Figure 3-15. Adjusting front and rear drum brake pedal return spring tension.
the dipper trip cable wears or stretches. Therefore, the
removed, since severe wear can occur to the exposed
cable should be inspected to determine that it is safe for
(7) Dipper latch bar adjustment. The dipper latch bar
further use before it is adjusted. Refer to figure 3-19 and
adjust the dipper trip cable tension.
must be adjusted to move forward into the opening in the
(6) Dipper tooth replacement. Dipper teeth can be kept
dipper latch as latch bar wear occurs. Refer to figure 3-
sharp in service by regularly reversing them, top for
20 and adjust the dipper latch bar.
bottom, as they wear. When teeth are worn to about one
third their original length, they must be replaced. Drive
3-28. Crane, Clamshell, and Dragline Attachment
out the attaching pins and replace dipper teeth. Note
a. General Service. The components of the crane
that no digging should ever be done with dipper teeth
attachment must be lubricated at the periodic