Join Date: Apr 1999
Location: Midland County,TX, USA
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Re: Proper pinion bearing preload procedure for 10.5" sterling.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Bananas</div><div class="ubbcode-body">This Expedition was 4WD with a Powerstroke. Rear is a full floater with 8 lugs. </div></div>
Now it's beginning to make sense. You're confusing Ford's oversized SUVs. The Expedition is the half-ton jobbie based on an F-150 chassis, and the biggest engine available is a 5.4L V-8 gasser. The rear axle is a Ford SLA with independent suspension. No way is that axle going to bolt onto a SuperDuty pickup.
But you're talking about the Excursion, which begins life an an F-250 regular-cab pickup chassis, and has an optional diesel engine and a Ford "Sterling" 10.5" rear axle.
Do a search on "pinion seal" in the '99-up forums and you'll find several times where I posted the detailed procedures from the Ford workshop manual. Ignore the procedures for a Dana 80 rear axle, as they are a bunch different. I won't post all of it again yet, but I'll give you the short version to answer your question:
<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">
2004 F-Super Duty 250-550/Excursion Workshop Manual
SECTION 205-02E: Rear Drive Axle/Differential — Ford 10.50-Inch Ring Gear
Drive Pinion Flange and Drive Pinion Seal
NOTE: The rear axle shafts must be removed to prevent drag during drive pinion bearing preload adjustment.
Install a Nm (inch-pound) torque wrench on the pinion nut, and record the rotational torque required to maintain rotation of the pinion through several revolutions.
CAUTION: After removal of the pinion nut, discard it. A new nut must be used for installation.
Mark the pinion flange in relation to the drive pinion stem to ensure proper alignment during installation.
Tighten the pinion nut, rotating the pinion occasionally to make sure the cone and roller bearings are seating properly. Take frequent cone and roller bearing torque preload readings until the original recorded preload reading is obtained by rotating the pinion with a Nm (inch-pound) torque wrench.
If the original recorded preload is lower than specifications, tighten to the appropriate specification for used bearings. If the preload is higher than specification, tighten the nut to the original reading as recorded. Refer to Torque Specifications (below)... </div></div>
Rotational Torque Ranges
Pinion bearing preload = 1.8-3.3 Nm (16-29 lb-in)
Now, assuming you screwed up and didn't determine the preload before you removed the pinion nut, your next question is what do you do now? And my answer is "I don't know, but I suspect you're up Stink Creek without a paddle." That's why they make Ford techs. Hope you can find one that knows his stuff. [img]/forums/images/%%GRAEMLIN_URL%%/crazy.gif[/img]
My Sierra Blanca in the sig pic was a great pickup for 11.5 years. I sold it a coupla years ago. I drove a hand-me-down 2003 F-150 SuperCrew 4.6L 2V for a while, but it was unacceptable for towing more than a rowboat. Replacement is a 2012 F-150 EcoBoost SuperCrew Lariat that tows my 5,000-pound TT like a dream.