Bravo 1 top cap oil leak
#1
Registered
Thread Starter
Join Date: Jul 2001
Location: Arlington Hts. Il.
Posts: 693
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
One of my bravo's keeps on blowing the top cap o-ring and leaking oil. I service both drives the same way. What could be the cause of this? I would imagine pressure is being built up in the failing drive. It almost looks as if the o-ring is being pinched on assembly but i am sure that is not the case what could be causing this?
#2
Registered
Join Date: Nov 2003
Location: Fairhaven Ma
Posts: 833
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
Is it the small o-ring? If it is, don't use any grease or sealer because it will squeeze to the inside. Just clean the groove and set it in dry.Use Perfect Seal on the large o-ring but nothing on the small.
#6
Registered
Thread Starter
Join Date: Jul 2001
Location: Arlington Hts. Il.
Posts: 693
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
89' 7.4 330's 300hrs 1.5 B1's 25p mirage 4900rpm max, yes Merc o-rings. Is there any thing that would cause a pressure build up at this point? Is a bravo sealed or is there a vent. I though I remember somthing about problems with the cap on the res. bottle?
Thanks for your input
Thanks for your input
#9
Registered
Join Date: Nov 2003
Location: Fairhaven Ma
Posts: 833
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
Sounds like the top cap is moving around.Makes sense beacuse its the port side w/ L.H. prop. Put on a billet cap w/ stud kit.Billet Marine, Max Worx, Teague all make good billet caps.