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1948 - 1956 F1, F100 & Larger F-Series Trucks Discuss the Fat Fendered and Classic Ford Trucks

Clutch issues

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Old May 31, 2012 | 05:07 PM
  #1  
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aussiecowboy
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From: Echuca VIC Australia
Clutch issues

The F3 is stripped now and I'm in parts buying mode. While it was a driver though it had a strange clutch problem. It started in neutral fine and idled sweet (although smoky). Step on the clutch though and the engine dropped probably 100 revs and loaded up and a strange knocking came from the bellhousing. I pulled the box and everything looked fine, throw out bearing turned no worries, plate looked good as did pressure plate. In fact it all looks fairly new. Truck was a good driver before being stuck in a shed 25 odd years ago. Any suggestions?
 
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Old May 31, 2012 | 05:32 PM
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From: Houston
Check the height of the fingers on the pressure plate. If they are different height it can cause the throw out bearing to rock as the high point rotates.
 
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Old May 31, 2012 | 06:45 PM
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Is this still a flathead? I'd suspect the rear main bearing thrust surface is shot.
 
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Old May 31, 2012 | 07:41 PM
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Yes, it is still the original flathead and 4 speed box. I did adjust the fingers but it made no difference. Didn't think of the thrust bearing, the engine is being rebuilt anyway due to low compression.
 
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