Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 25-12-2009, 10:49   #1
Registered User

Join Date: Mar 2007
Posts: 51
'Checking' Hoses - When to Replace?

How does one `check' a hose to see if it needs replacing? In particular, I have various hoses on my boat that are older hoses with no ABYC rating on them. They are heavy duty hoses, some with fabric reinforcing, but have varying amount of cracking on the exterior. Are there any standards for inspecting hoses? Is `some' cracking okay? If so, how much? Are there guidelines that marine surveyors use? Of course, what purpose these different hoses are serving (above waterline, below waterline, exhaust, cockpit draining, lazarette draining, etc.) certainly is a factor. But I have been unable to find any guides on how to inspect and `check' a hose, only general recommendations to `check' hoses and replace if needed. And I am well aware that the cost of replacing a hose is usually much cheaper than the cost of a leak or failure and allows one to sleep better at night. BUT, still, how does one inspect a hose?? I have replaced cracked hoses before but have been surprised that, despite considerable cracking on the exterior, the interior seemed quite pliable and appeared to have a lot of life left to it.


Michael Jones is offline   Reply With Quote
Old 25-12-2009, 11:03   #2
Moderator Emeritus
Ex-Calif's Avatar

Cruisers Forum Supporter

Join Date: May 2007
Location: Singapore
Boat: Maxi 77 - Relax Lah!
Posts: 11,514
Images: 4
There are few standards for boating. Aviation hoses do not have a life limit but properly do have a date of manufacture stamp. There is no life limit for hoses mandated by the FAA but AC43.13 (sort of a standard practice guide) generally recommends 5 years as a service life.\

With little else available I use this as a standard practice...

Relax Lah! is For Sale <--- Click
Click--> Custom CF Google Search or CF Rules
You're gonna need a bigger boat... - Martin Brody
Ex-Calif is offline   Reply With Quote
Old 25-12-2009, 11:44   #3
Moderator Emeritus
David M's Avatar

Cruisers Forum Supporter

Join Date: Sep 2007
Location: San Francisco Bay
Boat: research vessel
Posts: 9,844
I don't think there is a fixed amount of time. It depends on the service, environment and the quality of the hose.

One certain sign is any cracking of the material. One thing to do occasionally is to grab a hose and try to pull it off by hand. Check your clamps for any excessive oxidation, especially around the worm screw.

Personally, I would not keep any hose for more that ten years which has the potential of flooding the boat. Some hoses will need to be changed out sooner than that.

Life begins where land ends.
David M is offline   Reply With Quote
Old 25-12-2009, 12:23   #4
Boracay's Avatar

Cruisers Forum Supporter

Join Date: Feb 2004
Location: Pelican Bay, Great Sandy National Park
Boat: Steel Roberts Offshore 44
Posts: 5,175
Images: 18
Cracking up...

I would not accept any cracking of any mission critical (below the waterline, fuel) hose.

In my opinion they should be replaced as soon as possible, together with any clamps holding them on. The through hulls and seacocks should be carefully checked at the same time.

Any cracking of any item on a boat (maybe not the top of a freshly baked cake) is a sign of damage and needs to be attended to promptly.
Rust never sleeps
Boracay Blog.
Boracay is offline   Reply With Quote
Old 25-12-2009, 12:26   #5
Registered User
Sandero's Avatar

Join Date: Apr 2006
Location: Southern Westchester/Northport LI
Boat: Shiva - Contest 36s
Posts: 3,890
Certainly any sign of external failure is cause to replacement. If you intend to keep the boat for a long time set up a rotating schedule. That means you are checking on them regularly.
Sandero is offline   Reply With Quote
Old 25-12-2009, 12:44   #6
Registered User
sailvayu's Avatar

Join Date: Mar 2006
Location: Fort Myers FL
Boat: Irwin 40
Posts: 878
As a surveyor I will write up any hose with cracking or that has become hard. I also look for splitting at the ends usually under the clamps. I check clamps as well. One hose that is often overlooked is the stuffing box hose. I would say change this anytime the shaft is out and at least once every 10 years or less. The manufactures of fuel hose recommend they be replaced every 5 years although it is hardly done that often. I like to grab the hose and see how easily it flexes this gives a clue to its condition. Exhaust hoses should be replaced every 10 years as well. Like most things it comes down to commen sense, the more damage a failure can cause the more often you should check them.

Fair Winds
Capt. Wayne Canning, AMS
sailvayu is offline   Reply With Quote
Old 25-12-2009, 15:44   #7
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: 6,324
Yep, gotta agree with all the above.

Check by feel if the old hose is hard, soft, spongy, brittle; by sight if surface cracked, split ends, surface contaminated (say by oil etc); flex it and yank it. It helps if you have some new equivalent hose to compare to.

Then assess the consequences of the particular hose failing when you are not on board or during rough weather.
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 offline   Reply With Quote
Old 26-12-2009, 03:23   #8
Registered User
Laidback's Avatar

Join Date: Jun 2007
Posts: 853
Check all hoses as part of regular scheduled maintenance programme and give them a once over every time you are looking at them. NOT every 10 years! Come on !! nothing is for ever !!!
Laidback is offline   Reply With Quote
Old 26-12-2009, 05:27   #9
Registered User
sailvayu's Avatar

Join Date: Mar 2006
Location: Fort Myers FL
Boat: Irwin 40
Posts: 878
Hmmm I was not suggesting you only CHECK them every 10 years but rather that would be the maximum life span. Sorry if I was misunderstood. Of course it should be at least once a year if not more often to check general condition. I have seen boats built in the 70's with original hoses but that does not mean I would recommend that. Like I say common sense.

Fair Winds
Capt. Wayne Canning, AMS
sailvayu is offline   Reply With Quote
Old 26-12-2009, 16:08   #10
Registered User

Join Date: Feb 2007
Location: Great Neck, N.Y.
Boat: Lancer 30, Little Jumps
Posts: 482
I change hoses and clamps on motor and fuel system as described above, that is when they feel, look or reasonable service time has passed. Also keep the old servicable hoses
on board if ever needed, as I know they are the right size
and bend...they will and have made for short work when needed.

s/v Little Jumps
Lancer 30
hugosalt is offline   Reply With Quote

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
Nigel Caulder on Hoses GordMay Construction, Maintenance & Refit 19 30-06-2015 12:14
Faulty pump or leaky hoses? mestrezat Plumbing Systems and Fixtures 14 30-09-2013 12:30
Scaling w/ Various Intake Hoses thinwater Plumbing Systems and Fixtures 3 22-05-2009 08:11
Replacing black water tank hoses freightdog Plumbing Systems and Fixtures 4 22-08-2008 17:36
Replacing Head Hoses psteele235 Plumbing Systems and Fixtures 7 10-10-2007 15:17

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 17:21.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.