1250 Found A New Home

[Bob95065]

Originally Posted by jsoluna

Let's just all breathe out a sigh for the "previous owners" out there. It's a wonder these tractors held up this long.

It's a testimony to how well made these machines are. I'm using one that I beat on as a high school student. I have a second that was thrashed by a DPO. It didn't take much to get them both running right.

[budscub]

Originally Posted by Bob95065

It's a testimony to how well made these machines are. I'm using one that I beat on as a high school student. I have a second that was thrashed by a DPO. It didn't take much to get them both running right.

You can certainly say that again. These old birds even when half dead are still twice the machine a 2 yr old box store mowers are.
But now, the box store machines are just that mowers. And provided your lawn is as nice a a golf course, and you meticulously maintain and clean the deck every time you mow, you might get a few years from one. We all know there won't be any of these around in 60,50,40,30 years.

[ccguy]

Admittedly you have a good size set of challenges in front of you...but isn't that part of what drives us in restoring the equipment and giving it new life? You'll work your magic and I can't wait for the final reveal.

[Texas Blues]

Congrats on the 1250! I know the feeling like other QL owners, they just shake, but at full throttle its acceptable. I did the cradle mod and new iso's on my 1200, and it is as good as I can expect it to be on the vibration. I also recently acquired a 1450 in similar condition as your 1250 and there is a lot of work ahead, but it wouldn't be any fun if it were easy, right? TB

[twoton]

jsoluna, Enjoying following along, just my 2 cents..

Originally Posted by Yosemite Sam

... tune the engine ...

I think that is the key right there to reducing vibration.

Originally Posted by Yosemite Sam

I don't know why anyone would ever want to put solid mounts in a Quiet Line.

Unless it was a gear drive.

Originally Posted by johncub7172

I chose factory replacements.

I think that's your best bet right there.

Originally Posted by jsoluna

-44a deck...

It's hard to tell from the picture, I was just wondering what the diameter on your center drive pulley is, kinda looks like 5" making it a 44, I'm probably wrong.

Originally Posted by budscub

is to allow the engine to bounce around a little bit

Exactly. That's why it's good for a hydro, not so much for a gear drive.

Originally Posted by jsoluna

I also watched the driveshaft at low idle and I can see it moving outside of the centerline quite a bit. That rag joint that is spanning the distance where there should really be two joints is deforming and causing the whole driveline to vibrate.

Probably worn out ball bushing and maybe drive shaft too. Ball bushing keeps the shaft running true, rag joint transmits power.

Keep us posted!

[jsoluna]

Originally Posted by twoton

Probably worn out ball bushing and maybe drive shaft too. Ball bushing keeps the shaft running true, rag joint transmits power.

I'm going to disassemble it this weekend. I looked at the Service Manual and it doesn't mention it having two rag joints, just one as the does parts exploded view. Ball bushing should be fixed to the engine side or hydro side of the driveshaft?

[mortten]

There's a bushing mounted in a plate that bolts to the engine and there's a bushing in the coupler at the hydro. Later models had 2 rag joints. Here's the front bushing and plate.

[mortten]

Here's the rear bushing.

[twoton]

Another shot...

[twoton]

This was my 1650 when I first got it. One rag joint and a 5/8" cold rolled steel ball bearing in the transmission input yoke as it was a pre 622952 serial number machine. I went back with two rag joints and kept the ball bearing in place. Obviously had to get longer bolts. And I did that without loosening or removing either the engine or the rear end.