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Old 12-08-2019, 18:41   #16
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Re: Help about a volvo md7b transmission

Well I might try my luck with someone I know who is a "regular" mechanic and then try my luck with the the ratchet
jcdubreuil is offline   Reply With Quote
Old 13-08-2019, 06:42   #17
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Join Date: Jan 2019
Boat: Beneteau 432, C&C Landfall 42, Roberts Offshore 38
Posts: 5,442
Re: Help about a volvo md7b transmission

If you do manage to find bolts for it and bolt it back together, be sure to use" "loctite" on the bolts so they don't vibrate loose again.
Even though that engine has a big flywheel to smooth rotation, it jumps around quite bit as I recall. Could be the reason that red " coupler" was installed.
I seem to remember my Volvo MD7 as not being very smooth, especially at low rpm.

The " raw water" cooling is another unusual feature of that engine. On my boat, I had to periodically remove the cylinder head so I could ream out the salt residue in the cooling passages around the cylinders. About every 2 years I had to do this. I just lifted the cylinder head, removed the cylinder head gasket and went to work and then just replaced everything, using the same cylinder gasket. It never skipped a beat..

Despite all that, it proved to be a remarkably tough and dependable engine. I had it in my boat for around 10 years, but finally traded it in for the newer 2003 series...even more remarkable, I found out later, that someone had bought my old engine.
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