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I have a hunter J111 alignment machine. When I go to set castor and you get to the screen that shows all four wheels are lit up green and even numbers then when you are supposed to turn left as soon as you do then the left front sensor starts blinking the red fault arrow and will not change, If you turn the wheels back to the front you get the all green lights and numbers back. If you stick your hand in the IR beam it takes the numbers from 150 down to 30 then remove your hand the numbers and green comes back?

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  • iupholster Mar 03, 2009

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    posted by iupholster on Mar 03, 2009

    I have a hunter J111 alignment machine. When I go to set castor and you get to the screen that shows all four wheels are lit up green and even numbers then when you are supposed to turn left as soon as you do then the left front sensor starts blinking the red fault arrow and will not change, If you turn the wheels back to the front you get the all green lights and numbers back. If you stick your hand in the IR beam it takes the numbers from 150 down to 30 then remove your hand the numbers and green comes back?


    Tied reinstall system disk did not work, don't think it is the sensor or it wouldn't work on the camber setting either?

  • iupholster Mar 05, 2009



    Have tried all suggestions, none of them work. I know the wensor is not the problem have changed the sensor to the ohter side it works fine.

    Sorry but not satisfied with my purchased help.

  • Brian Seisbye
    Brian Seisbye Jul 29, 2014

    Anyone that can send my a "backup" of factory disk? (image) or somefing?

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I have extensive knowlege on this machine. If you are still having the problem, there are very few things that could be causing it, assuming that it is a conventional problem.

This is NOT a software program. For all of you out there, the Hunter J111 in not windows based. There is no software to reload, besides the factory disk that either works, or it doesn't.

This is most definately a Sensor Head problem. As a rule of thumb, it it affects all the heads, it involves the computer, and if it affects only one head, then it is a head problem.

You are simply missing the "Left Turn Sensor" on the toe board. This can be caused by several different problems, including parts and as simple as connections.

First suspect would be the "Toe Board", but you indicated that you have moved it.

Next would be the IR (infared) emitter on the left REAR head. If the emitter has become weak, or blocked, you will have trouble during caster steer. You mentioned that it does not have any trouble during camber; That would be normal. The caster steer function uses a different portions of the toe board sensor to read "Center, left turn, and right turn", so during the "Center", or steer straight ahead position, you would normally experience no problems, even if the left turn function is.

If we can prove that the emitter is doing a fine job, (and we can; a complicated procedure) then we are looking at refreshing, or excercising the electrical connections. I make a great deal of money every year by disconnecting, and reconnecting wires, and solving many problems just like yours. ***IMPORTANT** MAKE NO CONNECTION CHANGES WITH POWER APPLIED TO THE SENSOR HEAD. UNPLUG THE HEADS, AND IF UNSURE, UNPLUG THE COMPUTER!!!

Next, check all the connections at the main board, (Transducer Control Board), and the seating of the EEPROM chips. The chips will walk themselves out of their sockets with temperature changes, through expansion and contraction. Push them back into place, and you may hear a slight "crackling" sound. ***IMPORTANT** MAKE NO CONNECTION CHANGES OR RESEAT CHIPS WITH POWER APPLIED TO THE SENSOR HEAD. UNPLUG THE HEADS, AND IF UNSURE, UNPLUG THE COMPUTER!!!

I am almost certain that you are in need of NO parts. These problems are most commonly caused by connections, either at the cables or the chips. Next highest suspect cause would be the left rear emitter.

GOTO www.Equipmentcity.net to find me. Call anytime for on demand Hunter alignment machine advise, and discount parts.

Posted on Oct 02, 2009

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Pressure is not getting same on the both side when the wheels turning back .that pressure has to be checked.

Posted on Mar 03, 2009

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The sensor may not b level or it needs calibrated

Posted on Mar 03, 2009

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How far left do you turn the wheel... sounds to me like all it is doing is indicating how far out of range it is for what you are trying to align

Posted on Mar 03, 2009

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The sensor needs to be checked it is not sensing poroperly.

Posted on Mar 03, 2009

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Try resetting the machine to factory, or reinstalling system.

Posted on Mar 03, 2009

  • Ginko
    Ginko Mar 03, 2009

    That is because of a setting problem , or because the IR sensor is malfunctioning.

    Check that the IR sensor surface is clean, and try resetting the machine.
    Alsto try tripping the alignment machine circuit breaker for ten minutes, this should also reset to factory.

    I need to find more information on the specific model.


  • Ginko
    Ginko Mar 03, 2009

    Finding specific information, like schematics and repair manual on this kind of machine is not easy.

    From description the problem concern the IR sensor calibration, but without a service manual is difficult to fuix the problem.

    The best thing to do is contacting manufacturer using the form here.


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SOURCE: posted by iupholster on Mar

remove and clean and refit the sensor and try if still the same problem.then a manufactures needs to be called for service and replacement.

Posted on Mar 03, 2009

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Posted by iupholster on Mar 03, 2009 I have a hunter J111 alignment machine. When I go to set castor and you get to the screen that shows all four wheels are lit up green and even numbers then when you...


try moving the alignment computer backwards with the wheel turned. sounds like the lazer beam is too close and when the wheel is turned it goes out of range,
considering all other aspects of machine work like camber and toe specs.

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