Anyone had any issues with oil blowing out of the reservoir vent? The drive has been completely rebuilt a couple years ago. Could there be a need for a drive cooler to keep the oil temp down so it won't expand as much?
Brian
Anyone had any issues with oil blowing out of the reservoir vent? The drive has been completely rebuilt a couple years ago. Could there be a need for a drive cooler to keep the oil temp down so it won't expand as much?
Brian
strange, I've never had that problem. How much are you putting in? I'm pretty sure it takes two quarts of type F trans fluid.
I had KC Marine rebuild mine this winter and opted for their pretty slick "Gaitlin Gun" cooler. I'm not sure if you've seen the stocker, but it's just a single small piece of copper bent in a U.
LINK: http://www.kcmarinetr.com/MercTrans-Oil-Cooler.aspx
DUNESMAN
yep, happens to me too. Refilled the drive with fresh oil cause I thougt I have airbubbles inside, was ok for a while and now starts to do this again. No idea what to do... it is a Bravo 1
Brian,
That reservoir has quite a bit of room for expansion of the drive fluid to where it should not come out if it was not overfilled. I would drain some of your drive fluid to make sure water has not entered the drive. My TRS drives have never puked out fluid, and I don't run drive coolers. Bill
1971 Donzi 18' 2+3
1985 Eliminator 23' Daytona Offshore - Kevlar hull
1988 23' Donzi CC F-23 with 250HP EFI Mercury OB
1989 28' Team Warlock Offshore - single 548CID/600HP
1990 23' Warlock Offshore - single 525HP
Bill from Denison, TX - Lake Texoma
I too would check for overfill or water in there.
***Years ago for some reason, I pulled out the heat exchanger on the MERC II trans, just the simple copper loop and there was a pinhole on that tube that would have introduced water. I can't even remember why I took it out, I think I was just curious but I did catch it by coincidence before any problems happened. I think it pulls out by removing just two bolts, maybe four, can't remember. I'd check that too. Remember water is more dense than oil and you won't see it right off the bat.
DUNESMAN
btw, you might want to call Casey at KC Marine, he's a TRS specialist and would gladly help out with any knowledge, he's a nice and helpful guy.
DUNESMAN
I deleted my prior post! Did hot fully read the first, the few TRS drives I worked on don't remember them puking oil. I did have a couple that cooked the tranny from the cooler being plugged. I would drain and refill carefully and see what happens, it like mentioned could just be a little over filled.
No matter what your beliefs are "GOD BLESS AMERICA"
Fully retired marine tech near 60 years in the biz.
The TRS dives with the Borg-Warner Velvet Drive Trans also has a large multi-tube heat exchanger style oil cooler.
"BENCHSEAT 18" ~~YellowJacket~~ project owner~
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Brad Hunter
Huntingdon Valley Pa (Just outside Philly)~
Ocean City NJ
silverghost1926@msn.com
215 947 4676 (PA Home)
I think a couple of you are thinking it is tranny fluid. The trs has a drive oil reservoir mounted on the transom, mine is on the port side. Matt at TNT rebuilt the drive so I gave him a call. He said to check for water, which I already did, and also that sometimes the drives completey lose all air pockets which leaves no expansion room. He said to drain the drive to the full level at the top plug and refill the reservoir to the full mark on the dip stick and see what happens. I'll let you know if it works in case anyone else ever has this problem. He also said that drive showers are pretty much useless on the trs since they tend not to run as hot as the Bravos.
Brian
Yes, my TRS drives don't even get hot enough to develop the typical mineralization deposits like many other drives. I find it hard to believe that the reservoir is not large enough to handle the slight expansion of the fluid. I actually thought the reservoir concept was there to allow the drive to be totally full of fluid - unlike the drives that must have an expansion area of air at the top or the fluid would puke past the seals as it got hot. Anyway, I will be curious what caused the puking in your case. I have to presume that this is a new development. Bill
1971 Donzi 18' 2+3
1985 Eliminator 23' Daytona Offshore - Kevlar hull
1988 23' Donzi CC F-23 with 250HP EFI Mercury OB
1989 28' Team Warlock Offshore - single 548CID/600HP
1990 23' Warlock Offshore - single 525HP
Bill from Denison, TX - Lake Texoma
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