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Vacuum hubs grinding over and over

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Old 05-17-2018, 11:16 PM
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Default Vacuum hubs grinding over and over

2017 f150 4x4 with 3.5 ecoboost. Really disappointed in Ford quality. The four wheel drive system relies on dozens of cheap plastic parts. Mine has failed over and over. I have been in a loaner for 24 days so far this year. And only 6,000 miles on the truck. Many other issues as well. I am kicking myself for switching from Toyota to Ford. Never again. I can't see how Ford can hold on to #1 with this kind of poor engineering and quality.
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Old 05-18-2018, 12:25 AM
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Tundras use vacuum actuators as well...with plastic parts.
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Old 05-18-2018, 07:12 AM
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It sucks but, all manufacturers have some sort of issues that plague them or they donít seem to want to fix.

Have they replaced the check valve and/or solenoid yet? If all they are doing is replacing the hubs and it continues, they arenít addressing the cause. New hubs, unless defective or installed incorrectly, should not have any leaks and cause grinding. Thus, they shouldnít be the cause anymore.

Also, I have read now that 2 members have had similar grinding that turned out to be the front diff.

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Old 05-18-2018, 09:24 AM
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Just had both hubs and the check valve for IWEs replaced bc I had a slight grinding noise up front. Noise is gone. 2016 Expedition el Platinum 27000 miles
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Old 05-18-2018, 09:32 AM
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Originally Posted by ZeroTX View Post
Tundras use vacuum actuators as well...with plastic parts.

Understood, but I've driven Toyota 4wd vehicles for over 20 years and there's no comparison in reliability. My f150 has been in the shop for approximately 20% of the time I've owned it. Not good.
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Old 05-18-2018, 09:34 AM
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Ford dealer has replaced basically everything in the system now top to bottom. So I'll keep my fingers crossed!
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Old 05-18-2018, 10:09 AM
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Originally Posted by jcm View Post
Ford dealer has replaced basically everything in the system now top to bottom. So I'll keep my fingers crossed!
Hopefully it's fixed. But, there are not "dozens" of plastic parts involved. Checkvalve, solenoid, and IWEs themselves are the only things I can think of. Trucks have had plastic gears in the hubs for many years, nothing wrong with that, it can last too.
It dawned on me earlier about the repeated failures on some guys trucks, and how some after front shocks [lifts] are installed, is when the problem sometimes start.
I don't know the shop manual procedure, TBH. But, I do know there is a right and a wrong way to reinstall the halfshaft back into the hub and IWE. Before reinstalling the nut on the end of the "spindle", the gear teeth need to be lined up, so when tightening the nut, the gears will mesh and not bind, possibly cracking the sliding gear in the IWE. Preferred way, IMO, would to use a vacuum pump and apply vacuum to the IWE, insuring it's not in the engaged position, which it will be with no vacuum. To align the teeth, just rotate the half shaft, and watch the hub that it is engaged.
Another thing my dealer told me, was that some IWEs are coming in with too much grease prelubed, and they've had luck cleaning out excess grease.
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Old 05-18-2018, 10:20 AM
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Curious to see how the new RAM is holding up. I am getting rid of mine as soon as the legal work is done, and may jump ship. So tired of things breaking or not working properly on this truck and seeing people still having the same issues on 2 year newer trucks leaves me to believe the Ford is really starting to hit rock bottom. So far, all new front except for one axle, and it is back to groaning when I come to a stop, vibrations are still there, steering is back to being wonky, LKA is crashing again, Sirius still cuts out at random and has been "updated" twice, and final straw, the damned passenger seat broke again, clunking when I hit bumps.

I could buy a really nice Luxury car for what these trucks cost, and if I could tow with one, I would!
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Old 05-18-2018, 10:28 AM
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Hopefully, the dealer having replaced everything on the OP's Truck fixes his issues.
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Old 05-18-2018, 10:29 AM
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You're gonna be jumping for joy to be rid of that one.
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