BOX GP-JUNCTION 7E8930 - Caterpillar

Hot hydraulic oil under high pressure can remain in the components of the hydraulic system or the power train system after the engine has been stopped. The uncontrolled release of the hydraulic oil can cause sudden machine movement and can also result in the following conditions:
Burns
The penetration of body tissue
Other personal injury
DeathIf hydraulic oil penetrates body tissue, the injury must be treated immediately by a doctor who is familiar with this type of injury. Use a board or a piece of cardboard to check for a hydraulic oil leak. Make sure that all of the attachments have been lowered to the ground and that all trapped pressure has been released from the hydraulic system and the power train system. Also, make sure that the hydraulic oil is cool before the removal of any components or lines. Remove the hydraulic oil filler cap only when the engine is stopped and the filler cap is cool enough to touch with your bare hand.
Personal injury can result from rotating and moving parts. Stay clear of all rotating and moving parts.Never attempt adjustments while the machine is moving or the engine is running unless otherwise specified.The machine must be parked on a level surface and the engine stopped.Attach a "Do Not Operate" or similar warning tag to the start switch and controls before servicing, repairing, or making adjustments to the machine.
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.
Specifications
Refer to the pressures in the following tables when performing test and adjust procedures in this document.
Table 1
Brake System Charging Pressure
Engine Speed - Low Idle Pressure Actual
Test Parameter
Cut Out Pressure 17995 621 kPa (2610 90 psi)
Cut In Pressure 13996 586 kPa (2030 85 psi) Introduction
This story includes the following test:
Brake System Charging Pressure - Cut Out
Brake System Charging Pressure - Cut InRequired Tool
Illustration 1 g06221007
Tooling (T1) 198-4240 Digital Pressure Indicator Gp
Table 2
Required Tools
Item Qty Part Number Part Name
T1 1 198-4240 Digital Pressure Indicator Gp
T1a 1 198-4234 Digital Indicator
T1b 1 198-4238 Pressure Sensor Gp( 0 to 34,450 kPa (0 to 5,000 psi))
T1c 1 198-4236 Adapter Cable As Test Preparation
Note: Make sure that the filters and the screens are clean before you test any pressures. Make sure that the oil is at operating temperature before you perform these tests.Note: All tests and all adjustments must be made while the transmission oil is at normal operating temperature.
Move the machine to a smooth, horizontal location that is away from operating machines and away from personnel.
Permit only one operator on the machine. Keep all other personnel away from the machine or in