Flywheel Alternator Components; Static Tests; Regulator Tests - Wisconsin vg4d Repair Manual

Problem: Low/No Charge Possible Cause & Remedy
Test 4.0 With engine stopped,
unplug all connectors
between modules and
stator. Start engine
and run at 2400 RPM.
With AC voltmeter
check voltage
between each of the
black stator leads and
ground.
If one of the two
voltages is zero or
they are over 10%
apart--
4.1 4.1 The stator is defective
and should be replaced.
Static check stator per
Tests 7.0, 7.1, 7.2.
The DF 83 Analyzer was developed for testing the solid
state ignition and flywheel alternator components as fur-
nished on Wisconsin engines. It is very efficiently and
economically powered by four transistor radio type 9 volt
batteries. The DF 81 Flashlite Tester is used primarily for
checking continuity.
REGULATOR Ti::STS
Test 5.0 REGULATOR GROUND
The YJ60 Regulator module must 1~ mounted to a metal
surface for grounding purposes. Check for continuity with
a VOM (R x 1 scale) or test light.
FLYWHEEL ALTERNATOR COMPONENTS
STATIC TESTS
The following test equipment is required:
DF 83 Analyzer - Wisconsin Part, Fig. 46.
DF 81 Flashlite Tester - Wisconsin Part, Fig.. 46.
VOLT-OHM-MILLIAMMETER Simpson 260 or equal.
WHITE
OF F - ON
SWITCH
~INDICATOR
LI GHT
~COVER
DF83 ANALYZER
DF81 FLASHLITE
TESTER
TESTER
RED LEAD
To Regulator
Body
TESTER
BLACK LEAD
To Ground
RESULT
DF 83 - Light On
DF 81 - Light On
VOM - Continuity
Test 5.1 REGULATOR STATIC CHECK
This test is an alternative or in addition to running tests 2.3
and 2.4 (omitting regulator). The DF 83 Analyzer is used.
YJ 60 REGULAT,OR
NOTE: Module is defective if light indication is not as
shown.
TEST
NO.
ANALYZER ANALYZER ANALYZER
RED
BLACK WHITE
LEAD TO:
LEAD TO: LEAD TO:
Module Module --
Base Plate Red Lead
Module Module --
Red Lead
Base Plate
Module Module Module
Red Lead Base Plate Black Lead
Then Remove
LIGHT
INDICA-
TION
OFF
OFF
On And
Remain
On
BLACK LEAD
~_EAD
Fig. 46
33