Electrical System Quick Checks

Battery Test (Open Circuit Test)

Note: This test provides a relative condition of the bat­ tery. Load testing of the battery will provide additional and more accurate information.

1.The battery temperature should be from 60_ to 100_ F. The ignition key should be off and all accessories turned off.

2.Set multimeter to the DC volts setting.

3.Connect positive (+) meter lead to the positive bat­ tery post and negative (–) meter lead to the the negative battery post.

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

 

 

 

 

4. Record voltage.

 

Glow Plug System Test (GM 3000–D)

This fast, simple test can help you determine a glow plug system’s integrity and operation. Run this test anytime hard starting (cold) is encountered on the diesel engine.

Tool(s) required: Digital multimeter and/or AC/DC current transducer (Hall Effect).

1.Properly connect current transducer to the digital multimeter. Set multimeter on the proper volts scale (re­ fer to manufacturer’s instructions).

2.Make sure engine is off. Place current transducer around the orange wire connected to glow plugs (Fig. 3).

3.Read meter prior to activating glow plug system. Ad­ just the transducer to read zero (if applicable).

4.Turn ignition switch to RUN and record current. Re­ peat test.

GLOW PLUGS

GLOW PLUGS

ORANGE WIRE

Figure 3

Note: The glow control unit will cause the glow plugs to time off after a determined amount of time. This condi­ tion should not be misinterpreted as a malfunctioning system.

5. The meter should read from 31 to 61 Amps.

Electrical System

Page 6 – 8

Groundsmaster 3000/3000–D

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Toro 3000D manual Electrical System Quick Checks, Battery Test Open Circuit Test, Glow Plug System Test GM 3000-D