Help! A/C hi side service port leaking

[wood8835th]

For 88. Testing vacuum prior to R134 conversion.

The valve is audibly leaking in the line that goes from condensor to evaporator. It appears to be a Schraeder valve but seems to be bigger than the one on the accumulator (drier).

Is it a Schraeder valve? It doesn't engage with the same removal tool that would remove the one in the drier.

Can it be replaced or do I have to replace the whole line? Here's a couple of pics. Schraeder on drier seems to be different valve than hi press line,

 

[gmjunkie]

For 88. Testing vacuum prior to R134 conversion.

The valve is audibly leaking in the line that goes from condensor to evaporator. It appears to be a Schraeder valve but seems to be bigger than the one on the accumulator (drier).

Is it a Schraeder valve? It doesn't engage with the same removal tool that would remove the one in the drier.

Can it be replaced or do I have to replace the whole line? Here's a couple of pics. Schraeder on drier seems to be different valve than hi press line,

View attachment 8909View attachment 8910

Yes it can be removed and replaced with a 134a service port.
R12 and R134a use the same High Side line,just a different service port.
R134a service port shown below.....................

 

[boomdriver]

Removing the valve insert requires a automotive type valve tool. Its deeper and longer to reach inside further. Some standard schrader valve tools may not reach in far enough on auto a/c lines to get a bite on the old valve insert.

Also, always KNOW what line you are working on. I have seen many replacement parts (lines, dryers etc) come with multiple service ports. My replacement dryer/accumalator has 3 ports for use with just about ANY auto a/c system. Very generic. Some have both, hi & low. Why...I cannot tell you. Know the line and choose the appropiate service port to work with. The 134-a conversion ports simply screw on over the existing r-12 threaded ports stem. Some are tall enough to have their own schrader valve that does the work...while others are just a new collar that screws down onto the old fitting and valve. They are NOT interchangable and there ARE different types of threads in the generic conversion kit. Pick the correct fitting for your make & model. The outside shape/size will always be the same but the inside thread pitch/size may be different from the different mfg.

Also, when shopping for the conversion kit/fittings, look for steel or good quality metal...there are some very cheesey aluminum fittings that will strip just by swcrewing them on finger tight. The outside is damaged by the use of a tool to tighten and then you cannot get it off without destroying the r-12 fitting so you can never use it again. I have seen conversion fittings blow OFF when a gauge was attached and the system was charged with pressure. Buy good quality conversion fittings and make damn sure they are seated and not cross threaded.