Centerforce Clutch Problem - Update

[Brian Schlump <jsbs@xxxxxxxxxxxxx>]

Today I removed the clutch and checked it and the flywheel.  All the 
mounting bolts were tight.  The surface finish of each looked great, no 
heat checking or hard spots evident.  The machining marks were still 
obvious on the surface of the clutch, and the surface grinding marks 
were still obvious on the flywheel.  The thing that looked strange was 
the big difference in color on the face of the clutch plate.  One half 
looked a normal dirty steel color, while the other half was a dark blue 
/ brown color, almost like 1/2 of the clutch plate was contacting the 
disc differently than the other half.  The same thing appears on the 
flywheel, but the brown color wasn't quite as dark as on the clutch.  In 
hindsight, I wish that I had marked the mounting position of the clutch 
to the flywheel, so that I could compare the location of the 
discoloration in each piece. 

The clutch disc still has plenty of usuable lining left, and appears to 
be worn evenly on both sides.  The throw-out bearing was replaced with 
the clutch, and is still good.  The disc slides freely on the input 
shaft, and the tip of the shaft is fine, and so is the pilot bushing.  
The clutch fork lines up with the centerline of the hole through the 
bellhousing.  

I'm still puzzled....Brian

'64 Belvedere
Davenport, Iowa

"The difference between ordinary and extraordinary is that little 
extra."


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