Re: [MV] A different M35A2 brake problem

Joe,
Here's a shot in the dark. I think I'd pull both front drums and make
certain both wheel cylinders are the same, i.e., bore, stroke,
part/casting number, shape, etc.
Here's my logic. If 2 hydraulic cylinders are receiving the same
pressure but are physically different ( bore for instance ) one of them
will produce more actual force ( I would think the larger bore ) than the
other.

Are the brake shoes the same width and length left wheel versus right
wheel? A difference here would for sure cause an apparant "imbalance" in
braking characteristics. Do the right brake shoes move as freely as the
old left shoes?

If my understanding is accurate, the M35A2 using a single chamber master
cylinder, does not use a proportioning valve, therefore all wheel
cylinders receive the same pressure in the system. There must be a
physical difference somewhere between the left and right.

How about the hoses? Is the right one getting weak and swelling under
pressure, causing lower applied pressure to that cylinder?

Please let the list know how this turns out. It is an enteresting
problem and the cure would be fascinating, I should think.

Regards,

Frank Cox. 'Nam 1966
MVPA 14530
'45 GMC DUKW
' 66 Kaiser- Jeep M35A2 w/w
'68 M105A1 cargo trailer




On Fri, 06 Aug 2004 21:08:59 -0400 [email]JoeYoungInc@aol.com[/email] writes:[color=blue]
> A fellow over in DE called me a little while ago about a
> problem he's having getting his truck through inspection.
> He had a leaking wheel cylinder on the front right and the
> brakes on this wheel didn't hold, so he failed inspection.
> Now that he replaced the seals, wheel cylinder and brake
> shoes, he has encountered a strange problem. He failed
> inspection again because the right front was not braking as
> strong as the left front. The inspector called it imbalance.
> When he installed the shoes, he took care to make sure drum
> contact was correct, bled the system and adjusted the shoes.
> The strange part is, the better he makes the right side work, the
> left side increases its reading on the brake machine
> proportionally. In other words, the better he makes the right
> side work, the better the left side works, maintaining the
> imbalance. I asked about the flex line at the backing plate
> and he said they checked that and fluid flows right through
> it showing no sign of restriction. He had a 5-ton air jack
> with him and tried several adjustments to both sides, but still had
> the same problem after five tries.
> On this trip to the inspection station, they informed him
> that he must have a muffler, even though the turbo truck is
> thirty some years old. I told him some people have installed
> a non-restricting muffler and I would try to get him a part
> number for it. Any Listers have this info?
> Since he uses the truck for work on a farm (Farm Tags are not an
> option for him), he can't go with antique/historical tags.
> Thanks for any help you can give this guy, he's good people.
> Joe Young
>
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