Service Repair Manual
Models
M322C WHEELED Excavator
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Shutdown SIS Previous Screen Product: WHEELED EXCAVATOR Model: M322C WHEELED EXCAVATOR H2G Configuration: M322C Excavator H2G00001-UP (MACHINE) POWERED BY 3056E Engine
Disassembly and Assembly M318C and M322C Excavators Machine Systems Media Number -RENR9213-02
Publication Date -01/12/2006
Date Updated -05/12/2006
i02370681
Boom Cylinder - Remove and Install SMCS - 5456-010
Removal Procedure Table 1 Required Tools Tool
Part Number
Part Description
Qty
Puller Stud M30 x 3.5
1
9U-5346
Nut M30 x 3.5
1
6V-4035
Sleeve
1
6V-3175
Hydraulic Cylinder Gp
1
3S-6224
Electric Hydraulic Pump Gp
1
9U-5344
A
Cylinders equipped with lock valves can remain pressurized for very long periods of time, even with the hoses removed. Failure to relieve pressure before removing a lock valve or disassembling a cylinder can result in personal injury or death. Ensure all pressure is relieved before removing a lock valve or disassembling a cylinder.
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At operating temperature, the hydraulic oil is hot and under pressure. Hot oils can cause burns. To prevent possible personal injury, release the pressure in the work tool hydraulic circuit (boom, stick, bucket, and swing), travel circuits, and the hydraulic oil tank at the filler cap before any hydraulic lines or components are disconnected or removed. Remove the filler cap only when the engine is stopped and the filler cap is cool enough to touch.
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 Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates.
NOTICE Keep all parts clean from contaminants. Contamination of the hydraulic system with foreign material will reduce the service life of the hydraulic system components. To prevent contaminants from entering the hydraulic system, always plug or cap the lines, fittings, or hoses as they are disconnected. Cover any disassembled components and clean them properly before assembly. Clean the hydraulic system properly after any major component exchange or especially after a component failure, to remove any contamination.
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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.
Illustration 1
g01185348
1. Position boom (1) on suitable cribbing. 2. Release the hydraulic system pressure. Refer to Disassembly and Assembly, "Hydraulic System Pressure - Release".
Illustration 2
g01185349
3. Loosen nut (4) and turn screw (3) clockwise in order to release the pressure in valve assembly (5) . 4. Remove bolts (2) and (6). Reposition valve assembly (5) .
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Illustration 3
g01185350
Illustration 4
g01185351
5. Disconnect grease hose assemblies (7) and (8). Disconnect hose assembly (9) .
Illustration 5
g01185352
6. Attach a suitable lifting device to boom cylinder (10). The weight of boom cylinder (10) is approximately 213 kg (470 lb). 7. Remove bolts (11) and plate (12) .
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Illustration 6
g01185353
8. Remove shims (13) and reposition pin assembly (14) .
Illustration 7
g01185354
Illustration 8
g01185355
9. Remove bolt (16). Attach Tooling (A) to pin assembly (15) .
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10. Use two people and Tooling (A) to remove pin assembly (15). The combined weight of Tooling (A) and pin assembly (15) is approximately 32 kg (70 lb). Remove shims (17) . 11. Remove boom cylinder (10) . 12. Repeat Steps 3 through 11 for the remaining boom cylinder.
Disassembly and Assembly Information Table 2 Required Tools Tool
Part Number
Part Description
Qty
B
127-4904
Hydraulic Cylinder Repair Stand
1
1P-1838
Adapter
1
9U-6832
Nut 1 1/4 - 12 NC
1
4C-9634
Puller Stud 1 1/4 - 12 NC
1
3S-6224
Electric Hydraulic Pump Gp
1
6V-2108
Sleeve
1
Adapter
1
9U-6832
Nut 1 1/4 - 12 NC
1
4C-9634
Puller Stud 1 1/4 - 12 NC
1
3S-6224
Electric Hydraulic Pump Gp
1
6V-3175
Double Acting Cylinder
1
1M-6756
Sleeve
1
C
9U-6227
D
E
7M-7456
Bearing Mount Compound
-
F
1P-0808
Multipurpose Grease
-
G
195-4609
Seal Pick
1
Cylinders equipped with lock valves can remain pressurized for very long periods of time, even with the hoses removed. Failure to relieve pressure before removing a lock valve or disassembling a cylinder can result in personal injury or death.
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Ensure all pressure is relieved before removing a lock valve or disassembling a cylinder.
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 Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates.
Illustration 9
g01185583
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(1) Use Tooling (C) to remove the sleeve bearing. Install the sleeve bearing to a depth of 7.5 ± 0.3 mm (0.30 ± 0.01 inch). (2) Use Tooling (D) to remove the sleeve bearing. Install sleeve bearing to a depth of 9.5 ± 0.3 mm (0.37 ± 0.01 inch). (3) Lubricate the seals slightly with the lubricant that is being sealed. (4) Apply Tooling (E) to the wiper seal groove prior to assembly. (5) Lubricate the threads and the face of the locknut with Tooling (F). Tighten the locknut to a torque of 7900 ± 300 N·m (5827 ± 221 lb ft). (6) Lubricate the inner diameters and outer diameters with Tooling (F). (7) The slit of the ring must turn in the direction of the piston.
Installation Procedure
Illustration 10
g01185354
1. Attach a suitable lifting device to boom cylinder (10). The weight of boom cylinder (10) is approximately 213 kg (470 lb). Use the suitable lifting device to position boom cylinder (10) . 2. Install shims (17) in order to maintain a maximum lateral clearance of 0.8 mm (0.03 inch). Install pin assembly (15) and bolt (16) .
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Illustration 11
g01185353
3. Install shims (13) in order to maintain a maximum lateral clearance of 0.8 mm (0.03 inch). Reposition pin assembly (14) .
Illustration 12
g01185352
4. Install plate (12) and bolts (11). Tighten bolts (11) to a torque of 100 ± 20 N·m (74 ± 15 lb ft). 5. Remove the suitable lifting device from boom cylinder (10) .
Illustration 13
g01185350
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Illustration 14
g01185351
6. Connect grease hose assemblies (7) and (8). Connect hose assembly (9) .
Illustration 15
g01185349
7. Position valve assembly (5) and install bolts (2) and (6). Return nut (4) and screw (3) to the original position. 8. Repeat Steps 1 through 7 for the remaining boom cylinder.
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Illustration 16
g01185348
9. Remove the suitable cribbing from boom (1) . Copyright 1993 - 2020 Caterpillar Inc.
Tue Mar 31 07:21:16 UTC+0800 2020
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Shutdown SIS Previous Screen Product: WHEELED EXCAVATOR Model: M322C WHEELED EXCAVATOR H2G Configuration: M322C Excavator H2G00001-UP (MACHINE) POWERED BY 3056E Engine
Disassembly and Assembly M318C and M322C Excavators Machine Systems Media Number -RENR9213-02
Publication Date -01/12/2006
Date Updated -05/12/2006
i03476100
Boom - Remove SMCS - 6501-011
Removal Procedure Table 1 Required Tools Tool
Part Number
Part Description
Qty
A
189-0411
Shackle As
2
B
1U-9202
Lever Puller Hoist
1
9U-5340
Sleeve Extension
1
6V-0086
Sleeve
2
137-8460
Puller Stud
1
6V-3175
Hydraulic Cylinder Gp
1
3S-6224
Electric Hydraulic Pump Gp
1
9U-5346
Nut
1
C
Start By: A. Remove the stick. Refer to Disassembly and Assembly, "Stick - Remove".
When you are using hydraulic cylinders and puller studs, always ensure that the rated capacity of the puller stud meets or exceeds the rated capacity of the hydraulic cylinder. If the puller stud does not meet or
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exceed the rated capacity of the hydraulic cylinder, a sudden failure of the puller stud could occur. The sudden failure of the puller stud could result in personal injury or death.
NOTICE Do not use threaded rods that have not been hardened as tooling with hydraulic cylinders. The maximum rated tonnage should be stamped on one end of the puller studs. Do not use threaded rods that have not been stamped with the rated tonnage.
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 Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates.
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.
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Illustration 1
g01182978
1. Position boom (1) on suitable cribbing. 2. Release the hydraulic system pressure. Refer to Disassembly and Assembly, "Hydraulic System Pressure - Release". 3. Remove the air cleaner. Refer to Disassembly and Assembly, "Air Cleaner - Remove and Install".
Illustration 2
g01182982
Illustration 3
g01182981
4. Raise hood assembly (2) . Attach a suitable lifting device in order to support hood assembly (2) . Remove struts (3) . Lower hood assembly (2) .
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Illustration 4
g01182980
5. Remove bolts (4) . Use two people in order to remove hood assembly (2) .
Illustration 5
g01182983
6. Disconnect harness assembly (5) .
Illustration 6
g01182984
7. Disconnect hose assemblies (6) and hose assemblies (7) .
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Illustration 7
g01182985
8. Disconnect hose assembly (8) .
Illustration 8
g01182987
9. Disconnect hose assemblies (9) and hose assemblies (10) . Disconnect hose assembly (11) and hose assembly (12) . Remove the mounting hardware.
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Illustration 9
g01182988
10. Disconnect grease hose assembly (13) .
Illustration 10
g01182990
11. Attach a suitable lifting device to boom cylinder (14) . The weight of boom cylinder (14) is approximately 213 kg (470 lb). Remove bolts (15) and plate (16) .
Illustration 11
g01182992
12. Remove shims (17) . Reposition pin (18) . Use the suitable lifting device in order to lower boom cylinder (14) onto suitable cribbing. 13. Repeat Steps 10 through 12 for the remaining boom cylinder.
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Illustration 12
g01182993
14. Attach Tooling (A) , Tooling (B) , and a suitable lifting device to boom (1) . The weight of boom (1) is approximately 1678 kg (3700 lb).
Illustration 13
g01182994
Illustration 14
g01182995
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15. Remove bolt (20) . Attach Tooling (C) and a suitable lifting device to pin assembly (19) . The combined weight of Tooling (C) and pin assembly (19) is approximately 104 kg (230 lb). 16. Remove pin assembly (19) and shims (21) . 17. Remove boom (1) from the machine. Copyright 1993 - 2020 Caterpillar Inc.
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Shutdown SIS Previous Screen Product: WHEELED EXCAVATOR Model: M322C WHEELED EXCAVATOR H2G Configuration: M322C Excavator H2G00001-UP (MACHINE) POWERED BY 3056E Engine
Disassembly and Assembly M318C and M322C Excavators Machine Systems Media Number -RENR9213-02
Publication Date -01/12/2006
Date Updated -05/12/2006
i02381082
Boom Bearings and Seals - Remove SMCS - 7551-011-BM
Removal Procedure Boom Bearings (Front) 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. Remove the stick. Refer to Disassembly and Assembly, "Stick - Remove".
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Illustration 1
g01149293
2. Remove seal (1) . 3. Remove bearing (2) . 4. Remove seal (3) . 5. Repeat Steps 2 through 4 for the bearings and seals on the opposite side of boom (4) .
Removal Procedure Boom Bearings (Rear) Table 1 Required Tools Tool
Part Number
A
9U-5338
Part Description
Qty
Adapter Plate
1
6V-4035
Sleeve
1
9U-6227
Adapter
1
3S-6224
Electric Hydraulic Pump Gp
1
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165-3790
Puller Stud
1
9U-6832
Nut
1
6V-3175
Double Acting Cylinder
1
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. Remove the boom. Refer to Disassembly and Assembly, "Boom - Remove".
Illustration 2
g01149354
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Illustration 3
g01149352
2. Remove seal (1) . 3. Use a suitable lifting device to support Tooling (A). The weight of Tooling (A) is approximately 32 kg (70 lb). Use Tooling (A) to remove bearing (2) . 4. Remove seal (3) . 5. Repeat Steps 2 through 4 for the bearings and seals on the opposite side of boom (4) . Copyright 1993 - 2020 Caterpillar Inc.
Tue Mar 31 07:23:07 UTC+0800 2020
All Rights Reserved. Private Network For SIS Licensees.
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