Service and Repair Manual
October 2016
Manifolds
74
S-80 • S-85 • S-80X
Part No. 1269074
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.
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 S-80
Page 16: ......
Page 76: ...Service and Repair Manual October 2016 Manifolds 60 S 80 S 85 S 80X Part No 1269074 ...
Page 86: ...Service and Repair Manual October 2016 Manifolds 70 S 80 S 85 S 80X Part No 1269074 ...
Page 144: ...Service and Repair Manual October 2016 128 Continental TME27 Engine Harness ...
Page 147: ...October 2016 Service and Repair Manual 131 S 80X Ground Control Box Wiring Diagram ...
Page 148: ...Service and Repair Manual October 2016 132 Deutz TD2 9 L4 Engine Harness ...
Page 151: ...October 2016 Service and Repair Manual 135 Perkins 404F 22T Engine Harness ...
Page 289: ...October 2016 Service and Repair Manual 273 Continental Options Schematic ...
Page 292: ...Service and Repair Manual October 2016 276 Deutz and Perkins Options Schematic ...
Page 293: ...October 2016 Service and Repair Manual 277 Platform Level Cutout CTE Option ...
Page 296: ...Service and Repair Manual October 2016 280 12 kW Hydraulic Generator Wiring Diagram ...
Page 297: ...October 2016 Service and Repair Manual 281 12 kW Hydraulic Generator Electrical Schematic ...
Page 300: ...Service and Repair Manual October 2016 284 Belt Driven Generator Option ...
Page 301: ...October 2016 Service and Repair Manual 285 Hydraulic Schematic 2WD Models ...
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