Re: [ihc] Front Spindles Heat treated?

[bearbvd@xxxxxxxxxxxxxx (Greg Hermann)]

At 9:41 PM 3/16/04, James Lidberg wrote:

Jim--

A quick thought on this:

Did this truck have a disc brake conversion on the front ???

IF so--many of the disc conversions can with new hubs with bearing outer
races (cups) already installed AND with a new set of bearing cones and
cups.

Natural reaction when installing such a kit would be, "Why press out the
cups that are already in there, and brand new, just to replace them with
these others ??

ANSWER IS : "Because, even though those cups that are in there LOOK exactly
the same as these new, still in the box ones, they have a SLIGHTLY
different TAPER !!!"

Yep, the disc hubs provided with the kits were from some J**p application
or another, and they came with the cups (wheel bearing outer races) already
installed, BUT the cups in the hubs, appearances to the contrary
notwithstanding, WERE NOT compatible with the cones (inner bearing halves)
that fit the IH spindles properly  !!!!

This bearing mismatch is a SURE recipe for the kind of foilure you
experienced !!!

And, NO, don't ask how I came to know all this, for the past 22 years, no
less !!!!

(But--when it happened to me--I DID get two new spindles !!)

Greg


>Well, the passenger spindle, the one blackened more than blued, the inner
>race was stuck on so I had to crack the
>bearing  to pull it off, and the spindle looked smooth and so does the
>inner race, so the anser is no they weren't
>spinning on the spindle.
>
>I am guessing they spun a bit on the hub though. I think *that* was the
>sound like a deep "oohh" every once in a while,
>especially with the tire being forced sideways at slow speeds on a trail,
>I could hear an "oohh". I say that because
>both hubs are cracked from the inside going out - 2 symetrical crack 180
>degrees apart.. One was almost cracked all the
>way through.
>
>I will say the rollers are straw colored, but 100 percent intact and
>smooth - same goes for the race surfaces.
>
>- Jim in Mesa
>
>> >The funny thing is that the rollers were OK, grease was still packed
>> >around the rollers and it was not burnt. The races overheated, but the
>> >rollers were still intact and not turned coler nor pitted.
>> >
>> >I have never seen bearings fail like this.
>>
>>
>> Was the inner race spinning on the spindle? (i.e. spindle worn too small
>> and\or
>> race ID too large).
>>
>> That would explain having grease still packed on the rollers, yet blueing
>> on the spindle less than 1/4" away.
>>
>> Thoughts?
>> Bob
>>
>>
>
>
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