Ben & Guys, thanks for the advice. When you look at the truck castings
from the side--you will notice that each half has three bulges, one
under each axle. Those bulges house the place where those springs
reside. The two outside bulges are deeper (higher) than the center
one. Also I measured the depth of the outside vs the middle hole and
they are different. I used the middle part of my caliper to drop down
into the hole, but because much of the frame is curved any measurement
would be somewhat inaccurate for the quick work I was doing.
Since I purchased this unit used, the prior owner could have fooled with
or replaced the original springs, but I can't be sure of that. It is
also possible that AM used different bearings for that middle axle where
the hole might be offset or smaller on both upper and lower surfaces.
However both of these possibilities don't make sense from a
manufacturing point of view--why make them different?
I do have some AM PA's but they have a rigid frame so that's no help.
My much beloved U-boats have the sprung trucks but they are only two
axles and they seem to run just fine--and I might add very quietly.
Bob Werre
On 11/23/11 1:15 PM, pickycat95 wrote:
>
> Bob,
> I have several 3 axle AM locomotives including the Trainmaster with
> the sprung axle bearings. I've never had the issue of which you speak.
> I would carefully inspect the area where the bearing sits to see if
> there is something (dirt)imbedded in the gobs of grease that gets put
> into these things at the factory that might be causing the bearing to
> ride high (or low if you will).
> Ben Trousdale
>
> P.S. I've been away from the list for a while causing trouble on SSTOT
> list.
>
[Non-text portions of this message have been removed]
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