PCxp Warranty - Any one have this happen?

**ANeat** · 11-26-2010, 10:17 PM

Thats interesting, in the other thread mentioned it looks like something was broken/sheared off.

If anyone has one that has broken I would be interested in taking a look at it, possibly repair it

**smokinfastlegend** · 12-02-2010, 12:11 PM

How cold was it when you were using it? The tollerances may be off, but what I would like to know is if you warm it up to inside temps if the pieces become tight again. Im wondering if its a case of metal expanding and contracting due to temperature.

**TroyScherer** · 12-02-2010, 12:27 PM

Originally Posted by smokinfastlegend

How cold was it when you were using it? The tollerances may be off, but what I would like to know is if you warm it up to inside temps if the pieces become tight again. Im wondering if its a case of metal expanding and contracting due to temperature.

I was working in my heated garage so it was some where in the 55 - 60 degree range. Looking at the diagrams and the broken part it did seem like it should have been a simple press in fitting. I took the PC inside and pressed the spindle back into the sleeve and left it there to warm up. But even after an hour or more the spindle was still loose and would pop right out.

**ANeat** · 12-02-2010, 01:22 PM

The temp shouldnt matter if everything is the same temp (within reason)

Now if you froze the inner part, and heated up the bearing, then you have created a greater difference in the dimensions that may allow a slip fit.

We do things like that at work all the time. We have a small 2 stage freezer that goes down to -100 farenheight, and also an induction bearing heater.

With those two items you can take a bearing that normaly is a very tight fit and it will just drop into place.

FWIW the bearing like in the PC is a sealed bearing and is not used in an application where it would need heated up

**ANeat** · 12-02-2010, 01:28 PM

Just found this pic nosing around. Certainly looks to be pressed into place.
I see no kind of retainer.

**grantm** · 05-15-2011, 03:18 AM

This just happened to me today, but the inside looked worn down.

**BobbyG** · 05-15-2011, 05:32 AM

If you need this to work now get some LocTite 271. This is specifically designed for securing shafts and bearings in place.

**stupenal** · 01-01-2015, 07:23 PM

I had this happen to me recently on my UDM.

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It looks like the snap ring broke, and now the inner piece that the backing plate screws into can slide around. The entire backing plate actually flew off while I was buffing - luckily I did not have the counter weight smash into the paint (I had a backing plate snap before while buffing my brand new $70k BMW Z4...counterweight proceeded to gouge the paint down to the aluminum hood...i literally felt like crying).

I believe there's a groove where the snap ring can slip in to secure everything. The question is - what size is the snap ring and is this assumption correct? Does anyone have an exploded view parts diagram for the original 7424? I only see one for the 7424xp on PC's website.

See pic

**FUNX650** · 01-01-2015, 10:57 PM

Originally Posted by stupenal

Does anyone have an exploded view parts diagram for the original 7424? I only see one for the 7424xp on PC's website.

Hope this helps:

Porter Cable 7424 Parts List and Diagram - Type 1 : eReplacementParts.com

Bob

**stupenal** · 01-02-2015, 11:17 AM

Originally Posted by FUNX725

Hope this helps:

Porter Cable 7424 Parts List and Diagram - Type 1 : eReplacementParts.com

Bob

Bob

That was helpful - I determined the UDM (at least the version I have) is not a PC 7424 clone. The counter weight design is not constructed in the same manner.

After googling some more, it appears that it is a c clip that came apart. Looks like a replacement c clip can be purchased at any hardware store so I'll see if that fixes anything.

First time using PC, think it's broken?