Help Needed - Transmission Cooler Radiator Fittings
#1
Junior Member
Thread Starter
Help Needed - Transmission Cooler Radiator Fittings
Hopefully someone can help on an issue with the transmission cooler radiator fittings?
I'm referring to the upper and lower transmission hoses that are connected to the right hand side of the radiator.
I have a major leak from the upper fitting from the union that is fitted to the radiator. The leak is not from the thread but from around the female fitting that sits flush with the outer casing of the radiator. When I screw the male fitting back in place just gentle pressure on the thread causes transmission fluid to gush out around the outer edge of the female end that sits flush with the radiator. Currently the only seal to prevent fluid loss is the metal washer fitted to the male fitting.
A few images to explain what I mean.......
Upper and Lower Transmission Cooler Lines
Upper Transmission Cooler Line - 19mm nut and washer
Female connection on the radiator
Transmission fluid leaks from around this edge
So with the male fitting attached and the pipe connected, just pushing on the fitting will cause transmission fluid to leak. I have tightened the 19mm nut as tight as I dare but still have transmission fluid leaking from behind the washer.
Should tightening the male fitting cause the female end to sit tight with the edge of the radiator and create an air tight seal? Or should the female end already have an airtight seal and so my radiator needs replacing?
Would appreciate some advice from anyone with first hand experience before I spend a further £450 with the main dealer?
I'm referring to the upper and lower transmission hoses that are connected to the right hand side of the radiator.
I have a major leak from the upper fitting from the union that is fitted to the radiator. The leak is not from the thread but from around the female fitting that sits flush with the outer casing of the radiator. When I screw the male fitting back in place just gentle pressure on the thread causes transmission fluid to gush out around the outer edge of the female end that sits flush with the radiator. Currently the only seal to prevent fluid loss is the metal washer fitted to the male fitting.
A few images to explain what I mean.......
Upper and Lower Transmission Cooler Lines
Upper Transmission Cooler Line - 19mm nut and washer
Female connection on the radiator
Transmission fluid leaks from around this edge
So with the male fitting attached and the pipe connected, just pushing on the fitting will cause transmission fluid to leak. I have tightened the 19mm nut as tight as I dare but still have transmission fluid leaking from behind the washer.
Should tightening the male fitting cause the female end to sit tight with the edge of the radiator and create an air tight seal? Or should the female end already have an airtight seal and so my radiator needs replacing?
Would appreciate some advice from anyone with first hand experience before I spend a further £450 with the main dealer?
#4
MBWorld Fanatic!
#5
Junior Member
Thread Starter
Had it confirmed that the male connectors for the transmission cooler are fitted at the factory and should not be removed, otherwise the o-ring seal will be impaired.
This is indeed time for a new radiator.
This is indeed time for a new radiator.
#6
MBWorld Fanatic!
Here are the directions.
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-AJC- (09-25-2017)
#7
Member
Can someone confirm the oil flow for me please? Does it go to the cooler with the fan attached first, then the small cooler on the bottom of the heat exchanger, or does it flow to the small one on the bottom of the heat exchanger first then to the cooler with the fan attached?
thank you.
thank you.
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#8
MBWorld Fanatic!
All radiator oil cooling flow goes into the top line and returned by way of the lower line.
Why the question about the cooling fan?
Why the question about the cooling fan?
#9
Member
Ok, so through the small radiator first then right? need to move it because a much larger heat exchanger is causing it to droop down below the bumper, thanks
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Cajuns Interior (03-10-2020)
#10
MBWorld Fanatic!
What vehicle are we referring to? Be specific.
And what oil, trans. or PS?
And what oil, trans. or PS?
Last edited by Maj. Dundee; 01-08-2019 at 09:17 AM.
#11
both pipes have a joint nearer the radiator
Hopefully someone can help on an issue with the transmission cooler radiator fittings?
I'm referring to the upper and lower transmission hoses that are connected to the right hand side of the radiator.
I have a major leak from the upper fitting from the union that is fitted to the radiator. The leak is not from the thread but from around the female fitting that sits flush with the outer casing of the radiator. When I screw the male fitting back in place just gentle pressure on the thread causes transmission fluid to gush out around the outer edge of the female end that sits flush with the radiator. Currently the only seal to prevent fluid loss is the metal washer fitted to the male fitting.
A few images to explain what I mean.......
Upper and Lower Transmission Cooler Lines
Upper Transmission Cooler Line - 19mm nut and washer
Female connection on the radiator
Transmission fluid leaks from around this edge
So with the male fitting attached and the pipe connected, just pushing on the fitting will cause transmission fluid to leak. I have tightened the 19mm nut as tight as I dare but still have transmission fluid leaking from behind the washer.
Should tightening the male fitting cause the female end to sit tight with the edge of the radiator and create an air tight seal? Or should the female end already have an airtight seal and so my radiator needs replacing?
Would appreciate some advice from anyone with first hand experience before I spend a further £450 with the main dealer?
I'm referring to the upper and lower transmission hoses that are connected to the right hand side of the radiator.
I have a major leak from the upper fitting from the union that is fitted to the radiator. The leak is not from the thread but from around the female fitting that sits flush with the outer casing of the radiator. When I screw the male fitting back in place just gentle pressure on the thread causes transmission fluid to gush out around the outer edge of the female end that sits flush with the radiator. Currently the only seal to prevent fluid loss is the metal washer fitted to the male fitting.
A few images to explain what I mean.......
Upper and Lower Transmission Cooler Lines
Upper Transmission Cooler Line - 19mm nut and washer
Female connection on the radiator
Transmission fluid leaks from around this edge
So with the male fitting attached and the pipe connected, just pushing on the fitting will cause transmission fluid to leak. I have tightened the 19mm nut as tight as I dare but still have transmission fluid leaking from behind the washer.
Should tightening the male fitting cause the female end to sit tight with the edge of the radiator and create an air tight seal? Or should the female end already have an airtight seal and so my radiator needs replacing?
Would appreciate some advice from anyone with first hand experience before I spend a further £450 with the main dealer?
#12
Member
Thanks in advance!
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wankel8 (04-08-2023)