Lower Unit Screws

[Mac_Attack]

I have a Force 150 1990, *When I first bought the boat I changed the whole pump asembly. On my motor the oil does not have to be drained as lond as you keep motor verticle. *Bill Mc *;D

[fillet1]

Bill,

The lower unit had a new outside seal installed in march of this year, was pressure tested, and had new oil put in it. At least that is what I paid for. I didnt see what kind of oil was put in it. I tried to call you at home -no answer.

[chumbucket]

Well, with any luck, it is just the screw gaskets that caused some minor leakage. Sounds like no real damage done. I would do as suggested; Install new screws with gaskets (washers), fresh lower unit oil, then keep an eye on it. Should be nothing to worry about. ;)

[Skools Out]

have you gotten them out yet? i have used a hand held impact tol that you turn with pressure like your unscrewing and hit it with a hammer.
Can take a healthy screw driver and hit it with a hammer to try the same thing. No need to buy lower unit oil. Gear Oil is the exact same thing. Buy 80 weight gear oil at local auto store. Better off to buy Syn. 80 Gear Oil. Much cheaper and same thing as lower unit oil.

[Skools Out]

this is best stuff since sliced bread. It really works. Just add the correct amount to a quart of the gear oil before you put each one in the lower unit. Shake it then put in the lower unit it will seal it tight as a V_ _ _ _ N. Heck i use the same gear oil with sealant in my air compressors.

http://cgi.ebay.com/STOP-OIL-LEAKS-I...spagenameZWDVW

[willy]

Hey Lord Skools what color is that stuff. and what color is that sealant your talking about? Did you read the whole post about the stuff that came out being clean no shavings no dirt and almost a solid off white and approx two tablespoons of water tops in unit, Filett says the lower seal was done in march, and lower unit serviced along with impeller. The stuff is like a whitish oil no black at all. Only thing visibly wrong was the lower drain screw was put back without washer, upper had the white washer

[reelapeelin]

Willy, take it to a tech who can PRESSURE TEST the lower unit...obviously there's a water intrusion problem of some kind and that'll locate it...then do the seal-kit or whatever it takes from there...talk to the tech about how to get as much of that crud outta there as possible... ;)...

Best to check lower-unit oil when purchasing used OB...my old '86 Rude wasn't as bad as you describe, but WAS in need of changing... ;)...

[willy]

Gotcha Rap

[Skools Out]

yeah if it had water it has a leak. Or a bad screw seal as stated earlier. Some Lower unit oil is off white or cream gray. Most shops don't use lower unit oil they just buy 80w Gear Oil which comes in tons of colors so without seeing it before it was put in no way of knowing if it was suppose to be that color. Last Gear oil i bought i got Red so i could tell if it got water in it. That sealant is Clear and thin. I had a V-6 resealed and shimmed it cost $250 and i took it off to save the removal fee. They provided the seal kit and the shims.

That sealant did stop a major leak in my Hydro-Brake Booster in my Tahoe. It was leaking out of the Hydro's Cylinder.

[willy]

Thanks Skools ;)