Knuckle seal questions. - Ford Powerstroke Diesel Forum
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post #1 of 12 Old 06-11-2013, 09:54 PM Thread Starter
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Knuckle seal questions.

Hello all. I'm in the process of fixing an axle leak on my 05. I've gotten my unit bearing out and am now trying to get the axle shaft out of the knuckle. There is that big seal in the knuckle and I don't know which way to try and knock it out. What's the best way to do this?

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post #2 of 12 Old 06-11-2013, 10:24 PM
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drive it into the knuckle from the outside ( between the knuckle and axle tube drive it into where the unit bearing was )

air chisel works nice trying to reuse them not so nice LOL

takes a special tool to install

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post #3 of 12 Old 06-11-2013, 10:38 PM Thread Starter
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So I need to hammer it from the axle side of the knuckle outward?

05 EX Cab Short
8 inch Fabtech
38 inch SSRs on 17x10 Centerlines(powdercoated)
SCT Innovative tunes
Banks CAI
Offroad MBRP Stainless 4.5 " and up pipe.
Auto Meter EGT, Fuel pressure, Trans Temp, Oil temp, water temp gauges.
Blue spring , bored 3 hole banjos.
ARP Studs
OEM Ford gaskets.
EGR Delete, cooler delete.
Bulletproof stand pipes
AMP Power Steps
Kicker Audio
Yukon 4.56 gears
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post #4 of 12 Old 06-12-2013, 05:46 AM
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yea..they are a PITA. I use a brass punch and a hammer and just go to town on it. New ones cost like $35 or so..and you'll need a special tool to reinstall it, or build your own special tool. Has to go in evenly. Or if by some chance you take the knuckle off and decide to do ball joints, some of the Techs at the ford dealers are nice. They installed my knuckle seal and 2 new ball joints for $20. That was before I bought the tool myself

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post #5 of 12 Old 06-12-2013, 04:57 PM Thread Starter
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Quote:
Originally Posted by dxusmc View Post
yea..they are a PITA. I use a brass punch and a hammer and just go to town on it. New ones cost like $35 or so..and you'll need a special tool to reinstall it, or build your own special tool. Has to go in evenly. Or if by some chance you take the knuckle off and decide to do ball joints, some of the Techs at the ford dealers are nice. They installed my knuckle seal and 2 new ball joints for $20. That was before I bought the tool myself
Sweet, I'm gonna go give er hell. Thanks for the help guys.

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38 inch SSRs on 17x10 Centerlines(powdercoated)
SCT Innovative tunes
Banks CAI
Offroad MBRP Stainless 4.5 " and up pipe.
Auto Meter EGT, Fuel pressure, Trans Temp, Oil temp, water temp gauges.
Blue spring , bored 3 hole banjos.
ARP Studs
OEM Ford gaskets.
EGR Delete, cooler delete.
Bulletproof stand pipes
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post #6 of 12 Old 06-15-2013, 04:10 PM Thread Starter
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I still cannot get that seal out. If I try to hit the back of the seal with a punch I will hit the metal stub shaft. It's like a big flange. ANy ideas on how to get this thing out?

05 EX Cab Short
8 inch Fabtech
38 inch SSRs on 17x10 Centerlines(powdercoated)
SCT Innovative tunes
Banks CAI
Offroad MBRP Stainless 4.5 " and up pipe.
Auto Meter EGT, Fuel pressure, Trans Temp, Oil temp, water temp gauges.
Blue spring , bored 3 hole banjos.
ARP Studs
OEM Ford gaskets.
EGR Delete, cooler delete.
Bulletproof stand pipes
AMP Power Steps
Kicker Audio
Yukon 4.56 gears
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post #7 of 12 Old 06-15-2013, 04:19 PM
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i turned the wheel so the backside of the knuckle was wide open and i used an air chisel

i tried beating it out first but it was being a pain

some folks put a block against the axle and seal and turn the wheel to push the seal out

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post #8 of 12 Old 06-15-2013, 04:19 PM
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that seal has metal in it so don't let that confuse you with hitting the stub shaft

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post #9 of 12 Old 06-16-2013, 11:38 PM Thread Starter
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Quote:
Originally Posted by ZMANN View Post
that seal has metal in it so don't let that confuse you with hitting the stub shaft
THanks man. I got it with a sledge and brass punch going in around that metal part of the seal. Thought that was part of my axle shaft this whole time haha.

05 EX Cab Short
8 inch Fabtech
38 inch SSRs on 17x10 Centerlines(powdercoated)
SCT Innovative tunes
Banks CAI
Offroad MBRP Stainless 4.5 " and up pipe.
Auto Meter EGT, Fuel pressure, Trans Temp, Oil temp, water temp gauges.
Blue spring , bored 3 hole banjos.
ARP Studs
OEM Ford gaskets.
EGR Delete, cooler delete.
Bulletproof stand pipes
AMP Power Steps
Kicker Audio
Yukon 4.56 gears
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post #10 of 12 Old 07-24-2013, 09:51 AM
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When i have to pull the axle shaft out of my truck to work on the ball joints or replace the exploded outer axle shaft (like I'm currently waiting on the new shaft to fix it) that used to be a huge PITA for me, but a Ford tech buddy of mine showed me a simple 10 second way to pop it out. Take 2 large pry bars and place them on the lip of the inner axle shaft (where the dust seal is for the axle tube, there is a lip of metal on the axle shaft that the seal sits against) and push the pry bar handle towards the frame, this will make the axle shafts and that vacuum seal pop out like a dream with no damage. Hope this helps. First time I did ball joints it took a good 30-45mins of beating with a hammer and I destroyed the seal in the process. Now with this trick it takes longer to get the tools out of the box than it does to pop out the axle shaft and seal.

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