PT425 Brakes

[MossRoad]

OK, I've been shamed into sharing my photos of the PT425 brakes, so here goes... /forums/images/graemlins/wink.gif

First picture is of the left, front wheel removed. This is why you should check here once in a while... there is a wheel motor in there somewhere /forums/images/graemlins/shocked.gif

 

[MossRoad]

Second picture is of it all cleaned up looking down from the top. From this view you can see how the pin/spring assembly works. You can also see the position of the toothed gear in relation to the hub. Nice welds and thick steel for the motor bracket. /forums/images/graemlins/wink.gif Also, take notice of the shape of the mounting bracket for the wheel motor and the position of the motor. I'll explain later.

 

[SnowRidge]

Moss, thanks for posting those. A couple of questions:

1. How is the brake attached to the hub on your machine?

2. The brake / motor mount clearance looks different in the two pictures. Is that an optical delusion -- or sumpin' else?

3. How does one pull the wheel hub with that brake on there. Any idea?

 

[MossRoad]

Last picture for now is a side view of the brake. You can see the pin engaged in the lower right corner. 12 slots so the brake will engage in what, every 30 degrees of rotation. It works good.

Now here's why I wanted you to pay attention to the motor bracket...

Look behind the gear on the left side, opposite of where the pin is engaged. There is a hole for a brake pin. My guess is that the bracket can be used on either side of the PT425. That eases manufacturing and assembly. Only one bracket to worry about. I wonder if they use the same bracket on the rear wheels, too? This may seem simple and not that big of a deal, but how many times have you worked on something only to find that you have a left hand part and you need the right hand one? Little things like this impress me. We had a 1970 Nova that I could dismantle the engine of with about three different wrenches. That's all I needed. I like this simplicity. This is one of the reasons I like the PT. Simple design. Nothing fancy. Works great. I'd still buy another one in a heartbeat! /forums/images/graemlins/grin.gif

 

[MossRoad]

See the third picture. It is just a typical nut with cotter pin on the end of a hydraulic motor shaft.

The differences in the pictures is only due to the position of the camera.

 

[MossRoad]

Here's why I pulled the wheel off... think I have a leak? /forums/images/graemlins/tongue.gif

 

[MossRoad]

Here's what the inside of a slimed tire looks like... in case you've ever wondered. /forums/images/graemlins/wink.gif

 

[SnowRidge]

<font color="purple"> Here's why I pulled the wheel off... think I have a leak? </font>

Either that, or it was bit by a rabid bat! /forums/images/graemlins/laugh.gif

 

[MossRoad]

And the rim, of course! /forums/images/graemlins/smile.gif

 

[SnowRidge]

<font color="blue"> It is just a typical nut with cotter pin on the end of a hydraulic motor shaft. </font>

That is only the beginning of getting the hub off. You still need to get a <font color="red"> stout </font> puller behind it. (Ask me how I know.)

The brake looks to be in the way.

BTW, the nut took a 42" bar to bust it loose, and the second puller arrived late yesterday by UPS. The first one -- HF's biggest -- is going back to the store in pieces.