304.5 Mini Excavator Swivel Disassembly & Assembly

Service Repair Manual
Models
304.5 Mini Hydraulic
Excavator

Shutdown SIS
Previous Screen
Product: MINI HYD EXCAVATOR
Model: 304.5 MINI HYD EXCAVATOR WAK
Configuration: 304.5 Mini Hydraulic Excavator WAK00001-UP (MACHINE) POWERED BY 3024 Engine
Disassembly and Assembly
304.5 Mini Hydraulic Excavator Machine Systems
Media Number -RENR3548-04 Publication Date -01/08/2008 Date Updated -18/08/2008
i02462405
Swivel - Disassemble
SMCS - 5060-015
Disassembly Procedure
Table 1
REQUIRED TOOLS
Tool Part Number Part Description Qty
A 1P-1855 Retaining Ring Pliers 1
Start By:
a. Remove the swivel. Refer to Disassembly and Assembly, "Swivel - Remove".
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.
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.
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304.5 Mini Hydraulic Excavator WAK00001-UP (MACHINE) POWERED BY 3024 ...
2020/2/21
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis...

Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the
component should be thoroughly cleaned. This will help to prevent dirt from entering the internal
mechanism.
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. This helps to prevent fluid loss and this
helps to keep contaminants from entering the system.
Illustration 1 g00726792
1. Mark the orientation of the fittings for assembly purposes. Remove fittings (1), (2), (3), (4),
(5), (6), (7), and (8).
2. Remove fittings (9), (10), (11), (12), and (13).
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3. Remove fittings (14), (15), (16), (17), and (18).
4. Remove bolts (19).
5. Remove flange (20) from the housing.
6. Remove O-ring seal (21) from the housing.
7. Use Tooling (A ) in order to remove retaining ring (22).
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8. Remove spacer (23) from the housing.
9. Place the swivel on a suitable vise.
10. Remove housing (24) from the shaft.
11. Rotate the housing and remove dust seal (25) from the housing.
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12. Remove back up ring (26) from the housing.
13. Remove O-ring seal (27) from the housing.
14. Rotate the housing and remove seals (28) from housing (24).
15. Remove dust seal (29) from rotor (30).
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Fri Feb 21 20:47:40 UTC+0800 2020
5/5
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Shutdown SIS
Previous Screen
i02462417
Swivel - Assemble
SMCS - 5060-016
Assembly Procedure
Table 1
REQUIRED TOOLS
Tool Part Number Part Description Qty
A 1P-1855 Retaining Ring Pliers 1
NOTICE
performance of inspection, maintenance, testing, adjusting, and repair
containing fluids.
Refer to Special Publication, NENG2500, "Dealer Service Tool
Catalog" for tools and supplies suitable to collect and contain fluids on
Cat products.
Note: Cleanliness is an important factor. Before assembly, all parts should be thoroughly cleaned
in cleaning fluid. Allow the parts to air dry. Wiping cloths or rags should not be used to dry parts.
Lint may be deposited on the parts which may cause trouble later. Inspect all parts. If any parts are
worn or damaged, use new parts for replacement.
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Note: Apply a thin coat of hydraulic oil to all internal surfaces.
1. Install a new dust seal (29) onto rotor (30).
2. Apply a thin coat of hydraulic oil onto the dust seal.
3. Install new seals (28) into housing (24).
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4. Rotate the housing and install a new O-ring seal (27) into the housing.
5. Install back up ring (26) into the housing.
6. Install a new dust seal (25) into the housing.
7. Place rotor (30) on a suitable vise.
8. Install housing (24) onto the rotor.
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9. Install spacer (23) onto the rotor.
10. Use Tooling (A) to install retaining ring (22) onto the rotor.
11. Install a new O-ring seal (21) to the housing.
12. Position flange (20) to the housing.
13. Install bolts (19).
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14. Install fittings (14), (15), (16), (17), and (18) to the swivel.
15. Install fittings (9), (10), (11), (12), and (13) to the swivel.
16. Install fittings (1), (2), (3), (4), (5), (6), (7), and (8) to the swivel.
End By:
a. Install the swivel. Refer to Disassembly and Assembly, "Swivel - Install".
Fri Feb 21 20:48:37 UTC+0800 2020
5/5
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Shutdown SIS
Previous Screen
i01376430
Swivel - Install
SMCS - 5060-012
Installation Procedure
NOTICE
performance of inspection, maintenance, testing, adjusting and repair
containing fluids.
Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop
Products Guide" for tools and supplies suitable to collect and contain
fluids on Caterpillar products.
1/4
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1. Position swivel (26) to the undercarriage frame.
2. Install washers and four bolts (25) to the swivel. Tighten the bolts.
Bottom of the undercarriage frame.
3. Connect lines (20), (21), (22), (23), and (24) to the swivel.
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5. Position plate (14) to the undercarriage frame.
6. Install washers and two bolts (13) to the plate. Tighten the bolts.
7. Connect lines (10), (11), and (12) to the swivel.
8. Position plate (9) to the upper structure.
9. Install washers and two bolts (8) to the plate. Tighten the bolts.
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11. Connect the connector to the bottom of the plate assembly and place plate assembly (2) on
the cab floor.
12. Install washers and eight bolts (1) to the plate assembly. Tighten the bolts.
Fri Feb 21 20:49:33 UTC+0800 2020
4/4
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Shutdown SIS
Previous Screen
i02189657
Swing Motor - Remove
SMCS - 5058-011-ZW
Removal Procedure
Start By:
A. Release the hydraulic system pressure. Refer to Disassembly and Assembly, "Hydraulic
System Pressure - Release".
B. Remove the cab. Refer to Disassembly and Assembly, "Cab - Remove and Install".
C. Remove the seat. Refer to Disassembly and Assembly, "Seat - Remove and Install".
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 attachments have been lowered, 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.
NOTICE
performance of inspection, maintenance, testing, adjusting and repair
1/9
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containing fluids.
Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop
Products Guide" for tools and supplies suitable to collect and contain
fluids on Caterpillar products.
Note: Put identification marks on all lines, on all hoses, on all wires, and on all tubes for
installation purposes. Plug all lines, all hoses and all tubes. This helps to prevent fluid loss and this
helps to keep contaminants from entering the system.
1. Use lever (1) to unlatch the left console and move left console (2) to the raised position.
2. Disconnect clip (3) and link (4) from the left console.
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3. Remove bolt (5) and the washer from the pin assembly.
4. Remove pin assembly (6) from the left console.
5. Move the left console aside.
6. Remove two bolts (7) and washers.
7. Remove bolt (8) and the washer from the right console.
8. Remove pin assembly (9) from the right console.
9. Move right console (10) aside.
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10. Remove two bolts (11) and washers from the governor control mounting.
11. Move governor control mounting (12) aside.
12. Remove four bolts (13) and washers from the seat support.
4/9
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13. Remove seat support (14) with a suitable lifting device. weight of the seat support is 50 kg
(110 lb).
14. Remove four bolts (15) and washers from the cover.
15. Remove cover (16) from the floorplate.
16. Remove four bolts (17) from the electrical connectors.
17. Move four electrical connectors (18) aside.
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18. Remove four bolts (19) and washers from the fuse box.
19. Lower fuse box (20) to the floorplate.
20. Remove two bolts (21) and washers from the cover.
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21. Remove cover (22) from the floorplate.
22. Remove four electrical connectors (23) from the bracket.
23. Remove two bolts (24) and washers from the plate.
24. Remove plate assembly (25) from the floorplate.
25. Remove six bolts (26) and washers from the floorplate.
26. Remove floorplate (27) from the upper structure.
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304.5 Mini Excavator Swivel Disassembly & Assembly

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