Need instructions for Griffith barrier hose

[captainlewis]

I need the instructions to install barrier hose set for 1987 Carreras. My son and I want to know the job and study them before we order hose set. Griffith advised that the instructions only come with the product and will not send me the instruction. I would appreciate it. Also will a uv light detect dye thats in the a/c system if it is leaking through the pores of the hoses hose itself. I was told that r-12 does not leak through the hose as much as r-134. I will send you my email if you would be so kind as to send me a copy of the instructions if you have them. Thanks

[FrankM_]

From my experience , my UV light would NOT show the slow leaking of the R134a gas trough my old hoses. It does clearly show holes or punctures in the condensors and leaks around the connections.
Although sometimes it is difficult to spot with the front condensor because of the stone guard.
However, the UV light also 'lights up' the old underbody coating/cosmoline so it was very hard to spot. (I only had leak that lost about half the charge over 4 months)

As for the new hoses : removing the current ones is some work (I do not have a bridge, spent some 6 hrs removing the old ones) but nothing too difficult. Putting in the new ones, no problem, it is just following the same routing and putting the same clamps back on.
I lubricated the new o-rings with some PAG46 oil before putting them on.
Most of the routing is along the underbelly of the car and thus very accessible. I only had to take the left side wheels off to do the clamps in the wheel wells. By using some electrical wire connected to the old hose when pulling it out, I had a 'pull through' wire for the new hose around the invisible area's such as the routing behind the headlight or the routing up into the engine bay.

I did line up all the connectors manually and screwed them on manually (not with a wrench) as you can easily cross thread this soft metal. Only used a wrench to put in the last quarter or half turn (estimated 10-12 Nm). For the front condensor : do not attempt to screw on the hoses with the condensor in place, remove the screws so it can move freely and align the connections perfectly, then tighten and only then put the condensor back into place (bending/flexing the hoses).

Put in the new receiver-drier last (as it normally is vacuum packed) and once this is connected, pull a vacuum on the system immediately -> yes, you will need a vacuum pump and a simple R134a manifold to do this. It is best not to leave the system open for days with the new drier in place. Alternatively (no pump/manifold) you can only put the drier in just before you go to a R134a refill station but leaving the system open for too long is not OK for the oil inside (PAG oil attracts moisture).

Refilled with about 910 grams of R134a at a professional refill station.

So for about 2 half days of work + another half day rebuilding the evaporator box (new evaporator, new motor, PWM controller) I now have a system that blows cold within 2 minutes, I can really regulate the airflow and the hoses can contain R134a.

Only 2 original components are the compressor and the rear condensor.

Frank

[Tommy Z]

Frank just told you everything you need to know. If Griff doesn't want to share the proprietary instructions for his system then you should respect that. The hose install is the easiest part of the system. Just follow the same path as original. Some of the existing clamps are to be re-used but Griff provides new ones for some places but they are essentially the same parts. i lost one and found a suitable replacement at ACE hardware. Frank's advice about attaching a wire or thin rope to the old hoses as you remove them from the engine bay or from the front condenser is spot on. I never would have been able to fish some of those through without it. It's not difficult and not even terribly time consuming but oh so satisfying.

[GH85Carrera]

Originally Posted by Tommy Z

Frank just told you everything you need to know. If Griff doesn't want to share the proprietary instructions for his system then you should respect that. The hose install is the easiest part of the system. Just follow the same path as original. Some of the existing clamps are to be re-used but Griff provides new ones for some places but they are essentially the same parts. i lost one and found a suitable replacement at ACE hardware. Frank's advice about attaching a wire or thin rope to the old hoses as you remove them from the engine bay or from the front condenser is spot on. I never would have been able to fish some of those through without it. It's not difficult and not even terribly time consuming but oh so satisfying.

This. The hose replacement is the easiest, but dirtiest part of the job. Instructions are not that complex. And as already suggested be sure to have some strong pulling line for getting the lines through the tight areas in the engine compartment. It did mine in 2007 so many details are lost to time in my memory. It was not difficult at all, and the entire install is pretty easy for anyone that has worked on cars for very long. The only complex part is the vacuum and charging. That can be hired out. I love to learn new things so I invested in the tools to do it all myself.

[walt]

I've done this twice. Not difficult at all, can be done easily in a weekend. As I noted earlier fresh clamps, screws and sealing washers for the under body is nice to have. Good advice above on pulling the hoses thru tight spots. Oh, and a new drier too is a must.