2. Shutdown SIS
Previous Screen
Product: MINI HYD EXCAVATOR
Model: 304 MINI HYD EXCAVATOR NAD
Configuration: 304CR Mini Hydraulic Excavator NAD00001-UP (MACHINE) POWERED BY S4L2 Engine
Disassembly and Assembly
304 Mini Hydraulic ExcavatorEngine Supplement and Machine Systems
Media Number -RENR6668-01 Publication Date -01/01/2004 Date Updated -19/01/2004
i01823295
Travel Motor - Disassemble
SMCS - 4351-015; 79PC-015
Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 1P-1862 Snap Ring Pliers 1
B 1U-7588 Pry Bar 2
Start By:
A. Remove the piston motor (travel). Refer to Disassembly and Assembly, "Piston Motor
(Travel) - Remove" in this manual.
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, "Caterpillar Tools and Shop
Products Guide" for tools and supplies suitable to collect and contain
fluids on Caterpillar products.
Dispose of all fluids according to local regulations and mandates.
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3. Note: Put identification marks on the travel motor and on all lines for installation purposes. Plug
all lines. This will help to prevent fluid loss and this helps to keep contaminants from entering the
system.
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.
1. Put an alignment mark across the section of the travel motor and the final drive for assembly
purposes. The parts must be reinstalled in the original locations of the parts.
Illustration 1 g00763560
2. Remove plugs (1). Drain the oil.
Illustration 2 g00763551
3. Remove bolts (2). Remove plate (3) .
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5. 6. Put identification marks on piston assemblies (6) in order to indicate the locations of the
pistons in the retainer plate (7) and the barrel (8). Remove piston assemblies (6) and retainer
plate (7) from barrel (8) as a unit. Separate the piston assemblies from the retainer plate.
Illustration 6 g00763958
7. Remove guide (9) and pins (10) from barrel (8) .
Illustration 7 g00763585
8. Remove swashplate (11) .
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6. Illustration 8 g00763590
9. Remove piston (12), and spring (13) .
Illustration 9 g00763910
10. Use a 0.25 mm (0.010 inch) feeler gauge to a 0.38 mm (0.015 inch) feeler gauge. Remove
ring (14) from the groove between cover (15) and the final drive housing.
Illustration 10 g00763597
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7. 11. Remove cover (16) .
Illustration 11 g00763603
12. Remove O-ring seal (17) .
Illustration 12 g00763605
13. Use Tooling (A) in order to remove retaining rings (18) .
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9. Illustration 16 g00764056
NOTICE
The thread lock compound that is used on the reamer bolts may cause
the reamer bolts to seize during removal.
The reamer bolts should be slowly removed by hand. Do not use an
impact wrench in order to remove the reamer bolts. If the reamer bolts
will no longer turn during removal, do not force or complete the
removal. Instead, tighten the bolts, then try to loosen them again.
17. Carefully remove bolts (25). Remove retaining rings (26) .
Illustration 17 g00763700
18. Use Tooling (B) in order to separate spindle (27) from housing (28) .
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11. Illustration 21 g00764198
22. Remove bearing cone (35), and bearing cone (38) from shaft (34). Remove bearing (36),
and bearing (37) from shaft (34) .
Illustration 22 g00862751
23. Remove Duo-Cone seal kit (39). Remove pins (40). Remove bearing (41) .
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12. Illustration 23 g00764855
24. If necessary, remove valve (42). Remove bearing (43) .
Illustration 24 g00764867
25. Remove plugs (44), and the O-ring seals. Remove springs (45), stoppers (46), and spool
(47) .
Illustration 25 g00764880
26. Remove plugs (48), and the O-ring seals. Remove springs (49), and stoppers (50) .
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13. Illustration 26 g00764899
27. If necessary, remove plugs (51). Remove plug (52), and the O-ring seal. Remove plug (53) .
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Sat Feb 22 23:33:00 UTC+0800 2020
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14. Shutdown SIS
Previous Screen
Product: MINI HYD EXCAVATOR
Model: 304 MINI HYD EXCAVATOR NAD
Configuration: 304CR Mini Hydraulic Excavator NAD00001-UP (MACHINE) POWERED BY S4L2 Engine
Disassembly and Assembly
304 Mini Hydraulic ExcavatorEngine Supplement and Machine Systems
Media Number -RENR6668-01 Publication Date -01/01/2004 Date Updated -19/01/2004
i01669600
Travel Motor - Disassemble
SMCS - 4351-015; 79PC-015
Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 1P-1862 Snap Ring Pliers 1
B 1U-7588 Pry Bar 2
Start By:
A. Remove the piston motor (travel). Refer to Disassembly and Assembly, "Piston Motor
(Travel) - Remove" in this manual.
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, "Caterpillar Tools and Shop
Products Guide" for tools and supplies suitable to collect and contain
fluids on Caterpillar products.
Dispose of all fluids according to local regulations and mandates.
1/12
304CR Mini Hydraulic Excavator NAD00001-UP (MACHINE) POWERED BY S4L2...
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15. Note: Put identification marks on the travel motor and on all lines for installation purposes. Plug
all lines. This will help to prevent fluid loss and this helps to keep contaminants from entering the
system.
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.
1. Put an alignment mark across the section of the travel motor and the final drive for assembly
purposes. The parts must be reinstalled in the original locations of the parts.
Illustration 1 g00763560
2. Remove plugs (1). Drain the oil.
Illustration 2 g00763551
3. Remove bolts (2). Remove plate (3) .
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17. 6. Put identification marks on piston assemblies (6) in order to indicate the locations of the
pistons in the retainer plate (7) and the barrel (8). Remove piston assemblies (6) and retainer
plate (7) from barrel (8) as a unit. Separate the piston assemblies from the retainer plate.
Illustration 6 g00763958
7. Remove guide (9) and pins (10) from barrel (8) .
Illustration 7 g00763585
8. Remove swashplate (11) .
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18. Illustration 8 g00763590
9. Remove piston (12), and spring (13) .
Illustration 9 g00763910
10. Use a 0.25 mm (0.010 inch) feeler gauge to a 0.38 mm (0.015 inch) feeler gauge. Remove
ring (14) from the groove between cover (15) and the final drive housing.
Illustration 10 g00763597
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19. 11. Remove cover (16) .
Illustration 11 g00763603
12. Remove O-ring seal (17) .
Illustration 12 g00763605
13. Use Tooling (A) in order to remove retaining rings (18) .
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20. Thank you very much for
your reading. Please Click
Here. Then Get COMPLETE
MANUAL. NO WAITING
NOTE:
If there is no response to
click on the link above,
please download the PDF
document first and then
click on it.
22. Illustration 16 g00764056
NOTICE
The thread lock compound that is used on the reamer bolts may cause
the reamer bolts to seize during removal.
The reamer bolts should be slowly removed by hand. Do not use an
impact wrench in order to remove the reamer bolts. If the reamer bolts
will no longer turn during removal, do not force or complete the
removal. Instead, tighten the bolts, then try to loosen them again.
17. Carefully remove bolts (25). Remove retaining rings (26) .
Illustration 17 g00763700
18. Use Tooling (B) in order to separate spindle (27) from housing (28) .
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