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| Looks like two failed clutches. Sound like a reasonable conclusion? | |
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No, but at the same time, yes.
I had several of these in a print shop (as a Lanier 5265)
My only question is if the rollers are turning while the Pickup is in contact with the paper stack. You can stick your finger on one while it tries to feed (if you can bend that way and hit start) If the clutches are good it WILL turn, so try not to get caught in anything. Also, PFU's 1 and 3 are the same, so you can swap and verify if its mechanical in the PFU or in the wiring harness / IOB. (In the next generation the clutches were replaced with more one way bearings and individual motors in each feed unit and all 3 PFU's became identical.)
The drive for the lower 2 trays is from the same motor, but a different belt, so that would be my first check. Have to pull the power supply, but this gives you a chance to look for annother common problem: spilled developer.
As I said, the clutches are still actual clutches in this machine, but there is a one way bearing on the feed roller shaft designed specifically to prevent the feed roller from spinning backwards, which obviously is bad. This one will have no effect on the jams you are having, but these machines like to dump developer down into the feed, so if there is a bad bearing, chances are this is what happened and they are all shot and the gears are ground down to nothing.
Be prepared to replace the developer mixer bushings (I usually swap the whole unit - its a mess to fix and I never had good luck with a rebuilt one) and every single gear, bearing, and clutch in the rear of all 3 PFU's and in the drive frame. It sux, I know, but you might as well get it all at once because it sux worse to chase that gremlin all over and have to start back at the beginning again. Also plan to spend at least an hour with the vacuum poking it into crevases you never knew existed. Most techs having done this once fit a piece of mylar over the PFU's to keep it happening again.
Good luck.