Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 14-04-2011, 19:00   #16
Do… or do not
 
s/v Jedi's Avatar

Cruisers Forum Supporter

Join Date: Feb 2009
Location: in paradise
Boat: Sundeer 64
Posts: 9,198
Re: Drip Drip Drip! Leaky Banjo Bolt

Yes, annealing copper washers is heating them red hot and dropping them in cold water. But you only need to do this for old washers that have work-hardened, not for new ones.

"Temp" solutions with gasketing material are a risk when you do it beyond the last filter in the system. When debris from the gasketing material enters the injection pump or injector, it often means expensive repair (well, injector not so bad but the pump is real $$$)

p.s.: I'm sure it was over-torqued once.

ciao!
Nick.
__________________

__________________
s/v Jedi is offline   Reply With Quote
Old 15-04-2011, 18:52   #17
Registered User

Join Date: Jan 2008
Location: Nova Scotia, Canada
Boat: Seafarer 30 Impetuous
Posts: 426
Images: 45
Re: Drip Drip Drip! Leaky Banjo Bolt

Be very careful not to tightem too much and possibly strip the threads off of the fuel pump (not the bolt). I did this on my 2Gm a couple of years ago. I didn't notice that the pump was made of aluminum, and I found out the hard way ($170 later).
At the time I figured "another 1/8 turn won't hurt..."
__________________

__________________
Northeaster is offline   Reply With Quote
Old 15-04-2011, 19:25   #18
Registered User
 
WoundedWarrior's Avatar

Join Date: Apr 2011
Location: Ingleside on the Bay, Tx
Boat: 32' Custom by John Howie
Posts: 71
Re: Drip Drip Drip! Leaky Banjo Bolt

if you can't find a new bolt to fit. thread a nut up the bolt, grind the bolt a tad shorter, unthread the nut, this will fix the threads on the bolt as it is removed.

I second the motions regarding the copper washers being good, but the washers with the rubber linings are even better as long as they are fuel resistant.

I am curious though about the heat and quench advice. it confuses me as quenching is used to harden metal. letting it cool down slowly will result in a softer metal. ( case hardened steel is heated, then dipped quickly and removed. this cools the outer layer of steel leaving the center hot to cool down naturally)
__________________
WoundedWarrior is offline   Reply With Quote
Old 15-04-2011, 19:32   #19
Senior Cruiser
 
DeepFrz's Avatar

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Winnipeg
Boat: None at this time
Posts: 7,930
Re: Drip Drip Drip! Leaky Banjo Bolt


How to anneal copper. Heat it up to red hot and let it cool slowly.

Wikipedia says that copper (unlike ferrous metal) can be cooled by quenching in water or allowed to cool slowly.
__________________
DeepFrz is offline   Reply With Quote
Old 15-04-2011, 20:00   #20
Registered User
 
skipgundlach's Avatar

Join Date: Mar 2003
Location: Currently on the boat, somewhere on the ocean, living the dream
Boat: Morgan 461 S/Y Flying Pig
Posts: 1,385
Send a message via Skype™ to skipgundlach
Re: Drip Drip Drip! Leaky Banjo Bolt

Not to hijack the thread, but I have exactly the same problem (if I understand the OP's illustration) on a Perkins 4-154. One of my lines to the injectors from the pressure pump has a very slight leak.

So far, I have not been able to identify a part number to obtain a spare banjo bolt, much less the washers. Finding aluminum washers is very challenging.

Anybody have a PN (and, better yet, a source? - TAD couldn't come up with one, and the parts manual doesn't have a PN for it, either, despite having a part number for each and every other bolt and nut and washer for this engine) for a BB and washers for this beast?

Thanks.

L8R

Skip
__________________
Morgan 461 #2 SV Flying Pig, KI4MPC
See our galleries at www.justpickone.org/skip/gallery!
Follow us at http://groups.yahoo.com/group/TheFlyingPigLog
skipgundlach is offline   Reply With Quote
Old 15-04-2011, 20:08   #21
Registered User

Join Date: Jul 2010
Posts: 32
Re: Drip Drip Drip! Leaky Banjo Bolt

Quote:
Originally Posted by sigmasailor View Post
Soften the washers by making them red hot and cooling them down quickly by dumping in water; you will be amazed at how soft they will get
I thought it was too heat them up but let them cool slowly, doing it the way you suggest makes it harder.
__________________
paralog is offline   Reply With Quote
Old 15-04-2011, 20:55   #22
Registered User
 
WoundedWarrior's Avatar

Join Date: Apr 2011
Location: Ingleside on the Bay, Tx
Boat: 32' Custom by John Howie
Posts: 71
Any auto parts store will have the washers. Vehicles use them where brake line meets caliper.
__________________
WoundedWarrior is offline   Reply With Quote
Old 15-04-2011, 23:51   #23
Certifiable Refitter/Senior Wannbe
 
Wotname's Avatar

Cruisers Forum Supporter

Join Date: Jan 2008
Location: South of 43 S, Australia
Boat: Van DeStat Super Dogger 31'
Posts: 7,330
Re: Drip Drip Drip! Leaky Banjo Bolt

Quote:
Originally Posted by WoundedWarrior View Post
.........

I am curious though about the heat and quench advice. it confuses me as quenching is used to harden metal. letting it cool down slowly will result in a softer metal. ( case hardened steel is heated, then dipped quickly and removed. this cools the outer layer of steel leaving the center hot to cool down naturally)
Quote:
Originally Posted by DeepFrz View Post
How to anneal copper. Heat it up to red hot and let it cool slowly.

Wikipedia says that copper (unlike ferrous metal) can be cooled by quenching in water or allowed to cool slowly.
Well I have used both methods and both work; I prefer to let it cool slowly as that way just seems right and it is always a good reason to stop, have coffee etc.
Disclaimer - I am more of a bush mechanic when it comes to metalwork and I can't quote chapter and verse for best metalwork practices!
__________________
All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
Wotname is online now   Reply With Quote
Old 16-04-2011, 05:09   #24
Registered User

Join Date: Apr 2008
Location: LandLocked USA
Boat: I Want A Catalac
Posts: 58
Re: Drip Drip Drip! Leaky Banjo Bolt

I work copper pipe for a living. The slower that the copper is cooled, the softer it will be when done.
__________________
Woodsy is offline   Reply With Quote
Old 16-04-2011, 05:27   #25
Registered User
 
psneeld's Avatar

Join Date: Oct 2010
Location: Avalon, NJ
Boat: Albin 40 double cabin Trawler
Posts: 1,831
Re: Drip Drip Drip! Leaky Banjo Bolt

Just ran 800 miles using an "o" ring instead of a crush washer with no problems...not the right answer but a temp one that seems to work too.

That's on a 135hp Lehman...not sure if it would work on a Perkins.
__________________
psneeld is offline   Reply With Quote
Old 03-12-2013, 14:21   #26
One of Those
 
Canibul's Avatar

Cruisers Forum Supporter

Join Date: Sep 2006
Location: Turks and Caicos Islands
Boat: Catalac 12M
Posts: 3,209
Re: Drip Drip Drip! Leaky Banjo Bolt

I know this is an ancient thread but I wanted to thank you guys for the annealing tip. You just saved my butt. I had a serious oil leak on one of my Yanmars, and located it about an hour ago. Banjo bolt. Had one copper washer between the bolt head and the fitting, nothing between the fitting and the block. I found some used washers in the "spares" but they looked to be even more squashed than the one that was leaking.

Used the Search function on the forum for banjo bolt washers...just to find out if there should be two on there. And I found out that yeah, there should be two and that I can make two soft ones from the two I have. Hot dang.
__________________
Expat life in the Devil's Triangle:
http://2gringos.blogspot.com/
Canibul is offline   Reply With Quote
Old 03-12-2013, 15:13   #27
Certifiable Refitter/Senior Wannbe
 
Wotname's Avatar

Cruisers Forum Supporter

Join Date: Jan 2008
Location: South of 43 S, Australia
Boat: Van DeStat Super Dogger 31'
Posts: 7,330
Re: Drip Drip Drip! Leaky Banjo Bolt

Thanks for the feedback, sometimes I wonder if these old threads help anyone and now I know they do .
__________________
All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
Wotname is online now   Reply With Quote
Old 03-12-2013, 15:36   #28
Moderator
 
a64pilot's Avatar

Cruisers Forum Supporter

Join Date: Oct 2013
Location: Albany Ga.
Boat: Island Packet 38
Posts: 17,024
The old threads are valuable, I'm just learning, but I use the search function a lot and usually my questions have been asked and answered by others.
__________________
a64pilot is offline   Reply With Quote
Old 11-10-2014, 05:14   #29
Registered User

Join Date: Jan 2009
Posts: 10
Re: Drip Drip Drip! Leaky Banjo Bolt

If anyone reads this forum for advice please do yourself a favour and contact a mechanic with experience here - a Perkins guy. The washers need to be the steel ones especially made to fit (one time use only) and they require a lot of torque. I am still trying to stop the same leak. I was told by the Perkins expert on Mallorca that if the pump seat isn't perfect I would be in for a big bill.
__________________
jimliznorris is offline   Reply With Quote
Old 11-10-2014, 05:46   #30
Registered User
 
skipgundlach's Avatar

Join Date: Mar 2003
Location: Currently on the boat, somewhere on the ocean, living the dream
Boat: Morgan 461 S/Y Flying Pig
Posts: 1,385
Send a message via Skype™ to skipgundlach
Re: Drip Drip Drip! Leaky Banjo Bolt

Quote:
Originally Posted by jimliznorris View Post
If anyone reads this forum for advice please do yourself a favour and contact a mechanic with experience here - a Perkins guy. The washers need to be the steel ones especially made to fit (one time use only) and they require a lot of torque. I am still trying to stop the same leak. I was told by the Perkins expert on Mallorca that if the pump seat isn't perfect I would be in for a big bill.
You're right - but if your seats aren't perfect, you'll still get leaks. I eventually rebuilt mine, after ruining some specific washers on my not-perfect seats.

If you have any pitting, scoring or whatever, you MAY get by with some softer metal; a cruising buddy managed that way, and it held for the couple of years before he sold and CLODed.

Pix (some very close-up - click any thumbnail for larger view) of my travail available at my gallery under 2013-2014 shakedown, here:
Pictures: Flying Pig Shakedown 2013-2014/Injector Pump
__________________

__________________
Morgan 461 #2 SV Flying Pig, KI4MPC
See our galleries at www.justpickone.org/skip/gallery!
Follow us at http://groups.yahoo.com/group/TheFlyingPigLog
skipgundlach is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Can You Determine Correct Packing Drip-Rate at Low / Idle rpms ? sgtPluck Propellers & Drive Systems 5 10-01-2015 23:33
Diesel Drip Feed Heater at Sea atoll Plumbing Systems and Fixtures 0 13-02-2011 14:55
Slow Drip from Impeller - Safe ? sgtPluck Engines and Propulsion Systems 9 15-11-2010 20:54
Leaking Fuel Banjo Fitting Northeaster Engines and Propulsion Systems 8 25-08-2009 20:35
Yanmar 3GM30F Raw Water Drip George P Engines and Propulsion Systems 14 22-05-2009 20:47



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 05:01.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.