Reply
 
Thread Tools Search this Thread
 
Old 16 July 2018, 17:15   #1
alt
Member
 
Country: Ireland
Town: Galway, West Eire
Make: Cranchi
Length: 5m +
Engine: 2 x Volvo KAD300
Join Date: May 2006
Posts: 654
Send a message via MSN to alt
BF90 - Gear Oil leak from.... WATER INTAKE?!

Is this even possible?

Friend took his RIB out the other day. I was looking at it earlier and spotted a small bit of gear oil on the ground. Traced it up to the bottom of the water intake holes... is this even possible?

Defo not from the oil fill plug.
__________________

__________________
alt is offline   Reply With Quote
Old 16 July 2018, 17:28   #2
Member
 
Last Tango's Avatar
 
Country: UK - Scotland
Town: Denny
Boat name: Hebridean Storm
Make: Coastline
Length: 6m +
Engine: Mariner F150
MMSI: 235107505
Join Date: Mar 2013
Posts: 1,153
Quote:
Originally Posted by alt View Post
Is this even possible?

Friend took his RIB out the other day. I was looking at it earlier and spotted a small bit of gear oil on the ground. Traced it up to the bottom of the water intake holes... is this even possible?

Defo not from the oil fill plug.
There'll be an oil seal for the drive shaft at the top of the gearbox under the water pump so........yes it's possible. Pressure test then probably gearbox and water pump off to get at it.
__________________

__________________
Last Tango is offline   Reply With Quote
Old 16 July 2018, 17:28   #3
alt
Member
 
Country: Ireland
Town: Galway, West Eire
Make: Cranchi
Length: 5m +
Engine: 2 x Volvo KAD300
Join Date: May 2006
Posts: 654
Send a message via MSN to alt
So after a bit of Googling, it appears it could be either the drive-shaft seal or the shift-selector seal.... time to take the drive off and pressure test, I guess (unless it's gonna be obvious when leg taken off)
__________________
alt is offline   Reply With Quote
Old 16 July 2018, 17:33   #4
Member
 
Last Tango's Avatar
 
Country: UK - Scotland
Town: Denny
Boat name: Hebridean Storm
Make: Coastline
Length: 6m +
Engine: Mariner F150
MMSI: 235107505
Join Date: Mar 2013
Posts: 1,153
Quote:
Originally Posted by alt View Post
So after a bit of Googling, it appears it could be either the drive-shaft seal or the shift-selector seal.... time to take the drive off and pressure test, I guess (unless it's gonna be obvious when leg taken off)
If it's the gearshift seal the oil is more likely to come out of the exhaust than the water inlet holes. But if you're stripping to replace one, it might be worth doing both. Oil seals are not expensive.
__________________
Last Tango is offline   Reply With Quote
Old 16 July 2018, 17:38   #5
alt
Member
 
Country: Ireland
Town: Galway, West Eire
Make: Cranchi
Length: 5m +
Engine: 2 x Volvo KAD300
Join Date: May 2006
Posts: 654
Send a message via MSN to alt
Quote:
Originally Posted by Last Tango View Post
If it's the gearshift seal the oil is more likely to come out of the exhaust than the water inlet holes. But if you're stripping to replace one, it might be worth doing both. Oil seals are not expensive.
Wouldn't mind but I helped him change the impeller not so long ago... i'm almost certain the seal was included but he was too impatient to change the seal at the same time.
__________________
alt is offline   Reply With Quote
Old 16 July 2018, 17:40   #6
Member
 
dubrus's Avatar
 
Country: UK - Scotland
Town: Glasgow
Make: Ribcraft 6.8
Length: 6m +
Engine: Suzuki df200
Join Date: Jun 2010
Posts: 2,581
At least you caught it, had a gearbox go bang years ago for same failure whilst out, I mean BANG btw, 10p seal cost over 1000 quid in gears
__________________

__________________
dubrus is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 19:57.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.