CONTROL MANIFOLD (STEERING BACKUP) TEST
WARN I N G
The batteries must have a normal charge and the secondary steering electrical system
must be okay. A low charge condition, or any defect in the battery, battery cells, or
electrical circuit can cause loss of secondary steering and could result in personal injury
and/or damage to the machine.
N OT E
Once the secondary steering system has bee activated, it should remain ON no more
than two minutes. This should be sufficient time to safely steer the machine to a stop.
When the machine is stopped, turn the key start switch to the OFF position in order to turn
off secondary steering. Prolonged use of the secondary steering system will cause the
electric motor to overheat and cause damage to its components.
Complete the test procedure Magnetic Switch (Secondary Steering Relay) Test in this
work package to verify that the secondary steering pump functions correctly before
starting the following procedure.
1. Park machine on hard, level surface (TM 5-3805-293-10).
2. Start engine (TM 5-3805-293-10).
3. Depress secondary steering test switch (TM 5-3805-293-10).
N OT E
The secondary steering pump will runfor a maximum of 10-second intervals.
Verify that the movement of the front wheels responds with each steering input.
4. While secondary steering test switch is held in the TEST position, provide the following steering inputs with the
left hand joystick:
a. Steer left
b. Steer center
N OT E
The alert indicator for the secondary steering should remain amber in color during the test.
If the test was not successful, the alert indicator for the secondary steering will be red in
Verify that diagnostic or event codes do not occur.
a. If diagnostic or event codes are active, repair diagnostic or event codes (WP 0010).
b. If diagnostic or event codes are not active, proceed to step 6.
6. Stop engine (TM 5-3805-293-10).
END OF TASK