[Fot] WG: Quartermaster Clutches

[van.mulders.marcel at telenet.be]

Everytime, when mounting the clutch cover,( i.e. when putting in a new disc) one has to check if the spring fingers have gone inwards about 2mm when the bolts are fastened. If less than 2mm, the clutch may slip, if the spring has gone inwards too much, there may be too little travel left to disengage the clutch. To get at the right range, the pedestals can be shortened, (absolutely all six by the same amount!), or high grade washers are put underneath the pedestals. 
Marcel 

Van: "fot" <fot at autox.team.net> 
Aan: "fot" <fot at autox.team.net> 
Verzonden: Vrijdag 19 april 2019 00:43:55 
Onderwerp: [Fot] WG: Quartermaster Clutches 



All these type of clutches (Quatermaster, Tilton, etc…) suffer from the same thing, that the pressure plate warps from heat. 

The good news: They are designed to be ground flat. Put it on a magnetic table of a grinding machine and let it surface then you have good new clutch. 



Cheers 

Chris 




Von: Fot < [ mailto:fot-bounces at autox.team.net | fot-bounces at autox.team.net ] > Im Auftrag von marty via Fot 
Gesendet: Donnerstag, 18. April 2019 17:47 
An: [ mailto:fot at autox.team.net | fot at autox.team.net ] 
Betreff: [Fot] Quartermaster Clutches 





Looking for some clutch help. I recently disassembled a quartermaster Pro 7.25 single disc clutch, not from my car. I have no experience with this style of clutch. Upon disassembly I observe that the flywheel insert, clutch disc and pressure plate only have had contact on the outer 3/8 " diameter. Upon further investigation the flywheel insert surface is flat. The clutch surface thickness is uniform but if I lay a straight edge across the face of the Quartermaster pressure plate it cups outward. My initial thought was "bingo" this would cause the wear pattern I am observing. Must be something out of whack with the pressure plate insert. I contacted quartermaster and described what I saw and they were not much help other than "something must be warped". I was getting ready to order a replacement pressure plate insert but I stopped over to Jason's shop and saw that he was working on a car that also ran a quartermaster Pro 7.25 clutch but this was a double disc. I took it apart and all components had even wear across the faces as one would expect. I layed a straight edge across the pressure plate out of this assembly expecting to see a flat contact surface and was surprised to see the same cupped condition where the outer pressure plate surface would contact the clutch disc first as the one at home. Now I am at a loss as to what would cause this improper wear pattern. Any experience with this? 





Marty 

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