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Author Topic: stripped tranny plug  (Read 2410 times)

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newseultra07

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stripped tranny plug
« on: June 16, 2008, 04:11:33 PM »

OK i messed up & stripped the tranny plug. How can i fix w/o changing the pan out. Can i retap to a bigger size? HELP PLEASE
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Mrs Rooster

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Re: stripped tranny plug
« Reply #1 on: June 16, 2008, 06:21:16 PM »

 Rooster says (don't ask him how he knows) that they have oversized self-tapping ones at the auto parts store.
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cuthbertss

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Re: stripped tranny plug
« Reply #2 on: June 16, 2008, 06:23:47 PM »

Rooster says (don't ask him how he knows) that they have oversized self-tapping ones at the auto parts store.

LMAO :o
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jfscheck

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Re: stripped tranny plug
« Reply #3 on: June 16, 2008, 08:48:24 PM »

On my 2003 Fatboy I did the same thing - ordered a new one from J&K and it came with the tap - tap with some grease to trap the shavings - one flush and installed the new plug.

Last I heard - the owner whom I sold it too has 14k on it and running with no drips!!!
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BIGDOG

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Re: stripped tranny plug
« Reply #4 on: June 16, 2008, 08:56:00 PM »

Rooster says (don't ask him how he knows) that they have oversized self-tapping ones at the auto parts store.
Does't every one have one of those in there bolt can? :nixweiss:
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cuthbertss

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Re: stripped tranny plug
« Reply #5 on: June 16, 2008, 08:57:20 PM »

Does't every one have one of those in there bolt can? :nixweiss:

I think we will before too long now..just in case

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hossdog

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Re: stripped tranny plug
« Reply #6 on: June 16, 2008, 11:50:39 PM »

OK i messed up & stripped the tranny plug. How can i fix w/o changing the pan out. Can i retap to a bigger size? HELP PLEASE
                                                                                                                                                                                                                                                                                                              You don't have to retap. Any auto parts store sells pipe plugs you can use. Just take you plug with you so you can match the threads up. When you install the pipe plug do not bottom it out. Just tight enough to snug it up. I stripped my old Classic oil plug out at 20k miles it now has 72k miles and the same pipe plug and it doesn't leak a drop.
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newseultra07

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Re: stripped tranny plug
« Reply #7 on: June 17, 2008, 06:33:55 AM »

Update. Went to sears and got a 1/2 by 20 tap and cleaned threads up & bought another plug from dealer and reinstalled. Didn't tighten as much as first time. So far so good filled up with oil and will start up and check for leaks today. Also bought a oversize plug that retaps hole just in case.
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ultrafxr

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Re: stripped tranny plug
« Reply #8 on: June 17, 2008, 03:14:08 PM »

Update. Went to sears and got a 1/2 by 20 tap and cleaned threads up & bought another plug from dealer and reinstalled. Didn't tighten as much as first time. So far so good filled up with oil and will start up and check for leaks today. Also bought a oversize plug that retaps hole just in case.
Sounds like you may have lucked out.  Sure hope so.  Happened to me a few years ago.  Unscrewed the tranny drain plug and with it came the threads from the (aluminum) oil pan.  Had it serviced while on a road trip & I think the idiot technician must have overtightened / crossthreaded it.  Learned the hard way that I must do fluid changes myself. 
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grc

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Re: stripped tranny plug
« Reply #9 on: June 17, 2008, 05:21:17 PM »

To each his own, but I personally prefer the heli-coil repair and standard plug versus the oversized plug or automotive self-tapper.  A few reasons:

1.  Steel heli-coil  or threaded insert repairs in aluminum are actually stronger than the original threads, reducing the possibility of a repeat "oops".
2.  Keeping the standard plug means the wrench remains the same for both drains.
3.  Too easy with the one piece self tappers to screw the threads up again on subsequent oil changes.

If the plug actually pulled threads, I don't think I would just re-tap and back off on the torque.  Eventually that will very likely fail, so go ahead and do a proper repair now.  If you go with the self tapping repair plug, try to find a two piece one (outer piece threads into oil pan and stays there permanently, and there is a center plug that screws into the outer part).  I know I've seen them somewhere, just can't remember where.  

Jerry
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BIGDOG

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Re: stripped tranny plug
« Reply #10 on: June 17, 2008, 05:31:23 PM »

To each his own, but I personally prefer the heli-coil repair and standard plug versus the oversized plug or automotive self-tapper.  A few reasons:

1.  Steel heli-coil  or threaded insert repairs in aluminum are actually stronger than the original threads, reducing the possibility of a repeat "oops".
2.  Keeping the standard plug means the wrench remains the same for both drains.
3.  Too easy with the one piece self tappers to screw the threads up again on subsequent oil changes.

If the plug actually pulled threads, I don't think I would just re-tap and back off on the torque.  Eventually that will very likely fail, so go ahead and do a proper repair now.  If you go with the self tapping repair plug, try to find a two piece one (outer piece threads into oil pan and stays there permanently, and there is a center plug that screws into the outer part).  I know I've seen them somewhere, just can't remember where.  

Jerry
For what it's worth I agree. Retaping the same thread size and count is bound to fail. all you did was put broken or cracked threads back in place. you need to go up a size or heli-coil in to new material. You also need to clean out the inside of the pan to remove any metal that went in with the tap.
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TNThumper

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Re: stripped tranny plug
« Reply #11 on: June 17, 2008, 07:01:29 PM »

Heli=coil is definitely the way to go..

VG
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Twolanerider

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Re: stripped tranny plug
« Reply #12 on: June 17, 2008, 08:41:40 PM »


 You also need to clean out the inside of the pan to remove any metal that went in with the tap.



Always important.  But in the case of the transmission plug a bit less of an issue than normally.  That "tunnel" that is vertical in the oil pan for the tranny fluid to drain out of is the full depth of the pan itself but not much wider (if at all) then the drain plug.  Down at the bottom where the threads are is a long way from the reservoir.  Leaving shavings in the threads is always a concern.  But here gravity itself and a little movement by the tap or just tapping against is probably going to do a pretty fair job of cleaning it out.  Fluid at the bottom of that "finger" through the pan isn't going to run uphill much either.
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Twolanerider

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Re: stripped tranny plug
« Reply #13 on: June 17, 2008, 08:43:10 PM »

Heli=coil is definitely the way to go..

VG


Probably need a right angle drill and to break the bit off to shorten it for use to do it though.  At least if working on a table lift.  If working on a jack the jack itself is going to be in the way.
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BIGDOG

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Re: stripped tranny plug
« Reply #14 on: June 18, 2008, 06:18:32 PM »


Always important.  But in the case of the transmission plug a bit less of an issue than normally.  That "tunnel" that is vertical in the oil pan for the tranny fluid to drain out of is the full depth of the pan itself but not much wider (if at all) then the drain plug.  Down at the bottom where the threads are is a long way from the reservoir.  Leaving shavings in the threads is always a concern.  But here gravity itself and a little movement by the tap or just tapping against is probably going to do a pretty fair job of cleaning it out.  Fluid at the bottom of that "finger" through the pan isn't going to run uphill much either.
If there is turbulence in the oil wouldn't that possibly cause shavings to migrate through out or is the oil stagnant there?
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