June 2022
Service and Repair Manual
Manifolds
Part No. 1268555GT
Z
®
-62/40
79
How to Test a Coil Dio de
How to Test a Coil Diode
Properly functioning coil diodes protect the
electrical circuit by suppressing voltage spikes.
Voltage spikes naturally occur within a function
circuit following the interruption of electrical current
to a coil. Faulty diodes can fail to protect the
electrical system, resulting in a tripped circuit
breaker or component damage.
Electrocution/burn hazard.
Contact with electrically charged
circuits could result in death or
serious injury. Remove all rings,
watches and other jewelry.
1 Test the coil for resistance. Refer to Repair
Procedure,
How to Test a Coil
.
2 Connect a 10W resistor to the negative
terminal of a known good 9V DC battery.
Connect the other end of the resistor to a
terminal on the coil.
Resistor 10
Ω
Genie part number 27287
Note: The battery should read 9V DC or more
when measured across the terminals.
1 multimeter
2 9v DC battery
3 10
Ω
resistor
4 coil
Note: Dotted lines in illustration indicate a reversed
connection as specified in step 6.
3 Set a multimeter to read DC current.
Note: The multimeter, when set to read DC
current, should be capable of reading up to
800 mA.
4 Connect the negative lead to the other
terminal on the coil.
5 Momentarily connect the positive lead from
the multimeter to the positive terminal on the
9V DC battery. Note and record the current
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.
7 Result: If one or both of the current readings
are 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.
Summary of Contents for Genie Z-40
Page 69: ...June 2022 Service and Repair Manual Manifolds Part No 1268555GT Z 62 40 55 ...
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Page 73: ...June 2022 Service and Repair Manual Manifolds Part No 1268555GT Z 62 40 59 ...
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Page 89: ...June 2022 Service and Repair Manual Manifolds Part No 1268555GT Z 62 40 75 ...
Page 158: ...Service and Repair Manual June 2022 144 Deutz D 2 9 L4 Engine Wire Harness ...
Page 159: ...June 2022 Service and Repair Manual 145 Deutz TD 2 2 L3 Engine Wire Harness ...
Page 162: ...Service and Repair Manual June 2022 148 Perkins 404F E22T Engine Wire Harness ...
Page 163: ...June 2022 Service and Repair Manual 149 Perkins 404F 22 Engine Wire Harness ...
Page 166: ...Service and Repair Manual June 2022 152 Electrical Schematic Options All Models ...
Page 167: ...June 2022 Service and Repair Manual 153 Wiring Diagram 3kW Hydraulic Generator ...
Page 170: ...Service and Repair Manual June 2022 156 Wiring Diagram 12kW Hydraulic Generator Welder Option ...
Page 173: ...June 2022 Service and Repair Manual 159 Wiring Diagram Lift Drive Option ...
Page 176: ...Service and Repair Manual June 2022 162 Wiring Diagram Platform Overload Option ...
Page 180: ...Service and Repair Manual June 2022 166 Wiring Diagram Work Lights Option ...
Page 181: ...June 2022 Service and Repair Manual 167 Wiring Diagram Aircraft Protection Option ...
Page 184: ...Service and Repair Manual June 2022 170 Wiring Diagram Platform Control Box Heater Option ...
Page 186: ...Service and Repair Manual June 2022 172 Fuel Level Sensing Option ...
Page 202: ...Service and Repair Manual June 2022 188 Electrical Schematic Ford MSG 425 EFI Models ANSI CSA ...
Page 223: ...June 2022 Service and Repair Manual 209 Electrical Schematic Deutz D 2 9 L4 Models ANSI CSA ...
Page 226: ...Service and Repair Manual June 2022 212 Electrical Schematic Deutz D 2 9 L4 Models ANSI CSA ...
Page 235: ...June 2022 Service and Repair Manual 221 Electrical Schematic Perkins 404F 22 Models ANSI CSA ...
Page 238: ...Service and Repair Manual June 2022 224 Electrical Schematic Perkins 404F 22 Models ANSI CSA ...
Page 262: ...Service and Repair Manual June 2022 248 Electrical Schematic Ford MSG 425 EFI Models AS CE ...
Page 283: ...June 2022 Service and Repair Manual 269 Electrical Schematic Deutz TD 2 2 L3 Models CE ...
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