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Transmission oil pan leak
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Posted 1/30/2015 10:12 AM
Boy G
Expert


Date registered: Feb 2007
Location: Bushveld, South Africa
Vehicle(s): Diesel G's: 617A and 602
Posts: 1683
1000
Transmission oil pan leak

I cant stop an oil leak from the auto tranny pan. I have just fitted a new gasket and carefully paid attention to the recommended torque settings, to no avail. It still leaks. Any suggestions please?
#226494
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Author
Posted 1/30/2015 10:18 AM
Doug Nel
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Date registered: May 2006
Location: Cape Town, South Africa
Vehicle(s): 1982 280GE 5 door automatic
Posts: 258
100
RE: Transmission oil pan leak

Hi Andrew

Had the same issue on my 280 Autobox. Hylomar sorted out my leak. Also just confirm if that is where it is coming from. On Greg's G what appeared to be a sump leak turned out to be 2 leaks. One at the kickdown solenoid and the other at the Dipstick connection into the box.
#226496 - in reply to #226494
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Author
Posted 1/30/2015 11:56 AM
H1LM002G55
Expert




Date registered: Mar 2010
Location: S Florida / Geneva / Jeddah
Vehicle(s): 500 GE, G55, LM002, H1
Posts: 1796
1000
Re: Transmission oil pan leak

I had an oil pan that had been bumped in the corner and I needed a new pan that I had to order from Austria. It would hold fluid with no issue, but, there was still a leak in that corner from it not sealing correctly.
Check that your pan is dimensionally correct. I ordered a new pan and seal and it was convenient as I was able to install the transmission pan magnet as well. See my earlier post about this.

Edited by H1LM002G55 1/30/2015 11:57 AM
#226497 - in reply to #226494
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Author
Posted 1/30/2015 1:17 PM
Boy G
Expert


Date registered: Feb 2007
Location: Bushveld, South Africa
Vehicle(s): Diesel G's: 617A and 602
Posts: 1683
1000
RE: Transmission oil pan leak

Doug Nel - 1/29/2015 4:18 PM

Hi Andrew

Had the same issue on my 280 Autobox. Hylomar sorted out my leak. Also just confirm if that is where it is coming from. On Greg's G what appeared to be a sump leak turned out to be 2 leaks. One at the kickdown solenoid and the other at the Dipstick connection into the box.


I am reasonably sure its the pan that leaks. I am concerned about using a sealer which may gloop out into the works. I do not know Hylomar?
#226500 - in reply to #226496
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Posted 1/30/2015 1:41 PM
H1LM002G55
Expert




Date registered: Mar 2010
Location: S Florida / Geneva / Jeddah
Vehicle(s): 500 GE, G55, LM002, H1
Posts: 1796
1000
Re: Transmission oil pan leak

Hylomar is used to seal the gasket when installing the CV boots over the center drive shaft CV joints/homokinetic joints. If your pan is leaking just buy a new pan and seal. For my 722.3 it was about $100 USD total a few years back.
#226501 - in reply to #226494
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Posted 1/31/2015 11:53 AM
Boy G
Expert


Date registered: Feb 2007
Location: Bushveld, South Africa
Vehicle(s): Diesel G's: 617A and 602
Posts: 1683
1000
Re: Transmission oil pan leak

H1LM002G55 - 1/29/2015 7:41 PM

Hylomar is used to seal the gasket when installing the CV boots over the center drive shaft CV joints/homokinetic joints. If your pan is leaking just buy a new pan and seal. For my 722.3 it was about $100 USD total a few years back.


Gotcha. I suspect the pan.
#226507 - in reply to #226501
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Posted 1/31/2015 5:37 PM
H1LM002G55
Expert




Date registered: Mar 2010
Location: S Florida / Geneva / Jeddah
Vehicle(s): 500 GE, G55, LM002, H1
Posts: 1796
1000
Re: Transmission oil pan leak

After buying a new transmission pan and transmission pan gasket I had zero leaks. I would not use hylomar. But that is me. Buy an OEM pan and OEM transmission pan gasket and be done with it.
Again, do not forget, add a magnet to the pan. Cheap insurance.

Edited by H1LM002G55 1/31/2015 9:23 PM
#226514 - in reply to #226507
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Author
Posted 2/1/2015 6:03 AM
Boy G
Expert


Date registered: Feb 2007
Location: Bushveld, South Africa
Vehicle(s): Diesel G's: 617A and 602
Posts: 1683
1000
Re: Transmission oil pan leak

Thank you. I will report back in due course.
#226525 - in reply to #226494
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