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  1. #1
    Senior Member dlc95's Avatar
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    3401 Slowing Down At Set Speed

    Yesterday I took delivery of a "new to me" Flex 3401.

    I got a chance to play with it today, and as I operated it, the tool would lose a bit of power at whatever speed it was set.

    If I disengaged the trigger lock, and re-engaged it, it would again start at the same speed, and then slow down again.

    Just asking to see what the Autogeek council thinks could be the issue, or if any of you have experienced anything similar.

    On another note, as fans of the 3401 can attest - I'm really happy to have the 3401 returned to the line up. I did too many large and production jobs last summer to be without it..

  2. #2
    Senior Member Kamakaz1961's Avatar
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    Re: 3401 Slowing Down At Set Speed

    I had the same issue and eventually it DIED! They are very easy to repair. I replaced my trigger switch. Apparently, that will wear out or break (in my case I have dropped my Flex about 4 times and did again about 2 weeks ago! Just call me HOMER...DOH)!

    As for the brushes I still have the original ones and looks like I have a long way to go. It appears they will last longer than the mechanical parts. I bought brushes thinking they wore out...WRONG!

    BUT BEFORE YOU DO ANYTHING, look at the cord as well as the extension cord. The cord could be lose in the DA. Make sure you are using a heavy gauge extension cord. I would look at that 1st! If that doesn't work MY GUESS the trigger switch is wearing out. As for parts...I can't remember where I got mine, I know AGO will have that information. The part is around $90 - $100. It's been a while since I fixed it. But I do recall they are very easy to repair.

    IF I CAN FIX it I KNOW you can!...LOL
    CJ
    2013 Mustang GT w/Track Pack 6-Speed Manual
    Save the Manual!

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  4. #3
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    Re: 3401 Slowing Down At Set Speed

    powerhousetoolparts dot com is where I get all my flex parts. I like to stock up because shipping is a flat $10.95.

    PN 320374 is the trigger switch. $29.80 and there is 40 left in stock.

    I'd also consider the speed control unit- PN 292990. Unfortunately that little bugger is $87.85.

    Good luck and best wishes getting that 3401 back up to snuff! I can't imagine not having mine after relying on it for so many jobs!
    Brandon Visser | 269-569-1900 | b5visser@live.com
    Owner/Appearance Specialist | @domainappearance

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  6. #4
    Senior Member dlc95's Avatar
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    Re: 3401 Slowing Down At Set Speed

    Yep, It's the cord...

    If it hits a certain position, it slows down. I'll have to take it apart and see if It's just loose, or of I need a new one.

    Thanks, guys!

  7. #5
    Senior Member Kamakaz1961's Avatar
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    Re: 3401 Slowing Down At Set Speed

    Quote Originally Posted by B5visser View Post
    powerhousetoolparts dot com is where I get all my flex parts. I like to stock up because shipping is a flat $10.95.

    PN 320374 is the trigger switch. $29.80 and there is 40 left in stock.

    I'd also consider the speed control unit- PN 292990. Unfortunately that little bugger is $87.85.

    Good luck and best wishes getting that 3401 back up to snuff! I can't imagine not having mine after relying on it for so many jobs!
    WOW! thank you for this! I did not know the part numbers and I forgot where I got my parts. Mine died about 3 years ago! Again thanks for this helpful information!
    CJ
    2013 Mustang GT w/Track Pack 6-Speed Manual
    Save the Manual!

  8. #6
    Senior Member Kamakaz1961's Avatar
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    Re: 3401 Slowing Down At Set Speed

    Quote Originally Posted by dlc95 View Post
    Yep, It's the cord...

    If it hits a certain position, it slows down. I'll have to take it apart and see if It's just loose, or of I need a new one.

    Thanks, guys!
    So cool to see it was only the cord (more than likely). Just tighten that baby up or replace it with another cord and looks like you are good to go! Please let us know if that was the fix when you fix the cord.
    CJ
    2013 Mustang GT w/Track Pack 6-Speed Manual
    Save the Manual!

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  10. #7
    Senior Member dlc95's Avatar
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    Re: 3401 Slowing Down At Set Speed

    Quote Originally Posted by Kamakaz1961 View Post
    So cool to see it was only the cord (more than likely). Just tighten that baby up or replace it with another cord and looks like you are good to go! Please let us know if that was the fix when you fix the cord.
    Will do!

    I left all my star bits at my better hall's place. I'll have to take it over there to get into it... I'll also have to explain the new purchase, but luckily it was only $180.00 shipped, with an extra LC 4" conversion plate for the Force pads! Shipping was $44.00.. I would say thatit was a good deal for a tool that will pay itself off in one job!

  11. #8
    Senior Member dlc95's Avatar
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    Re: 3401 Slowing Down At Set Speed

    Quote Originally Posted by B5visser View Post
    powerhousetoolparts dot com is where I get all my flex parts. I like to stock up because shipping is a flat $10.95.

    PN 320374 is the trigger switch. $29.80 and there is 40 left in stock.

    I'd also consider the speed control unit- PN 292990. Unfortunately that little bugger is $87.85.

    Good luck and best wishes getting that 3401 back up to snuff! I can't imagine not having mine after relying on it for so many jobs!
    I agree with Kamakaz1961, thank you for providing those numbers!

  12. #9
    Senior Member Aaryn NZ's Avatar
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    Re: 3401 Slowing Down At Set Speed

    Quote Originally Posted by dlc95 View Post
    Will do!

    I left all my star bits at my better hall's place. I'll have to take it over there to get into it... I'll also have to explain the new purchase, but luckily it was only $180.00 shipped, with an extra LC 4" conversion plate for the Force pads! Shipping was $44.00.. I would say thatit was a good deal for a tool that will pay itself off in one job!


    Geeze - Bargain much! Man thats a sharp deal, I reckon I'd struggle not to buy two at that price! Even converted to NZ dollars that still is unrealistically awesome. Feel for me here - for me to buy a Flex 3401 (I have three) & get it here to NZ (because nobody sells them domestically) on average I'm looking at fourteen hundred dollars a pop! That roughly works out to $1020,00 USD . . . .

    Aaryn NZ.
    a DETAILS Blenheim New Zealand - IDA Member - C.Quartz Finest Authorized Installer

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  14. #10
    Senior Member dlc95's Avatar
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    Re: 3401 Slowing Down At Set Speed

    Quote Originally Posted by Aaryn NZ View Post


    Geeze - Bargain much! Man thats a sharp deal, I reckon I'd struggle not to buy two at that price! Even converted to NZ dollars that still is unrealistically awesome. Feel for me here - for me to buy a Flex 3401 (I have three) & get it here to NZ (because nobody sells them domestically) on average I'm looking at fourteen hundred dollars a pop! That roughly works out to $1020,00 USD . . . .

    Aaryn NZ.
    Ouch!

    You must really like these tools!

    My first one was brand new, open box for $220.00 off the bay in 2012.

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