13
98-05242-ENUS R4
Matrix
®
Pro GS
Valve test
The Valve Test verifies if steering is directed correctly. It can also be
used to test the amount of time to steer the wheels from full left to full
right (lock to lock) for non-proportional valves.
For non-proportional valves, the amount of time for left-to-right or right-
to-left (lock to lock) will be established by mechanically adjusting oil
flow through the valve.
For a UniPilot ESM, the amount of time for left-to-right or right-to-left
(lock to lock) will be established by adjusting the Max Duty Cycle value.
For recommendations and factory settings for the FieldPilot or UniPilot
setup values, see chart on page 21.
1.
Select
Valve Test
.
2. While the vehicle is moving in a slow forward motion, turn
the wheels all the way to the left.
3. Press RIGHT arrow .
4. Press the engage/disengage switch or foot switch to activate the
test. This will start a timer as well as turn the vehicle to the right.
WARNING!
When using a UniPilot, the UniPilot will move the
steering wheel very quickly. Keep loose clothing, hair and
hands away from the steering wheel while preforming this test.
5. Press the engage/disengage switch or foot switch when the wheels
are all the way to the right. The time displayed is the lock to lock
time.
6. While the vehicle is moving in a slow forward motion, turn
the wheels all the way to the right.
7. Press LEFT arrow .
8. Press the engage/disengage switch or foot switch to activate the
test. This will start a timer as well as turn the vehicle to the left.
WARNING!
When using a UniPilot, the UniPilot will move the
steering wheel very quickly. Keep loose clothing, hair and
hands away from the steering wheel while preforming this test.
9. Press the engage/disengage switch or foot switch when the wheels
are all the way to the right. The time displayed is the lock to lock
time.
10. Compare the lock-to-lock time with the recommended time.
11. Adjust the valve oil flow as needed and repeat test as needed.
Figure GS-25: Valve Test
Valve diagnostics
The valve diagnostic test verifies if the valve is operating correctly.
This test is not necessary for UniPilot.
NOTE: The diagnostic tests do not require that the vehicle is in motion.
A valid GPS signal is not required.
Figure GS-26: Valve Diagnostics
