From: Ida Heath (spike@defuniak.com)
Date: Sun Jun 13 2004 - 19:54:13 PDT
I will take the shaft out and try it for a while but I'm not sure if the
truck will get the traction it needs to maneuver on anything other than
level asphalt. My Freightliner always starts spinning when I back it up the
apron in to my shop, which is on a little hill and one side of the truck is
higher on one side than the other so I always have to switch the rear wheels
in so that it will make it in to the shop.
Sonny
PPPPPPP
----- Original Message -----
From: Bjorn Brandstedt <super_deuce@hotmail.com>
To: <spike@defuniak.com>
Sent: Sunday, June 13, 2004 4:00 PM
Subject: Re: [MV] Bjorn's recipe for long front tire life (M35)
> Yes, Sonny, the one between the tandem axles. All commercial trucks with
> tandem drive axles use a power divider or interaxle differential to free
up
> the two axles. When they are copled together like on the deuce, the bogie
> resists turning action and you end up with a very large turning circle. It
> also means that whenever you turn the vehicle, the front tires scrub and
> wear out rapidly.
> After I removed this drive shaft, the turning circle went down to 66 feet
> (the manual specifies 74 feet for the deuce with 154 inch wheel base).
>
> Bjorn
>
>
> >From: "Ida Heath" <spike@defuniak.com>
> >To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
> >Subject: Re: [MV] Bjorn's recipe for long front tire life (M35)
> >Date: Sun, 13 Jun 2004 14:34:53 -0500
> >
> >Bjorn,
> >
> >Which driveshaft are you talking about taking out? The one going from
the
> >intermediate differential to the rear differential?
> >
> >Sonny
> >
> >
> >----- Original Message -----
> >From: Bjorn Brandstedt <super_deuce@hotmail.com>
> >To: Military Vehicles Mailing List <mil-veh@mil-veh.org>
> >Sent: Sunday, June 13, 2004 10:16 AM
> >Subject: Re: [MV] Bjorn's recipe for long front tire life (M35)
> >
> >
> > > You are welcome.
> > >
> > > By far the most important fix is the removal of the interaxle drive
> >shaft.
> > > With it installed the truck suffers from severe understeer and is
pushed
> > > forward through the turns. That's what causes the cupping and tire
wear.
> > > Without the driveshaft, the turning radius is reduced to 33 feet (in
my
> > > case, measured repeatedly in a paved parking lot). The manual calls
out
> >a
> > > turning radius of 37 feet.
> > > As far as I know, the A3 version has the same problem.
> > > A good front end alignment is just "gravy".
> > > Lowering the tire pressure in the rear will put more tread on the road
> >for
> > > an even wear.
> > > More pressure in the front because 50 psi just isn't enough for the
> >load,
> >at
> > > highway speed, anyway.
> > > If you have any questions, let me know.
> > > Bjorn
> > >
> > >
> > > >From: Marc Strangfeld <curlyjoe98@yahoo.com>
> > > >To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
> > > >Subject: Re: [MV] Bjorn's recipe for long front tire life (M35)
> > > >Date: Sun, 13 Jun 2004 07:25:04 -0700 (PDT)
> > > >
> > > >Thanks Bjorn
> > > >
> > > >I am in the process of putting 11.00 singles on mine
> > > >and will follow your advice, except for replacing the
> > > >springs. My trip out west is a good test due to the
> > > >constant driving and extreme heat. Last year two 80%
> > > >fronts were trashed in 3,000 miles from the exteme
> > > >cupping.
> > > >
> > > >Marc
> > > >
> > > >
> > > >
> > > >--- Bjorn Brandstedt <super_deuce@hotmail.com> wrote:
> > > > > Friends,
> > > > > Following research for a future article in the
> > > > > Military Vehicles Magazine, I
> > > > > have come up with a recipe that will reduce the
> > > > > front tire wear on the M35
> > > > > 6x6 trucks:
> > > > >
> > > > > 1) Remove interaxle propeller shaft (most
> > > > > important!)
> > > > > 2) Replace shocks and springs if they are originals.
> > > > > 3) Tighten front wheel bearings 1/8 turn on the
> > > > > adjusting ring (check for
> > > > > abnormal heating after the first couple of test
> > > > > drives). This will reduce
> > > > > camber and toe-in errors.
> > > > > 4) Adjust toe-in to 1/8 inch max.
> > > > > 5) Increase front tire pressure to 60 psi and lower
> > > > > rear (duals) tire
> > > > > pressure to 40 psi (9.00-20 tires)
> > > > > (Run on 60 psi on all tires if they are single
> > > > > 900's or 70 psi on all if
> > > > > single 1100's)
> > > > >
> > > > > This will also give you a turning radius, which is
> > > > > much closer to the ideal.
> > > > > Keep the front drive flanges installed for 4x4
> > > > > action when needed.
> > > > > Your fuel milage will also improve.
> > > > >
> > > > > Have a great day!
> > > > >
> > > > > Bjorn
> > > > > MVPA 19212
> > > > > Meadows of Dan, Virginia
> > > > >
> > > > >
> > > > >
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> > > >
> > > >
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