Notices
Pre-Power Stroke Diesel (7.3L IDI & 6.9L) Diesel Topics Only

Tranny leaking

Thread Tools
 
Search this Thread
 
Old Nov 15, 2010 | 07:48 PM
  #1  
ah1988's Avatar
ah1988
Thread Starter
|
Senior User
Joined: Sep 2010
Posts: 495
Likes: 0
From: Florida
Tranny leaking

I need some help i replaced the fluid and filter in my transmission and it is leaking fluid,the heads of the bolts for the pan are wet ,not all of them just some of them like in a staggerd pattern and there is dripping where the end of the tranny connects to the driveshaft on the tranny caseing .
when i installed the gasket i was going to use rtv silicone on the gasket but the directions told me not to is this my mistake? And 1,2,3nd gear shifts hard when speeding up and slowing down. can anyone tell me what to do to fix this ?
 
Reply
Old Nov 15, 2010 | 08:12 PM
  #2  
FORDF250HDXLT's Avatar
FORDF250HDXLT
Fleet Owner
15 Year Member
Community Builder
Liked
Community Favorite
Joined: Jul 2006
Posts: 20,345
Likes: 802
From: Mi'kma'ki
very,very common.
you overtightened the pan bolts.
they only require a few foot lbs.like 12 for the c6.
you need to drain it and install a new gasket now.


no,don't use any rtv.there's no need.just use a torque wrench this time.it's going to feel like your hardly tightening the bolts.

did the trans just start shifting hard,and a filter w/flush being the first attempt at fixing the problem?
 
Reply
Old Nov 16, 2010 | 03:30 PM
  #3  
ah1988's Avatar
ah1988
Thread Starter
|
Senior User
Joined: Sep 2010
Posts: 495
Likes: 0
From: Florida
thanks ,the tranny just started to shift hard just about 200 miles after fluid and filter change and sitting for about two months, didnt use a tourqe wrench just did it until it felt tight .
 
Reply
Old Nov 16, 2010 | 03:46 PM
  #4  
FORDF250HDXLT's Avatar
FORDF250HDXLT
Fleet Owner
15 Year Member
Community Builder
Liked
Community Favorite
Joined: Jul 2006
Posts: 20,345
Likes: 802
From: Mi'kma'ki
tightening the pan bolts will not feel right.
they require so little force to tighten,you'll sware the thing will leak like a fountain. but it wont.

when you filled the fluid.
how did you check the level?
with the truck running/slowly shift through the gears,and back into park or neutral,and with the truck still running,check it?
if you didn't do it this way,you may have it over or under filled.

what did you use for fluid?

also since you overtightened the pan bolts,then left the truck sitting.my guess would be you lost some fluid,and it's now low,causing the late,hard shifts.
 
Reply
Old Nov 16, 2010 | 05:01 PM
  #5  
ah1988's Avatar
ah1988
Thread Starter
|
Senior User
Joined: Sep 2010
Posts: 495
Likes: 0
From: Florida
i checked it after driving it it barely had any ,and for fluid i use the walmart brand dextron II ,did i ruin my gears driving it so low on tranny fluid ? i only probably drove 30miles with it hard shifting? I ssooo hope not
 
Reply
Old Nov 16, 2010 | 05:07 PM
  #6  
ah1988's Avatar
ah1988
Thread Starter
|
Senior User
Joined: Sep 2010
Posts: 495
Likes: 0
From: Florida
it barely had any fluid in it it was below the firdt hole on dipstick ,i use dextron II walmart brand ,did i ruin my tranny driving it so low on fluid only went about 30miles driving it with it hard shifting.
 
Reply
Old Nov 16, 2010 | 05:23 PM
  #7  
FORDF250HDXLT's Avatar
FORDF250HDXLT
Fleet Owner
15 Year Member
Community Builder
Liked
Community Favorite
Joined: Jul 2006
Posts: 20,345
Likes: 802
From: Mi'kma'ki
the c6 is a strong trans.
first thing you want to do of course,is replace the pan gasket.
making sure you flatten out the pan surface.if you overtightened them so hard,that you made the pan dimple in all the bolt holes,you need to tap it all flat/even first.
and then of course bring the fluid up to full.
drive her,and she probably won't know you ever mistreated her.
 
Reply
Old Nov 16, 2010 | 05:58 PM
  #8  
ah1988's Avatar
ah1988
Thread Starter
|
Senior User
Joined: Sep 2010
Posts: 495
Likes: 0
From: Florida
Ok,will do probably this weekend .
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

Top 10 Ford Truck Tragedies

 Joe Kucinski
story-1

AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

 Brett Foote
story-2

Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

 Michael S. Palmer
story-3

Ford's 2001 Explorer Sportsman Concept Looks For a New Home

 Verdad Gallardo
story-4

10 Best Ford Truck Engines We Miss the Most!

 Joe Kucinski
story-5

2026 Shelby F-150 Off-Road: Better Than a Raptor R?

 Brett Foote
story-6

2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

 Michael S. Palmer
story-7

10 Most Surprising 2026 Ford Truck Features!

 Joe Kucinski
story-8

Top 10 Ford Trucks Coming to Mecum Indy 2026

 Brett Foote
story-9

5 Best / 5 Worst Ford Truck Wheels of All Time

 Joe Kucinski
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
craigibc
Clutch, Transmission, Differential, Axle & Transfer Case
12
Aug 3, 2010 01:34 PM
andym
Clutch, Transmission, Differential, Axle & Transfer Case
4
Jun 4, 2009 09:02 AM
OffRoadBandit
Clutch, Transmission, Differential, Axle & Transfer Case
7
Jan 3, 2007 02:42 PM
elwood
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
3
Aug 13, 2003 07:57 PM




All times are GMT -5. The time now is 09:11 AM.

story-0
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-1
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-2
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-3
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-4
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-5
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-6
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE
story-7
10 Most Surprising 2026 Ford Truck Features!

Slideshow: 10 most surprising Ford truck options/features in 2026.

By Joe Kucinski | 2026-05-05 11:17:22


VIEW MORE
story-8
Top 10 Ford Trucks Coming to Mecum Indy 2026

Slideshow: Here are the top 10 Fords coming to Mecum Indy 2026.

By Brett Foote | 2026-05-04 13:49:49


VIEW MORE
story-9
5 Best / 5 Worst Ford Truck Wheels of All Time

Slideshow: The 5 best and 5 worst Ford truck wheels of all time

By Joe Kucinski | 2026-04-29 16:49:01


VIEW MORE