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Reply to "Questions regarding Lionel Pulmor motors"

The 2028-100 motor (used in F3s, GP7/9s, EP5s) has no set screw to adjust armature vertical play. If there is too much vertical play just add additional 671M-23 thrust washers either above or below the armature bushing to adjust it. MPC/LTI/LLC 2028-100 motors were assembled slightly more sloppy than their postwar counterparts. I've seen several locomotives with this motor from the 90's with extra thrust washers from the factory on either side of the thrust bearing (instead of the usual one on each side of the thrust bearing) to adjust the vertical play. Adding extra thrust washers is fine, it won't hurt anything.

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