One revolution of tire would be about 7 feet +/-. So if it goes
about 6 to 7 feet in each direction before locking up, I'd be
looking at something jamming up differential. Maybe less distance
depending on what is broken inside. Is diff Limited Slip? I would be
careful about further diagnostics under power - may do more damage.
Does it happen when rolling car by hand in neutral?
Center chunk can be removed - heavy but can be handled - did it when
I was a kid but would use something to support weight these days -
smarter and not as strong.
If one side only, maybe brake on that side, but I doubt both brakes
would lock up at same point. Push with steering wheel turned - then
repeat opposite direction - is it different left vs right?
If you are ambitious - disconnect drive shaft and push - does it
still lock up - if so you have isolated to diff / axle / rear
brakes. But I'm leaning that way anyway. Broken tooth or pin jammed
in ring gear as someone else suggested would be my bet.
Edward Mills
Antique Tractors 1930-1960
Antique Cars 1960-1985
Thank You Marshall for your help!
Mike Moore
Too much guess work, Mike. Be more
thorough in your diagnostics before taking
things apart. You're working waaaay too hard!
--------Marshall
---------- Original Message ----------
From: "Michael Moore mmoore8425@xxxxxxx
[Chrysler300]" < Chrysler300-noreply@xxxxxxxxxxxxxxx>
To: David Schwandt < finsruskw@xxxxxxxxxxxxxxx>
Cc: Ray Jones < 1970hurst@xxxxxxxxx>,
Chrysler 300 List < Chrysler300@xxxxxxxxxxxxxxx>
Subject: Re: [Chrysler300] Sudden drive train
lock-up
Date: Mon, 2 Nov 2015 06:34:32 -0800
David,
Also, I am going to check in my
factory shop manual, but I am considering
pulling out the center section only and
leaving everything else in the car.
I had the tapered hubs off last
year, and I have the tools to pull those
properly. Do you know how the axles are
locked in? I am assuming I must pull both
axles to get the center sec tion out.
Thanks Mike Moore
300H
Quite a bit!!
More than you
would want to try and load by
your (my) self anyway!!
Good luck and
keep us posted , Okay??
No David, I have not. I am going
to talk to a local machine shop
which specializes in drive train
work. I may remove the entire rear
end and haul it down there, as the
u joints don’t seem that bad.
(Do you
know how much an entire rear
axle, drums etc weighs? I am
guessing at least 200#.)
Have
you had either one of
the axles out
recently?
Not
really sure how
your rear is
assembled, but
it sounds like
the center pin
has come loose
in you spider
gears and is
hitting after
one revolution
of the
tires/pinion. Go
forward and it
comes around and
hits again.
When I backed it up, after approx 3
ft the drive locked up sharply, as though
I had hit
something. But
I hadn’t,
and all 4
wheels were
clear. It did
the same thing
going
forward-locking
up after just
a few feet.I
did this
several times
and the
distances
prior to
lockup seemed
the same.
I was able to give it a lot of gas and
slowly it
would move,
but something
was straining.
This afternoon, after completing new
starter motor
installation,
I dropped the
driveshaft to
have a suspect
rear U-joint
replaced
tomorrow, but
I see nothing
which looked
like it was
hitting.
On jack stands under the axle, I also
am able to
rotate both
rear wheels in
either
direction
continuously
without a lock
up. My next
step is to
remove both
rear drums and
ensure there
are no broken
brake
springs, but
if I don’t
see anything
there, I have
no idea where
to look next.
There are no
unusual noises
when I rotate
the wheels.
--
Ray
Jones. Y'all
come on down
an see us. Ya
hear?
____________________________________________________________
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