SoCal Jet Boats

Tech Talk => Jet Pumps => Topic started by: N2GLOCK on April 14, 2011, 03:48:55 PM

Title: Oil dripping from rear of Berk jet
Post by: N2GLOCK on April 14, 2011, 03:48:55 PM
I noticed that there is a small amounf of oil leaking from the rear of my Berk jet. I recall that when I had it out and while I was painting it, some oil would drip out of the bowl. But now the jet is in the boat and completeley assembled. Is this normal?
Title: Re: Oil dripping from rear of Berk jet
Post by: Howard19 on April 14, 2011, 04:11:18 PM
There are seals in the bowl that retain 90w so if you see oil its leaking pull the bowl and replace two seals and a bushing
good luck with the repairs  :thumbup:
Title: Re: Oil dripping from rear of Berk jet
Post by: Your Mom on April 14, 2011, 04:25:21 PM
Mine started that so I put a zerk on it and fill with grease.
Title: Oil dripping from rear of Berk jet
Post by: lbhsbz on April 14, 2011, 07:29:58 PM
lets try 2 bushings and 1 seal....

pull the bowl.  if the seal is still there and its soft, its probably still fine.  check the shaft for wear... you'll probably see a groove where the seal rides.

hang on, stupid dogs are going apeshit over something... back in a few
Title: Oil dripping from rear of Berk jet
Post by: lbhsbz on April 14, 2011, 07:49:51 PM
ok, if you've got a groove in the shaft from the seal but the bushing surfaces look OK, make a shim about twice the thickness of a file folder out of something waterproof and put that underneath the seal...that'll put the seal on 'new spot on the shaft.  problem solved.

if your bushing surface of the shaft is worn, htp sells repair sleeves that after a bit of machine work, can salvage the shaft
Title: Re: Oil dripping from rear of Berk jet
Post by: N2GLOCK on April 14, 2011, 08:47:59 PM
My rebuilder finally answered the phone and it sounds like it's normal. I haven't run the jet since it was rebuilt 2 months ago. He says that there is quite a bit of oil laying in the bottom of the bowl. He says it should go away once I run the boat.
Title: Oil dripping from rear of Berk jet
Post by: lbhsbz on April 14, 2011, 09:00:56 PM
you need a new rebuilder.  its not normal.  oil shouldn't leak.....kinda defeats the purpose
Title: Re: Oil dripping from rear of Berk jet
Post by: Ralph Brunt on April 15, 2011, 06:22:56 AM
My rebuilder finally answered the phone and it sounds like it's normal. I haven't run the jet since it was rebuilt 2 months ago. He says that there is quite a bit of oil laying in the bottom of the bowl. He says it should go away once I run the boat.
yeah it will go away when the water washes it all out of the bowl :o it is NOT normal.
Title: Re: Oil dripping from rear of Berk jet
Post by: N2GLOCK on April 15, 2011, 09:12:58 AM
Well I'm not gonna have a heart attack over this...just yet. Today I'll hook up the garden hose and let the boat idle for a minute or two. After that I'll crank the nose of the boat all the way up. I'm leaving town tomorrow and won't be back until wednesday. If I see any signs of oil then, I'll go ahead and have a heart attack and send my rebuilder the bill. I'm not planing on adding any oil just yet. I would estimate that it's leaked 2-4 ozs. at the most since I've had it back. That amount may be an exaggeration. One of my employees seems to think like it's maybe 1-2 ozs. Whatever the case may be, I want this thing right. If I see more oil on wednesday I'll insist that my rebuilder fix the problem. If not, theres always something called small claims court.
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