1
Welcome,
Guest
. Please
login
or
register
.
1 Hour
1 Day
1 Week
1 Month
Forever
Login with username, password and session length
News:
Registration and Posting Agreement
Home
Forum
Store
Help
Search
Gallery
Login
Register
73-87chevytrucks.com
»
73-87 Chevy _ GMC Trucks
»
Engine/Drivetrain
»
TH400 not shifting till 4,000 rpm
« previous
next »
Print
Pages:
1
[
2
]
Go Down
Author
Topic: TH400 not shifting till 4,000 rpm (Read 15287 times)
Dr_Snooz
Junior Member
Posts: 590
"I like to take hammers, and just break stuff"
Re: TH400 not shifting till 4,000 rpm
«
Reply #15 on:
January 19, 2011, 10:38:08 PM »
I'm glad I asked, because I could have searched for a million years and never realized that it goes here:
I'm not sure how you guys are putting these valve bodies back in, but I had really good luck greasing the checkballs slightly like so:
The grease really held well. I tilted and bumped the valve body as I was lifting it and they stayed put through it all.
I had this spare bracket lying around, so I held the front servo piston in like so while I bolted the valve body.
I also took the opportunity to replace all the little case seals (selector shaft, governor, speedo gear, kickdown switch, etc). I got all of them but the tailshaft seal and the front and rear seals. When I drop the driveline some day, I'll get the tailshaft and rear seal.
The good news is that
the truck is running again!!!!
Hooray!!
Thank you all for your help!
«
Last Edit: January 19, 2011, 10:42:09 PM by Dr_Snooz
»
Logged
1989 Chevy Suburban V-2500, 5.7L, TH400
1990 Chevy C-3500 Ext. Cab, 7.4L, 3L80
2009 Chevy Silverado 1500 WT 4WD, 4.8L, 4L60
VileZambonie
Global Moderator
Senior Member
Posts: 19023
Re: TH400 not shifting till 4,000 rpm
«
Reply #16 on:
January 22, 2011, 08:45:19 AM »
FYI
Grease is NOT what you want to use in an automatic transmission. Vaseline/petroleum Jelly or trans gel.
Logged
, ___
/ _ _ _\_
⌠ŻŻŻŻŻ' [☼===☼]
`()_);-;()_)--o--)_)
74 GMC
,
75 K5
,
84 GMC
,
85 K20
,
86 k20
,
79 K10
Jim Rockford
Banned
Frequent Member
Posts: 358
Re: TH400 not shifting till 4,000 rpm
«
Reply #17 on:
January 22, 2011, 02:12:40 PM »
If that is Lubra-plate engine assy lube He would be fine with just that little bit.
Logged
1973 k20 Camper special
1980 k20 custom deluxe
2004 Crown Vic LX sport
VileZambonie
Global Moderator
Senior Member
Posts: 19023
Re: TH400 not shifting till 4,000 rpm
«
Reply #18 on:
January 23, 2011, 10:41:10 AM »
Using white grease is not an acceptable practice in assembly of automatic transmissions. You need a petroleum based low melting point lube like petroleum jelly or transjel.
Logged
, ___
/ _ _ _\_
⌠ŻŻŻŻŻ' [☼===☼]
`()_);-;()_)--o--)_)
74 GMC
,
75 K5
,
84 GMC
,
85 K20
,
86 k20
,
79 K10
Dr_Snooz
Junior Member
Posts: 590
"I like to take hammers, and just break stuff"
Re: TH400 not shifting till 4,000 rpm
«
Reply #19 on:
January 24, 2011, 11:16:42 AM »
Oh. Good to know. Anyway, the truck passed smog today. It's running great.
Thanks again for all the help.
Logged
1989 Chevy Suburban V-2500, 5.7L, TH400
1990 Chevy C-3500 Ext. Cab, 7.4L, 3L80
2009 Chevy Silverado 1500 WT 4WD, 4.8L, 4L60
Print
Pages:
1
[
2
]
Go Up
« previous
next »
73-87chevytrucks.com
»
73-87 Chevy _ GMC Trucks
»
Engine/Drivetrain
»
TH400 not shifting till 4,000 rpm