bleeding clutch

[rhlooney]

I have installed a new slave cylinder on my 2140 john deer, down to nothing but fluid thru bleeder but pedal acts like a dead head half way down, with no clutch action. Banging my head on frame trying to figure out, help me anyone!

 

[puckgrinder85]

Ok, to start off why is it being replaced? As long as the clutch worked fine before hand and you had proper pedal before replacing the slave for whatever reason, you have air in the system. We reverse bleed slaves on cars a lot due to the routing of the lines. Pushing fluid downhill doesn't work great when the air floats back up through the system just as fast. What you do is get an oil can (make sure no oil or residue is in it as it will ruin brake seals) and fill it with brake fluid. Put a small vacuum line on the end of the spout and put it on the slave bleeder and open it. Pump fluid up into the lines that way, watch the master to see if any bubbles come out, suck out master res. as necessary to keep from overflowing.

This is assuming nothing is mechanically wrong with the clutch, pressure plate or linkages etc..

 

[JimRB]

I spent a day trying to bleed an master cylinder someone else put on a 1968 Beetle. I never succeeded and I have bled more than a few on VWs of that vintage. I guess the master cylinder was a dud. So back to your tractor. Either the slave is a dud, the master is a dud, or the clutch has issues internally. I also had a 1966 Squareback that I had taken the engine out, maybe replaced a main seal and back together. I could not get the clutch to work. I ended up putting in a new pressure plate and disk. Fair chance I was not looking at the right thing but the new clutch worked fine.

My newer VWs like to be pressure bled so I got a low cost pressure bleeder. It takes about 10 psi to bleed. Using the pressure bleeder makes it easy to watch the dirty fluid get pumped out. It does not require a kid or spouse in the car pumping the brake pedal, no yelling "press down, hold", open and close bleed nipples, "up on the brake pedal" nonsense.

PG85 might be suggesting that maybe some other component was bad.

My brother detailed the engine bay of his 1970 Cuda. I was not there to see what he was doing. The brakes never worked quite right after that. Eventually he discovered he failed to remove some masking tape when he was reassembling the brakes. Any chance something simple blocking fluid flow.

Can you see the slave cylinder stroke? Can you see the slave cylinder stroke if it is not installed but has some sort of resistance like a few bungee cords to simulate minimal pressure plate? Master cylinder or slave cylinder could have a big pit that is causing an internal leak.

 

[rhlooney]

slave cylinder was leaking fluid and I had no pedal, this also supplies fluid to brakes, can't find a place to bleed brakes at rear chunk, any ideas on that?

 

[Tx Jim]

slave cylinder was leaking fluid and I had no pedal, this also supplies fluid to brakes, can't find a place to bleed brakes at rear chunk, any ideas on that?

Brakes are operated from hyd fluid not clutch reservoir that utilizes brake fluid. Brake bleeder valve is parts key #8