Re: Feeling Sorry For Myself

Posted by Jim On 2009/1/6 1:44:49

The pinion seal offered for sale by Kanters is neoprene, seems to be perfectly fine. Remember, the seal does not seal against the pinion shaft, but rather the input flange. The input flange could easily be built up, or sleeved as previously recommended. The question is, how did the sealing surface look on the flange when you removed and inspected? Is it grooved deeply? Another option, is just replace the input flange.

Another overlooked problem is oil creeping through the clearance between the splines of the pinion shaft and input flange passing oil by the washer and creating a leak. A bit of sealant under the washer can eliminate this syndrome.

As for noise, the pinion nut torque is absolutely critical. Too loose and you have problems, often a pronounced howling on deceleration. Too tight, = heat and howling at cruise (in general for both symptoms) Setting the pinion nut torque after seal replacement is more or less a feel thing. absolutely no free play end to end, and a light amount of preload felt on the bearings when turning the pinion.

Best of luck,
Jim