Figure 60. Location of brakes and clutches.
Boom Hoist Brake
Main Hoist Brake and Secondary Hoist
a. Adjustment. Adjustment may be made to the
(1) This brake (fig. 62, should be just tight
hoist brake bands to compensate for wear as shown in
enough so that it will support the boom
and the load which the machine is
handling. This is a spring loaded brake.
b. Removal. Remove the brake band as shown in
When the boom is raised, the boom hoist
drum turns against the dragging brake. It
c. Cleaning and Inspection.
is best, therefore, to have the brake no
(1) Clean all parts in an approved cleaning
tighter than is required for the operating
solvent and dry thoroughly.
(2) Inspect the lining for excessive wear,
(2) Before making any adjustments, be sure
glazing and other damage. Replace a
that the boom hoist pawl is engaged in the
brake band having defective lining.
boom hoist drum ratchet. If the boom
d. Installation. Install the brake band as illustrated
hoist brake is not tight enough to support