1998 F150 Clutch question

sublauxation

Lieutenant
Joined
Oct 13, 2008
Messages
1,317
My kid thought the clutch pedal on his '98 F150 was getting squishy so he set out to bleed it.

In the process he managed to twist off the top of the bleeder in the slave cylinder (conveniently located inside the bell housing). I haven't been able to get the broken bleeder out and if I don't have to I'd rather leave it as is.

The bleeder valve is definitely stuck shut (he over tightened it while shutting). We did get in a couple rounds of bleeding before it broke but the pedal was only getting softer. There is a possibility that he didn't fully close the bleeder at least once before letting up on the pedal so it may have sucked in a lot of air.

Plan B.....we tried to bleed from the top through the reservoir by pulling a vacuum on it, which should have worked but we keep getting bubbles (1/2 an hour of trying) and the pedal isn't pumping up at all, it just sits on the floor. In addition the vacuum pump only seems to be holding pressure intermittently.

I'm starting to think we have a leak somewhere in the system drawing in air, but it doesn't seem to be losing fluid from the reservoir and their are no visible puddles or wet spots.

Any thoughts? I was thinking maybe the seals in the clutch master cylinder or an O ring in the line to the slave are going bad giving us all the air? I'm planning to remove the line from the master and vacuum test the master to see if it's holding, then test the line side the same way.

Thanks for any help or ideas.
 

dubs283

Vice Admiral
Joined
Jul 27, 2005
Messages
5,322
I would inspect the master cylinder. Hopefully ford understands the need for decent access to both master and slave cylinders

Are either cylinders removable?
 

Harritwo

Chief Petty Officer
Joined
Oct 4, 2011
Messages
586
Best I remember, the trans has to come out to change the slave cylinder
 

sublauxation

Lieutenant
Joined
Oct 13, 2008
Messages
1,317
I would inspect the master cylinder. Hopefully ford understands the need for decent access to both master and slave cylinders

Are either cylinders removable?
Master isn't too bad, slave is in the bell housing.
I wish I knew more about the initial symptoms but my kid has been wishy washy on his story.
I know some air likely got sucked in while bleeding, and these are a PITA to bleed so I'd hate to throw in the towel and drop the tranny if I don't have to. I may be able to get the bleeder out but I don't want to mess with it if I don't have to if the slave cylinder is still otherwise OK.
 
Top