Clutch Hydraulics

[Biscuit]

Alright here is the situation.

I neglected my '74 FJ40 by not driving it more than 20 mile from Surf-n-Turf 2007 until my preparations for SnT 2008.

It started and I got it moved from the backyard to the driveway. A couple days later I had no clutch pressure. I assumed I had air in the lines from it not being driven for 11 months, so I bled the system.

Pressure had returned, but then on a test drive before Surf-n-Turf (which had already started) I lost clutch pressure right before pulling in my driveway.

I have no movement on the slave arm when I depress the clutch and pumping it does not appear to help.

There is no sign of leaks anywhere in the system.


Use of the search function has shown that under normal use the thought is to replace both the master and slave. Seeing as mine likely failed from the year of no use, should I replace or rebuild?

 

[65swb45]

A. WHERE THE H-LL HAVE YOU BEEN?

B. How many licks does it take to get to the center of a tootsie pop? Uh huh. Rebuild vs replace is something you decide AFTER you disassemble and inspect what you have.

C. A hydraulic failure without an external leak is gonna be the cl master. Two seals. The 'power' seal has failed, but the 'leak' seal is still holding.

Master cylinders and rebuild kits both good in stock Mike.

 

[MoCoNative]

I had a fairly new Toyota OEM master fail from sitting this past summer. Lost all the fluid out the back, and ruined the inside of the firewall, damn brake fluid.

I wouldn't dismiss that the master failed from sitting. Take the slave loose, will it move, that may???? indicate if the slave is shot, or the master. Either way, a rebuild should fix it, and is easy on both, unless you have a bad rust pit or something.