Model #77A EUREKA Vacuum, Hand-held

  • Hand Vac
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Question and Answers

Q:

no voltage output on generac generator 7500 watt model 580.327181, purchased in 2000.

A:

The problem with the generator can be very frustrating. I did some research but was not able to find an answer to help with the generator. Your expert will be able to help give you a detailed answer. It may take 24-48 hours. I do hope that everything works out with the generator.

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Marc -
August 27, 2012
A:

I do believe, based on your findings, that the stator is indeed bad. Typically I would say to flash the field and make sure, but normally when the magnetism is lost there will be no voltage readings. It won't hurt to try flashing the field just to make sure.

To flash the field: Plug a regular corded drill into the 120V outlet. Set the drill to run in reverse and start the generator. Hold down the drill trigger and spin the chuck forward. Doing this will generate a minimal magnetic voltage that should get things back to normal if the rotor has lost its magnetism.

If that does nothing then I would say that the stator has indeed failed.

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Wade_B -
Sears Technician
August 28, 2012
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Q:

I have a Kenmore dryer and it will not heat. How do I replace the fuse?

A:

The fuses that the owner’s manual is referring to are actually the house circuit breakers. An electric dryer will run but not heat if one of the double 30amp breakers trip. You will need to check the voltage at the plug to determine if you have 220volts supplied to the dryer. If you find 220volts then we can suspect a problem with the dryer. This dryer has an internal thermal limiter that if fails the dryer will not run at all. Other testing can be done by putting the control into a diagnostic test mode. Please see the image provided for the test mode & other helpful information.

CONDITION: Dryer runs, but no heat. 1. Drive motor runs but dryer will not heat. Heating element, gas burner, motor heat switch, high limit (safety) thermostat, control board and wiring all check satisfactory. 2. Long dry times. Vent system is clean and airflow is good. 3. Dryer shuts off before clothes load is dry. Vent system is clean and airflow is good. CORRECTION: The control thermistor located on the blower housing is the most suspect component. Corrosion of this thermistor creates false resistance readings causing the dryer not to heat properly. Control Thermistor Replacement: 1. Unplug dryer from electrical outlet and remove harness connections from thermistor. 2. Measure the resistance of the control thermistor (the thermistor can remain on the blower housing for measurement). NOTE: If the reading is less than 45K ohms or greater than 55K ohms @ 77°F, it is faulty. Replace with a new encapsulated thermistor PN 134587700. Note: an electronic control should only be replaced after proving the thermistor meets specification between 45K and 55K ohms.

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biker dave -
Sears Technician
September 29, 2009
Q:

My Craftsman battery operated backup sump pump model 390.306062 charger unit alarm sounds. The battery is new. What causes this?

A:

I am sorry to tell you that the battery charger has gone bad. The charger is part number PS117-77A and the cost is around $130.00. You should check the price of a new sump pump.

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Jimmy K -
Sears Technician
June 13, 2008