Testing The Glow Plug System; Checking The Operation Of The Interlock Switches - Toro Groundsmaster 360 Service Manual

Testing the Charging System (continued)

Testing the Glow Plug System

Checking the Operation of the Interlock Switches

Electrical System: Electrical System Quick Checks
Battery Voltage Table
At least 0.50 V over the initial battery voltage.
Initial battery voltage
Battery voltage after 3 minutes charge
Difference
This is a fast, simple test that helps to determine the integrity and operation of
the Groundsmaster glow plug system. Perform this test when you find hard
starting (cold engine) on a diesel engine equipped with a glow plug system.
Tool(s) required: Digital multimeter and/or inductive Ammeter (AC/DC Current
Transducer).
Test instructions: Properly connect the ammeter to the digital multimeter (refer
to the manufacturer's instructions). Set the multimeter to the correct scale.
With the key switch in the O
main glow plug power supply wire and read the meter prior to activating the
glow plug system. Adjust the meter to read zero (if applicable). Activate the
glow plug system by turning the key switch to the R
multimeter results.
The glow plug system of the Groundsmaster 360 machines should have a
reading of approximately 21 A. If low current reading is observed, 1 (or more) of
the glow plugs is damaged.
Do not disconnect the safety switches. They are for the operator's
protection.
Check the operation of the interlock switches daily for proper
operation.
Replace any malfunctioning switches before operating the machine.
Interlock switch operation is described in the Traction Unit Operator's Manual.
The Groundsmaster 360 machines are equipped with a Toro Electronic Controller
(TEC) which monitors interlock switch operation. Testing of individual interlock
switches is included in the
Note: Use the InfoCenter display to test the Toro Electronic Controller inputs
and outputs before further troubleshooting of an electrical problem on your
Groundsmaster.
position, place the ammeter pickup around the
FF
CAUTION
Testing the Electrical Components (page
Page 5–42
= 12.30 V
= 12.85 V
= +0.55 V
position and record the
UN
5–49).
Groundsmaster 360
16225SL Rev C