Re: B-414 brakes

Posted by FromJB2 on May 13, 2006 at 07:09:26 from (72.56.121.128):

In Reply to: B-414 brakes posted by wkw on May 10, 2006 at 07:51:05:

Hi Ken, the brakes on the B414 are disk brakes.
They are located inside an enclosure on each side of the transmission case by the back of the running board. Inside each enclosure is an inner and outer disk rotor with a friction lining on it. In between the disk rotors is a ramp and roller mechanism that when you step on the brake the rollers in between 2 metal disks roll up a ramp and expand the distance between the metal disk and jamb them against the disk rotors.

Common problems:
1)Ramp and roller mechanism gets clogged with brake dust.
2)The brake lining on the rotors becomes glazed reducing the friction.

Repair is to remove the braking mechanism from each side of the transmission housing, clean the ramp and roller mechanism, apply very little powdered graphite grease to the ramp and rollers. Next remove the glaze from the disk rotors by using a wire brush or some other tool to roughen the surface. Now sometimes the rotors have been replaced and the brakes are worse because the new rotors do not fit inside the groove worn on the braking surfaces and only make contact on the outer edges. Solution is to grind away the outer edge of the rotors. Some people don't like this solution and would have the braking surfaces turned but that is costly and causes other problems.

Good luck
JB2

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