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73-74 140 H3, 54 Blade, 49 Snow Thrower
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Discussion Starter · #1 ·
My front hydraulic couplers are leaking while connected. I replaced the O-rings a while back but couldn't remember the part number so I looked it up. The parts manual shows the O-ring R26448 but also shows a washer M44079. I don't recall having this washer inside mine. The sub number 32246 is the same for both parts. So is (or was) there supposed to be 2 O-rings as indicated by the old sub number? The washer is rubber too. I was expecting it to be Teflon.
 

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If I remember right, the O ring is a number 13 which can be bought almost anywhere. I only have one O ring in my couplers, and they need replacing fairly often.
I usually keep several on hand so I can quickly replace them as they start leaking.

Steve
 

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73-74 140 H3, 54 Blade, 49 Snow Thrower
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336 Posts
Discussion Starter · #3 ·
Looks like the O-rings listed in the parts manual must be inside the coupler. I pick-up 4 at the JD dealer this morning and they were much smaller. So I started digging through my spare parts and found 6 more of the size I don't need. As I recall now I think they were #113. Looking at my leak problem the O-ring looks fine but the male coupler is pitted, so most likely the source of my leak.
 
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