Could be too much grease inside (if they were recently rebuilt). Grease can cause a suction that holds the locking gear in place resisting the spring that retracts it. Or the cap may be on improperly. As I recall, there are a few ways it;ll go on, but only one way that it works right.

r.c.brown@ieee.org
TruckEditor@tlca.org
Project: 4Crawler
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