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42hW-201601
CHAPTER 2 ENGINE3015R(h)/3515R(h)/4015R(h)/F36R(h)/F42R(h) TRACTOR
2
Conne c t p osi tive (+) of volt mete r l ead to
alternator output Terminal (B+) and negative (-)
lead to a ground on alternator.
With engine running about 1500 RPM and all
accessories turned on, output voltage must be
13.4 ~ 15.7(V).
If output is not measure, or if voltage is not
constant, check alternator output circuit for
loose.
If output is still not measure, check brushes and
slip rings for wear, dirt or damage.
If brushes and slip rings are good, alternator is
damaged internally. Disassemble alternator and
test components.
1.
2.
3.
4.
5.
K20W2A79
ALTERNATOR OUTPUT VOLTAGE TEST ON
ENGINE RUNNING CONDITION.
▶
K20W2A80
IGNITION CIRCUIT TEST AT IGNITION KEY
ON CONDITION
▶
Unplug Ignition terminal of regulator connector
from voltage regulator
Connect positive (+) voltmeter lead to Ignition
wire on the wiring harness and negative (-)
voltmeter lead to a ground terminal.
Voltmeter should indicate battery voltage. If
battery voltage is not measured, check Ignition
circuit for loose or dirty connection or damaged
wiring.
1.
2.
3.
CHECK
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