hydraulic Excavator SSC00001-UP (MACHINE)(SEBP6445 - 09) - Docu...

Illustration 2

g03779907

2. Install bearing (59). Use Tooling (E) to install Duo-Cone seal (58).

Illustration 3

g03779867

Illustration 4

g03779864

3. There is a count of 132 balls (57). Install balls (57).

4. Install plug (56).

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304E Mini Hydraulic Excavator SSC00001-UP (MACHINE)(SEBP6445 - 09) - Docu...

Illustration 5

3/14

g01245010

5. Install ring gear (54) onto motor housing (55).

6. Use Tooling (D) to install nut (53). The torque of nut (53) is 196 ± 9.8 N·m (145 ± 7 lb ft).

7. Install bolts (52) and tighten to a torque of 6 ± 2 N·m (53 ± 18 lb in).

Illustration 6

g01245009

8. Install springs (50) and seal (51).

Illustration 7

g01246088

9. Raise temperature of bearing (48).

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304E Mini Hydraulic Excavator SSC00001-UP (MACHINE)(SEBP6445 - 09) - Docu...

10. Install bearing (48) onto shaft (47).

Illustration 8

g01245007

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.

11. Install pistons (46), balls (49), shaft (47), and bearing (48).

Illustration 9

g01245005

12. Install swashplate (45).

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304E Mini Hydraulic Excavator SSC00001-UP (MACHINE)(SEBP6445 - 09) - Docu...

Illustration 10

g01245002

13. Install retainer (44), pistons (42), and bearing (43).

Illustration 11

g01245000

14. Install washers (39), spring (41), and washer (40).

Illustration 12

g01244998

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304E Mini Hydraulic Excavator SSC00001-UP (MACHINE)(SEBP6445 - 09) - Docu...

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.

15. Use a suitable press and Tooling (B) to install retaining ring (38).

Illustration 13

g01244999

16. Install pins (37).

Illustration 14

g01244997

17. Install plate (35) and barrel (36).

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304E Mini Hydraulic Excavator SSC00001-UP (MACHINE)(SEBP6445 - 09) - Docu...

Illustration 15

g01244996

18. Install O-ring seals (34) and backup rings (33).

Illustration 16

g01244993

19. Install piston (32), springs (28), O-ring seal (29), O-ring seals (30), and O-ring seals (31).

Illustration 17

g01244992

20. Install port plate (25), bearing (27), and pins (26).

Note: Make sure that port plate (25) stays aligned with dowel during assembly.

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304E Mini Hydraulic Excavator SSC00001-UP (MACHINE)(SEBP6445 - 09) - Docu...

Illustration 18

8/14

g01244991

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.

21. Install head (24) and bolts (23) . Tighten bolts (23) to a torque of 64 ± 4 N·m (47 ± 3 lb ft).

Illustration 19

g01244989

22. Install spool (22).

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304E Mini Hydraulic Excavator SSC00001-UP (MACHINE)(SEBP6445 - 09) - Docu...

Illustration 20

g01244988

23. Install spring (21) and retainer (20).

Illustration 21

g01244987

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.

24. Install the O-ring seal and plug (19).

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