Leaking differential fill plug
Thread Starter
Melting Slicks
Joined: Mar 2008
Posts: 2,453
Likes: 347
From: SC
Leaking differential fill plug
Has anybody had a problem with fluid seeping out the fill plug? It seems tight, I don't want to over tighten if that's possible. Dripping down right below the plug and it was slightly wet. Can the washer be reused, as I just had the fluid level checked. Maybe they didn't replace it. I will check tomorrow to see if the washer is there.
Le Mans Master
Joined: May 2007
Posts: 5,393
Likes: 17
From: Belleville Mich.
You don't mention what kind of tranny that you have & you don't state
it in your profile.
If you have a manual tranny, pull the fill plug out & put teflon tape on
the threads.
OOP"s my bad. You said differential not tranny.
Tape would work there also, As LonestarFRC stated, there should be a
washer on there.
it in your profile.
If you have a manual tranny, pull the fill plug out & put teflon tape on
the threads.
OOP"s my bad. You said differential not tranny.
Tape would work there also, As LonestarFRC stated, there should be a
washer on there.
Last edited by bumble-z; Jun 28, 2011 at 08:03 AM.
Team Owner
Joined: May 2001
Posts: 36,836
Likes: 244
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
No. I haven't.
Level should not be high enough to "leak" in the first place. Make sure car is level, remove plug and let any "excess" (if there is any) drain on it's own and re-install plug. It will stop when the level reaches the lower edge of the fill hole.
GM part number for the gasket is 12369215. The fill plug and the drain plug use the same gasket. I would just go ahead and buy one and have it on hand to replace after doing the above.
Level should not be high enough to "leak" in the first place. Make sure car is level, remove plug and let any "excess" (if there is any) drain on it's own and re-install plug. It will stop when the level reaches the lower edge of the fill hole.
GM part number for the gasket is 12369215. The fill plug and the drain plug use the same gasket. I would just go ahead and buy one and have it on hand to replace after doing the above.
Team Owner
Joined: May 2001
Posts: 36,836
Likes: 244
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Thread Starter
Melting Slicks
Joined: Mar 2008
Posts: 2,453
Likes: 347
From: SC
No. I haven't.
Level should not be high enough to "leak" in the first place. Make sure car is level, remove plug and let any "excess" (if there is any) drain on it's own and re-install plug. It will stop when the level reaches the lower edge of the fill hole.
GM part number for the gasket is 12369215. The fill plug and the drain plug use the same gasket. I would just go ahead and buy one and have it on hand to replace after doing the above.
Level should not be high enough to "leak" in the first place. Make sure car is level, remove plug and let any "excess" (if there is any) drain on it's own and re-install plug. It will stop when the level reaches the lower edge of the fill hole.
GM part number for the gasket is 12369215. The fill plug and the drain plug use the same gasket. I would just go ahead and buy one and have it on hand to replace after doing the above.
Tech Contributor
Joined: May 2008
Posts: 3,100
Likes: 17
From: Somers, CT and Clermont, FL
St. Jude Donor '09-'10-'11-'12-'13-'14-'15-'16
Hot fluid also expands in volume, which causes the level to be higher in the housing.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
When the diff cools down the vent valve SHUTS and the diff is held under a slight vacuum... Thats most likely why it doesnt leak sitting cold.
Your seal is either damaged or missing. I would remove the plug (If your quick with the thumb, only minimul oil will leak out.) and install a new seal ring on the drain plug.
BC
Your seal is either damaged or missing. I would remove the plug (If your quick with the thumb, only minimul oil will leak out.) and install a new seal ring on the drain plug.
BC
Thread Starter
Melting Slicks
Joined: Mar 2008
Posts: 2,453
Likes: 347
From: SC
When the diff cools down the vent valve SHUTS and the diff is held under a slight vacuum... Thats most likely why it doesnt leak sitting cold.
Your seal is either damaged or missing. I would remove the plug (If your quick with the thumb, only minimul oil will leak out.) and install a new seal ring on the drain plug.
BC
Your seal is either damaged or missing. I would remove the plug (If your quick with the thumb, only minimul oil will leak out.) and install a new seal ring on the drain plug.
BC
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Tech Contributor
Joined: May 2008
Posts: 3,100
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From: Somers, CT and Clermont, FL
St. Jude Donor '09-'10-'11-'12-'13-'14-'15-'16
