Sealing up the C6
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Cargo Master
Joined: Sep 2004
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Sealing up the C6
Spent the better part of the day pulling her out yesterday. What a process. Got a couple Q's now.
The entire housing is caked in oil soaked dirt. Both cross members were coated in an inch of the stuff. It was so bad that the stuff kept falling every time I touched anything, I got tons of it in my eyes and I was rolling around under the truck in it. I had to throw away my clothes. Anyway, it looks like oil has been leaking from the top rear of the engine. I'm thinking valve covers at a minimum. I put new gaskets on them a few weeks ago so I know that leak is stopped. (Q1) Can the intake manifold leak oil? I didn't think oil flowed through it but I guess I'm not sure.
I pulled the torque converter out. Looking into the bell housing there's a big ole plate held on by 7 bolts (not sure what the plate is called). I have the gasket for it. My question is: (Q2) can I just remove and replace or is there a process I need to follow so parts don't fall out all over the place? I don't want springs and bearings jumping out and bouncing all over the neighborhood.
And lastly, I have a power washer I can use to clean the housing. (Q3) Should I do it or do I risk damage?
The entire housing is caked in oil soaked dirt. Both cross members were coated in an inch of the stuff. It was so bad that the stuff kept falling every time I touched anything, I got tons of it in my eyes and I was rolling around under the truck in it. I had to throw away my clothes. Anyway, it looks like oil has been leaking from the top rear of the engine. I'm thinking valve covers at a minimum. I put new gaskets on them a few weeks ago so I know that leak is stopped. (Q1) Can the intake manifold leak oil? I didn't think oil flowed through it but I guess I'm not sure.
I pulled the torque converter out. Looking into the bell housing there's a big ole plate held on by 7 bolts (not sure what the plate is called). I have the gasket for it. My question is: (Q2) can I just remove and replace or is there a process I need to follow so parts don't fall out all over the place? I don't want springs and bearings jumping out and bouncing all over the neighborhood.
And lastly, I have a power washer I can use to clean the housing. (Q3) Should I do it or do I risk damage?
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 785
From: Simi Valley, CA
Spent the better part of the day pulling her out yesterday. What a process. Got a couple Q's now.
The entire housing is caked in oil soaked dirt. Both cross members were coated in an inch of the stuff. It was so bad that the stuff kept falling every time I touched anything, I got tons of it in my eyes and I was rolling around under the truck in it. I had to throw away my clothes. Anyway, it looks like oil has been leaking from the top rear of the engine. I'm thinking valve covers at a minimum. I put new gaskets on them a few weeks ago so I know that leak is stopped. (Q1) Can the intake manifold leak oil? I didn't think oil flowed through it but I guess I'm not sure.
I pulled the torque converter out. Looking into the bell housing
there's a big ole plate held on by 7 
bolts (not sure what the plate is called). I have the gasket for it. My question is: (2) can I just remove and replace or is there a process I need to follow so parts don't fall out all over the place? I don't want springs and bearings jumping out and bouncing all over the neighborhood.
The entire housing is caked in oil soaked dirt. Both cross members were coated in an inch of the stuff. It was so bad that the stuff kept falling every time I touched anything, I got tons of it in my eyes and I was rolling around under the truck in it. I had to throw away my clothes. Anyway, it looks like oil has been leaking from the top rear of the engine. I'm thinking valve covers at a minimum. I put new gaskets on them a few weeks ago so I know that leak is stopped. (Q1) Can the intake manifold leak oil? I didn't think oil flowed through it but I guess I'm not sure.
I pulled the torque converter out. Looking into the bell housing
there's a big ole plate held on by 7 bolts (not sure what the plate is called). I have the gasket for it. My question is: (2) can I just remove and replace or is there a process I need to follow so parts don't fall out all over the place? I don't want springs and bearings jumping out and bouncing all over the neighborhood.There's no bell housing with an A/T, it's called a converter housing. But on a C6, it's made as part of the transmission case.
C6 flexplate retained to the converter with 4 special locking nuts that should not be reused. This C6 360/390 flexplate (C5AZ-6375-D) is also the same as 352/MX Cruise-O-Matic.
378941-S441 (replaced 378941-S78) .. 3/8" -24 Flexplate to Converter Lock Nut / Available from Ford. Same: Ford-O-Matic - FX/FMX/MX Cruise-O-Matic - C3/C4/C5/C6 - AOD - E4OD and etc. etc. etc!
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Cargo Master
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Are these the nuts? https://www.ford-trucks.com/forums/1...late-nuts.html
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 785
From: Simi Valley, CA
Good to know. I have a new flex plate. The old one was near toothless.
Are these the nuts? https://www.ford-trucks.com/forums/1...late-nuts.html
See my post #4 in this thread.
Are these the nuts? https://www.ford-trucks.com/forums/1...late-nuts.html
See my post #4 in this thread.
And...see my post #2 in this thread.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
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From: Simi Valley, CA
You won't need C6AZ-7086-A unless you separate the extension housing from the case.
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Cargo Master
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Ford Parts Specialist
Joined: Nov 2006
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From: Simi Valley, CA
Do NOT reuse the converter lock nuts over again! Within the treads is a nylon insert, that wears down when the nuts are removed.
If used again, the flexplate will begin to wobble on the converter, make a knocking sound...because the lock nuts have lost their effectiveness to retain the flexplate in place.
Knock knock, who's there? Nuts. What nuts? Worn converter lock nuts.
If used again, the flexplate will begin to wobble on the converter, make a knocking sound...because the lock nuts have lost their effectiveness to retain the flexplate in place.
Knock knock, who's there? Nuts. What nuts? Worn converter lock nuts.
Cargo Master
Joined: Oct 2011
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From: Kenner,La.
front pump
Stand the transmission vertically or hang it from an engine hoist to replace the pump"O" ring and gasket. The best way to clean the outer case for me was a couple cans of oven cleaner. Good luck
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Cargo Master
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EDIT: n/m . . . got it. I just put a coupla Vise Grips on the casting ribs and put a slide hammer on it and slowly pounded it out. It's about ready to go back in.
c6