Roaring Noise from front end - Diesel Forum - TheDieselStop.com
'99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the '99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

 
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post #1 of 11 (permalink) Old 03-20-2017, 01:17 PM Thread Starter
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Roaring Noise from front end

2002 Ford F250 7.3L 2WD

I have a roaring noise coming from the front end. It sounds like it is coming from the drivers side, but not sure. You can start hearing it about 25mph until cruising speeds. It does not seem to be the engine since revving the engine does not affect the sound. You can also hear the sound wind down as I am decelerating or coming to a stop. Not sure if it might be a wheel bearing or what?? Any ideas??
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post #2 of 11 (permalink) Old 03-20-2017, 02:28 PM
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Most definitely a wheel bearing. Jack it up and spin the wheel.

2000 F350 Lariat auto 4x4 cc Dually hutch/harpoon mod, zoodad mod, prepump filter/separator, billet fpr gold spring DIY Tymar intake
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post #3 of 11 (permalink) Old 03-20-2017, 02:35 PM Thread Starter
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Should I be able to hear it by spinning the wheel??
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post #4 of 11 (permalink) Old 03-21-2017, 12:47 PM
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When you have it in the air. Push and pull it side to side and top to bottom and check for play. If there is a lot of play, it's your hub assembly.

2/99 F350 XLT, CC, LWB, SRW, ESOF 4x4 Off road, AFE intake, 4" turbo back exhaust, 3 A-pillar pod gauges, 4" lift, 35" Toyo Open Country
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post #5 of 11 (permalink) Old 03-21-2017, 01:12 PM Thread Starter
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Thank you. There is an inner and outer bearing correct? So I just go ahead and replace both bearings while I am in there.
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post #6 of 11 (permalink) Old 03-21-2017, 02:51 PM
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The needle bearing comes with the unit bearing.

Add extra grease as well.
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post #7 of 11 (permalink) Old 03-22-2017, 04:30 AM
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It is a whole assembly or unit. Timken is highly recommended, 515020 I believe is the number for the hub assembly. You can find cheaper bearings but they are just that, cheap.

2/99 F350 XLT, CC, LWB, SRW, ESOF 4x4 Off road, AFE intake, 4" turbo back exhaust, 3 A-pillar pod gauges, 4" lift, 35" Toyo Open Country
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post #8 of 11 (permalink) Old 03-22-2017, 08:53 AM Thread Starter
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So I need to change out the entire hub assembly? I thought I would only need to change out the 2 bearings??
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post #9 of 11 (permalink) Old 03-22-2017, 12:17 PM
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The locking hubs gets reused.

Just for testing purposes remove the lockout and drive for a short period and see if the noise goes away.

If it doesn't you need to change the whole assembly. The wheel bearing is sealed. The needle bearing can be replaced separately.

Also e99 anything before March of 99 needs a different wheel bearing
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post #10 of 11 (permalink) Old 03-22-2017, 12:52 PM Thread Starter
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The truck is 2002 2WD. I don't have locking hubs??

I know that the back bearing is sealed, but don't you just take the seal out and replace the bearing and put a new seal on?
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post #11 of 11 (permalink) Old 03-22-2017, 06:59 PM
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This is just my $0.02, Go in once and be done with it. Replace/service the entire hub, you don't wanna have to go back in 6 months later because the inner bearing bites the dust later. Also its common practice to both sides because typically if one side goes the other is not far behind. I actually just did this on my 2002 F-150 this past weekend, originals made 249k miles.

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