Adjusting the chipmunk jaw crusher – BICO WD Chipmunk User Manual
Page 9
Bico, Inc.
3116 Valhalla Drive, Burbank, CA 91505
Tel. (818) 842-7179 – Fax (818) 842-7976
ADJUSTING THE CHIPMUNK JAW CRUSHER
Note: Steps 1 & 2 only need be completed if attempting to close the jaw gap beyond the factory
setting, as when closing the gap to compensate for wear on the grinding plates.
1. Loosen the hex head jam nut, which is the nut against the crusher body (fig. 1)
2. Loosen the square head set screw. (fig. 2)
3. Turn the hand wheel (fig. 3) to the right to close/increase the jaw gap, or to the left to
open/increase it. When the desired opening has been set reverse steps one and two.
NOTE: DO NOT SET JAWS TIGHTLY TOGETHER as this will result in damage to the
machine. Minimum allowable gap is 1/32 inches on the forward stroke of movable jaw.