Steering Worm Shaft Lower Oil Seal Runout
Posted: Mon Apr 25, 2016 3:47 am
So I'm setting up the tapered roller bearings on the steering gear worm shaft in the Gemmer B60 steering box on my M37, and noticed that the lower end of the shaft didn't seem to be running true when I rotated the shaft. Sure enough, setting up a dial indicator on the shaft where it contacts the lower seal showed about 0.009" runout. I tried the spare steering worm shaft that I have, and it was almost as bad, with about 0.008" runout.
Is this normal? There's no obvious damage to the seal surface or to the shaft, and with this short stub end of the steering worm shaft being so close to the two roller bearings, I wouldn't expect this much runout.
There's no spec in the book for checking the runout of the steering worm shaft against the lower seal in the steering box, but 0.008" to 0.009" runout seems like it wouldn't be doing the new seal any favors. Or should I not be concerned by this?
Is this normal? There's no obvious damage to the seal surface or to the shaft, and with this short stub end of the steering worm shaft being so close to the two roller bearings, I wouldn't expect this much runout.
There's no spec in the book for checking the runout of the steering worm shaft against the lower seal in the steering box, but 0.008" to 0.009" runout seems like it wouldn't be doing the new seal any favors. Or should I not be concerned by this?