Tuesday, August 17, 2010

Lexmark T-Series Tray 1 Pickup Roller Replacement

See this post for information on service replacement rollers.

Remove Tray 1 and you have access to the pickup rollers. It's helpful to have the machine positioned so that its front is hanging out over the work surface a few inches.

The rollers are each held in place by a small claw at the end of the axle. Flex the claws inward slightly to allow the rollers to be slid off the ends of the axle. You will encounter the odd roller that won't slide off easily. Be careful not to overflex the claw when this happens, the claws are easily snapped off. Just flex the claw enough that it's not restraining the roller, and apply force as required to get the roller off the axle. The redesigned rollers (40X4308) limit the amount of claw flexure that's possible. It's only the early rollers (40X0070) that present this problem.

When installing or reinstalling early rollers, note and observe the directionality arrows on the hub. The new rollers have no directionality to them.

You may encounter an early roller that's been glued to its axle because its retaining claw got snapped off. In such a case, the only way to renew the roller will be to remove and replace the roller's tire in situ. Extra care must be taken to ensure that the tire's directionality is kept correct.

Whenever you're inspecting pickup rollers, check the action of their axle's one-way clutch as well. The axle should turn freely in the direction of paper feed. It should lock up when turned in the opposite direction. A defective clutch calls for replacement of the complete autocompensator assembly.

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