stripped transmission drain plug
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Cruiser
Joined: Jan 2006
Posts: 153
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From: Oconomowoc, Wi
stripped transmission drain plug
Need some advice, my neighbor has a 04 Fatboy and the transmission drain plug will not torque to spec.
If you would torque plug to spec it would strip out completly.
At present the plug is in (used alot of loctite) and not leaking.
What would be the best way to repair this?, as I do not beleive this will last for long and for sure will not make another trans fluid change.
Thanks for your help
Dan
If you would torque plug to spec it would strip out completly.
At present the plug is in (used alot of loctite) and not leaking.
What would be the best way to repair this?, as I do not beleive this will last for long and for sure will not make another trans fluid change.
Thanks for your help
Dan
Road Captain
Joined: Apr 2006
Posts: 535
Likes: 0
From: Mont. Co. Maryland
RE: stripped transmission drain plug
I'm not an expert but, I'd take it out and start over again with a new plug, and o-ring. You said it's in and not leaking, but for how long. Shouldnt take a chance it will leak on a trip.If it don't torque right, it ain't right!!!!I just changed my fluids and I bought 2 extra sets of plugs for each hole just in case. The parts guy thought I was an idiot for buying 2 spares, but for less than $3 each, I put in the new one, and clean up the old one w/ new o-ring. It's my peace of mind.
The plug is Al, so you won't hurt the metal female side if you get it out. (supposedly)
Also, I'd used a square headedwrench instead of a round-headed allen wrench. (It just didnt fit right)
The plug is Al, so you won't hurt the metal female side if you get it out. (supposedly)
Also, I'd used a square headedwrench instead of a round-headed allen wrench. (It just didnt fit right)
Road Master
Joined: Mar 2005
Posts: 878
Likes: 0
From: Cistern,Tx
RE: stripped transmission drain plug
If the threads are gone in the transmission you might try a helicoil. Or find a tap and run it thru there and try and clean the threads up and see what happens. If all else fails tap it to the next size up. And I ain't no expert either. Maybe some of them HD mechanics will see this and respond or go to a shop and get there advice.
Banned
Joined: Mar 2007
Posts: 3,706
Likes: 7
From: Woodstock, Ont , Can
RE: stripped transmission drain plug
Helicoil is best repair. I'd recommend making a fitting for the dipstick and run low volume compressed air in the tranny while tapping for the helicoil. Keeps chips from jumping inside the gearbox.
Ron
Ron
Tourer
Joined: Jun 2007
Posts: 331
Likes: 27
From: New Brunswick
RE: stripped transmission drain plug
There are oversize drain plugs make by Oil-tite available at auto parts store. Your drain plug should be 1/2" 20 thread per inch, they have double oversize and single oversize which are self-tapping. Also they have Piggyback self-tapping plugs with a small drain plug in the center of the drain plug. I would used the piggyback type so you still can drain the fluid without removing the main plug.
The problem withusing heli coilsis that there isn't alot of material aroung the drain hole to drillout for installing heli coils. You wil likely need to drop the shocks to install a new plug to keep everything straight.
The problem withusing heli coilsis that there isn't alot of material aroung the drain hole to drillout for installing heli coils. You wil likely need to drop the shocks to install a new plug to keep everything straight.
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Road Warrior
Joined: Dec 2006
Posts: 1,522
Likes: 1
From: Douglasville, GA
RE: stripped transmission drain plug
ORIGINAL: rbabos
Helicoil is best repair. I'd recommend making a fitting for the dipstick and run low volume compressed air in the tranny while tapping for the helicoil. Keeps chips from jumping inside the gearbox.
Ron
Helicoil is best repair. I'd recommend making a fitting for the dipstick and run low volume compressed air in the tranny while tapping for the helicoil. Keeps chips from jumping inside the gearbox.
Ron
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Thread Starter
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Cruiser
Joined: Jan 2006
Posts: 153
Likes: 0
From: Oconomowoc, Wi
RE: stripped transmission drain plug
03 Fatboy
I like your idea with the oversize piggyback drain plug.
I'll look for one. You are also correct on dropping the one shock to get at the plug properly.
Thanks for the advice.
03 Softail
I like your idea with the oversize piggyback drain plug.
I'll look for one. You are also correct on dropping the one shock to get at the plug properly.
Thanks for the advice.
03 Softail
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