Greensmaster 3300/3400 Page 6 -- 23 Electrical System
Electrical System Quick Checks
Battery Test
Use a multimeter to measure the voltage between the
battery terminals.
Set the multimeter to the DC volts setting. The battery
should be at a temperature of 60
o
to 100
o
F(16
o
to 37
o
C). The ignition key should be off and all accessories
turned off. Connect the positive (+) meter lead to the
positivebatterypostandthenegative(--)meter leadthe
negative battery post.
NOTE: Thistestprovidesarelativeconditionofthebat-
tery. Load testing of the battery will provide additional
and more accurate information (see Battery Service in
the Service and Repairs section of this chapter).
Voltage Measured
Battery Charge Level
12.68 V (or higher) Fully charged (100%)
12.45 V 75% charged
12.24 V 50% charged
12.06 V 25% charged
11.89 V 0% charged
Charging System Test
Thisisa simpletestused todetermineifachargingsys-
tem is functioning. It will tell you if the charging system
has an output, but not its capacity.
Use a digital multimeter set to DC volts. C onnect the
positive (+) multimeter lead to the positive battery post
andthenegative(--)multimeterleadtothenegativebat-
tery post. Keep the test leads connected to the battery
posts and record the battery voltage.
NOTE: Upon starting the engine, the battery voltage
will drop and then should increase once the engine is
running.
NOTE: Depending upon the condition of the battery
chargeand batterytemperature, thebattery voltagewill
increase at different rates as the battery charges.
Start the engine and run at high idle. Allow the battery
to charge for at least three (3) minutes. Record the bat-
tery voltage.
After running the engine for at least three (3) minutes,
battery voltage should be at least 0.50 volt higher than
initial battery voltage.
An example of a charging system that is functioning:
At least 0.50 volt over initial battery voltage.
Initial Battery Voltage = 12.30 v
Battery Voltage after 3 Minute Charge = 12.85 v
Difference = +0.55 v
Glow Plug System Test (Greensmaster 3400)
This is a fast, simple test that can help to determine the
integrityandoperationofyourGreensmaster3400glow
plug system.Thetest should be runanytime hard start-
ing (cold engine) is encountered on a diesel engine
equipped with a glow plug system.
Use a digital multimeter and/or inductive ammeter (AC/
DCCurrentTransducer).Properlyconnecttheammeter
tothedigitalmultimeter (refertomanufacturers’instruc-
tions) and set the multimeter to the correct scale. W ith
the ignition switch in the OFF position, place the
ammeter pickup around the main glowplug power sup-
ply wire and read the meter prior to activating the glow
plug system. Adjust the meter to read zero (if applica-
ble). Activate the glow plug system by turning the igni-
tion switch to RUN and record the multimeter results.
TheGreensmaster 3400glow plugsystemshould have
areadingofapproximately27ampstotal(nine(9)amps
per glow plug). If low current reading is observed, one
(or more) of the glow plugs is faulty.
Electrical
System
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