MOT talk.

[willie.macleod]

its the pipe that runs to the flexi and the bit that runs down the suspension arms we are seeing loads of rust on , and the metal unions on the fronts , the bits that tucked up by the top flexi ,,,

All the hoses are on the service schedule for replacement every 6 years, you are right the ferrules do seem to corrode badly, plenty of folk selling pre bent intermediate pipes now at sensible prices.

 

[Tinbasherdan]

its the pipe that runs to the flexi and the bit that runs down the suspension arms we are seeing loads of rust on , and the metal unions on the fronts , the bits that tucked up by the top flexi ,,,

Yep, all replaced with stainless braid. Not a hard pipe on it

 

[Tinbasherdan]

Have you found the pedal to be a bit soft with such long runs of flexible hose?

No, the ptfe lined braided doesn’t seem to have any negative effect . They feel like normal defender brakes to me !

 

[arther dailey]

is there any reason you can t put heat shrink over the pipe before you do the second end on new pipes ?

 

[Bobupndown]

is there any reason you can t put heat shrink over the pipe before you do the second end on new pipes ?

Would be a good way to prevent corrosion of the fittings.

 

[Guineafowl]

I've always copper greased the threads and covered new unions with Waxoyl. Sometimes gets an MoT mention, sometimes not.

I did both front caliper pipes on the 90 ten years ago, and when it came time to replace the calipers, the unions were still coated and just undid like they were fitted the day before. That's pretty good with the road salt we get up here. The untreated bleed nipples had all but disappeared.

 

[arther dailey]

Would be a good way to prevent corrosion of the fittings.

I was thinking slide it over pipe , refit , then shrink back so tight fit to nut . as its often the last few inches by nut that rots..

 

[MetalMonkey]

is there any reason you can t put heat shrink over the pipe before you do the second end on new pipes ?

I've done this before to repair the plastic coatings they put on some OEM steel lines.
You have to use a heatsthink with an adhesive inside otherwise it won't stop moisture from creeping up inside and rotting the line.
Even then I'm not certain on the longevity of this "fix", but it was that or replace the entire line, so I had literally nothing to lose at that point.

IME the lines typically rot off where they enter the union, and obviously there is nothing much you can do about that - any coating will interfere with the union.
Best option is replace with cupro nickel pipe and brass or stainless unions and then just forget about it.

 

[Jelly_Sheffield]

You have to use a heatsthink with an adhesive inside otherwise it won't stop moisture from creeping up inside and rotting the line

This is commonly used as an "upgrade" by fitters on some large mining sites I've visited.

Even then I'm not certain on the longevity of this "fix", but it was that or replace the entire line, so I had literally nothing to lose at that point.

One of the mines I visited does it to leaf spring packs.

The pack is assembled with liberal amounts of moly grease between each leaf, then the outside is carefully wiped down to degrease the outside surfaces, slipped inside a gigantic piece of self adhesive heatsthink and warmed up to seal it on.

Apparently based on the "Operational Excellence" data it increases the service life of rear leaf springs on off-highway trucks from 2 years to 6 years...

Whether you would see the same dramatic level of improvement in a less harsh environment is unclear.

 

[tom2207]

I've always copper greased the threads and covered new unions with Waxoyl. Sometimes gets an MoT mention, sometimes not.

I did both front caliper pipes on the 90 ten years ago, and when it came time to replace the calipers, the unions were still coated and just undid like they were fitted the day before. That's pretty good with the road salt we get up here. The untreated bleed nipples had all but disappeared.

we wire brush the fittings and give them a spray with waxol then a wipe with a rag and they dry off to a nice dull sheen for mot ,,, or just use acf 50 from a mist spray bottle and it seems to keep the mot boys here happy.

 

[Keithmac]

I’m running goodrich braided hose front to back on mine , no corrosion there!

I built all my brake system on the MK2 Golf in AN-3 stainless braided Teflon as well. Ran the lines in-cabin where possible.

Nice firm pedal, no chance of any corrosion either.

Bought all the kit off Torques_U.K on ebay.

 

[Wallace]

I took my 2003 S211 Mercedes in for the Mot last week, came away with a no advisories pass and a job offer!

Currently looking into becoming a tester.