Hydraulic lift piston

[Cameron Duncan]

Fighting a hydraulic problem replacing as I go.
Changed the pump, cleaned out sludge and old fluid,
now on hydraulic lift piston. I bought a new piston
with a single o-ring and leather backing ring to
replace the original 3-iron ring piston. Any
suggestion on getting the leather ring into it's
position? Thought about soaking in very hot water to
loosten it to slide on.
 

[HCooke]

"Thought about soaking in very hot water to
loosten it to slide on."

Yep. Oring goes toward the oil. Leather backup ring goes on the side away from the oil.
 

[NOXJohn]

I always soak in warm/hot oil not water. The warm oil makes the leather expand and help lube it when sliding on.
 

[old]

There are 2 types of back up rings. One is made of leather and the other rubber I prefer the rubber ones. Easier to put on and been told they hold up a lot longer
 

[Cameron Duncan]

Thanks but I already have the leather as per man. rec. so I'll have to try to use it or wait 2 more weeks for a replacement.
 

[Cameron Duncan]

Thanks, that makes sense, I'll try that.
 

[mbramble]

[L. B,]

The leather is per manuf,as it should be a wiper. No?
 

[TheOldHokie]

[old]

Wait 2 weeks. What don't you have any tractor dealers close to you??. Shoot the last time I got the NAA piston and all I called the dealer and they had them on hand. I could have had it sent for an extra $10 or drive 40 miles one way so I ordered it and had it in 2 days
 

[souNdguy]

soak it in hot water. ( real hot ) for 5 minutes.. then lube with some oil.. and then use 2 spoons ( eatin' spoons ) and walk it on like you were beading a tire on a rim..

leather are mostly what I've used. they worked for 50-60 years.. can't be that bad... I HAVE used the rubber ones. they DO go on easier, and have a cup side.. i won't be alive in 50-60 ys to see if they hold up the same as the leather ones.. so don't matter to me..
 

[L. B.]

Okee-doe-kee OldHokie
 

[FiremanKyle]

Seen this link on O-Ring vs Steel Rings...
Hydraulic Cylinder post