Hi, Dave:

I am thinking about replacing the shut-off valve on my 87 300TDT.

If I attach a hand vacuum pump to the valve directly, it takes two hard pump to shut off the engine. The vacuum hose to the valve has good vacuum once the key is turned off. So I think I have a leak in the shut-off valve.

In your second picture, you said "Turn the ALDA slightly CCW, or turn the nut slightly CW". Does that mean you are looking from the top? So the wrench moves to your right and the channel loclkmoves to the left.

Thanks.

Bo