Jump to content

Unofficial Home of Old Simplicity & Allis-Chalmers Garden Tractors

Sign in to follow this  
BigSix

Motor Mount Damage on Briggs Vert. Shaft

Recommended Posts

BigSix
Hi All: This is a short post on the same Airens 11 H.P. vertical shaft tractor that has the oil sump leak. It's an Airens YT11, a 1985, with very little use. I did an ealier post on a different issue, so I thought I'd try to keep this one short, for those who don't like reading novels. (Though I appreciate the patience of those that do--lol!) Once I degreased it, I discovered that the four motor mounts are not like the metal/rubber mounts I've replaced in the past. Rather, they are made out of some soft metal, apparently designed to be "sacrificial," and wear out before they wear the motor mount holes in the tractor frame egg-shaped. Well, it didn't work that way. :( Almost, but not quite. Three of the holes are so close that I don't think they've been enlarged, but I won't know until I get the new mounts, which have a shoulder slightly smaller than the O.D., to fit into the holes in the tractor frame. An 18 mm, Craftsman socket fits pretty snugly in three of the holes, so that it stays up in there--it won't go fully into a couple of them, but goes in enough to stay stuck up in there--in the fourth hole, it's about 1/32" too small, and drops right through. When I replaced the similar, but rubber/metal combo. mounts in another tractor, I had to braze up the holes to make them round again, then hand cut the brass with a round file, to open up the holes to accept the new mounts. This is a nice looking tractor, and I don't want to point the torch at it if I don't have to. Also, it's a time-consuming process, to braze up the holes to the proper size, etc.... Does anybody have a solution that's worked for them, other than the one I described? These mounts are such that it doesn't matter how much you tighten the bolts, as the bolts just squeeze the mount (it looks like a 3/4" tall spacer--i.e., really thick.) The mounts have a large dia. flat washer under the bolt head, under the tractor frame. I was tempted to just double up on the flat washers and tighten the **** out of the motor mount bolts, so that the clamping pressure of the bolts might be enough to keep the engine from moving, despite the one (or more?) over-sized mount holes. Is that a plan? Or is there a better way? Or must I build up the holes like I described? Thanks again, Peter

Share this post


Link to post
Share on other sites
HubbardRA
If you could find a piece of brass or steel tubing that has the right inner diameter to make a bushing from, then drill out the hole in the engine and press in a bushing. This will make the busing sacrificial, but this can be easily replaced.

Share this post


Link to post
Share on other sites
BigSix
Hubbard: Thank you for the suggestion--it may be my next move--lol. A couple of days ago (before the rain :() I brazed the original mounts into the holes. I put the tractor upside down so I could drool the hot braze into the small gap (a 1/32" on a side?) between the "isolator" (read, overpriced metal spacer) and the wholes in the frame, which were fairly uniform. We'll see if it holds--I'll have some pics, eventually. If it doesn't, I may ask you to elaborate on your suggestion, if you don't mind. Going upstate for a few days, so no progress for now. Thanks, Peter

Share this post


Link to post
Share on other sites
Guest
This topic is now closed to further replies.
Sign in to follow this  

×