Packard Forum Index » Post-War (1946-54)

yes sir, i was also thinking about hooking the pressure gauge to the direct drive port... If it never goes high, then it has to be the transmission, but if goes to high pressure, and nothing happens, it must be the clutch..... Am i thinking right???

Quote:

Yes, your original idea of 3/20, "My plan is to hook a pressure gauge to the DD port behind the bell housing and see if it's getting pressure.", was correct.

The service manual lists the tests and pressures starting on page 29.

You should also test the pump pressure and the governor pressure. The governor pressure controls the direct drive shift valve.
While you are testing pressures, you should run as many of the tests as you can (the internal connection tests are a problem to run unless you have the test pan). This will give you an idea of the overall health of the transmission.

Checking the pressure would certainly narrow down your search, and I think you're thinking about it correctly. As 56Clippers mentioned, test everything you can, you may have 1 issue, or possibly a combination of issues. It's a bit harder to diagnose these types of issues when you don't know what happened leading up to them. I could be wear, if it was parked in this condition, or it could be related to it sitting for 50 years.

Nothing since by previous comment is the "wrong" thing to do, I only wish to suggest that my previous comment is the easiest informative next step.

If you have a gauge you can hook up, I would do that after the linkage adjustment, if said adjustment still does not make it engage.