The bronze sleeve bearings that bear the lower roller tend to accumulate sludge and cease to be free-turning. (This post tells of an outright seizure we encountered.) The registration assembly is a clumsy thing to dismantle completely, but that's seldom necessary. If the upper nylon bearings are ok (they usually are), take apart just the lower roller for cleaning and lubrication; it's quite easy to do. Proceed as follows.
1) Gear
- One claw.
2) Two E-Clips on Lower Roller
3) Wedge the upper (pinch) roller up a bit with a small screwdriver at the left side end; the following will be much easier.
4) Left Side Bronze Bearing
5) Lower Roller
6) Right Side Bronze Bearing
Clean the gear and the bearings w/Varsol.
Clean the roller w/lacquer thinner.
Reassemble, and oil the bronze bearings sparingly w/light mineral oil.
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