Jim,
My one arm loader has a hydraulic pump driven from the flywheel pulley. I wanted to be able to still use the front pto for my snow thrower and mower deck. This is what the loader looks like.
The pulley will not handle side load very well. I had put a 1/4 inch thick washer between the pulley and the flywheel. Without the washer, the belt would it the flywheel screen bolt heads. Because the pulley was 1/4 inch closer to the hydro pump I had to drill a new hole for the drive shaft pin so I didn't damage the drive train. On my first design I warped a pulley. The flywheel bolt wasn't clamping the pulley to the flywheel tight enough. The pulley started to wobble. Once it wobbled it didn't take long for it to warp. To solve this problem I made a small plate. I drilled 3 holes in the plate. The plate mounts to the flywheel using the 2 flywheel puller threaded holes and the flywheel bolt. I drilled out the flywheel cup threads and used 4 -3 1/2 inch long bolts to mount the flywheel cup to the flat plate. The flat plate gives the pulley a solid surface to mount to and the flat plate is bolted or held in 3 places. This setup seems very sound.
I made an L bracket to mount the pump.
I had to custom build a steel pulley for the pump. The pulley is one of those 2 part units you get from fleet farm. The reason I had to customize was that those style of pulleys are made for 5L belts. I cut the pulley into 2 halves, like twisting a Oreo cookie in half. I ground out enough material to turn it into a 3L pulley. Then I welded the pulley halves to the hub. I used a calipers to make sure the thickness of the pulley stayed constant.
Here is the final product.
My one arm loader has a hydraulic pump driven from the flywheel pulley. I wanted to be able to still use the front pto for my snow thrower and mower deck. This is what the loader looks like.
The pulley will not handle side load very well. I had put a 1/4 inch thick washer between the pulley and the flywheel. Without the washer, the belt would it the flywheel screen bolt heads. Because the pulley was 1/4 inch closer to the hydro pump I had to drill a new hole for the drive shaft pin so I didn't damage the drive train. On my first design I warped a pulley. The flywheel bolt wasn't clamping the pulley to the flywheel tight enough. The pulley started to wobble. Once it wobbled it didn't take long for it to warp. To solve this problem I made a small plate. I drilled 3 holes in the plate. The plate mounts to the flywheel using the 2 flywheel puller threaded holes and the flywheel bolt. I drilled out the flywheel cup threads and used 4 -3 1/2 inch long bolts to mount the flywheel cup to the flat plate. The flat plate gives the pulley a solid surface to mount to and the flat plate is bolted or held in 3 places. This setup seems very sound.
I made an L bracket to mount the pump.
I had to custom build a steel pulley for the pump. The pulley is one of those 2 part units you get from fleet farm. The reason I had to customize was that those style of pulleys are made for 5L belts. I cut the pulley into 2 halves, like twisting a Oreo cookie in half. I ground out enough material to turn it into a 3L pulley. Then I welded the pulley halves to the hub. I used a calipers to make sure the thickness of the pulley stayed constant.
Here is the final product.