Ok, I have an 87 Toyota 2x4 truck with a 22R, it's a 5 speed. It was leaking clutch fluid about a year ago at the slave cylinder, it was a slow leak so I'd add a little here and there and finally got tired of messing with it and replaced the slave cylinder and the problem seemed to be fixed until I noticed it running out of fluid again. Typically if it gets low on fluid I can just top it off and it will be fine but recently it sat for about a month and was bone dry. I topped the reservoir off, bled the slave cylinder and was back in business (or so I thought) until the next day when it was bone dry again. The confusing thing is that I can't find where the fluid is going? Tracing the line from the reservoir the entire way down to the slave cylinder I cannot find a problem with the line or a leak or even wet spot anywhere. When I filled it up this last time I parked on a clean spot of pavement and there were no wet spots under it even though all the fluid had disappeared again.

Any ideas where I should look to find where the fluid is going?

 

Check the inside of the cab under the carpet, where the clutch master goes through the firewall. Bet its leaking into your cab.

 

Interesting, never thought of that. I'll check it out, thanks!

 

This.

:wabbit2:

 

That's exactly where it was. Does that mean the master cylinder is shot?

 

Time for a new one. Don't buy the cheapest one you can find or you'll be replacing it again.

 

You never smelled the odor of brake fluid in the cab??

I have found that when one starts leaking may as well change both

 

I was going to say, it's only one of three places... the master cylinder piston, any threaded connection between the master and slave cylinder, or the slave cylinder piston. I'm really suprised that the op didn't notice it on the interior, all of that hydraulic fluid must have done terrible things to the carpet/vinyl and/or the interior paint.

I'd buy new, if possible. All of my experiences with rebuild kits have never turned out well. Just a lot easier to replace the entire hydraulic assembly (cluthc master/slave cylinder, brake master cylinder, disk caliper, drum piston, etc), then go through the drama of rebuild. The right-front caliper for my '92 Pickup was about $30 at Auto Zone, and it's been running great since install.

 

Agree. Probably only took me half hour plus bleeding and clean-up.

 

I had the same thing happen before and I never smelled anything. it didn't soak through the carpet either. Just cleaned it up with a rag and never had an issue.

 

might as well replace the slave cylinder while you are at it..

 

I didn't notice the smell at all, but I don't honestly drive it a ton and I think it just started leaking bad while it was sitting at the garage for 2 weeks waiting to be inspected. it did leak through the carpet some but I have very thick rubber floor mats I use because I track a lot of mud in when using it. As soon as I pulled the mat up I saw and smelled it.

 

The clutch master and slave cylinder are one of those things that if you replace one, the other fails shortly after.

 

I put a new slave cylinder on last summer so I didn't replace it again. The master cylinder was very easy to replace, took longer to clean the damn fluid out of the cab than it actually did to fix it!

Either way, I'm in business again....thanks everybody for the quick and spot on advice!