DIY Piston U-Cup Seal Installation

   / DIY Piston U-Cup Seal Installation #1  

Zork

Veteran Member
Joined
Dec 14, 2003
Messages
1,119
Location
Virginia
Tractor
'04 Branson 3520, '51 Fergy, '96 MTD 18/46, '02 Craftsman GT5000/48
Hey all!
You do not have to purchase any special tools or pay a shop to install these difficult to install seals.
Here is an easy DIY I found and had my mechanic watch it and perform the procedure. It does seem easier if the vice jaws are smaller. I think the best twine/rope to use is a smooth synthetic that is flat which I believe will fully support the seal and be less likely to slice/damage the material.
Also, after installation, a plastic drink bottle was cut wider than the seal to place under a hose clamp to safely compress the seal for installation ease.

 

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