CAUTION: Do not turn the steering wheel when the
engine is running and a low pressure gauge is installed
in the steering circuit. If the steering wheel is turned,
the gauge will be damaged.
2. Start the engine and run it at high idle.
3. The indication on each gauge must be 40 ±10 psi
(2.8 ± 0.7 kg/cm2) (276 ± 69 kPa). The difference
between the two indications must not be more than
10 psi (0.7 kg/cm2) (69 kPa).
If the pressures are not correct, the valve spool is
not in its center position. Shims (5) are used to make
the adjustment to the spool position.
STEERING CONTROL VALVE
3. Spring (outer). 4. Spring (inner). 5. Flow
Add shims to increase the pressure at valve (I)
and decrease the pressure at valve (2).
If a pressure increase is necessary at valve (2),
remove shims (5). This will also decrease the
pressure at valve (1).
AIR IN THE STEERING CIRCUIT
Use the procedure that follows to remove air from
the steering system before and after tests are made:
1. Start the engine and turn the machine against either
the right or the left stop.
2. With the engine running and the machine against
the stop, open valves (I) and (2).
STEERING LINES (TOP OF GOOSENECK)
1. Bleed valve for right turn circuit. 2. Bleed valve
for left turn circuit.
3. When only oil (with no air) runs out of the open
valves, close the valves.
4. Turn the machine against the stop in the other
direction and open the valves again.
5. Close both valves when no air can be seen in the oil
that runs out of the open valves.