Hello and welcome to Packard Motor Car Information! If you're new here, please register for a free account.  
Login
Username:

Password:

Remember me



Lost Password?

Register now!
FAQ's
Main Menu
Recent Forum Topics
Who is Online
71 user(s) are online (55 user(s) are browsing Forums)

Members: 2
Guests: 69

humanpotatohybrid, Ernie Vitucci, more...
Helping out...
PackardInfo is a free resource for Packard Owners that is completely supported by user donations. If you can help out, that would be great!

Donate via PayPal
Video Content
Visit PackardInfo.com YouTube Playlist

Donate via PayPal

Forum Index


Board index » All Posts (kunzea)




Re: 1951 Ultramatic Delayed Engagement When Warm
#1
Just can't stay away
Just can't stay away

kunzea
Pat at Pat's Transmission did the rebuilds. I gave him your name and number yesterday. I drove it yesterday for the first time in 14 months.

Posted on: 6/23 15:54
 Top 


1951 Ultramatic Delayed Engagement When Warm
#2
Just can't stay away
Just can't stay away

kunzea
My transmission and rear end have been rebuilt. Prior to driving (cool), the transmission will immediately engage when shifted into drive, low and reverse. After driving (warm) there is a delay in engagement until the RPM is brought up slightly. The trans has a full synthetic ATF in it.

What ATF should be used? Any other suggestions?

Posted on: 6/22 21:33
 Top 


Re: 1951 Ultramatic Throttle Valve Relay Rod
#3
Just can't stay away
Just can't stay away

kunzea
It looks like 28 29/32". Can you confirm? What is the source document?

Posted on: 6/6 10:15
 Top 


1951 Ultramatic Throttle Valve Relay Rod
#4
Just can't stay away
Just can't stay away

kunzea
The throttle valve relay rod is rather stout and I doubt it would get bent except in extreme cases. What should be the length between the centers of the linkage holes at the opposite ends of the rod? The rod that came with my spare 1952 Ultramatic transmission measures approximately 30 5/8". Is the 1951 rod the same length? See image below.

Attach file:



jpg  IMG_20220606_101900037.jpg (1,434.50 KB)
85709_629e11edecd69.jpg 4000X1800 px

Posted on: 6/6 9:42
 Top 


1951 Ultramatic Throttle Valve Lever Adjustment
#5
Just can't stay away
Just can't stay away

kunzea
Reference "Service Manual Section VII - Ultramatic Drive". "Ultramatic Drive Adjustments - Throttle Valve Lever" (page 27). The adjustment is described there. From that description the shaft must be smooth (not splined). Is that correct? I have a 2498.

Posted on: 6/5 8:39
 Top 


Re: Ultramatic Pump Selector Valve Operation
#6
Just can't stay away
Just can't stay away

kunzea
I've read that multiple times. I read it again. I believe the valve is shown in its initial position which allows oil to the front pump relief valve. I would have thought that the first exhaust port and the inner spring would have regulated the pressure to the converter inlet valve. I guess the rear pump pressure is so much greater than this regulated front pump pressure such as to overwhelm the first exhaust port and continue to move the valve inward. It makes sense that the flow rate of a liquid through an aperture would have a point of non-linearity verses pressure. I believe the front pump is regulated at 85 and the rear at 93, pretty close. Also, the purpose of the first annular groove is not explained.

Posted on: 5/27 13:11
 Top 


Ultramatic Pump Selector Valve Operation
#7
Just can't stay away
Just can't stay away

kunzea
I'm wondering how this valve operates. What I don't understand is how the valve operates with only one oil inlet. Does the rear pump simply OVERWHELM the inner spring and the first exhaust port thus moving the valve to engage the outer spring? At this position fluid is routed to the front pump relief valve which idles the front pump. Pressure greater than 93 PSIG exits the front pump exhaust port achieving regulation at 93. What is the purpose of the first annular groove?

Attach file:



png  Ultramatic Pump Selector Valve.png (343.11 KB)
85709_6291091020a6b.png 1554X588 px

Posted on: 5/27 11:30
 Top 


Re: gas milage
#8
Just can't stay away
Just can't stay away

kunzea
You might want to ask to help determine if you have your car running right.

Posted on: 3/12 21:51
 Top 


In Search Of 51/52 Ultramatic Differential Carrier Assembly (Pumpkin)
#9
Just can't stay away
Just can't stay away

kunzea
I'm searching for a rebuilt, usable as-is, rebuildable or NOS differential carrier assembly (pumpkin).

Please let me know if you have one or where I might get one.

3.54 to 1
436831

https://packardinfo.com/xoops/html/mod ... ue=436831&ButtonLookup=Go

Posted on: 2/26 8:07
 Top 


Re: ISO Rebuilt 1951/1952 Differential Carrier Assembly
#10
Just can't stay away
Just can't stay away

kunzea
1951 200 Ultramatic 3.54 to 1. I replaced the axle bearings and seals. Rear end is noisy.

It has been at the transmission shop for 10 months. The transmission has been rebuilt but the differential carrier assembly hasn't been touched. To try to make some progress I'd prefer to buy a rebuilt differential carrier assembly and just put it in.

I may even get one and try to rebuild it myself.

Posted on: 2/25 20:15
 Top 



TopTop
(1) 2 3 4 ... 7 »



Search
Recent Photos
Photo of the Day
1935 - Loading dock of the Packard Plant.
Recent Registry
Website Comments or Questions?? Click Here Copyright 2006-2021, PackardInfo.com All Rights Reserved