94 Toyota Pickup, 4 cyl. , 2WD, 22RE


Background

Truck has been parked for about a year due to what was initially percieved as a blown headgasket. Just went through the whole new timing cover ordeal and I believe that solved the problem. When it was sitting, the truck was started a couple times because it still ran. Wanted to move it one day and the clutch pedal had no resistance at all. My thought is that the issue must be hydrualic because the vehicle was sitting.

Question

The master cylinder is still full to the top however there is a rubber circle(for lack of better description) floating at the top of the fluid. It is slightly smaller in radius compared to the opening of the cylinder. Sorry no pic, truck is parked at my mom's 100 miles away. Is this supposed to be here??

I don't recall it the last time a opened the master cylinder which must have been a couple years ago. I am hoping I can just change the master cylinder and put in some new fluid.

 

Looks like no comments yet. Is there supposed to be something floating in the clutch master cylinder or should there just be fluid in there? If not could it be an internal seal or something??

 

Give more time for people to respond. My truck has the same thing in the clutch master cylinder. Have you tired bleeding the system? Check for leaks along the lines also

 

Ok. I was wondering if that floating thing would be some type of smoking gun.

I'm thinking I might grab a new master cylinder and slave cylinder and stick them on.

Can you bleed the system even when there is no pressure on the pedal? I guess i could suck some of the fluid out of the master and put some new fluid in then open up the bleeder valve down at the slave. I'm just not sure how to bleed if the pedal has no pressure/resistance at all.

 

I've never done a clutch master cylinder. But I have done a brake master and you have to bleed it on a bench before you install it.
Yes you can bleed it with no pressure, just open up the bleeder screw in the slave and wait till some fluid comes out. It's best to have a buddy when you bleed it.

 

Ok good to know. Wasn't sure if gravity would bring the fluid out of the slave. So as I'm doing this thing I've got my buddy looking at the clear tube to see when there are no bubbles or is it simply just pump, tighten, repeat a certain amount of times? I'm filling the master cylinder and pumping the pedal. Once no bubbles, we close the bleed valve and hopefully there is pressure.

Am I filling the cylinder, putting the lid on, then pumping?

 

It's the same as bleeding brakes if you have done that before. Put all the new parts on fill with fluid and open the bleeder screw in the slave to gravity bleed it first. Tighten the screw back and pump the pedal a few times and hold it down, them open the screw to let air escape and tighten back. Repeat that until all you have coming out is fluid and no air. Keep checking the fluid level in the master. I'm sure you can find some YouTube videos of it if it doesn't make sense.

 

Yeah I'm all good. Have helped a friend with breaks before. I've just read stories over the last couple of days of people spending up to hours bleeding the system before they had a firm pedal. Just want to make sure I do everything right to hopefully avoid that.