McLeod Dual Disc Clutch PROBLEM?

[dieselburner]

I installed a Mcleod dual disc in my truck when the centerforce broke the center out. I noticed just in the last

week that the clutch does not fully engage until I get nearly all the way off of the clutch pedal. It does start

to engage with the pedal about an inch off of the floor. It does not slip even when standing on the throttle in

overdrive at 1500 rpm and letting the boost hit about 43 psi or so. Has anyone seen there mcleod discs wear

out very quickly or is this a "feature" and I shouldn't worry about it?

Steve



Forgot to mention - I installed the clutch march 31 this year and it has about 7,000 miles onit so far. About

500 miles towing a 13K pound trailer.

 

[South Bend Clutch]

dieselburner.



It appears that you reposted this because you did not get much of a response the 1st time. In my opinion, If the clutch is holding good then you should not have a problem. Normally when a hydraulic clutch is warring out, it starts to release closer to the top of the peddle. The clamping power is at it's greatest at this point. I am not exactly sure how the McLeod clutch is designed to operate but if it is smooth and holding the power just run with it.

If it gets worse give them a call and I am sure that they can answer your questions more clearly.





Peter

 

[Joseph Donnelly]

The dual disk clutch has two disks and a center plate that all have to float free of one another for full disengagement. That means more pedal travel = more distance between the pressure plate ring and the flywheel. They all lock up near the top of pedal travel if the clutch is made with correct geometry. Less pedal travel is needed with a single plate clutch because there is only one thing, not three, that needs clearance. Thus, the pressure plate ring does not need to travel so far from the flywheel surface.



So, this amount of pedal travel and the amount of travel involved while the clutch parts are hooking up constitute a "feature" of this design clutch. So long as the parts are well balanced, they won't wobble and need added clearance. So long as you don't overheat the clutch and warp the thin (about 5/16" thick) center plate, it won't need more clearance than originally. It seems you don't have much room for such requirements, and in fact, I think you would find that those who have trouble engaging a gear from a stop have one of the above problems with their dual disk clutch and no longer have enough pedal travel = pressure plate ring travel.