Land Pride RCR1560 brush mower problem.

6083 Views 6 Replies 5 Participants Last post by mbkerk, Jun 12, 2009

Marty

Discussion Starter · Jun 7, 2009

As the title says I am having a problem with my RCR 1560 mower. This is the second time that the rear tail whee has fallen off. It wants to keep breaking the weld at the area where the pivot pin is welded to the yoke that holds the wheel/tire assembly. The last time I welded it I thought I had a good hot penetrating weld. Has anyone else had this type of problem? This time it broke when I hit a bump where the pavement and gravel road come together. The mower was in the raised transport position at the time. I put some washers on the shaft last time to keep the pin from being able to move up and down so much. It almost seems that when I hit a bump the pin is able to move too much, and the weight of the wheel assembly acts as a sort of hammer to break the weld. Is there supposed to be a spring around the pin to absorb the shock?
I'm getting tired of having to tear it apart to weld it. Any help would be appreciated.

Bob

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Marty

Discussion Starter · #3 · Jun 8, 2009

First off it's not only my weld that broke! I've been welding for over thirty years, and it's pretty rare that I have a weld fail. It seems like there is a hammering effect taking place with the weight of the wheel assembly. I'm wondering if there is supposed to be a small spring in the gap that
I filled up with washers. I left the spindle shaft with a about an eighth of an inch of up and down play. When the weld first broke I didn't find any other parts laying around.

Bob

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Marty

Discussion Starter · #6 · Jun 8, 2009

Tonyb, thanks for the manual. My book didn't have good views of the rear tail wheel. I just got done re- welding it. The weld was burnt about 3/16" deep on the shaft. I cleaned it up so that I could push the shaft all the way through the hole in the yoke. I left two washers on the bottom, and one on the top. I pushed the shaft tight against the washers so it protruded through the hole in the yoke then welded it. Now it has just a small amount of free travel, maybe .025". My thought is that the hole that the shaft goes through may have enough wear that the shaft is able to wobble slightly and stress the weld at the bottom end. If ti happens again I'll weld it on the top as well, but then it will need some machining so it won't wear on the washer above it. By pushing the shaft through the hole I was able to get more weld on the side surface of the shaft. Maybe that will help to stabilize the side to side movement of the shaft.

Bob

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