Parking "break"

   / Parking "break" #1  

jfh28

Platinum Member
Joined
Sep 27, 2005
Messages
586
Location
Poconos, PA
Tractor
Power Trac 2425
Parking \"break\"

So far the break in period of the new machine has been relatively harmless. Mostly a few hose connections that needed tightening.

Biggest problem has been with the parking brake. Don't find a need to use it much but I did when digging a drainage swale by our driveway entrance. The machine position put it on a good sized slope and it wanted to move backwards a little even after lowering the bucket. So I set the parking brake to get off the machine and lower the backhoe cleats.

After I finished digging I reversed everything but when I went to move the machine the left rear wheel was locked. And naturally this was Sunday evening and a 1/4 mile away from the house. I wasn't going to leave a brand new machine by the roadside overnight.

After removing the rear tire, which was easy with the backhow legs, I saw the cylinder locked into the wheel sprockets. You could push it in but it would spring right back out again. At first I thought it was working off hydraulics like everything else and figured I had air lock somewhere. Once I traced it back inside I found it was cable activated. A little wiggle on the cable pulled it right out of the wheel. The cable is attached to the cylinder by a set screw that either wasn't tightened or wasn't tightened enough. The cyclinder is pushed out by a spring so just removing the cyclinder allowed me to operate the machine.

This weekends chore is reattaching the cable which looks like a 5 minute job but I'm sure will take me a couple of hours.

Jack
 
   / Parking "break" #2  
Re: Parking \"break\"

Yep, the parking brake on the PT425 is the same way, but on the front wheels. Sometimes the lever becomes a bit lose and the brake sets by itself. It is a weak point in the design and could be solved by using wheel motors with internal brakes, but that would add a few $$ to the total cost of the machine. I like the simple cable operation, and just tighten it back up once or twice a year. Keep those production costs low! /forums/images/graemlins/grin.gif
 

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