89 jeep comanche clutch problems

Will go into gear when turned off, when started, it will not go in gear. I had some pressure on the pedel, but I took the master cylinder apart to check it, it seems good, but put it back together and now the pedel drops straight to the floor. The master cylinder is pretty new. Any sugestions?
Rick

Master cylinder or slave cylinder? the clutch has a slave cylinder.
did you bleed it before you tested it on the vehical?
Depending on the position of the cylinder, It may need to be bench bled first and then installed on the vehical.
Others just need to be bled and that can be done with it attatched to the vehical using your foot to work the cylinder.
You took apart what now. you need to be a little more specific on what you did.

I thought it was the master cylinder. It is where the resevor is for the fluid and is connected to the clutch pedel on the inside.
I basically was checking if fluid was being pumped from the cylinder into the lines, and it was pumping fine. When I put it back together, I did not bleed the lines. I will do this tomorrow.
If it is the slave cylinder, where is it located.....if I have one?
Thanks
Rick

You are right on with the part just the wrong name is all.
The master cylinder is commonly the brakes hydraulic valve and resivuar .
The clutch has the same item, just a different name. Slave cylinder. Both do basically the same thing.
To blead this unit you need to open the bleeder screw at the same time someone slowly presses on the clutch peddel and before they get the peddel to the floor, You should have the screw closed.
This way there is constant fluid pressure on the line forceing any air out.
Unlike a brake peddel where you can press and let the peddel hit the floor and then tighten your bleeder screw.
You have such a short distance of line and air travels up so the constant pressure is important.
If they do hold the peddel to the floor then it is the guy opening and closing the screw to know if it is done right.

Thanks for the info. I just got around to bleeding the system. The clutch pedal is firm, but it still won't go into gear when the truck is running. It goes in gear when turned off.
Still confussed!

try this.
make sure you are in a clear area or have the vehical jacked up.
Put it in gear and start it.
If it is wanting to move right when you start it without letting out on the clutch or if you start to let it out and it wants to move with the peddel very close to the floor then your clutch rod adjustment is probley out.
this is the rod that goes from the slave cylinder to the fork arm in the trans. you can adjust this by loosening the jam nut and lenghtening the rod.
If your out of adjustment then the clutch assy is shot and needs to be replaced.

Thanks,
I did notice that the line from the cylinder that goes into the transmission was loose. It is able to be pulled in and out about an inch. Is that where the adjustment is?

Yes, there should be a jam nut that can be loosened and that tension taken out.
One full inch of movement tells me that eather the jam nut came loose and it backed out of adjustment (wishfull thinking) or you will be able to adjust this end play out , and after that if you have any more issues with this clutch it will need replacement.
Most people I watch that drive a clutched vehical ride there foot on the clutch peddel causing permature wear.
Not that this is your case but if someone else is driving this let them know about those bad habbits.