Caterpillar cat m322 c wheeled excavator (prefix h2g) service repair manual (h2g00001 and up)

Service Repair Manual
Models
M322C WHEELED Excavator

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
A
9U-5344
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
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".
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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5. Disconnect grease hose assemblies (7) and (8). Disconnect hose assembly (9) .
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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8. Remove shims (13) and reposition pin assembly (14) .
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
B 127-4904 Hydraulic Cylinder Repair Stand 1
C
1P-1838 Adapter 1
9U-6832
Nut
1 1/4 - 12 NC
1
4C-9634
Puller Stud
1 1/4 - 12 NC
1
6V-2108 Sleeve 1
D
9U-6227 Adapter 1
9U-6832
Nut
1 1/4 - 12 NC
1
4C-9634
Puller Stud
1 1/4 - 12 NC
1
6V-3175 Double Acting Cylinder 1
1M-6756 Sleeve 1
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
containing fluids.
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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
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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3. Install shims (13) in order to maintain a maximum lateral clearance of 0.8 mm (0.03 inch).
Reposition pin assembly (14) .
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) .
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6. Connect grease hose assemblies (7) and (8). Connect hose assembly (9) .
7. Position valve assembly (5) and install bolts (2) and (6). Return nut (4) and screw (3) to the
original position.
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9. Remove the suitable cribbing from boom (1) .
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Tue Mar 31 07:21:16 UTC+0800 2020
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Shutdown SIS
Previous Screen
i03476100
Boom - Remove
SMCS - 6501-011
Removal Procedure
Table 1
Required Tools
A 189-0411 Shackle As 2
B 1U-9202 Lever Puller Hoist 1
C
9U-5340 Sleeve Extension 1
6V-0086 Sleeve 2
137-8460 Puller Stud 1
6V-3175 Hydraulic Cylinder Gp 1
9U-5346 Nut 1
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
containing fluids.
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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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".
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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5. Remove bolts (4) . Use two people in order to remove hood assembly (2) .
6. Disconnect harness assembly (5) .
7. Disconnect hose assemblies (6) and hose assemblies (7) .
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8. Disconnect hose assembly (8) .
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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10. Disconnect grease hose assembly (13) .
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) .
12. Remove shims (17) . Reposition pin (18) . Use the suitable lifting device in order to lower
boom cylinder (14) onto suitable cribbing.
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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).
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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.
Tue Mar 31 07:22:12 UTC+0800 2020
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Shutdown SIS
Previous Screen
i02381082
Boom Bearings and Seals - Remove
SMCS - 7551-011-BM
Removal Procedure
Boom Bearings (Front)
mechanism.
1. Remove the stick. Refer to Disassembly and Assembly, "Stick - Remove".
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2. Remove seal (1) .
3. Remove bearing (2) .
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
A 9U-5338 Adapter Plate 1
6V-4035 Sleeve 1
9U-6227 Adapter 1
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165-3790 Puller Stud 1
9U-6832 Nut 1
6V-3175 Double Acting Cylinder 1
mechanism.
1. Remove the boom. Refer to Disassembly and Assembly, "Boom - Remove".
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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) .
5. Repeat Steps 2 through 4 for the bearings and seals on the opposite side of boom (4) .
Tue Mar 31 07:23:07 UTC+0800 2020
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Caterpillar cat m322 c wheeled excavator (prefix h2g) service repair manual (h2g00001 and up)

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