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Preload - Is this right?

Printed From: TheAMCForum.com
Category: The Garage
Forum Name: Eagle and Jeep Specific drive-train issues
Forum Description: Eagle and Jeep used different drive-train components, this is for discussion of these parts specific only to Eagle and Jeep, transfer case, front differential and axle, etc.
URL: https://theamcforum.com/forum/forum_posts.asp?TID=91281
Printed Date: Mar/28/2024 at 3:20pm
Software Version: Web Wiz Forums 12.03 - http://www.webwizforums.com


Topic: Preload - Is this right?
Posted By: DaemonForce
Subject: Preload - Is this right?
Date Posted: Dec/07/2017 at 3:31am
I have spent all day bleeding the master/slave setup on my Eagle and stopped to rip everything apart and figure out what is going on with the slave. Pedal is mush but a different kind of mush than you would experience. I'm used to mechanical linkage clutches on big trucks with a HD clutch. The mush I feel is similar to a brake MC going to slop but not like an all out failure where the brake pedal goes clear to the floor. It's a consistent delay for the pedal to return to the upright standby position. Air bubbles aren't the problem here and I need to figure out why.

Master is a RHD https://www.summitracing.com/parts/cwa-j3238951/overview/year/1984/make/american-motors/model/eagle" rel="nofollow - J3238951 I pulled off Summit last year.
Slave is a cheap ordinary PowerTorque https://www.oreillyauto.com/detail/powertorque-4688/transmission---transaxle-16780/clutch-parts-16462/clutch-slave-cylinder-11336/clutch-slave-cylinder/cs2237/4670975/1984/american-motors/eagle?q=clutch+slave" rel="nofollow - CS2237 unit from mid-Summer.

The master is super easy to bleed and didn't need bench bleeding. The slave, is a consistent issue. The old unit I pulled off an Eagle as a reference unit was rotted and completely rusted out. The new unit looks the same with a smaller bleed screw but when bleeding this unit I noticed there was a consistent preload on the fork. To the point where this would constantly engage the throwout bearing, disengaging the clutch. There's about 8-10lbs of pressure on this thing with or without fluid. I pulled it apart and this unit is heavily spring loaded. WHY?!

Worse, I didn't recognize this problem when I was in a hurry earlier this year, so now I suspect that I'll have to rip everything back out and change out the new PowerTorque clutch. Where do I get a normal slave cylinder for this car?


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1971 Javelin SST
American 304 2v | FMX | AM20-3.31

1983 American Limited
Jeep 4(.7)L S-MPFI | 1982 NWC T-5M (4.03/.76) | Dana30IFS/35-2.72



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