TH400 not holding in park - Off-Road Forums & Discussion Groups
Go Back   Off-Road Forums & Discussion Groups > Jeep > Jeepster-American Jeepster Club

Jeepster-American Jeepster Club Please also visit our club web site for more information at http://www.americanjeepsterclub.org/



Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 08-13-2002, 09:59 AM
Journeyman
 
Join Date: May 2002
Location: Ca. Bay Area
Posts: 148
Thanks: 0
Thanked 0 Times in 0 Posts
Phytoplankton is an unknown quantity at this point
Default TH400 not holding in park

Still working out some of the bugs on my jeepster, one problem is that the tranny doesn't hold in park. It shifts fine. I haven't gotten underneath and checked the linkage yet, but barring that, what kind of a job am I looking at? Also if it is an internal problem what's it cost to remove/rebuild/replace a TH400? (gonna break it to the wife slowly)
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old 08-13-2002, 02:31 PM
thomjpster's Avatar
Veteran
 
Join Date: Jun 2001
Location: Greeley CO
Posts: 886
Thanks: 0
Thanked 0 Times in 0 Posts
thomjpster is an unknown quantity at this point
Default Re: TH400 not holding in park

If memory serves me correctly, the park "paw" is in the back of the tranny under everything, but not inside the rear housing/adapter. I think you can see some of it from the bottom when the pan is removed.
Double check the linkage. It should move fully to park position with some extra force.
When parked, there is a lever that moves over a grabs a cog type gear on the output shaft, thus locking the shaft to the case.
it is moved by a rod connected to the shifting shaft. This rod is spring loaded to the lock lever. That way if you hit park while still moving, you hear grinding before the lever grabs a tooth.
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #3  
Old 08-13-2002, 08:55 PM
kingcarnut's Avatar
Enthusiast
 
Join Date: Feb 2002
Location: Latrobe, Pa
Posts: 375
Thanks: 0
Thanked 0 Times in 0 Posts
kingcarnut is an unknown quantity at this point
Default Re: TH400 not holding in park

Has the tranny ben worked on lately? When I had my th400 rebuilt, the shop put the park linkage plate in backwards and it wouldn't stay in park on hills. You need to drain the trans, remove pan and filter. Find the metal cover over the parking gear plunger, it has two bolts through it and can be bolted in either way, common mistake to put it in backward.
Look for a th400 rebuild book at B&N or Borders and look up parking linkage and it discusses this in detail.
Just my .02
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #4  
Old 08-14-2002, 09:19 AM
Journeyman
 
Join Date: May 2002
Location: Ca. Bay Area
Posts: 148
Thanks: 0
Thanked 0 Times in 0 Posts
Phytoplankton is an unknown quantity at this point
Default Re: TH400 not holding in park

Hasn't been worked on to my knowledge, I just bought it back in June, and it's basically been sitting my garage while I rebuild the doors and get a hard top ready to put on it. The tranny didn't hold in park when I bought it. I contacted a website for trannies at http://www.quality-trans.com They have a question/answer guy. Chances are it's just a loose linkage, I have to disconnect the linkage and see if I can manually put it in park. If that doesn't work he said the parking pawl can be replaced without dropping the tranny, just remove the pan, probably the pawl return spring. WOW good news for once!
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Sponsored Links
Advertisement
 
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -5. The time now is 06:09 AM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.2.0
Copyright 1994-2009, VerticalScope Inc. // Off Road forums & discussion groups sitemap
side by side | atv | dirtbike | snowmobile | sandsport | competition | land use | Jeep | Toyota | Ford | GM