Terex Genie GS-1330m Service And Repair Manual page 80

Service and Repair Manual
Manifolds
Note: If testing a single terminal coil, connect the
negative lead to the internal metallic ring at either
end of the coil.
1 multimeter
2 9V DC battery
3 10Ω resistor
4 coil
Note: Dotted lines in illustration indicate a reversed
connection as specified in step 6.
5 Momentarily connect the positive lead from
the multimeter to the positive terminal on the
9V battery. Note and record the reading.
6 At the battery or coil terminals, reverse the
connections. Note and record the current
reading.
Result: Both current readings are greater than
0 mA and are different by a minimum of 20%.
The coil is good.
Result: if one or both current readings are
greater than 0 mA, or if the two current
readings do not differ by a minimum of 20%,
the coil and/or its internal diode are faulty and
the coil should be replaced.
66 GS ™ -30m • 32m • 30 • 32 • 46 • 55
August 2021
Part No. 1309020GT