in Minnesota so if there were no grease zerks the u-joints have to
have rust inside. Just new grease won't correct that. Like I said
replace the u-joints, check the pinion for play if out of specs
replace pinion bearing.
Phil Carrell
--- In Diesel-RVs@yahoogroups.com, fred hengel <fjh1@...> wrote:
>
> Hi Phil and Mike,
>
> I really hate to be negative on mechanical issues as they can really
> surprise you sometimes. It seems to me any competent shop would
have already
> suggested replacing the U-joints when they saw zerks missing and a
dry
> condition. Especially when they diagnosed bad pinion bearings. I
too would
> change the u-joints and test before pulling the rear apart. You are
talking
> lots of labor $ verses minimal labor $ to be sure.
>
> An inexperienced new coach owner is ripe for the taking. Don't ask
me how I
> know this but it's true.
>
> This shop may be the most honest or just the opposite but from what
I have
> read on this post so far I have a bad feeling. I hope I am wrong.
>
> Fred Hengel
>
>
> -------Original Message-------
>
> From: Phil Carrell
> Date: 02/07/08 13:03:38
> To: Diesel-RVs@yahoogroups.com
> Subject: [Diesel-RVs] Re: Vibration when coasting.
>
> Mike; I totaly agree with you. If it were mine I would relace the u-
> joints due to the no-lube issue first. Then go drive it and see if
> you still have the vibration. As someone else said check the ride
> height. I would not just go replacing things unless you have play
in
> the pinion. But defintely replace the u-joints.
>
> Phil Carrell
>
> --- In Diesel-RVs@yahoogroups.com, "ucdavisgsm" <mike@> wrote:
> >
> > Phil, I'm w/Fred on this. Diagnosis on a tapered bearing w/out
> > pulling it is tough unless the thing has seized & spun so that
you
> can
> > see outward signs of the damage.
> > And IF it is the bearing, there is a cause. Mere end play of the
> > assembly doesn't mean bearing for sure and exclusively. IF
bearing
> is
> > bad, cause could be incorrect installation initially, could be
> > inadequate lube, could be overstress from some outa balance part
> like
> > drive shaft or u-joints. IIWM, I'd get new U-joints while in this
> > process regardless, and have the driveline checked for balance
while
> > its out of the rig. Those won't cost a lot, and after opening the
> > rear end, it would be nice to go home feeling like the problem was
> > truly solved. Mike
> >
> > --- In Diesel-RVs@yahoogroups.com, fred hengel <fjh1@> wrote:
> > > Hi Phil,
> > > I have been wondering just how the pinion bearing was diagnosed
> without
> > > pulling it...
> > > Fred Hengel
> >
>
>
>
>
>
>
> [Non-text portions of this message have been removed]
>
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