Question about 1990 Jeep Wrangler

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1990 jeep wranger slave cyclinder

Where is the slave cyclinder located at on a 1990 jeep wrangler??i need to bleed the clutch but i don't know how,it's a new clutch an the guy said there's air in the line

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The clutch slave cylinder on this model is located inside the transmission bell housing. You would have to pull the tranny to see it.
Bleeding the slave cylinder is a fairly simple process.
Underneath the vehicle on the driver side you will see two hydraulic lines going into the transmission where the tranny connects to the engine. If you have trouble locating just follow the hydraulic line from the master cylinder on the firewall.
One of these lines is actually sticking out of the tranny and has a bleeder valve on the end.
You will need a 9/16 box end wrench and a 5/16 or 1/4 inch box end wrench and someone with you to press the clutch pedal while you are under the vehicle.

1. Top off the master cylinder with clean brake fluid. Also, MAKE SURE you keep the fluid level in the master cylinder topped off during this process. You may need to have a second helper to take care of this so you don't have to keep climbing out from underneath.

2.Hold the line with the 9/16 and loosen the bleeder valve a couple turns or until fluid begins to drain. Have someone SLOWLY depress the clutch pedal to the floor and hold it down to the floor until you tighten the bleeder valve back up. MAKE SURE YOU ARE OUT OF THE WAY OF THE SQUIRTING FLUID WHEN THE PEDAL IS DEPRESSED!!

3. Once you are sure the valve is tight, have them pump the clutch pedal a couple times . Repeat step two until the pedal has a full stroke.

Posted on Jan 23, 2009

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Actually the bleeder line comes out of the bell housing on the passenger side. The "internal slave" design is a nightmare. Poor engineering.

Posted on Mar 14, 2009

  • Jeff in 505 Mar 14, 2009

    Forgot to mention, I was taught that if you can find a length of clear tubing that will slip over the bleeder valve and place the other end at the bottom a clear container with a bit of the hydraulic fluid in it as you open the valve and depress the clutch pedal you will be able to watch the fluid. at the bottom of the pedal stroke close the valve. Release the pedal, open the valve and depress the pedal. Repeat this process until you see no more air bubbles in the tubing. MAKE SURE TO KEEP THE MASTER CYLINDER RESERVOIR FULL! If you have three people available it goes quite nicely. One on the pedal, one on the reservoir and one on the bleeder valve. My children are all well versed on bleeding clutch and brakes.

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Autozone.com fix it guide

Posted on Jan 06, 2009

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Small differences there translate to a large difference at the pedal. On linkage type designs, there were several options including longer/shorter throwout bearing or adjustable fork pivot ball. Hydraulic systems should compensate somewhat, but if you are beyond the travel of the slave cyl, I'm not sure there is anything you can do from the outside. I would check that there are no air leaks. If you have an external slave cylinder you may be able to make a slightly longer rod that connects the slave to the clutch fork. I really can't think of anything else to do at this point.
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Clutch


Bleeder screw should be somewhere on the slave cylinder, generally somewhere above the centerline of the unit. (unless someone snapped it off. If that's the case, sometimes you can drill it out, but this takes a lot of skill mixed with some luck. (You can't damage the threads at all, and if you go too deep you will damage the sealing surface). Therefore better to replace it.

Jan 02, 2009 | 1990 Jeep Wrangler

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