OK, What Does This Silly Thing Do?

 
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coaledsweat
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Post by coaledsweat » Wed. May. 17, 2017 12:51 pm

On the steering knuckle on my F350. Appears to be a hose bung with a rubber cap.

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Post by Sunny Boy » Wed. May. 17, 2017 1:01 pm

Looks like a bleeder fitting. Being that it's sticking up in the air like that makes me think it's for getting air out as oil/grease is pumped in ????

Can you post a pic with the rubber dust cover off ?

Paul

 
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Post by coaledsweat » Wed. May. 17, 2017 4:19 pm

All back together now. Just a tube with a hose barb end. It is open, the rubber is just a cap, slides right off and on.

 
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Post by davidmcbeth3 » Wed. May. 17, 2017 5:04 pm

coaledsweat wrote:On the steering knuckle on my F350. Appears to be a hose bung with a rubber cap.
All Fords have a self destruct lever .. I think you found yours.

 
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Post by coaledsweat » Wed. May. 17, 2017 5:09 pm

I'm thinking it has something to do with the vacuum operated locking hubs available on some models. Thank God I have manual hubs on mine!

 
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Post by plumberman » Thu. May. 18, 2017 6:00 am

should be bleeder for front axle, lube heats up and expands

 
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Post by coaledsweat » Thu. May. 18, 2017 6:28 am

plumberman wrote:should be bleeder for front axle, lube heats up and expands
It isn't on the axle housing, it is on the steering knuckle. And it can't vent if capped. It has to come apart, the rotor is bad. I'll get some more pics of it today hopefully.


 
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Post by freetown fred » Thu. May. 18, 2017 6:44 am

I sure hope so!! This has me curious!! :)

 
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Post by cabinover » Thu. May. 18, 2017 6:50 am

I can't see where it does anything on the ones I've taken apart. And why do you have to take that apart to swap out rotors?

 
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Post by coaledsweat » Thu. May. 18, 2017 7:47 am

cabinover wrote:I can't see where it does anything on the ones I've taken apart. And why do you have to take that apart to swap out rotors?
I'm not taking "it"apart, I'm taking the truck apart to change the rotor. You know, wheel off, caliper and bracket off, pull rotor. When apart, I can get better pics. The caliper pins were frozen solid, apparently for a very long time. The outsides of the front rotor have had zero contact with a brake pad in a dogs age. Pitted and lumpy, they have to go. Never had a pedal pulse like that!

 
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Post by gaw » Thu. May. 18, 2017 8:28 am

coaledsweat wrote: The outsides of the front rotor have had zero contact with a brake pad in a dogs age. Pitted and lumpy, they have to go. Never had a pedal pulse like that!
I had to replace several rotors on vehicles due to pitting and corrosion. These were everyday drivers that see over 10,000 miles a year and the brake calipers were working fine. My question is “what the hell are they making rotors out of these days?” Old Datsuns?

 
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Post by coaledsweat » Thu. May. 18, 2017 9:02 am

The port is for the ESOF locking hubs that are vacuum operated, found the answer on the FORD truck forum. Mine are capped because it has the manual actuated hub.

 
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Post by coaledsweat » Thu. May. 18, 2017 10:08 am

Here's a better pic with the cap off.

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Post by cabinover » Thu. May. 18, 2017 6:40 pm

coaledsweat wrote:
cabinover wrote:I can't see where it does anything on the ones I've taken apart. And why do you have to take that apart to swap out rotors?
I'm not taking "it"apart, I'm taking the truck apart to change the rotor. You know, wheel off, caliper and bracket off, pull rotor. When apart, I can get better pics. The caliper pins were frozen solid, apparently for a very long time. The outsides of the front rotor have had zero contact with a brake pad in a dogs age. Pitted and lumpy, they have to go. Never had a pedal pulse like that!
Just read what was written lol. International used to make a great high heat brake grease for pins like that, don't know if it's still available. I normally clean the pins up, and knock the crusty rust off the brake pad lands and then apply a light coat of wheel bearing grease to all of them. A cut off copper fitting wire brush in a drill does a great job on the pin holes and flush with brakecleen, then grease. Seems to hold up pretty well.

 
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Post by cabinover » Thu. May. 18, 2017 6:43 pm

coaledsweat wrote:The port is for the ESOF locking hubs that are vacuum operated, found the answer on the FORD truck forum. Mine are capped because it has the manual actuated hub.
Don't know if that was an early design or what but the vacuum ones I've worked on had two lines. I think probably one to activate and one to vent and release the hub. Works pretty good until it doesn't just like everything nowadays.


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