Join Date: Jul 2010
Location: Pittsburgh, PA
Feedback Score: 0 reviews
Sterling Pinion Seal Replacement
I just picked up a used 10.25" Sterling rear axle with 3:55 gears for the trucks in my sig. It's from a 97, but I measured everything and it's pretty much a drop-in replacement. It was at a dealer/boneyard, and obviously sat outside for some period of time. I pulled the pan while I was there, the oil was in good condition, no more evidence of water than I'd expect from condensation over the years, and the internals all appear to be in good shape. The hub bearings seem fine, there's no play in the pinion, and when you spin the driveshaft yoke everything feels "right". I drained the axle when I got home, pulled the axle shafts, slid a magnet up the tubes to pick up the bits of rust that collect there, and I'm presently waiting for the rest of the old gear oil to drip out the axle tubes, one side at a time, since I'm planning to refill it with synthetic.
Now to the problem. The pinion seal area is very rusty, and there's a loose rubber gizmo that looks like it might be part of the seal just flopping around on the pinion yoke. It doesn't resemble the plastic dust shield on my existing Sterling. There's no evidence of leakage whatsoever, but to be on the safe side, I'd like to replace the pinion seal and put on a decent dust shield if I can find or make one. I've been searching the forums, and there are tons of opinions on how to do this job. Some of them seem reasonable, others do not. So what's the right way to change the seal? Do I really have to get a crush sleeve and set the preload, or can I mark the nut and count the turns? If I do have to set the preload, what are the specs?
'89 F250 2WD XLT Lariat Supercab,
7.3 IDI, C6, 10.25" 3:55, dump bed.
Mods: Gear Vendors overdrive, ATS 085/088
"Frankenturbo", boost and EGT gauges in pod,
K&N air filter, cold air intake, filter minder, rear
work lights, 'monback beeper, pintle+ball hitch,
brake controller, CB.
Wish list: 130 amp G3 alternator, front hitch,
new hood, fresh paint.