Slave Cylinder - suggestion to free and or rebuild

[LodiCal]

Pistons are are stuck. Suggestions on how to free/un-stick them?

 

[Harry in Ky]

They don't look like valves to me. More like slave cylinders. I have no idea who may have made them.

 

[LodiCal]

They don't look like valves to me. More like slave cylinders. I have no idea who may have made them.

Yes, thank you Harry. I have a PM that says they are 1" bore Wagner brand slave cylinders. I will edit the thread from: "Hydraulic Valve ID and suggestions to Free and or rebuild" to "Slave Cylinder - suggestion to free and or rebuild"

 

[Leejohn]

I would take it off, take the bleed screw out. Tap piston in as far as it well go. Clean real good, sand paper what you can. Put light oil in, come back the next day. Drain the oil and hope it pulls out. If not try air pressure in the bleed hole. Put rag over the end and don't let anyone be in front of it. Do not use the hose side that might have a check valve in it.

 

[LodiCal]

I would take it off, take the bleed screw out. Tap piston in as far as it well go. Clean real good, sand paper what you can. Put light oil in, come back the next day. Drain the oil and hope it pulls out. If not try air pressure in the bleed hole. Put rag over the end and don't let anyone be in front of it. Do not use the hose side that might have a check valve in it.

Thank you Leejohn, I will give that a try tomorrow.

 

[mrmikey]

Replace the bleed screw with a grease fitting and try using a grease gun to force them out.

 

[true temper]

Good idea on using grease to get them out.
Problem is a regular zirk won’t be the right thread.
What kind of machine are we working on?

 

[LodiCal]

Good idea on using grease to get them out.
Problem is a regular zirk won’t be the right thread.
What kind of machine are we working on?

Good evening True. I am working on a Rotheisler Kangaroo. See the following thread: https://www.tractorbynet.com/forums/threads/rotheisler-kangaroo.440805/

In regard to the threads on the slave cylinder, I am guessing that it is a "standard" thread of some sort as I found several videos on YouTube utilizing a grease gun where they swapped out the bleeder valve for a Zerk.

 

[mrmikey]

Problem is a regular zirk won’t be the right thread.

May be able to cobble something up using the input fitting instead of the bleeder screw?

 

[LodiCal]

This guy uses diesel fuel instead of grease and remarks that grease is quite messy.

How to Unstick Frozen Brake Caliper Pistons