Re: [Amc-list] tranmission adjustment help

[Frank Swygert <farna@xxxxxxx>]

I took a look at the diagnoses guide in the 62 TSM (note: when you need help with something specific include the year and model in the msg or subject line every time so we don't have to dig back through the archives!). All the no upshift solutions refer to a stuck governor or stuck shift valve. 

The governor can be checked without removing the pan. On the right side of the output shaft housing is a cover. Remove that cover then rotate one rear wheel (you'll need to jack one off the ground) until you see the top of the governor. The cover is angled down for a reason! There are two screws with lock washers on the governor. Unscrew them. The TSM doesn't show it, but says that the governor weight and spring are held in by a retainer after the screws are removed. Pull this out and clean it all up, also make sure the oil passages in the governor body are clear (small piece of wire...). The weight should move freely in the body. 

The valve body must come out to get to the shift valves. The control valve assembly can be removed without removing the pressure regulator valve assembly (the smaller assembly with two external springs held to it by a sheet metal retainer). Nothing will fall out of the assembly as it's being removed, but there are three "layers" to the assembly. When you separate the layers springs and check valves (balls) CAN fall out. It's not hard to do, but I wouldn't do it without a TSM or other trans service manual that shows everything. If you don't have one I'd advise you to get one, but if necessary I can copy the 5-6 pages on the control valve and get them to you. 

I'd disassemble and clean the entire valve body AND the pressure regulator assembly while the pan is off. Probably something gummed up in there. If you have compressed air cleaning the passages will be easy, but spray carb cleaner (a couple cans!) is a good substitute. Everything must be as clean as possible when working on the valve body, even small pieces of trash can cause problems! Sweep up then lay an old sheet or new piece of plastic out on the work bench. That's worked for me! 

-----------------
Date: Wed, 6 Aug 2008 10:34:56 -0800
From: hydeparker@xxxxxxxxx

Thanks, Mark.  I'll do your checks.  As a note, the car is in first gear, but not shifting into 2 (and thus not into 3). There is a metal vacuum line on this car, not rubber, but I'll disconnect it at the modulator and check for vacuum. Also, I do have a new modulator to put on.  My pan gasket will be in tomorrow, so I can clean the filter this weekend.  

-- 
Frank Swygert
Publisher, "American Motors Cars" 
Magazine (AMC)
For all AMC enthusiasts
http://farna.home.att.net/AMC.html
(free download available!)

_______________________________________________
Amc-list mailing list
Amc-list@xxxxxxxxxxxx
http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list