
February 2015
Service Manual
Manifolds
Part No. 825591 S-
60 • S
-65
• S
-
60 TRAX • S
-
65 TRAX • S
-
60 HC • S
-
60X • S
-60XC
159
How t o T est a Coil Di ode
How to Test a Coil Diode
Genie incorporates spike suppressing diodes in all
of its directional valve coils except proportional
valves and those coils with a metal case. 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,
How to
Test a Coil
.
2
Connect a 10
Ω
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.
Note: If testing a single-terminal coil, connect the
negative lead to the internal metallic ring at either
end of 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 Genie Lift Guard S-60
Page 238: ...Service Manual February 2015 216 Deutz D 2 9 L4 Engine Wire Harness ...
Page 239: ...February 2015 Service Manual 217 Perkins 404F 22 Engine Wire Harness ...
Page 243: ...February 2015 Service Manual 221 Electrical Schematic Options Deutz D 2 9 L4 ...
Page 246: ...Service Manual February 2015 224 Electrical Schematic Options Perkins 404F 22 ...
Page 247: ...February 2015 Service Manual 225 Wiring Diagram 3kW Hydraulic Generator ...
Page 250: ...Service Manual February 2015 228 Wiring Diagram 12kW Hydraulic Generator Welder Option ...
Page 251: ...February 2015 Service Manual 229 Electrical Schematic 12kW Hydraulic Generator Welder Option ...
Page 254: ...Service Manual February 2015 232 Hydraulic Schematic 12kW Hydraulic Generator Welder Option ...
Page 255: ...February 2015 Service Manual 233 Hydraulic Schematics Hydraulic Schematic 2WD Models ...
Page 258: ...Service Manual February 2015 236 Hydraulic Schematic 4WD Models ...
Page 262: ...Service Manual February 2015 240 Electrical Schematic Ford MSG 425 EFI Models ANSI CSA ...
Page 271: ...February 2015 Service Manual 249 Electrical Schematic Deutz D2011L03i Models ANSI CSA ...
Page 274: ...Service Manual February 2015 252 Electrical Schematic Deutz D2011L03i Models ANSI CSA ...
Page 275: ...February 2015 Service Manual 253 Electrical Schematic Deutz TD2011L04i Models ANSI CSA ...
Page 278: ...Service Manual February 2015 256 Electrical Schematic Deutz TD2011L04i Models ANSI CSA ...
Page 287: ...February 2015 Service Manual 265 Electrical Schematic Deutz D 2 9 L4 Models ANSI CSA ...
Page 290: ...Service Manual February 2015 268 Electrical Schematic Deutz D 2 9 L4 Models ANSI CSA ...
Page 299: ...February 2015 Service Manual 277 Electrical Schematic Perkins 404D 22 Models ANSI CSA ...
Page 302: ...Service Manual February 2015 280 Electrical Schematic Perkins 404D 22 Models ANSI CSA ...
Page 311: ...February 2015 Service Manual 289 Electrical Schematic Perkins 404F 22 Models ANSI CSA ...
Page 314: ...Service Manual February 2015 292 Electrical Schematic Perkins 404F 22 Models ANSI CSA ...
Page 390: ...Service Manual February 2015 368 Electrical Schematic Ford MSG 425 EFI Models CE ...
Page 399: ...February 2015 Service Manual 377 Electrical Schematic Deutz D2011L03i Models CE ...
Page 402: ...Service Manual February 2015 380 Electrical Schematic Deutz D2011L03i Models CE ...
Page 403: ...February 2015 Service Manual 381 Electrical Schematic Deutz TD2011L04i Models CE ...
Page 406: ...Service Manual February 2015 384 Electrical Schematic Deutz TD2011L04i Models CE ...
Page 415: ...February 2015 Service Manual 393 Electrical Schematic Perkins 404D 22 Models CE ...
Page 418: ...Service Manual February 2015 396 Electrical Schematic Perkins 404D 22 Models CE ...
Page 427: ...February 2015 Service Manual 405 Electrical Schematic S 60 HC CE ...
Page 430: ...Service Manual February 2015 408 Chassis Wiring Diagram S 60 HC CE ...
Page 431: ...February 2015 Service Manual 409 Ground Control Box Terminal Strip Wiring Diagram S 60 HC CE ...
Page 434: ...Service Manual February 2015 412 Platform Control Box Wiring Diagram S 60 HC CE ...
Page 438: ...Service Manual February 2015 416 Electrical Schematic Ford MSG 425 EFI Models AS ...
Page 447: ...February 2015 Service Manual 425 Electrical Schematic Deutz D2011L03i Models AS ...
Page 450: ...Service Manual February 2015 428 Electrical Schematic Deutz D2011L03i Models AS ...
Page 451: ...February 2015 Service Manual 429 Electrical Schematic Deutz TD2011L04i Models AS ...
Page 454: ...Service Manual February 2015 432 Electrical Schematic Deutz TD2011L04i Models AS ...
Page 463: ...February 2015 Service Manual 441 Electrical Schematic Perkins 404D 22 Models AS ...
Page 466: ...Service Manual February 2015 444 Electrical Schematic Perkins 404D 22 Models AS ...
Page 475: ......