TUBE AS 1994523 - Caterpillar

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.
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.
Parts Section
Table 1
462-2509 Coupler Control Ar Revision -00
Qty Part Number Description Media
1 457-5320 Chassis Wiring Gp GEHS0885
1 456-6033 Front Lines Gp GEHS0886
1 453-8720 Cab Wiring Gp GEHS0791
1 448-4756 Film Gp --
1 343-8342 Hydraulic Lines Kit REHS3854 Installation of the 448-4756 Film Gp
Illustration 2 g02454257
Left side view of the cab
(1) 268-4531 Film
(2) 268-8872 Film (For U.S)
(2) 269-0121 Film (For INTL) Tuning Section
Updating ECM Settings: Reference the following description for selecting the proper "Quick Coupler Configuration". There are either one or two parameters to update, depending on the machine software and system installed.
Parameter: "Quick Coupler Installation Status" (ET) "Quick Coupler" (Monitor)
Not Installed: "Quick Coupler" control system is not installed on the machine.
Installed without Coupler Accelerator: This setting is the traditional North American setting that only applies voltage to the coupler valve when the switch is flipped. This setting is used with the "Center Lock" pin grabber, and new ISO CAT pin grabber couplers. This setting can also be used on the machines with the universal coupler.
Installed with Coupler Accelerator: This setting is used on machines with universal coupler control circuit, traditionally EAME machines. Except for ACS machines 336E H, 336FXE, 374F, 390F, the machine must have the added hardware for this feature. In addition to applying voltage to the "Quick Coupler" valve, the added hardware also energizes another solenoid that causes pump pressure to rise. This is