Komatsu 830E-AC Shop Manual page 774

b. Gently bottom out the steering relief valve
using a 5 mm metric allen wrench. Refer to
Figure 10-3 for relief valve location.
4. Check flow amplifier shock & suction valve
pressure. Pressure check can be accomplished
by steering away from steering cylinder stops,
then steering into stop and continue to turn
steering wheel. Gauge should read 19,996 kPa
(2900 psi). Move the gauge connection to the
other diagnostic port to test the pressure of the
other valve. If shock & suction valve pressure is
not correct, replace valves.
FIGURE 10-2. FLOW AMPLIFIER VALVE
L10-6
NOTE: The shock & suction valves are only serviced
as complete units, and cannot be adjusted while
installed in the flow amplifier valve.
5. After checking shock & suction valves, lower
the steering relief pressure to 17,237 kPa (2500
psi). Steering relief pressure can be adjusted by
steering full left or right and adjusting steering
pressure at the flow amplifier while holding
slight pressure on the steering wheel. Replace
the external steering relief valve plug.
6. Remove test equipment and reconnect all lines
and hoses to the proper location.
FIGURE 10-3. FLOW AMPLIFIER VALVE
Hydraulic Check-out Procedure L10028