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2WD Rotor Install Question

Old 06-14-2019, 09:12 AM
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I've read some reviews on here that the Centric kit is a hit or miss. Torqued, if you are 205 and you had to jump on a cheater, that spindle nut was waaaayyyy too tight. The bearings that were in the Bosch set of rotors that I replaced had at least 95k on them and were still quiet. Maybe try another brand? I guess what I am getting at is when using the proper tools (3/4" tq wrench) it is not hard to achieve that spec. I'm 192 lbs and was able to easily make the wrench click at 295 because the 3/4" is much longer and heavier than a standard 1/2".
Old 06-14-2019, 09:12 AM
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Full disclaimer: I have zero experience in working on a 2wd 11th gen. So the following question may sound a bit pedantic:

What I'm picturing from above descriptions is a rotor with bearings/races pre-installed, unlike the 4wd rotors that are held in by the wheel and lugs with a separate wheel bearing (a divorced hub). Could you not press out the old bearings/races, and press in the new ones, keeping the rotor rather than pay for a new rotor? That would undoubtedly cheaper.

That being said, I did replace with stock rotors with pressed bearings on my 442 with divorced hubs and larger, separate rotors when I redesigned the suspension and brakes a few years ago, and will eventually do the same to my GMC when I get around to it, so I completely "get it."
Old 06-14-2019, 09:15 AM
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Originally Posted by River1
I'm not doubting or questioning the 295 lbs. because I've come across plenty of contradictory information from Ford over the years but this does surprise me. This is from my Ford Workshop Manual:

--On 4X2 vehicles, install the brake disc and hub.
--Install the outer front wheel bearing.
--Install the front wheel outer bearing retainer washer.
--Install the spindle nut.
--While rotating the brake disc and hub, tighten the spindle nut. 30 lb\ft
--Loosen the spindle nut two turns.
--Tighten the spindle nut while rotating the brake disc and hub. 17-24 lb/ft
--Loosen the spindle nut. 175 deg.
--Tighten the spindle nut while rotating the brake disc hub. 17 lb/in (Yes it does say inches)
--Install the nut retainer.
--Install the cotter pin.
--Install the hub grease cap.

From there it goes on the caliper anchor plate and caliper. At this point with the tire on, a light to moderate tug on the tire will spin it 2 or 3 times. At 295 lbs. it doesn't seem like a 180 degree spin would come from the same amount of effort on the tire and why I asked the question.

I have Ford Workshop Manuals from the 70's through 2013 and the procedure is about the same for all of them. I'm not sure what to say except I can't help but feel we're talking apples and oranges here. At first I thought the 295 lbs might be a press pressure for the bearing race or something like that. Anyway, this is good to know. Thanks.
That sounds like the procedure for the 4x4's. My Haynes manual, and Ford fastener diagrams do indeed list 295 ft/lbs

Old 06-14-2019, 10:32 AM
  #24  
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Originally Posted by 650NutKase
...
Torqued, if you are 205 and you had to jump on a cheater, that spindle nut was waaaayyyy too tight.......
No kidding! BTW, kudos for the generous transposition or type-o. I hafta' admit I said 250, not 205.

Perhaps the backstory might help. I had a horrible sounding "POPPING" while turning tight at parking lot speeds that literally sounded like something could break.(ie: like whacking the frame with a hammer). It transmitted through the whole truck, and its 'frequency' was speed dependent such that on a freeway interchange would be s 'growel'. NAPA insisted NUTS were not properly torqued - so I did all I could do with my 200 lb Torque wrench. Napa ultimately paid for a brake shop visit - who found nothing, but suspected bolts that hold calipers to spindle hub.

I took it to a private shop that impact hammered all the front end bolts/nuts - on stuff I had replaced (total front end, ball joints, tie rods, sway bar ends, struts - etc.) When that didn't stop it, they hammered the spindle nuts good with a 3/4 impact.

NAPA finally made good on their 'Lifetime Warranty'. When I was replacing them ---- I well learned the NUTS were too tight. I twisted a chrome 1/2 > 3/4 adapter. Went to parts store and bought a BLACK one (stamped with 'Max torque 425 ft lbs), and twisted it into. Only way I got the nuts off was using a 24" pipe wrench with a 4' piece of pipe for cheater bar and 'STOOD ON IT'. (all 250 lbs).

Replacement ones are quiet for the moment. But I think the pressed in (SEALED) bearings are undersized or are not lubricated properly.
Old 06-14-2019, 11:40 AM
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Originally Posted by F150Torqued
NAPA finally made good on their 'Lifetime Warranty'. When I was replacing them ---- I well learned the NUTS were too tight. I twisted a chrome 1/2 > 3/4 adapter. Went to parts store and bought a BLACK one (stamped with 'Max torque 425 ft lbs), and twisted it into. Only way I got the nuts off was using a 24" pipe wrench with a 4' piece of pipe for cheater bar and 'STOOD ON IT'. (all 250 lbs).
I made the mistake of using my 1/2" breaker bar with a 3/8" adapter for into a 17 mm socket to loosen a lug nut, and snapped that sucker at only 100 ft lbs. Ever since then, I won't use an adapter for anything that requires more than ~75 lbs. I also have a dedicated 24" x 1/2" breaker bar with a 1/2" appropriate-sized socket for the lugs in each of my vehicles, as I find it far more convenient and speedy than the factory lug wrench. I've also grown my collection of tools to include 1/2" and 3/4" ratchets, a 1" x 3' breaker bar, and when I'm no longer allowed to borrow it from work, will include a 600 ft-lb 1" torque wrench (it's about 4' long)
Old 06-14-2019, 02:51 PM
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I'm not a muscle man, but for me, the nuts came off easily with a standard breaker bar (30"?). Torquing the new ones took a little umph, but wasn't too bad.
Old 06-14-2019, 03:10 PM
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SO I have air tools, and an impact wrench. Is 295 ft/lbs 2 ugga dugga's or 3?
Old 06-14-2019, 03:16 PM
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Originally Posted by tuflehundon
SO I have air tools, and an impact wrench. Is 295 ft/lbs 2 ugga dugga's or 3?
This brings up a good point I want to make. For example, when I did the struts on the truck, the tq spec is 351 ft/lbs if I recall...It took my impact 30 seconds of straight work for it to break them free, so I held it there for 30 seconds putting it back on. Is it perfect, no. But close enough for jazz.
Old 06-14-2019, 04:33 PM
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Originally Posted by Kevinpmac
Is the consensus here that the Centric mod is a good and reliable fix? My garbage Powerstop warped rotors have to go. Yes, I followed their break-in instructions.
Its hit or miss, it seems. I think I got a good set. A small amount of people on Amazon seem to have gotten a set with bearings that lasts maybe 10,000 miles, but those are rare. My factory front rotors were warped at around 55-58,000 miles. Here it is almost 41,000 miles later, and the Centric rotors are still nice and true. Truck still stops as well as expected for our generation of trucks. BTW, the rear brakes are still the originals. I probably do need to get around to doing them.
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Old 06-15-2019, 08:09 AM
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My Centrics were a bust, but so were my first set of Bosch Quiet Casts. If I had it all to do over again, I would have gone back with OEMs. YMMV

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