Testing The Glow Plug System; Checking The Operation Of The Interlock Switches - Toro Groundsmaster 7210 Service Manual

Testing the Charging System (continued)

Testing the Glow Plug System

Checking the Operation of the Interlock Switches

Groundsmaster 7210
16222SL Rev C
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
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 and record the multimeter results.
The glow plug system of the Groundsmaster 7210 machine should have a
reading of approximately 21 A.
Check the operation of the interlock switches daily for proper
operation.
Replace any malfunctioning switches before operating the machine.
The Groundsmaster 7210 machine is equipped with a Standard Control Module
(SCM) which monitors the interlock switch operation. The information on the
SCM is described in Testing the Electrical Components (page
of the individual interlock switches is included in the
Components (page 5–23).
Note: The machine is equipped with an interlock switch on the parking brake.
The engine shuts off if the traction control levers are moved from the N
position with the parking brake engaged.
LOCK
1. Ensure that all the bystanders are away from the area of operation. Keep
your hands and feet away from the cutting deck (or implement).
2. With the operator in the seat, the engine must not start with either the PTO
switch in the O position or the traction control levers moved from the
N
N position. Correct the problem if the machine is not operating
EUTRAL LOCK
properly.
position, place the ammeter pickup around the main
FF
CAUTION
Page 5–21 Electrical System: Electrical System Quick Checks
= 12.30 V
= 12.85 V
= +0.55 V
5–23). Testing
Testing the Electrical
EUTRAL