Packard Forum Index » Project Blogs

Ok, I found the numbers in 49T-31.

- Direct drive should engage between 15-22 MPH at very light throttle.
- Disengagement should happen at 10-13 MPH when coasting.
- Direct drive engages at about 30-45 MPH at half throttle.
- Kickdown should be tested at 35-40 MPH.

I don't believe these numbers would have changed by 1954. I would test the car accordingly.

P.S. on p. 27 of the Ultramatic manual (51-54 service manual) there are instructions for setting the throttle valve. Perhaps you can try that, or just use trial and error.

See also 50T-33. I can get you a drawing of PU-354 if you want to follow the bulletin.

packardinfo.com/xoops/html/downloads/STB/50T-33.pdf

You can make a cheap quick and dirty gauge that will work on cast iron heads in place of the PU 364 tool by using a length of steel or aluminum flat stock and a machine screw or length of all thread from the hardware store. If you have a decent small ruler you can also do the same adjustment using only a piece of flat stock. Just be sure the measurement is taken from the bottom of the stock which will be resting on the head.

The revised tool dimensions are in the comprehensive adjustment article on page 10 of the Feb 53 SC Vol 27 #2. Place the gauge on the head as shown in the article photo, Instead of having a hole in the tool to stick the end of the throttle rod into you place the end of the length of screw or all thread next to the accelerator linkage and adjust the linkage as the article says so the end of the screw is exactly at the center of the rod. 54 Aluminum heads use a different measurement so without changing the length of the screw this specific gauge would not work on cars having those heads..

Attach file:

---

  PU 364 substitute.jpg (122.33 KB)

Thanks Howard but it's PU 354 in question, not 364.

Don't see a reference to PU 354 offhand. It it a throttle pressure adjust tool and is there an illustration or photo.

HPH - the gauge specified in 50T-33 is PU 364

Oh, sorry guys. My printout quality is pretty bad! I linked to the page on here without re-reading it. For what it's worth, I can get you a PU364 drawing too if it would help, but I trust that Howard is correct.

I was wondering, because PU354 is clearly a press tool

Just lengthen the pull rod to the carb a bit until you like the way the trans upshifts. There is a singular lack of rocket science involved. Besides, that is likely all that got changed when the carb was taken off.

Quote:

Sounds good. I figured it was probably simpler than the manual made it seem.

for including your '52 200 Deluxe Touring Sedan in PackardInfo's Packard Vehicle Registry.