new style I.P. vacuum valve

Hello all,

I just bought a new proportioning valve for the transmission vacuum line. I noticed that the adjustment mechanism is different. Instead of two nuts that you could adjust with 7 and 8 mm open-end wrenches, there's this strange-looking crimped cover wrapped around the shaft. I would take a picture, but my digital camera isn't working.

My question is: can you adjust these new-style valves? I am hoping they come properly calibrated from the factory, because I don't see how to adjust this thing without breaking it.

Thanks in advance

[Tirebiter]

Sounds like an "anti tamper" cap. They can usually be removed, carefully, and discarded like the cap on the ALDA.

Borrow a camera.