Ok, the loader on the tractor is a 40 though. Different in Canada?
No, it's just that the Green Guys are a bit finicky about original applications of attachments. Most GT sized loaders can be adapted to fit most GTs. Mine has been on a MF12H and a MF1655, and the original application was for a GE ElecTrac. These are all very different sized tractors. The one on my even bigger SCUT is the same size.
It's difficult to say if that is the right seal kit or not. There are many manufactures of 1.5" cylinders, each selecting the seals that they can get the best deal on. I just last year rebuilt a 1.5" cylinder on my MF SCUT loader. All of the seals (except the dust seal) were purchased at The Parker Store for $9.14. They didn't have a new dust seal and the old one wasn't all that old. In fact, the O-rings are in a O-ring assortment kit, along with a multitude of other sizes, that is also sold at PAL.
It comes in a red plastic case, about 5"x7" x 1.5" thick. Catalogue item 8025353 - $24.99 (2017 catalogue price, if it isn't on sale) I've had mine for about 30 years and had to replenish some sizes a couple of times.
Take the cylinder apart and take the seals to a hydraulics shop for replacements. There are 3 different seals for the gland (the plug that the rod goes through), one on the outside circumference, one on the inside of the bore for the rod, and the dust seal in the end that wipes dust off of the rod. The piston may or may not have a seal inside for the rod, but it definitely has one or more on the circumference.
Check for rust in the head (gland) end of the cylinder. That one caught me last year and I had to take it apart again and dip into my little red box for a replacement after honing out the rust.
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Sometimes you get on a roll, sometimes the roll gets on you.
MF GC2310, Husqvarna YTH20B42T
Down for Repairs
MF1655 w/ FEL, MF1655, MF12H, MF8H, MF7H
Spending too much time on MTF to work on my toys.