I learned a hard lesson about 2 weeks ago so thought I would pass along so others could take action if needed to prevent what happened to me.
For years to prepare for snow removal I have plugged in my block heater, checked my fluids and hopped on the seat to take care of the snow. As Murphy would have it the nite before we take off for Florida I was in a bit of a hurry and I did just those steps to go out and clean out the yard one last time before heading South for a week. About 10 minutes into the job I noticed hydraulic fluid spraying out on the left side of the front blade. Turns out when I used the angle option on the front blade the front hydraulic fitting must have got caught on a chunk of ice and the ice won the battle. I had plowed the 2 previous nites so had lots of snow in the quick hitch which had turned into ice after it sat for a day. I've owned a JD Tractor for 30+ years now with the front blade quick hitch setup and have never worried about cleaning out the quick hitch of snow and ice and nothing has ever happened. I won't do that anymore. Part of my startup from here on out will be to clean out the quick hitch of snow & ice.
Given the scramble I was in before leaving I called the dealer to see if they had one so I could repair before I left for warmer temps. I was specific in telling them it was for the angle cylinder. They sadly didn't have one and ordered one for me instead so I would have it when I returned. Unfortunately, they ordered the fitting & o-rings for the up/down cylinder (38H1003, R28782, T77814). When I went to put it on this weekend it was clear they sent me down a rabbit hole.
This week-end, once I realized I had the wrong part, I did my own research and found that the Quick Hitch has an optional Angling kit. I always assumed the quick hitch came with the angle h/w. The dealer must have thought both cylinders used the same parts. Turns out that is not the case. Once I found the Angling Kit Parts List for the 1026R Quick Hitch (ST756497) I was able to see that the p/n I really needed was (AA36342).
Picked up the new part tonite and appears to be the correct part. I'll put it on when I need the blade next or when its warmer. Fortunately, when we got dumped on with 18-20" this weekend, I was able to use my blower with full functionality as it doesn't use the angle cylinder. Worked out well as the only time I usually use the blower is for major dumpings which was this weekend. We have a gravel driveway so my primary means for snow removal is my blade.
Bottom line - Clean that quick hitch of Ice & Snow especially if you have the angle cylinder kit.