3/16 Hydraulic brake line fitting issues

In preparation for our Exmouth trip next week, I changed all of my bearings and brake pads last weekend and noticed that my brake lines were quit badly corroded. I actually decided to crank up the pressure on the handbrake and surprise surprise, identified a leak/weep inside the drawbar.

I went to Martins 1hr before closing yesterday and picked up a stainless braided hose kit. Unfortunately the fittings/nuts on the kit are too short. The treads on the fittings I removed seem about 3-4mm longer so the hose flair is 3-4mm from seating. The thread is the same although there is a slight difference in the female cone of the nut.

I’m not going to be able to return the hoses as new given some of the “trials” to get it working so do you know of anywhere who could re-crimp the correct fittings? Photo of the old fitting that fits the master cylinder and calipers.

or should I just drop the hoses and start again with copper tubing?

either way, this is now going to be a late night project only days before we leave for Exmouth

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Posts: 70

Date Joined: 05/12/06

Go Flexi brake lines

Sun, 2019-07-14 09:04

Give Darren a call at DTL industries - he works from home in padbury, advertises on Gumtree too - he'll sort you out - specialises in Trailer repairs/maintenance

i changed my tandem trailer over to a flexi line kit from him for about 350 from memory and easy as to install - should be able to just purchase the section you need too 



Posts: 94

Date Joined: 14/05/13

do the flex

Sun, 2019-07-14 11:04

Is it at all the connections or just the master cyliner?

I seem to recall the master have an adaptor that is needed, but if the old flare fitted and sealed i guess thats not the issue but maybe an adaptor would get you out of trouble.


Cutting and reflaring the stainless could be risky, definately get a pro to do it.

Posts: 87

Date Joined: 27/01/10

Long thread not that uncommon

Sun, 2019-07-14 14:55

Long thread not that uncommon on brakes. Enzed will either have one or make one for you, and be ADR approved. Probably not the cheapest but if you have a tight deadline...Might even swage the correct end on your line, but more than likely want to provide the whole hose to be ADR approved.

jng's picture

Posts: 488

Date Joined: 03/08/07

 i had the same issue

Sun, 2019-07-14 15:50


i had the same issue recently, you can get the adapaters from martin trailer parts. 

Posts: 771

Date Joined: 09/10/06

 Yep as jng said you can get

Sun, 2019-07-14 20:55

 Yep as jng said you can get the adapters to suit. 

Darren253's picture

Posts: 447

Date Joined: 23/07/16

Thanks for the responses

Mon, 2019-07-15 11:12

I took the hose to Pirtek to get the one end replaced that we "trailed" the cut a re-flair option. Unfortunately only after cutting the end off did he determine that his crimp fitting wouldn't install in the hose. Hose was now even more rooted 

Went to Martins Trailers Parts and they provided me with the adaptors and copper washers. Told them the story about the hose and he asked to see it... Went and grabbed it from the car and passed it over the counter to be thrusted an new one and told to clear off... I question if he was sure, to which I was told to leave before he changed his mind.

Excellent service that went far beyond what he needed to do! Hope it all goes toogther now!

Posts: 771

Date Joined: 09/10/06

 Sounds like Ken. Top blokes.

Mon, 2019-07-15 16:03

 Sounds like Ken. Top blokes.

Posts: 5822

Date Joined: 17/06/10

Very good service

Tue, 2019-07-16 19:02

It's people like that which will keep customers coming back time and time again.