Caterpillar cat 303.5 e mini hydraulic excavator (prefix rky) service repair manual (rky00001 and up)

Service Repair Manual
Models
303.5E Mini Hydraulic Excavator

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Product: MINI HYD EXCAVATOR
Model: 303.5E MINI HYD EXCAVATOR RKY
Configuration: 303.5E Mini Hydraulic Excavator RKY00001-UP (MACHINE) POWERED BY C1.8 Engine
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
i04778100
Swing Motor and Swing Drive - Assemble
SMCS - 5058-016-ZW; 5459-016
Assembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
C 1P-1857 Retaining Ring Pliers 1
D 1P-1859 Retaining Ring Pliers 1
1/11303.5E Mini Hydraulic Excavator RKY00001-UP (MACHINE) POWERED BY C1.8 ...
2020/3/1https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw...

Illustration 1 g01250188
1. Lower the temperature of bearing cup (62).
2. Install bearing cup (62) into housing (61).
3. Install seal (64) and bearing cone (63) onto shaft (56).
4. Lower the temperature of bearing cup (59).
5. Install lip seal (60) and bearing cup (59).

6. Install shaft (56) and bearing cone (58).
7. Install retainers (54), ring (53), ring gear (55), and O-ring seal (57).
8. Install the bearings, gears (51), and plate (50) onto carrier (52).
9. Use Tooling (D) in order to install retaining ring (49).
10. Install carrier assembly (48) and gear (47).

11. Install carrier (46), gear (45), bearings (44), and gears (43).
12. Install plate (42).
13. Install bearing (41), port plate (40), and plate (39).

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.
14. Install washer (35), spring (36), and washer (37).
15. Use Tooling (C) and a suitable press in order to install retaining ring (34).

16. Install pins (32) into barrel assembly (33).
17. Install bearing (31), retainer (30), and pistons (29).
18. Install rotating group (28).

19. Install piston (27).
20. Install spring assembly (26).
21. Raise the temperature of bearing (25).
22. Install bearing (25) from shaft assembly (23).

23. Install shaft assembly (23) and swashplate (24) into plate (22).
injury.
24. Install plate (22) and bolts (21).

25. Install head (20) and bolts (19).
26. Install O-ring seal (18), backup ring (17), O-ring seal (16), and backup ring (15) onto check
valve (13).
27. Repeat Step 26 for check valve (14).
28. Install check valve (13) and check valve (14).

injury.
29. Install spring (4), the O-ring seal, and plug (3).
30. Install spring (10), shim (9), the O-ring seal, and plug (8).
31. Install spool (6), the O-ring seal, and plug (7).
32. Install spool (11), the O-ring seal, and plug (12).
33. Install O-ring seals (5).
34. Install valve assembly (2) and bolts (1).
10/11303.5E Mini Hydraulic Excavator RKY00001-UP (MACHINE) POWERED BY C1...

End By:
a. Install the swing motor and the swing drive.
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
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Sun Mar 1 23:36:49 UTC+0800 2020
11/11303.5E Mini Hydraulic Excavator RKY00001-UP (MACHINE) POWERED BY C1...

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Systems
i04778102
Swing Motor and Swing Drive - Install
SMCS - 5058-012-ZW; 5459-012-ZW
Installation Procedure
Table 1
Required Tools
A 138-7573 Link Bracket 2
B 5P-3931 Anti-Seize Compound 1
1. Attach Tooling (A) and a suitable lifting device to swing motor and swing drive (2). The
weight of swing motor and swing drive (2) is approximately 27 kg (60 lb). Install swing
motor and swing drive (2).

2. Apply Tooling (B) to bolts (3). Install bolts (3) into swing motor and swing drive (2).
3. Connect hose assemblies (1) to the rear and to the left side of swing motor and swing drive
(2).
End By:
a. Install platform.
Sun Mar 1 23:37:46 UTC+0800 2020

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Systems
i06753331
Hydraulic Tank - Remove
SMCS - 5056-011
Removal Procedure
Table 1
Required Tools
Start By:
a. Remove the main control valve.
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 to prevent fluid loss and to keep
contaminants from entering the system.
Note: Cleanliness is an important factor. Before you begin the removal procedure, thoroughly
clean the exterior of the components to prevent dirt from entering the internal mechanism.

1. Remove bolts (1) and remove fender (2).
2. Remove tube assembly (3). Loosen clamp and remove hose (4). Disconnect hose assemblies
(5), (6), and (7).

3. Disconnect hose (9) from the bottom of hydraulic oil tank (8).
4. Attach Tooling (A) and a suitable lifting device to hydraulic oil tank (8). The weight of
hydraulic oil tank (8) is approximately 68 kg (150 lb). Remove bolts (10) and remove
hydraulic oil tank (8).
Sun Mar 1 23:38:43 UTC+0800 2020

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Systems
i06753585
Hydraulic Tank - Install
SMCS - 5056-012
Installation Procedure
Table 1
Required Tools
Note: Cleanliness is an important factor. Before assembly, thoroughly clean all parts in cleaning
fluid. Allow the parts to air dry. Do not use wiping cloths or rags 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 Tooling (A) and a suitable lifting device to hydraulic oil tank (8). The weight of
hydraulic oil tank (8) is approximately 68 kg (150 lb). Install hydraulic oil tank (8) and bolts
(10).
2. Connect hose (9) to the bottom of hydraulic oil tank (8).

3. Install hose assemblies (5), (6), and (7). Connect hose assembly and tighten clamp (4).
Install tube assembly (3).
4. Install fender (2) and bolts (1).
End By:
a. Install the main control valve.
Sun Mar 1 23:39:39 UTC+0800 2020

Caterpillar cat 303.5 e mini hydraulic excavator (prefix rky) service repair manual (rky00001 and up)

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