Installation of the <NOBR>491-4423</NOBR> Auxiliary Control Ar (Medium Pressure) on Certain Hydraulic Excavators {5051, 5070, 5073} Caterpillar


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Installation of the <NOBR>491-4423</NOBR> Auxiliary Control Ar (Medium Pressure) on Certain Hydraulic Excavators {5051, 5070, 5073} [M0066424]
HYDRAULIC SYSTEM
AUXILIARY GP-HYDRAULIC
Installation of the <NOBR>491-4423</NOBR> Auxiliary Control Ar (Medium Pressure) on Certain Hydraulic Excavators {5051, 5070, 5073}
1.1. Introduction
2.1. Safety Section
3.1. Required Parts
4.1. Reference Section
Excavator
312F (S/N: KMK1-10000)
313F (S/N: NLG1-10000; PRG1-10000)
314F (S/N: LFC1-10000)
Work Tool
HYDRAULIC KIT (S/N: HKF1-UP)

Introduction

Note: Drain the hydraulic fluid from the hydraulic tank before opening the hydraulic system. Remember to fill the hydraulic tank with hydraulic fluid once the installation is complete.

Reference: Service Guide, GEHS1181, "Tool Control Systems Supplemental Guide"

Reference: Service Guide, SEBD0512, "AVSpare Service Welding Guide"

Reference: Special Instruction, REHS1841, "General Welding Procedures"

Reference: Torque Specifications, SENR3130, "Torque Specifications"

Safety Section



Illustration 1g00104545

Attach a "Do Not Operate" warning tag or a similar warning tag to the start switch or to the controls before you service the equipment. These warning tags (Special Instruction, SEHS7332) are available from your AVSpare dealer.

------ WARNING! ------

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.



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.


------ WARNING! ------

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 work tools have been lowered to the ground, and the 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.


------ WARNING! ------

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.


------ WARNING! ------

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.


------ WARNING! ------

Hot oil and hot components can cause personal injury. Do not allow hot oil or hot components to contact skin.


Required Parts

Table 1
491-4423 Auxiliary Control Ar (Medium Pressure)"Revision - 00" 
Qty  Part No.  Description  Media 
(1)  342-1891  Auxiliary Pump and Mounting Gp  GEHS0357 
(1)  350-8165  Medium Pressure Wiring  GEHS0393 
(1)  356-9093  Front Lines Gp  GEHS0394 
(1)  356-9097  Pump Lines Gp  GEHS0395 
(1)  428-8276  Pilot Lines Gp  M0066426 
(1)  444-9174  Film 

Reference Section

Reference: Testing and Adjusting Section, UENR6166, "Process for Setting Up The Work Tool"

Reference: Testing and Adjusting Section, UENR6166, "Calibration"

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