Huntingtown520hc 6 #1 Posted January 11, 2021 I have a 1989 520hc and I am confused do I need a lift chain and trunion to attach the lift arm ? It appears that the lift arm is currently connected to the lift lever with a solid rod. Do I need both or am I ok to operate the mower deck with the just the rod? Share this post Link to post Share on other sites
Lee1977 7,214 #2 Posted January 11, 2021 The trunion eyebolt and chain was standard equipment on all later model Wheel Horses. Not sure what you have unless it's the short solid link for the snow blade. Share this post Link to post Share on other sites
Handy Don 14,063 #3 Posted January 11, 2021 1 hour ago, Huntingtown520hc said: I have a 1989 520hc and I am confused do I need a lift chain and trunion to attach the lift arm ? It appears that the lift arm is currently connected to the lift lever with a solid rod. Do I need both or am I ok to operate the mower deck with the just the rod? Can you get a picture and post it so we can get a better look? thanks Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,488 #4 Posted January 11, 2021 https://www.partstree.com/models/c1-20oe02-520-hc-toro-garden-tractor-1989/manual-lift-linkage-516-h-518-h-22/ Garry Share this post Link to post Share on other sites
Huntingtown520hc 6 #5 Posted January 11, 2021 Here are photos Share this post Link to post Share on other sites
c-series don 10,034 #6 Posted January 11, 2021 (edited) You need a chain and trunnion. This way the mower deck is free to float up and down with the terrain. Unless that bar you’re showing is not threaded in the trunnion and can slide up and down. A solid lift link is used for down pressure with a dozer blade, mid-mount grader blade or cultivator. Edited January 11, 2021 by c-series don Share this post Link to post Share on other sites
Huntingtown520hc 6 #7 Posted January 11, 2021 It appears to float 63206849972__2F6073D8-6974-4968-BC42-5441A3EEFC76.MOV Share this post Link to post Share on other sites
Ed Kennell 42,015 #8 Posted January 11, 2021 1 hour ago, Huntingtown520hc said: It appears to float I would add flat washers on the hairpin clip side of the trunnion to keep it square so it does not bind on the lift rod. You may also want to move the trunnion to the rear hole in the lift lever as shown in the dwg. Garry supplied. Share this post Link to post Share on other sites
Handy Don 14,063 #9 Posted January 11, 2021 53 minutes ago, Huntingtown520hc said: It appears to float So it appears a PO replaced the chain/trunnion with the bar/trunnion. Wonder what s/he had in mind? Or maybe this was a feature of the HC (hydro commercial) models? Remembering that your unit has hydraulic lift, I would be thinking about two things: 1. the hydro lift itself doesn't have any float (i.e. it "locks" in the position you set with the control-- up, down or middle) so when the mower moves up and down over the lawn and pushes up or down on the lower lift arm, will that bar slide back and forth through the trunnion smoothly or offer resistance (you can't push on a chain )? 2. mounting a front snowplow (I don't know much about this so hoping someone with better knowledge will ad their 2¢) Share this post Link to post Share on other sites
Lee1977 7,214 #10 Posted January 11, 2021 My C-120 and 48" deck came with a rod and trunnion . It worked fine until it started to bind up and bent the rod. I then replaced with the chain type. 2 Share this post Link to post Share on other sites
Huntingtown520hc 6 #11 Posted January 11, 2021 Thanks for all the help. I think I will keep the rod and replace it with a chain if I run into any issues. 1 Share this post Link to post Share on other sites
