
Chapter 9 - Electrical
307
3.
Capacitance testing
There are several brands of capacitance battery tester
presently on the market. Capacitance battery testers
use the battery being tested as their power source.
These testers send a small AC signal through the bat-
tery to measure the capacity of the plate to hold a
charge.
Capacitance are very easy to use and are far less dam-
aging to the battery being tested. For these reasons,
capacitance battery testing is the preferred method of
battery testing.
NOTE:
Contact the manufacturer of the tester
being used for specific test procedures.
3a. Connect the tester to the battery.
3b. Set the tester to the CCA rating of the bat-
tery.
3c. Initiate the test.
3d. Read the display of the tester. The tester’s
display will indicate if the battery passed
or not. See Figure 9.66.
Figure 9.66
Test Results
4.
Battery discharge test
Occasionally a battery will discharge while sitting
unused. To test for a battery that is “leaking” voltage:
4a. Confirm that operator technique is not cre-
ating a situation that cases a draw.
As an example, if a homeowner habitually
turns their equipment off using a safety
switch (perhaps vacating the seat with the
key switch still ON), that may leave a
relay or fuel shut-off solenoid energized.
4b. Disconnect and charge the battery fully.
4c. Use the ammeter function of a DVOM to
check for a power draw between the neg-
ative post on the battery and the end of
the ground cable that normally connects
to it. There should be no significant D.C.
Amperage flow. See Figure 9.67.
NOTE:
A spark jumping from the post to the
cable end is an indication that there is a substan-
tial current draw, but should not be used repeat-
edly as a diagnostic tool. This is an extremely
unkind thing to do to any electronic components
of the tractor.
4d. Once the presence of a draw is confirmed,
disconnect components of the system one
at a time while monitoring an ammeter to
see which makes the draw stop.
Figure 9.67
Summary of Contents for Volunteer 4x4 Utility Vehicle
Page 2: ......
Page 4: ......
Page 12: ...Chapter 1 Introduction 8 ...
Page 66: ...Chapter 2 Drive System CVT and Transfer Case 62 ...
Page 78: ...Kohler Enclosed CVT Addendum 74 ...
Page 92: ...Caterpillar Enclosed CVT Addendum 88 ...
Page 126: ...Chapter 3 Drive System Drive Shafts and Differentials 122 ...
Page 278: ...Chapter 8 Caterpillar Engine and Related Systems 274 ...
Page 319: ...Chapter 9 Electrical 315 Electrical Schematic Engine Harness w Kohler engine ...
Page 321: ...Chapter 9 Electrical 317 Electrical Schematic Engine Harness w Caterpillar engine 725 04341 ...
Page 322: ...Chapter 9 Electrical 318 ...
Page 327: ...5 ...
Page 328: ...6 ...