5. Clean out the sludge trap

 
 This crank was purchased off a chap that lives in Scunthorpe and he is apparently one of charlies angles! Anyhow he is a thoroughly decent bloke and sold me his tribsa while i was at his abode but thats another story. It is important the sludge trap is thoroughly cleaned every time the crank is out especially after a regrind. first remove slotted cover screw. Always a difficult one this. Just weld a bolt on and remove with a spanner. Makes it a lot easier dont wory about the screw bin it.
 

 

Next remove the bolt holding the flywheel onto the crank as this protrudes into a location hole in the sludge trap tube. With all the hardend engine sludge it is difficult to remove the tube without damage. They are realy cheap anyway so i run a tap down it put an oversize tube or old bush over the tube bore screw a bolt in. Then draw the tube out

 

 

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This is the culprit. Shouldnt give it bad press realy if it wasnt in all that trapped gunk and grit would have been blown onto the big end shells.Credit where credits due its multiplied the life of the crank.