Kohler Command CV730 User Manual download pdf (Page 138)

8.22

Section 8

Electrical System and Components

Problem Test Conclusion

1. Trace B+ lead from rectifier-

regulator to key switch, or other

accessible connection. Disconnect it

from switch or connection. Connect

an ammeter from loose end of B+

lead to positive terminal of battery.

Connect DC voltmeter from loose

end of B+ lead to negative terminal

of battery. With engine running at

3600 RPM, read voltage on

voltmeter.

If voltage is 13.8 volts or more,

place a minimum load of 5 amps*

on battery to reduce voltage.

Observe ammeter.

*NOTE: Turn on lights, if 60 watts

or more. Or place a 2.5

1. If voltage is 13.8-14.7 and charge rate increases when

load is applied, the charging system is OK and battery

was fully charged.

If voltage is less than 13.8 or charge rate does not

increase when load is applied, test stator (Tests 2 and 3).

If the voltage is low and does not increase, and there is

no charging/amperage output, disconnect and reconnect

the rectifier-regulator plug and retest.

a. If the ammeter shows charge for a short time but

then drops back to zero, the rectifier-regulator is

functioning correctly but the battery is faulty. Replace

the battery.

b. If no amperage/charge rate appears during the

retest, go to step 2.

Troubleshooting Guide

15/20/25 Amp Battery Charging Systems

When problems occur in keeping the battery charged or the battery charges at too high a rate, the problem can

usually be found somewhere in the charging system or with the battery.

NOTE: Always zero ohmmeter on each scale before testing to ensure accurate readings. Voltage tests should

be made with the engine running at 3600 RPM - no load. The battery must be good and fully charged.

2. Remove connector from rectifier-

regulator. With engine running at

3600 RPM, measure AC voltage

across stator leads using an AC

voltmeter.

2. If voltage is 28 volts or more, stator is OK. Rectifier-

regulator is faulty. Replace the rectifier-regulator.

If voltage is less than 28 volts, stator is probably faulty

and should be replaced. Test stator further using an

ohmmeter (Test 3).

No Charge

to Battery

3a. With engine stopped, measure the

resistance across stator leads using

an ohmmeter.

3a. If resistance is 0.064/0.2 ohms, the stator is OK.

If the resistance is infinity ohms, stator is open. Replace

stator.

3b. With the engine stopped, measure

the resistance from each stator lead

to ground using an ohmmeter.

3b. If the resistance is infinity ohms (no continuity), the

stator is OK (not shorted to ground).

If resistance (or continuity) is measured, the stator leads

are shorted to ground. Replace stator.

1. If the voltage is 14.7 volts or less the charging system is

OK. The battery is unable to hold a charge. Service

battery or replace as necessary.

If voltage is more than 14.7 volts, the rectifier-regulator is

faulty. Replace rectifier-regulator.

1. Perform same test as step 1 above.

Battery

Continuously

Charges at

High Rate

1 2 ... 133 134 135 136 137 138 139 140 141 142 143 ... 216 217

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Kohler Command CV730 User Manual Page 138

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