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Nskookum
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Frozen Drain Plug
Have had my '84 911 about a year.... a Newbee. In trying to learn and do more of my own maintenance ...decided it was time to change out the gear oil. Bought what I needed ..i.e. hex socket etc and proceeded to attack the task. Worked the fill plug first, although a little tough it broke loose and I was able to remove and check the fluid level. Next went to the drain plug and unfortunately it was not as easy. And of course as it goes you take several good hard attempts and the socket begins to round out the inside hex form. Now there is not enough there to work with.
Any thoughts on how best to remove this plug? 
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08-18-2007, 07:04 AM
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Slumlord
Join Date: May 2001
Location: Canada
Posts: 4,983
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Have you wrecked the plug to the point where there is no longer any chance of removal?
And don't feel too badly about this, I think it's fairly common. Use the search button and you will find lots of suggestions how to prevent doing what you did. But I don't recall seeing a post about how to proceed once the hex is destroyed. A picture might help us figure out a cost effective solution. |
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08-18-2007, 07:15 AM
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Evolved
Join Date: Jan 2007
Posts: 3,338
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Use a Penetrating oil and heat (NOT TOO MUCH HEAT). If the plug interior is so rounded out that the tool slips I have used a small chisel, to drive such a plug/bolt/nut, etc. off/out. You must be CAREFUL not to damage the threads!
If uncomfortable trying this yourself, take it to a shop. And get a NEW plug first, so the car will not have to sit. My method will render the old plug useless.
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Don't fear the reaper. Last edited by Mo_Gearhead; 08-18-2007 at 07:22 AM.. |
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08-18-2007, 07:19 AM
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19 years and 17k posts...
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Don't use WD-40, it really doesn't help, use PBBlaster or Gibbs lubricant to lube it and give the penetrating oil a day or two to work before applying heat. I used a breaker bar on my socket wrench and got mine off without damaging the plug and then I put copper anti-seize paste on the threads when I reassembled it.
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Art Zasadny 1974 Porsche 911 Targa "Helga" (Sold, back home in Germany) Learning the bass guitar Driving Ford company cars now... www.ford.com |
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08-18-2007, 07:34 AM
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durn for'ner
Join Date: Feb 2005
Location: South of Sweden
Posts: 17,090
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Welcome to the forum!
Very nice car and of course I am partial to that particular color. Are you tracking the car much or driving a lot off road - or just meticulously avoiding stone chips ?  Where are you located ?
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Markus Resident Fluffer Carrera '85 |
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08-18-2007, 07:38 AM
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Registered
Join Date: Jul 2007
Location: S.F. Bay Area
Posts: 534
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I had a friend that had this same problem. He ended up getting one of those Topside Oil Changer tanks and sucked out all of the old gear oil through the filler hole and refilled it with fresh oil. He did it while the trans fluid was warm so that the fluid flowed better. The Topside Oil Changer is designed to drain out the old engine oil through your dipstick tube (on conventional engines) and is very useful for inboard boat engines. It has a long skinny/flexible line which you can manuever through the transmission filler hole. However, you won't be able to clean the magnet on the inside of the lower drain plug.
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08-18-2007, 07:44 AM
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19 years and 17k posts...
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bxtech,
That's a good idea! Nskookum, I forgot to welcome you to the board! Nice car!!
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Art Zasadny 1974 Porsche 911 Targa "Helga" (Sold, back home in Germany) Learning the bass guitar Driving Ford company cars now... www.ford.com |
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08-18-2007, 07:47 AM
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Autobahn Garage
Join Date: Jun 2003
Location: Ohio
Posts: 1,546
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Put some valve lapping compound on the hex bit, drive it in firmly with a hammer and give it a good strong pull the compound will keep the bit from rounding out the plug. PB-blaster is your friend on this sort of thing. Make sure to replace it with a new or good used one if your is rounded out
Good luck
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T Tanner 76, 911s w/ Webers 76, 914/4 57, Speedster |
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08-18-2007, 07:51 AM
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Registered
Join Date: Jul 2007
Location: S.F. Bay Area
Posts: 534
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Topside Oil Changer is here at:
http://www2.northerntool.com/product-1/390306.htm Great tool to have......especially when your automatic transmission fluid is overfilled (not necessarily on your Porsche) and you need to adjust the level! No need to drop the pan! |
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08-18-2007, 07:52 AM
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Slumlord
Join Date: May 2001
Location: Canada
Posts: 4,983
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Make one of these:
Cheap Brake Bleeder Fish the hose down to the bottom of the tranny and suck it out. |
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08-18-2007, 08:10 AM
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Registered
Join Date: Feb 2006
Location: Oahu
Posts: 2,303
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If all else fails, weld a bolt to the plug, and then remove it.
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Jon |
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08-18-2007, 08:27 AM
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Registered
Join Date: Feb 2004
Location: Bay Area (Golf Anyone)
Posts: 384
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Take it to a local muffler shop with a hex bolt and have it welded on. The heat from the weld broke it loose.
_________ 1981 SC |
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08-18-2007, 12:25 PM
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Slumlord
Join Date: May 2001
Location: Canada
Posts: 4,983
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Or drill it out and install a 1/8" NPT plug in the middle.
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08-20-2007, 04:04 AM
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19 years and 17k posts...
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I have a Fermodo drain valve for my lotor oil and it's a spring, ball-valve operated vavle that replaced the drain plug on the oil tank, makes life much easier when changing the oil. I wish they made one for the tranny...
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Art Zasadny 1974 Porsche 911 Targa "Helga" (Sold, back home in Germany) Learning the bass guitar Driving Ford company cars now... www.ford.com |
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08-20-2007, 08:12 AM
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19 years and 17k posts...
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Art Zasadny 1974 Porsche 911 Targa "Helga" (Sold, back home in Germany) Learning the bass guitar Driving Ford company cars now... www.ford.com |
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08-20-2007, 08:14 AM
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19 years and 17k posts...
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Is the tranny drain plug and the oil tank plug the same size, I can't remember? I have the Fumoto drain valve at the bottom of my oil tank and it would be cool to have one at the bottom of the tranny, but I can't remember if the two are the same size. Thanks!
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Art Zasadny 1974 Porsche 911 Targa "Helga" (Sold, back home in Germany) Learning the bass guitar Driving Ford company cars now... www.ford.com |
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08-20-2007, 08:23 AM
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Nskookum
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Any suggestions for removal once the hex is rounded out?
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08-20-2007, 05:34 PM
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Nskookum
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Thanks...I bought it from my best friend who had it for 7 years. It's been tenderly taken care of...not a scratch anywhere. It's my big-boy toy and it is driven from May thru first of November as recreational joy ride. I live in the great northwest part of the US...Spokane Washington to be exact. Great car..great fun.. Love it.
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08-20-2007, 05:40 PM
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Nskookum
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Could you elaborate? Have you done this yourself?
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08-20-2007, 05:45 PM
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AutoBahned
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spot weld a big nut to it
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08-20-2007, 06:06 PM
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MazdaSpeed3
