Rotor Size/Please Help
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Junior User
Joined: Jul 2010
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Rotor Size/Please Help
Does anyone know what size the front brake rotors are on a 04 6.0psd? I have looked at 2 diff parts stores and they each have two diff. sizes for the front rotors. One store is 13" and 14.5" and the other is 13.03" and 14.53". I don't know what size i need for the front. I have called 3 diff. ford dealerships and they all say there is only one size that they show. They all 3 also said that they did not show a size like the parts stores are giving me. Thank you for any help.
Lead Driver
Joined: Feb 2011
Posts: 8,241
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From: L.A. (Lower Alabama)
Not sure this is much help but the 30 thousandths difference is likely just splitting hairs even though the 13.03 is correct and more accurate. It has either 13in or 14 1/2in brakes (in shorthand speech). My '06 250 has 14 1/2 front and rear.
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Junior User
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Sounds like i might just have to pull the wheel off and measure the rotor to figure out if i have a 13in or 14.5in rotors. I will be measuring the surface that the pad would brake on, not the the back of the rotor that mounts to the hub? I know that is probably a dumb question but i just want to make sure.
Lead Driver
Joined: Feb 2011
Posts: 8,241
Likes: 155
From: L.A. (Lower Alabama)
Depending on what wheels you have you should be able to tell the difference between the two sizes with a couple of straight edges and a tape measure. Or you could pull the wheel and measure.
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Junior User
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ok thank you for the help. Do you happen to know what size the nut is that i will have to take off to get the rotor off?
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Junior User
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Maybe there isn't a nut i have never done any kind of brake work on a 4wd only on 2wd so it might be a little different.
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Lead Driver
Joined: Feb 2011
Posts: 8,241
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From: L.A. (Lower Alabama)
Funny you should ask. Thought I'd just slap a wrench on it and tell ya but I guess it can't be that easy. I have two wrench sets and neither one has a 16mm! 15 is too small 17 is too big. A 5/8 fits pretty good but looking at the bolt it has metric markings. Put a mic on the bolt and came up with .6246in. That doesn't work out to be anything so I must be a little off. 16mm=.6299, 15.5mm=.6102, 5/8=.6250 so it looks like 5/8 is the winner!
Fleet Owner
Joined: Nov 2003
Posts: 27,881
Likes: 3,595
MY............Loc........................Rotor.... .....................Caliper...................... ........Friction................
99-04.......Front........K-H / TRW 331 x 38 mm....Akebono Twin 54mm....Abex / Federal-Mogul 1222-1A EE
https://www.fleet.ford.com/truckbbas...essd_04abb.pdf
99-04.......Front........K-H / TRW 331 x 38 mm....Akebono Twin 54mm....Abex / Federal-Mogul 1222-1A EE
https://www.fleet.ford.com/truckbbas...essd_04abb.pdf
Hotshot
Joined: Apr 2010
Posts: 19,055
Likes: 235
From: Saratoga Springs,UT
anyone know what the tourque spec is for the Brake Caliper Mount bolts
it looked like they had some loctite on from the factory
I put them in at 135 ft/lbs
I never found this spec when I just did ball joints
thanks in advance
it looked like they had some loctite on from the factory
I put them in at 135 ft/lbs
I never found this spec when I just did ball joints
thanks in advance
Hotshot
Joined: Apr 2010
Posts: 19,055
Likes: 235
From: Saratoga Springs,UT
there is no nut for the rotors
take it off at the 2 bolts that mount the caliper and set the whole caliper assembly on the leaf spring or tie it up and then PRAY that the rotors are not seized on
I also spread antiseize on rotors where it contacts the unit bearing
Fleet Owner
Joined: Nov 2003
Posts: 27,881
Likes: 3,595
Benny - I believe these are correct:
Brakes, disc, front brake caliper pin bolts (2)......................42 ft-lb
Brakes, disc, rear brake caliper pin bolts (2)......................27 ft-lb
Brakes, front disc brake caliper anchor plate bolts (2)...........166 ft-lb
Brakes, rear disc brake caliper anchor plate bolts (2)......128 ft-lb
Brakes, Caliper Bleeder Screw................................13-18 ft-lb
Brakes, disc, front brake caliper pin bolts (2)......................42 ft-lb
Brakes, disc, rear brake caliper pin bolts (2)......................27 ft-lb
Brakes, front disc brake caliper anchor plate bolts (2)...........166 ft-lb
Brakes, rear disc brake caliper anchor plate bolts (2)......128 ft-lb
Brakes, Caliper Bleeder Screw................................13-18 ft-lb