Polaris RANGER XP 1000 2018-2019, Service Manual

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9929399 R01 - 2018-2019 RANGER XP/ CREW 900/1000 Service Manual
© Copyright Polaris Industries Inc.
11.33
CHARGING SYSTEM STATOR (ALTERNATOR) TESTS
Three tests can be performed using a multi-meter to
determine the condition of the stator (alternator).
TEST 1: Resistance Value of Each Stator Leg
1. Measure the resistance value of each of the three
stator legs: Y1 to Y2, Y1 to Y3, and Y2 to Y3. Each
test should measure:
0.1 Ω +/- 20%
TEST
CONNECT
METER
LEADS TO:
OHMS
READING
Battery Charge
Coil
Y1 to Y2 0.1 Ω +/- 20%
Battery Charge
Coil
Y1 to Y3 0.1 Ω +/- 20%
Battery Charge
Coil
Y2 to Y3 0.1 Ω +/- 20%
NOTICE
If there are any significant variations in ohm readings
between the three legs it is an indication that one of the
stator legs may be weak or failed.
TEST 2: Resistance Value of Each Stator Leg to
Ground
2. Measure the resistance value of each of the stator
legs to ground: Y1 to Ground, Y2 to Ground, Y3 to
Ground.
3. Each test should measure: Open Line (OL / ∞)
TEST
CONNECT
METER
LEADS TO:
OHMS
READING
Battery Charge
Coil
Y1, Y2, or Y3
to Ground
Open Line
(OL / ∞)
NOTICE
Any measurement other than Infinity (open) will indicate
a failed or shorted stator leg.
TEST 3: Measure AC Voltage Output of Each
Stator Leg at Charging RPM
4. Set the selector dial to measure AC Voltage.
5. Start the engine and let it idle.
6. While holding the engine at a specified RPM,
separately measure the voltage across each ‘leg’ of
the stator by connecting the meter leads to the wires
leading from the alternator (Y1 to Y2, Y1 to Y3, Y2 to
Y3).
7. Refer to the following table for approximate AC
Voltage readings according to RPM. Test each leg at
the specified RPM in the table.
8. Example: The alternator current output reading
should be approximately
21 VAC ± 25% at 1300
RPM between each ‘leg’.
NOTICE
If one or more of the stator leg output AC voltage varies
significantly from the specified value, the stator may
need to be replaced.
RPM READING
AC VOLTAGE (VAC)
READING
1300 21 VAC ± 25%
3000 47 VAC ± 25%
5000 79 VAC ± 25%
STATOR REPLACEMENT
Refer to “Stator Cover Removal / Inspection”page
3.45 procedure to service the stator.
NOTICE
The stator cover can be removed with the engine
installed in the chassis.
Be sure to thoroughly clean the area around the stator
cover prior to removal.
ELECTRICAL