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leak in front to rear pipe

deanno on Thu July 09, 2009 12:34 AM User is offline

Year: 92
Make: mitsibushi
Model: pajero/montero
Engine Size: 2.5td
Refrigerant Type: r12
Country of Origin: United Kingdom

I have a leak( pin hole) in one of the front to rear pipes (-8mm steel?) just above the rear axle. Been quoted £230 for new pipe from dealer and half as much to be repaired. Is there anyway i can repair this myself, with what and how would i do this please.

Edited: Thu July 09, 2009 at 12:42 AM by deanno

HECAT on Thu July 09, 2009 6:26 AM User is offline

Sometimes damaged rear air lines can be welded or brazed to repair the damage. They can be spliced with something like this. I do not know what is available in the UK, but you can search the internet for Airsept, Dorman, or Locring (see line repair or line splice products) to see some of the options we have available in the US. The other charges are probably covering whatever will be necessary to complete the repair (vacuum and recharge) after the line is repaired or replaced.

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FLUSHING TECHNICAL PAPER vs2.pdf 

Cussboy on Thu July 09, 2009 9:55 AM User is offline

With gas chromatography, with gases like hydrogen and helium (tiniest molecules) one cannot have leaks; for those we only use Swagelok connectors, find a dealer in UK. You match the metal type (brass, steel, aluminum) to the tube metal type and they are available in standard or metric. You want a "union" tube fitting, which comes with the metal ferrules and nuts, all metal. You'd use an expensive tubing cutter to cut the existing tubing, and slide this union on and tighten it. You wouldn't have to be that exact in how much to cut either, there's some play in how far the tubing can be past the cone-shapped ferrule. In apprearance, somewhat similar to the link posted above, but without the filter. So either way, whatever you can obtain.

In your situation I would definite try something like this, as brazing/welding might be tough in that location and because of oil in the line.

HECAT on Thu July 09, 2009 11:25 AM User is offline

Swagelock; I knew there was another common brand used that I was missing.

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HECAT: www.hecatinc.com You support the Forum when you consider www.ackits.com for your a/c parts.

FLUSHING TECHNICAL PAPER vs2.pdf 

deanno on Thu July 09, 2009 12:23 PM User is offline

Thanks for the replies. Had a quick look on ebay and found these-item 380137476742. Would they do the job

HECAT on Thu July 09, 2009 1:35 PM User is offline

NO. That is a low pressure pneumatic tubing union. You are going to need a fitting that can handle much more pressure and vibration than the one you reference.

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HECAT: www.hecatinc.com You support the Forum when you consider www.ackits.com for your a/c parts.

FLUSHING TECHNICAL PAPER vs2.pdf 

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