Installation Procedure for the <NOBR>491-0551</NOBR> Front Lines Gp On Certain Hydraulic Excavators {5057} Caterpillar


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Installation Procedure for the <NOBR>491-0551</NOBR> Front Lines Gp On Certain Hydraulic Excavators {5057} [M0066920]
HYDRAULIC SYSTEM
LINES GP-FRONT
Installation Procedure for the <NOBR>491-0551</NOBR> Front Lines Gp On Certain Hydraulic Excavators {5057}
1.1. Introduction
2.1. Safety Section
3.1. Required Parts
4.1. Installation Procedure
Excavator
374F (S/N: AT21-UP; AP41-UP; DNM1-UP)
Work Tool
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

------ 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.


------ 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! ------

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.


------ 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.



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, PERJ1017, "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.




Illustration 1g00104545

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

Table 1
Parts List for 491-0551 Front Lines Gp Revision -00 
Item  Qty  Pt. No.  Part Name 
(1)  4I-9521  Marker Band (Red) 
(2)  4I-9522  Marker Band (Yellow) 
(3)  6E-3184  Plug 
(4)  7K-1181  Cable Strap 
(5)  123-4750  Check Valve As 
(6)  168-1968  Tee As 
(7)  328-2035  Solenoid Valve and Manifold Gp 
(8)  454-0504  Check Valve Gp 
(9)  457-9869  Spacer 
(10)  464-8577  Hose As 
(11)  491-0499  Support As 
(12)  491-0500  Hose As 
(13)  491-0501  Hose As 
(14)  491-0502  Hose As 
(15)  491-0503  Hose As 
(16)  491-0504  Hose As 
(17)  491-0505  Hose As 
(18)  491-0506  Hose As 
(19)  148-8310  Adapter As 
(20)  148-8336  Connector As 
(21)  148-8353  Elbow As 
(22)  148-8378  Elbow As 
(23)  148-8407  Plug As 
(24)  164-5546  Tee As 
(25)  164-5567  Quick Disconnect Coupler As 
(26)  164-9869  Connector As 
(27)  275-1442  Clip 
(28)  275-1443  Clip 
(29)  333-4609  Grommet 
(30)  3J-1907  O-Ring Seal 
(31)  6V-0852  Dust Cap 
(32)  6V-8076  Elbow 
(33)  8T-4121  Hard Washer 
(34)  8T-4136  Bolt 
(35)  8T-4137  Bolt 
(36)  8T-4198  Bolt 


Illustration 2g06021694
491-0551 Front Lines Gp

Installation Procedure



    Illustration 3g06364537
    Assembly "A"
    (7A) 328-2035 Solenoid Valve and Manifold Gp
    (7B) 328-2035 Solenoid Valve and Manifold Gp
    (8) 454-0504 Check Valve Gp
    (9) 457-9869 Spacer
    (10) 464-8577 Hose As
    (11) 491-0499 Support As
    (12) 491-0500 Hose As
    (18) 491-0506 Hose As
    (19) 148-8310 Adapter As
    (21) 148-8353 Elbow As
    (22) 148-8378 Elbow As
    (23) 148-8407 Plug As
    (30) 3J-1907 O-Ring Seal
    (33) 8T-4121 Hard Washer
    (34) 8T-4136 Bolt
    (36) 8T-4198 Bolt


    Illustration 4g06364550
    Assembly "A"
    (7A) 328-2035 Solenoid Valve and Manifold Gp
    (7B) 328-2035 Solenoid Valve and Manifold Gp
    (8) 454-0504 Check Valve Gp
    (9) 457-9869 Spacer
    (10) 464-8577 Hose As
    (11) 491-0499 Support As
    (12) 491-0500 Hose As
    (18) 491-0506 Hose As
    (19) 148-8310 Adapter As
    (21) 148-8353 Elbow As
    (22) 148-8378 Elbow As
    (23) 148-8407 Plug As
    (30) 3J-1907 O-Ring Seal
    (33) 8T-4121 Hard Washer
    (34) 8T-4136 Bolt
    (36) 8T-4198 Bolt

  1. Assemble the components of assembly "A" as shown.


    Illustration 5g06021708
    (1) 4I-9521 Marker Band (Red)
    (2) 4I-9522 Marker Band (Yellow)
    (13) 491-0501 Hose As
    (14) 491-0502 Hose As
    (15) 491-0503 Hose As
    (16) 491-0504 Hose As
    (17) 491-0505 Hose As

  2. Install assembly (A) onto the frame below the main pump.


    Illustration 6g06021903
    (1) 4I-9521 Marker Band (Red)
    (2) 4I-9522 Marker Band (Yellow)
    (14) 491-0502 Hose As
    (15) 491-0503 Hose As
    (16) 491-0504 Hose As
    (17) 491-0505 Hose As

  3. Connect hoses (14), (15), (16), and (17).


    Illustration 7g06021710
    (4) 7K-1181 Cable Strap
    (5) 123-4750 Check Valve As
    (13) 491-0501 Hose As
    (24) 164-5546 Tee As
    (25) 164-5567 Quick Disconnect Coupler As
    (31) 6V-0852 Dust Cap

  4. Connect hose (13) to the manifold block on the main pump that is closest to the engine in order to receive pump pressure.


    Illustration 8g06021805
    (1) 4I-9521 Marker Band (Red)
    (2) 4I-9522 Marker Band (Yellow)
    (3) 6E-3184 Plug
    (6) 168-1968 Tee As
    (14) 491-0502 Hose As
    (15) 491-0503 Hose As
    (16) 491-0504 Hose As
    (17) 491-0505 Hose As
    (22) 148-8378 Elbow As
    (27) 275-1442 Clip
    (28) 275-1443 Clip
    (29) 333-4609 Grommet
    (33) 8T-4121 Hard Washer
    (35) 8T-4137 Bolt

  5. Connect hoses (14) and (17) to the drain tube at the rear of the main control valve.

  6. Secure hoses (15) and (16) to the hydraulic tank.


    Illustration 9g06021808
    (1) 4I-9521 Marker Band (Red)
    (2) 4I-9522 Marker Band (Yellow)
    (4) 7K-1181 Cable Strap
    (15) 491-0503 Hose As
    (16) 491-0504 Hose As

  7. Route hoses (15) and (16) to the boom.

    Note: Oil flow goes to the cab side line (15) when the switch is in the locking position.

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