HOSE 4484459 - Caterpillar

Table 1
Required Tools    
Part Number     Description     Quantity    
198-4240     Digital Pressure Indicator     1    
Personal injury can result if the machine moves while testing.If the machine begins to move during test, reduce the engine speed immediately and engage the parking brake.
Personal injury or death can result from sudden machine movement.Sudden movement of the machine can cause injury to persons on or near the machine.To prevent injury or death, make sure that the area around the machine is clear of personnel and obstructions before operating the machine.
Personal injury or death can result from escaping fluid under pressure.Escaping fluid under pressure, even a very small pin-hole size leak, can penetrate body tissue and cause 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.Always use a board or cardboard when checking for a leak.
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, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Illustration 1 g03052800
(1) Implement pump
Ensure that the hydraulic oil in the system is at normal operating temperature. Park the machine on a level surface.
Illustration 2 g03052856
Turn on the pilot system.
Illustration 3 g03052877
Location of the Implement Pump under Cab
Raise the cab in order to gain access to the implement piston pump.
Illustration 4 g03052837
(2) "GP2" port
Install a 198-4240 Digital Pressure Indicator on pressure tap at the "GP2" (2)
Start the engine and run the engine at high idle. Operate the blade in one direction. The pressure should be 17195 kPa (2495 psi) Note: The pressure for the port relief valve is 18995 kPa (2755 psi).