MAIN HYDRAULIC PUMP PRESSURE TEST
Before performing any troubleshooting in bowl, move ejector
forward and engage the ejector lock. Failure to comply may result
in severe injury or death to personnel.
Ensure globe valve is fully opened prior to starting vehicle. A fully
or partially closed valve will cause immediate high pressure.
Failure to comply may result in damage to equipment and injury or
death to personnel.
Have suitable container ready to catch oil.
Install coupling tube (1), globe valve (2), tee (3), and pressure measuring device (4)
between HYDR FLTR-IN-13R hose (5) and high-pressure filter inlet port 13R.
Turn globe valve (2) counterclockwise until fully opened.
Have assistant start engine and allow engine to idle (750-800 rpm). Slowly close globe
valve (2) until pressure reaches 3,950-4,050 psi (27,235-27,925 kPa).
Open globe valve (2). Stop engine; relieve hydraulic pressure.
Notify Direct Support maintenance.