- Excavator
- 325F (S/N: XAA1-UP; YCA1-UP)
- Hydraulic Control
- HYDRAULIC KIT (S/N: HKF1-UP)
Introduction
Do not perform any procedure in this Special Instruction until you have read the information and you understand the information.
Safety Section
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Do not operate or work on this machine unless you have read and understand the instructions and warnings in the Operation and Maintenance Manuals. Failure to follow the instructions or heed the warnings could result in injury or death. Contact your Cat dealer for replacement manuals. Proper care is your responsibility. |
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Personal injury or death can result from sudden work tool movement. Sudden movement of the work tool can cause injury to persons near the work tool. To prevent injury or death, make sure that the area around the work tool is clear of personnel and obstructions before operating the work tool. |
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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. |
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Personal injury or death can result from improperly checking for a leak. Always use a board or cardboard when checking for a leak. Escaping air or fluid under pressure, even a pin-hole size leak, can penetrate body tissue causing serious injury, and possible death. If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury. |
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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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| Illustration 1 | g00104545 |
Prevent the machine from movement. Park the machine on a level surface.
Attach a "Do Not Operate" warning tag or a similar warning tag to the start switch before you service the equipment . These warning tags (Special Instruction, SEHS7332) are available from your AVSpare dealer.
Required Parts
| Parts List for 451-7490 Pump Lines Gp Revision -04 | |||
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| Item | Qty | Pt. No. | Part Name |
| (1) | 1 | Hose | |
| (2) | 1 | Tee As | |
| (3) | 1 | Strap | |
| (4) | 1 | Flange | |
| (5) | 8 | Bolt | |
| (6) | 8 | Hard Washer | |
| (7) | 1 | Hose As | |
| (8) | 1 | Pipe As | |
| (9) | 1 | Hose As | |
| (10) | 1 | Flange | |
| (11) | 1 | Block | |
| (12) | 1 | Hose As | |
| (13) | 1 | Pipe As | |
| (14) | 1 | Adapter | |
| (15) | 4 | Bolt | |
| (16) | 4 | Bolt | |
| (17) | 1 | Connector As | |
| (18) | 1 | Connector As | |
| (19) | 1 | Elbow As | |
| (20) | 1 | Connector As | |
| (21) | 1 | Plug As | |
| (22) | 1 | Quick Disconnect Coupler As | |
| (23) | 1 | Rectangular Seal | |
| (24) | 2 | Half Flange | |
| (25) | 3 | O-Ring Seal | |
| (26) | 1 | O-Ring Seal | |
| (27) | 1 | O-Ring Seal | |
| (28) | 1 | Dust Cap | |
| (29) | 8 | Hard Washer | |
| (30) | 4 | Bolt | |
| (31) | 4 | Bolt | |
| (32) | 1 | O-Ring Seal | |
| (33) | 4 | Hose Clamp | |
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| Illustration 2 | g06028658 |
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Installation Procedure
- Install the components of the pump lines group as shown above.
Show/hide table
Illustration 4 g06028675 (7) 452-5648 Hose As
(9)459-4125 Hose As
(14)101-7198 Adapter
(17)148-8327 Connector As
(19)148-8347 Elbow As
(20)153-6242 Connector As
(26)4K-1388 O-Ring Seal - Connect hose (7) to the front lines group.
- Attach hose (9) to the front lines group and the drain tube.
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| Illustration 3 | g06028667 |
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(1) (2) (3) (4) (5) (6) (7) (8) (10) (11) (12) (13) (15) (16) (18) (21) (22) (23) (24) (25) (27) (28) (29) (30) (31) (32) (33) | |
