Vacuum Leak Sources - hub - Ford Powerstroke Diesel Forum
 
LinkBack Thread Tools Display Modes
post #1 of 5 Old 12-11-2011, 05:51 PM Thread Starter
pez
Member
 
Join Date: Nov 2011
Location: Bonny Doon
Posts: 44
Thanks: 1
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
Feedback Score: 0 reviews
Vacuum Leak Sources - hub

Aside from the yellow o-ring and the o-ring on the auto-locker, are there any other seals to check?

My passenger side won't hold vacuum past the end fitting.



Sent from my Autoguide iPhone app
pez is offline  
Sponsored Links
Advertisement
 
post #2 of 5 Old 12-12-2011, 06:19 AM
Compression Ignition Addict
 
Join Date: Dec 2007
Posts: 6,416
Thanks: 7
Thanked 273 Times in 262 Posts
Mentioned: 7 Post(s)
Quoted: 119 Post(s)
Feedback Score: 3 reviews
Yea, sure, the BIG one

The Knuckle Seal all the way in the back of the "Big Hole" next to the U-Joint.

Here's some pictures, forget the Ball Joint stuff, I'd replace the U-Joint if it's old because that seal is pretty expensive and if you need to "go back in" next year for that U-Joint you'll likely destroy it...

Ford Super Duty Ball Joint Replacement Procedure | Superdutypsd.com

&

Ford Super Duty Knuckle Seal Tool - AKA OTC 6695 | Superdutypsd.com

In it they call it an "Axel Seal", and I've never had to use a puller like that so, don't let that intimidate you
NoRalPh is offline  
post #3 of 5 Old 12-12-2011, 08:13 AM Thread Starter
pez
Member
 
Join Date: Nov 2011
Location: Bonny Doon
Posts: 44
Thanks: 1
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
Feedback Score: 0 reviews
Yuck... It is what it is. Thank you for the info. It appears to be pretty straight forward.

I don't like to throw parts at an issue unless necessary. Can I be sure the knuckle seal is bad solely based on the fact it won't hold vacuum?


Sent from my Autoguide iPhone app
pez is offline  
post #4 of 5 Old 12-12-2011, 12:55 PM
Compression Ignition Addict
 
Join Date: Dec 2007
Posts: 6,416
Thanks: 7
Thanked 273 Times in 262 Posts
Mentioned: 7 Post(s)
Quoted: 119 Post(s)
Feedback Score: 3 reviews
I'd hate to say absolutely, you're putting a pump on the nipple at the top of the knuckle and then trying to pump it down some and it just won't pull any vacuum at all? (I don't know, I've never done that, just assuming that's how I would test..)
NoRalPh is offline  
post #5 of 5 Old 12-12-2011, 01:19 PM Thread Starter
pez
Member
 
Join Date: Nov 2011
Location: Bonny Doon
Posts: 44
Thanks: 1
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
Feedback Score: 0 reviews
Quote:
Originally Posted by NoRalPh View Post
you're putting a pump on the nipple at the top of the knuckle and then trying to pump it down some and it just won't pull any vacuum at all?
Yes, exactly. I can get the driverside to lock up with the pump.

I wasnt the one who installed the new hub on the passenger side. I guess it's possible the o-ring could be faulty. I'm gonna check that before I get any further into it. I assumed, new hub = new o-ring. I always forget never to assume.
pez is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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

 
For the best viewing experience please update your browser to Google Chrome