Tube Seal N044359

The top portion of the Porter-Cable compressor is somewhat difficult to access. There are two screws that keep the upper assembly intact. Once removed the top part slides about 1" and then there are 4 screws that hold the upper pieces (2) together. The compressor head must be removed taking care not to damage the gasket. The tube seal has a seat in which it sets. Push the seal over the tube, insert the seal in its place and put the head back on the compressor.

To make it easier, I removed the clamp that held the rubber hose going into the tank and replaced the clamp with a screw type. It offered a lot of movement that had been restricted.

There are a number of rubber bumpers that protect the components. They are easily knocked off. Take note of where they belong and ensure all are in place before reassembly.

Removed the screws holding the two half''s of the compressor and removing the hose clamps. Then remove the old tub seal and install the new tub seal. Put it all back together. It works just fine and no more air leaks.

I found your YouTube video on how to replace the seal. It is a excellent video and very informative. I followed it and had my compressor working with no air leaks. Here is a copy of the link. I hope it will help some others with the same problem.

https://www.youtube.com/watch?v=ot_urG5olPM

I had to 'make' a long torx screwdriver to access one of the screws holding the top plastic housing halves together. I used a piece of brass bar, bored a hole in one end to receive a torx bit of the right size and then used a vice to squeeze the sides of the bored area to hold the torx bit in place in order to disassemble then reassemble the plastic housing. (I also used plumber's putty to make sure the bit did not fall out.) It would have been good to have known what size and length screw driver to have before beginning the repair. Everything else was straight-forward.

I watched the e-replacement parts video than completed the steps as they instructed piece of cake

Removed the plastic, the cylinder head and reassembled.

Remove the motor and casing and tube from the tank and then remove the tube from the motor Replaced it reinstalled project went real smooth and parts were exactly what I wanted and needed would order again from this company

Disassembled compressor cylinder, replaced tube seal, gaskets and valve plate, reassembled. There was a YouTube video from eReplacementParts available if necessary. Some of the screws in the housing were in deep pockets and required torx driver with long shafts, but otherwise simple and straightforward. The location of the air leak at the tube seal was easy to diagnose once the housing was disassembled, by pressurizing and listening for the leak. Over time, heat will degrade the seal, fairly common problem for this compressor.

Removed compressor from tank.
Removed covers
Slid motor out
Removed cylinder head
Put new seal in a cup of HOT water for a couple minutes (to soften it, makes it way easier).
Slid seal over pipe
Put seal into cylinder head.
Reinstalled head, motor, covers, compressor to tank.

Would suggest ordering head gasket at the same time, I saved mine, but I have a lot of experience with engines and gaskets.

Disassembled, replaced the seal and reassembled. I was an industrial mechanic for 45+ years so I am lucky enough to be mechanically inclined and able to do this type of work.