|
Gary U: First off, glad to hear the old girl is running. Makes it a lot easier to diagnose. Is the flywheel loose ? Look for any grease strings or oil trails being spun from the crankshaft splines. A loose flywheel will knock like crazy, and you don't have too long to fix it before it will become a major ($'s) repair. Old bolts can stretch, so if that is where the problem is, you're going to want to install new 3/4" bolts (I like fine thread grade 8 with tall nuts and hardened washers under them) and use a proper torque wrench to set them. No guessing here ! Do you have excess flywheel endplay ? An easy way to see this is with the engine stopped, engage the clutch and "rock" the lever forward till it stops moving, and aft just to the point where it would want to disengage. If there is endplay, you should be able to see it occur at the edge of the pulley where it overlaps with the pulley flange. If you can see it, you probably have too much, and if so, we'll need to cover that next. If you have lots of play (like over the thickness of a nickel), that should be corrected before you go further. Since the noise is there all the time, it could be a worn out clutch pulley bearing, but since it should only turn when the clutch is disengaged, that might not be the problem. If you said it was noisy only when disengaged, I would look there. Can you determine exactly where the noise is coming from ? I once had a stud that was too long installed in the clutch belt shield, and the gear behind would hit that stud and make a bad racket. It was a simple fix, but that noise of course went away when the clutch was released. As you know, it's easy to disassemble those clutches. If the endplay is right, you might want to take it apart again and see what happens to the noise. Be sure you put the clutch facings on the dowels and not on the bolts. This is a common problem on install. Check that endplay and post back. Frank-in-Tallahassee
70D // 855
| 
