2784272 ENGINE AR-PRIMARY Caterpillar parts
C6.6
Rating:
Alternative (cross code) number:
CA2784272
278-4272
2784272
CA2784272
278-4272
2784272
INDUSTRIAL ENGINE,
Related part:
2784272
BLOCK GP-LONG
20R2698
R
Compatible equipment models: 2784272:
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Information:
Introduction
Do not perform any procedure in this Special Instruction until you have read the information and you understand the information.Safety Section
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.
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.
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.
Illustration 1 g00104545Prevent 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 or to the controls before you service the equipment. These warning tags (Special Instruction, SEHS7332) are available from your Caterpillar dealer.Required Parts
Table 1
Parts List for 502-1170 Pilot Lines Gp Revision -00
Item Qty Part No. Description
(1) 1 457-9835 Hose As
(2) 2 148-8378 Elbow As
Illustration 2 g03733617
502-1170 Pilot Lines Gp
Installation Procedure
Illustration 3 g03733618
(1) 457-9835 Hose As
Connect hose (1) to port "C4" of the shuttle valve.
Illustration 4 g03733631
Bottom view of control valve
(X) 104-8973 Hose As
(1) 457-9835 Hose As
(2) 148-8378 Elbow As
Connect the other end of hose (1) to port "aR5" of the control valve.
Install elbow assembly (2) into port "aR2" of the control valve.
Reconnect hose the existing hose (X).
Illustration 5 g03733632
(Y) 366-0971 Hose As
(2) 148-8378 Elbow As
Install elbow assembly (2) into port "bR2" of the control valve.
Reconnect hose the existing hose (Y).
Do not perform any procedure in this Special Instruction until you have read the information and you understand the information.Safety Section
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.
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.
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.
Illustration 1 g00104545Prevent 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 or to the controls before you service the equipment. These warning tags (Special Instruction, SEHS7332) are available from your Caterpillar dealer.Required Parts
Table 1
Parts List for 502-1170 Pilot Lines Gp Revision -00
Item Qty Part No. Description
(1) 1 457-9835 Hose As
(2) 2 148-8378 Elbow As
Illustration 2 g03733617
502-1170 Pilot Lines Gp
Installation Procedure
Illustration 3 g03733618
(1) 457-9835 Hose As
Connect hose (1) to port "C4" of the shuttle valve.
Illustration 4 g03733631
Bottom view of control valve
(X) 104-8973 Hose As
(1) 457-9835 Hose As
(2) 148-8378 Elbow As
Connect the other end of hose (1) to port "aR5" of the control valve.
Install elbow assembly (2) into port "aR2" of the control valve.
Reconnect hose the existing hose (X).
Illustration 5 g03733632
(Y) 366-0971 Hose As
(2) 148-8378 Elbow As
Install elbow assembly (2) into port "bR2" of the control valve.
Reconnect hose the existing hose (Y).
