MIO-H29RRXS004270 Rev D
G&B Specialties Inc. 535 West 3
rd
Street, Berwick, PA, USA Tel: (570) 752-5901 Fax: (570) 752-6397
US Field Service: 570-441-6988; CAN Field Service 570-854-0482; www.rafna.com
-18-
E
LECTRICAL
S
YSTEM
T
ROUBLESHOOTING
The following basic test can be performed to check the integrity of the railgear electrical
system.
Should the railgear pump fail to operate, first check the fuse or the circuit breaker and all
wiring for shorts. Then the following test can be performed to verify the integrity of the pump
motor and pump solenoid.
1.
Pump motor test:
a)
Connect one end of a 2 gauge shunt wire to the pump motor power terminal and touch
the other end to the battery positive terminal.
b)
The pump motor should run upon touching the shunt wire.
c)
If the pump does not run, the pump is not properly grounded or the pump motor is
defective.
d)
If the pump motor runs, test for a defective solenoid.
2.
Solenoid test:
a)
Connect one end of a 14 gauge shunt wire to the switching terminal on the solenoid and
touch the other end to the battery positive terminal. If the pump does not operate the
solenoid is not properly grounded or it is defective. If the pump operates, the problem
lies with the fuse/circuit breaker, wiring and/or switches.
Should the pump start running immediately following turning on the respective dash switch,
the following tests can be performed to help locate the problem.
1.
Disconnect the wire from the switching terminal on the solenoid. If the pump continues to
run, then the solenoid is defective.
2.
Check all wiring and switches for shorts and / or loose terminals.
