On my 86, 3 lines of the expansion valve will not budge, I used a 19 MM on the outside line, it broke free. I am using a 22 MM crows foot on the large outside line but no dice. I am afraid that I will twist something never mind the rear lines going to the evaporator due to the lack of space I am assuming you need an $800.00 custom Porsche tool to do this. Any one done this successfully and if so any hints !

 

Tampa,

You're like a machine!

I hope you get this figured out and on the road soon. I keep following your progress and I'm amazed at your determination. You're gonna have some sweet bonding time on the highway when this is all done .

Sorry, no help on this particular issue, good luck.

 

try spraying some PB on the hose connections, get a hair drier set on hot and heat the connections up they should come loose, if you strip the screw holding the hose plate to the expansion valve then you will have to drill off the head or try tapping the head with a sharpe chisle

 

'86 is when the valves changed from four threaded fittings to the manifold type valve with a center bolt. I'm assuming you have the threaded fitting type. If you do, the two fittings on the evaporator are 19mm, and the two fittings on the other side (engine side) of the valve are 17mm and 24mm. A crow's foot will not give you enough torque and increase the opportunity to bugger the fittings. Assuming you don't have a set, buy some flare fitting wrenches (can get 'em almost anywhere including Sears). They provide more grip, but most importantly, minimize the chance of rounding the nuts. You might have to use channel locks or an adjustable wrench to hold the valve so it doesn't twist while you apply wrench pressure. As a note, the largest fitting (24mm suction line) should be 30 ft lb max tightening torque and the 17mm pressure line is only 14 ft lbs. Didn't see a spec for the evaporator fittings, but we can assume them to be about 20 ft. lbs. Personally, I couldn't get a crow's foot on them to actually measure torque, but it still helps to at least have some reference. G'luck.

 

Tampa, I described what needs to be done on another thread where you mentioned this. Get the heater hoses and wiper motor out of the way and it should be smooth sailing(compared to what you're going through now).

 

Stan, he has the old style -- nothing to drill out.

 

Thanks Dave. Stan