Bico Jaw Crusher - UNM EPSDec 28, 2004 . BICO Jaw Crusher Operation (Rev. . The Bico Chipmunk Jaw Crusher Model 241-36 WD is designed for the rapid . If it is jammed, the.bico crusher is jammed,Portable Rock Crusher for Trails - FHWA - U.S. Department of .For example, the crusher jaw will slow while the blade is being raised. This can cause a rock jam.