Install frame lock pin (1) in the hole provided in
articulation yoke (2).
Connect the 0 to 25 000 kPa (0 to 3600 psi) pressure
gauge from the fittings group, to pressure tap (1). This
pressure gauge will measure the steering relief valve
Start and run the engine at high idle.
(1) Pressure tap.
Turn the steering wheel to the left until the steering relief
valve opens. Record the reading on the gauge. The relief
valve pressure should be 13 500 500 kPa (1960 75 psi).
Steer Pump Priority Flow Test
Apply the parking brake.
Install the frame lock pin in the hole provided in the
1. Priority flow line. 2. Charge circuit line (secondary flow).
Install the flowmeters in lines (1) and (2). Line (1)
supplies priority oil flow to the steering circuit. Line (2)
supplies secondary oil flow to the charge circuit.
Start and run the engine at 2350 RPM (high idle).
Steer Pump Flow 2350 RPM (gpm)
Measure the flow rate in lines (1) and (2). Add the
measurements together to obtain total flow. Refer to
NOTE: The flows in lines (1) and (2) can be measured
separately with one flowmeter. The resulting
flows can then be added together to obtain total