Pulling Transmission....Any Concerns?
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Boat Maintenance
Forum Discription: Discuss maintenance of your Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=12060
Printed Date: September-29-2024 at 3:28pm
Topic: Pulling Transmission....Any Concerns?
Posted By: davidg
Subject: Pulling Transmission....Any Concerns?
Date Posted: September-28-2008 at 4:22pm
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I am lining up this winters projects and I think I have found the major one for the boat. The Escort 351W in my '76 Southwind 18 is leaking oil big time from the rear main seal. I plan on pulling the engine/transmission to get at at the rear main (and paint and detail the engine as well). While I am at it, I may re-ring the pistons for better compression, but that will be a new post.
Is there a special trick or consideration in pulling the trans off, and reinstalling as long as everything is aligned the same way? Seems like I had read something about indexing the engine or trans?? Just looking for any advice before I do any harm or reinstall the wrong way. Thanks! Dave |
Replies:
Posted By: 8122pbrainard
Date Posted: September-28-2008 at 4:42pm
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Dave,
The indexing is for a engine rotation change only. IE: if you go from a RH to a LH engine. It's really flopping the pump in the trans around so it will build pressure for the given engine rotation. Before you pull the engine, you should check the prop shaft to engine alignment to see if this is the cause of the seal leak. Bad alignment will blow the rear end of the trans. Don't forget to install a new dampener plate while you have it out. Did you run a compression and leak down to determine if the bad compression is due to rings? Forgive me if it has been brought up before!!! ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: davidg
Date Posted: September-28-2008 at 5:07pm
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Pete;
I had the prop shaft straightened this past spring, and installed a new coupler and aligned it to .003 on all around the coupler when puttng it back in. So, I think the everything is in good shape there. And, I will re-check that when reinstalling as well. Everytime I use the boat, the bilge has 1/4 qt. of engine oil in it, so I put a piece of cardboard under the engine to see where it was coming from and the rear main seems to be the main culprit. By the way, is the dampener plate the same thing as the "flex plate" on a cars automatic transmission....or the plate that couples the engine crankshaft and the torque converter? Dave |
Posted By: 8122pbrainard
Date Posted: September-28-2008 at 8:12pm
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Dave,
Well here's another case of my not reading a post closely! I'm thinking the rear trans and not the rear main of the engine. Sorry!! Yes, the dampener is a flex plate. It's a spring loaded coupling between the flywheel and the trans input shaft. 
This is a universal type with 7 sets of holes in it to fit almost any engine. The last one I got by doing a online search. Cheaper than Skidim and I didn't want to bother Eric. It's a Sachs brand. I'm assuming you have a Velvet Drive. I did need to trim the OD for my 302. My 312 I did maybe 10 years back and trimming wasn't needed. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: davidg
Date Posted: September-28-2008 at 9:36pm
| Thanks Pete! Good info. |
Posted By: eric lavine
Date Posted: September-29-2008 at 11:46am
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some more good info, dont drop it on your feet ------------- "the things you own will start to own you" |
Posted By: davidg
Date Posted: November-02-2008 at 11:54pm
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Eric...Your advice of not dropping it on my feet was also very good. I got the engine pulled out this weekend, and the transmission and bellhousing off. That tranny is HEAVY.
Rear Main Seal Question....The boat is a '76 (351 Escort), the engine runs fine but does have a bad oil leak (rear main seal is bad). Does anyone know if the rear main seals used in '76 was the rope type? Someone told me they thought it was. SKIDIM has a two peice neoprene rubber one they say will fit right in. If there is a rope type in there now, there may be a little nub on the cap that holds the rope in place. Anybody have experience with that?? I assume it will have to be machined off to get the neopreone two peice to fit in properly. The engine is going to be my winter project. It is currently Escort White, and looks bad from years of use. I am going to paint it dark Ford blue and get it looking good. |
Posted By: Gary S
Date Posted: November-03-2008 at 1:02pm
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David- if it does in fact have a rope seal there will be what looks like pin to keep the rope from turning.I can't remember if it's in the cap or the block but it does pull out.When I get a chance I'll check my Ford book- ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1711&sort=&pagenum=1&yrstart=1966&yrend=1970" rel="nofollow - 69 Mustang HM SS 95 Nautique Super Sport |
Posted By: Gary S
Date Posted: November-05-2008 at 10:50pm
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David the pin is supposed to be in the cap and my Ford book says be careful when you remove the pin, you want to support the cap so you don't spring it. The your supposed to put silicone in the pin hole so it dont leak ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1711&sort=&pagenum=1&yrstart=1966&yrend=1970" rel="nofollow - 69 Mustang HM SS 95 Nautique Super Sport |