Manuals / Guardian Technologies / Lawn and Garden / Portable Generator

Guardian Technologies 4583, 4582 & 4987, 4451 & 4986 Test 54 Check Idle Control Transformers ICT

Models: 5308 4583 4451 & 4986 4582 & 4987

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Page 66

Section 6

DIAGNOSTIC TESTS

00.00

SW2

83

0

J2-1		J2-12

MAKE SURE THE TEST PROBE CONNECTOR IS

MAKING CONTACT WITH THE CONNECTOR.

DOUBLE CHECK TO

J2 HARNESS CONNECTOR MAKE SURE THAT THE TIP IS SHARP.

Figure 6-60. – Check Idle Control Wiring

RESULTS:

Repair or replace wiring as needed. Refer back to the flow chart.

Test 54 - Check Idle Control

Transformers (ICT)

PROCEDURE:

7.Apply a light load to the generator, such as a electric drill.

8.When the drill is activated measure the voltage output. The AC voltage should measure around 1-2 VAC.

RESULTS:

Refer back to flow chart.

		BLK	BLK
86	15B	167
0	229	83	100 ohm
TERMINAL		TR2
BLOCK		TR1
(TB1)

Figure 6-61. Check Idle Transformer Wiring

TEST 55 - CHECK TR1 & TR2 Wiring

86 15B 167 BLK

0

229

83

BLK

00.00

TB1	TR2
	TR1

1.	Set a voltmeter to measure resistance.
2.	Remove the two Idle Control Transformer (ICT) Wires from
	Terminal Block 1 (TB1). See Figure 6-61.
3.	Connect one meter test lead to one wire and connect the other
	meter test lead to the other wire. Approximately 100 ohms
	should be measured. If resistance is not measured repair or
	replace the Idle Control Transformers. If resistance was mea-
	sured proceed with Step 4.
4.	Set a voltmeter to measure AC Voltage.
5.	Connect one meter test lead to one wire and connect the other
	meter test lead to the other wire.

J2-1J2-12

J2 HARNESS CONNECTOR

MAKE SURE THE TEST PROBE CONNECTOR IS MAKING CONTACT WITH THE CONNECTOR. DOUBLE CHECK TO MAKE SURE THAT THE TIP IS SHARP.

6. Turn the Idle Control Switch (SW2) to OFF. The generator

should be running at about 60 HZ.

Figure 6-62. – Check TR2 Wiring

Page 64

Image 66

Guardian Technologies 4583, 4582 & 4987, 5308 Test 54 Check Idle Control Transformers ICT, Test 55 Check TR1 & TR2 Wiring

Contents

Diagnostic Repair Manual Safety Replacement PartsTable of Contents Section Disassembly and Exploded Views 66-71 Magnetism Electromagnetic FieldsElectromagnetic Induction STATORs AC power windings Simple AC GeneratorMore Sophisticated AC Generator Generator Operating Diagram VOM MetersMeasuring AC Voltage Measuring DC VoltageMeasuring Current Measuring ResistanceElectrical Units Ohms LawRotor Assembly Introduction AC GeneratorEngine-Generator Drive System Other AC Generator Components Stator AssemblyBrush Holder and Brushes Excitation Circuit BreakerUnderfrequency Adjust 162Voltage Regulator Rotor Residual Magnetism Field Boost CircuitOperation Insulation Resistance MegohmmeterStator Insulation Resistance Test Testing ALL Stator Windings to Ground Test Between WindingsCleaning the Generator Rotor Insulation Resistance TestDrying the Generator Printed Circuit Board BatteryRecommended Battery Circuit Board ConnectionsControl Panel Component Identification ENGINE DC CONTROLC1 Female Side C1 Male Side C2 Female Side C2 Male SideTerminal Block Terminal BLOCKTB2 TB1 Page Circuit Condition Rest = 12 VDC Control Circuit Condition Start IM1 SP1 IM2 SP2 RED Black Battery Circuit Condition RUN = Idle Control Transformer Output CIRcUIT Condition Stop Fault Shutdown If Problem Involves AC Output Problem 1 Voltage & Frequency Are Both High or LowIntroduction Or Replace If BAD Load Watts Problem 4 No Battery Charge Output Problem 5 No 10A Battery Charge OutputProblem 6 Engine Will Not Crank Problem 7 Engine Cranks But Will Not Start Problem 8 Engine Starts Hard and Runs Rough Problem 9 Engine Starts Then Shuts DownProblem 10 10 Amp Fuse F1 Blowing Problem 11 Unit Overspeeds Problem 12 Idle Control RPM Does Not DecreaseProblem 14 Engine Hunts / Erratic Idle Test 2 Check Main Circuit Breaker ProcedureTest 1 Check No-Load Voltage Frequency ResultsTest 4 Fixed Excitation Test Rotor AMP Draw If circuit breaker is good, go on to TestSet voltmeter to measure AC voltage AC Voltage across Wires 11S and 44S= Refer to Test 4 Results chartRemove air cleaner cover to access stepper motor Set a voltmeter to measure resistanceTest 6 Wire Continuity Test 7 Check Field BoostSet volt meter to the diode test range Disconnect both wires from the Resistor R1Test 8 DIODE/RESISTOR Set volt meter to measure resistanceFrom the 50 Amp receptacle disconnect Wire Test 9 Test StatorUnplug the six pin connector at the Voltage Regulator Test 10 Sensing LeadsTest 12 Check Brush Leads Test 11 Excitation WiringGain access to the brushes and slip rings Test 13 Check Brushes & Slip RingsTest 16 Check Load Watts & Amperage Test 14 Check Rotor AssemblyTest 15 Check Load Voltage Frequency If the unit is overloaded, reduce the loadTest 17 Check Battery Charge Output Test 19 Check Battery Charge Rectifier BCR2Disconnect all wires from the Battery Charge Rectifier Test 22- Check Battery & Cables Test 21- Check 10 Amp FuseBCR1BCR2 Test 24 Check Starter Contactor SC Refer back to flow chartTest 23 Check Voltage at Starter Contactor SC Test 25 Check Starter MotorChecking the Pinion Tools for Starter Performance TestTest 26 Test Starter Contactor Relay SCR Set voltmeter to measure DC voltageReconnect all wires to the switch Test 27 Check Start-Run-Stop Switch SW1Test 28 Check Start-Run-Stop Switch SW1 Wiring Procedure Set voltmeter to measure resistanceRefer back to the Flow Chart Test 29 Check Ignition SparkTest 30 Check Spark Plugs SSR and the Battery Charge Rectifier 2 BCR2 Test 31 Remove Wire 18 / Shutdown LeadRefer to Flow Chart Test 32 Test Start Stop Relay SSRTest 33 Test Wire RUNTest 34 Test Start Stop Relay Wiring Test 35 Check and Adjust IgnitionMagnetos Test 38 Check Fuel Pump Test 36 Test Fuel Shutoff Solenoid FSSTest 37 Test Fuel Shutoff Solenoid Voltage MagnetoTest 40 Valve Adjustment Adjusting Valve ClearanceTest 39 Check Carburetion Adjust the regulated pressure on the gauge to 80 psi 52 Tightening the Jam NutTest 42 Check Oil Pressure Switch Wire Test 43 Check Start Stop Relay SSRTest 44 Test Starter Contactor Relay SCR Test 45 Check Wire 15 CircuitTest 46 Check Wire 14 Circuit Test 47 Check Fuel Shutoff SolenoidTest 51 Check Wires 11S & 44S Test 50 Check WireTest 49 Check Wire 15B Test 48 Check HourmeterSW2 Test 52 Check Idle Control SwitchTest 53 Check Idle Control Wiring TB2Test 55 Check TR1 & TR2 Wiring Test 54 Check Idle Control Transformers ICTTest 56 Choke Test Continuity should be measuredMajor Disassembly Remove air deflector Figure B, Item #45 from cross memberSupport Alternator 3317 3026 20 22 25 QTY Description Detail of Battery Tray QTY. Description ELECTRICAL DATA RED Battery Charge Winding BA Brush Assembly Governor Actuator 167 229 15B Power Winding DPE Winding SCR Wiring Diagram 17.5 kW Drawing No G0731 Stator Closest to Bearing Electrical Schematic 17.5 kW Drawing No G0733 Circuit 11 ORG Circuit 13 DRK BLU Circuit 15 PNK ELECTRICAL DATA Page Rated Max DC Load Amperes Current @ 12 Volts Load %Frequency Hz 238-242 59-61 100 Torque Specifications Trim Torque SpecificationsPO BOX 297 WHITEWATER, WI