Electrical System Quick Checks; Electrical System Quick Checks; Vdc Battery Test (Open Circuit Test); Engine Charging System Test - Toro Reelmaster 5010- H Service Manual

Electrical System Quick Checks

12 VDC Battery Test (Open Circuit Test)

Use a digital multimeter to measure the battery voltage.
Remove battery cover to access the battery at the rear
of the machine. Set the multimeter to the DC volts set-
ting. The battery should be at a temperature of 60
o o o
100 F (16 to 38 C). The ignition switch should be in
the OFF position and all accessories turned off. Connect
the positive (+) multimeter lead to the positive battery
post and the negative (- ) multimeter lead to the negative
battery post. Record the battery voltage.
NOTE: This test provides a relative condition of the bat-
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).

Engine Charging System Test

This is a simple test used to determine if the engine
charging system is functioning. It will tell you if the charg-
ing system has an output, but not its capacity.
Remove battery cover to access the battery at the rear
of the machine. Use a digital multimeter set to DC volts.
Connect the positive (+) multimeter lead to the positive
battery post and the negative (- ) multimeter lead to the
negative battery post. Keep the test leads connected to
the battery posts and record the initial 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
charge and battery temperature, the battery voltage will
increase at different rates as the battery charges.

Glow Plug System Test

This is a fast, simple test that can help to determine the
integrity and operation of your Reelmaster 5010- H glow
plug system. The test should be run anytime 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/
DC Current Transducer). Properly connect the ammeter
to the digital multimeter (refer to manufacturer's instruc-
tions) and set the multimeter to the correct scale. With
the ignition switch in the OFF position, place the
Electrical System
Voltage Measured
12.68 volts or above
12.45 volts
o
to
12.24 volts
12.06 volts
11.89 volts or below
Start the engine and run at high idle (3000 RPM). Allow
the battery to charge for at least three (3) minutes. Re-
cord the battery 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
Battery Voltage after 3 Minute Charge
Difference
ammeter pickup around the main glow plug 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 ON/PREHEAT and record the multimeter
results.
The Reelmaster 5010- H glow plug system should have
a reading of approximately 27 Amps total (9 Amps per
glow plug). If low current reading is observed during the
test, one (or more) glow plugs is faulty.
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Battery Charge Level
Fully charged (100%)
75% charged
50% charged
25% charged
0% charged
= 12.30 V
= 12.95 V
= +0.65 V
Reelmaster 5010- H