Twin Disc MG 506 RH 1980

I’ve developed an issue with my starboard clutch.

I check the oil when it’s cold and has been sitting not running it should be way up on the stick and it’s not it’s right at full.

I start the engine up at idle check the oil again and the oil is high up on the stick and when I put it in forward my oil pressure drops down to 180-225 psi..it fluctuates at idle when I give it some throttle up to 700 or 800 RPM jumps right up to 350psi.

reverse the pressure does not fluctuate.

Oil is clean and fresh screen is clean and fresh I just did the work a month ago and it was doing it before I did the fresh oil and screen the screens been clean the whole time.

Any ideas I’d appreciate it.
Thanks

Before and since.
Same as the engine oil 40 weight cf2.
It went away for a little bit about 14 hours of running time but now it’s come back.

when at operating temperature The pressure gauge dances around while in forward at 600 RPM.
Increase RPMs to 700 or 800 and the pressure goes up to 325 or so.
And stays steady.

650 700 rpms is my idle speed.


Everything’s mechanical.

I will check that out and see how it does I’ll remove the linkage moving forward and reverse at the dock

I still don’t understand why all the oil is not draining back into the sump like the other side…

Correction my oil pressure gauge is electric.
I replaced the sender around a year ago and everything was fine.

Engines idle closer to 700 rpm.

Oil pressure gauge dances around when hot, between 200 to 300 psi ..it varies in general when in forward at idle.
Reverse seems to be steady at 325.

Bump up the throttle to 800 or more rpms and the pressure goes up to 325 and stays stationary. This is my normal reading .

I replaced the sender over a year ago with no problems . Old sender was shot. Not reading at all.

I know how to check the oil.
Running at idle , bump motor into gear forward , reverse.
The proper way is at warm operating temperature. Which I have not done.

I also check them when cold not running, just to see the oil color /condition.
The oil is up past full due to the oil drainage back into the sump.
I know the “cold not running “ mark on my dip stick.

Now the problem motor no longer is above the full mark when she sits.
Just at full.
It should be above full.

start her up and the level is now well above the full mark…
Seems to me the oil is getting blocked up some how .
The blockage or whatever won’t let the oil drain back into sump .
I’ve go the correct amount of oil in .
It’s stamped on the twin disc plate 1.3 gallons. When I change the oil, I put in one gallon and start checking from there to get to full.
I hope this clarifies things ?

All this being said, I am Busy this weekend putting my Chris-Craft Dory in the water and getting that ready.
Time to pay attention to my bow rail before it goes bouncing off the boat into Cape May Harbor Avenue tighten it down just a bit the best I can and the fuel gauge isn’t working now.

I must be sick in the head to have two old boats!

Update;
Shift lever is going full travel F-N-R with or without cable connected .
No loose cable connections etc.

Oil is back up past full on the stick as it should be cold not running . This is my “normal” .
I did not have time to run it yet , will report back in a few days.

Any twin disc transmission that I’m aware of when sitting cold , not running is up on the dipstick.

doesn’t matter if you wait five seconds or it sits all night long or for a week oil drains back into the sump .

I did not check it yet at idle and normal operating temperature I will do that next week. Need to get her away from the dock for that.

I do / did read it cold with out wiping.

CR I’m not arguing, just not good at putting my thoughts down on e-mail paper. Or reading for that matter.

And I do know the old time general rule ; check motors cold , transmission/clutch hot .
But I do cold with out wipe, for a quick look over on the oil and how it looks.

CR!
Yes it was , now it’s acting right…

I will be using the boat this weekend for the Fourth of July and why not I’ll let you know next week what happens the problem seems to come and go.

I appreciate all your help and sorry for the confusion I’ll try and clarify things a little better on my next post.
I can be a bit of a bull in a China shop sometimes.

Lol!!
Oh Boy, yeah the boat missed you.

Yes will do.
I think you might be right on the overfill.

I will check it hot this weekend and quit messing around .

Hope your holiday trip goes well.
Enjoy! But don’t be getting into any disagreements with the CG or the MP while enjoying your anchor ball!

I got a good spot we always go to here in Cape May. Like I almost always due in life when other go right , I go left . I always get the same anchor spot with no agg and great views of the fire works along with minimal rocking from traffic when I go left out the CM Canal.
There’s room to share I don’t care blabbing about it.