2072 deck not lifting to stops (pictures added)
 

I have a 2072 with 60" deck, 450 blower. When I removed my deck last fall to install blower the deck would come up and just touch the frame stops. Used blower all winter and reinstalled deck this spring and it is leaving 1" or so between lift arms and frame. I am at the end of adjustment on the two lift links which were new last summer and on deck when it fully lifted. Everything seems to be as it was last year and how the manual shows. I can still use it this way but it is not right and I would like it to fully raise. I rebuild the power steering and changed hyd oil and filter at same time this spring any chance a pocket of air in lift cylinder? Thanks for any help.

I'd take a good look at the rock shaft. Think I recall someone had a problem with the spirol pins being sheered.

The pins both are there and look to be in good shape. When using lever everything seems to be moving the full range in both directions with the tunnel cover removed.

I had this problem on my 1450 just a few weeks ago. It was only lifting on one side. One of the pins was sheared that holds the lift arm to the rock shaft. I removed both of the pins on the lift arms and replaced them with grade 8 bolts. Seems to be working fine so far. I had to use my air chisel to get them out.

Mine appeared to be good to. Take a pry bar and try to move the lift arms on the shaft. Mine only slipped on the shaft with the weight of the deck on them. Both lift arms should also be inline with each other.

both pins are through the rocker shaft with 1/8 " sticking through the outside of the rocker shaft. When using the lift lever with tunnel off the rocker shaft and inner shaft move together with no slipping. If the pins were sheared off would the rocker shaft not slip on the inner shaft?

It may not slip. Just because the pins are sticking out, doesn't mean they aren't bad. How about some pics. :bigthink:

I will get a couple of pictures the first chance I get

Here are a few pictures of the rocker shaft pins, the other side looks exactly the same but hard to get picture of. Also a picture of lift links fully extended in both directions. In the raised one you can see how the lift arm is not touching frame stops. One of mule drive and one complete tractor picture. Hope this helps to solve my problem. Thanks

This may seem like a dumb question but I have had it happen many times. Are you sure the lift stop is not hitting.