cap (12) then install fitting (18) in bushing (14).
between bevel gear (2) and two bevel gears (82, fig. 4-
e. Adjustment.
(2) Back off bearing retainer cap (12, fig. 4-
(1) Remove pin (10) and turn bearing retainer
(11).
cap (12) clockwise until all backlash is removed from
Section XI. SWING BRAKE BAND AND OPERATING MECHANISM
(6) Remove cotterpins (35), washers (28),
4-23. General
pins (27), spacers (45), and link (18).
The swing brake band is located on swing brake drum at
(7) Remove cotterpins (10), washers (28),
top of the vertical swing shaft, above the swing gear.
pins (27), spacer (43), and link (30). Lift out link (23).
The band is connected by mechanical linkage to an
(8) Cut rivets (2 and 3) and remove linings (1)
hydraulic cylinder located on sidestand, inside cab to left
from brake band (38).
and behind operator's seat. The cylinder is connected by
(9) Reassemble by reversing steps (8)
copper tubing to a "no swing" brakelock in the control
through (1) above.
box.
The swing clutches, mounted on jackshaft
(horizontal swing shaft), are shoe type clutches which
c. Cleaning, Inspection, and Repair.
are required to actuate swing function of the crane-
shovel.
(1) Clean all parts except lining and dry
thoroughly. Clean lining with wire brush and wipe or blow
away dust or dirt.
4-24.
Swing Brake Band and Operating Mechanism
(2) Inspect lever, links, brackets, and brake
a. Removal.
band valves for cracks, breaks, or elongated holes.
Inspect brake lining for wear. If lining is worn within 1/16
(1) Remove two nuts (5, fig. 4-15) from
inch of rivet heads, it is excessively worn. Inspect
adjusting bolt (37).
hydraulic cylinder for leakage or other defect.
(2) Remove cotterpins (10) and pins (9) from
(3) Repair cracks or breaks, or replace
links (18).
defective components. Repair or replace hydraulic
(3) Remove adjusting bolt (37), spring (39)
cylinder (para 4-39).
Replace defective mount-ing
and brake band (38) from brakedrum.
hardware.
Use new cotterpins at reassembly or
b. Disassembly and Reassembly.
installation.
(1) Remove nut (12) from eyebolt (13) then
d. Installation.
remove eyebolt and spring (16).
(1) Position swing brake band on brakedrum
(2) Remove nut (25), cotterpin (10), washer
and secure with adjusting bolt (37), spring (39) and nuts
(8), and pin (14).
(41).
(3) Remove capscrews (39), lockwasher (48),
(2) Install link (34) on brake band (38) and
and keeper plate (47) from upper end of pin (46).
secure with pin (36) and cotterpins (35).
(4) Remove links (34), capscrew (31), lock-
(3) Adjust swing brake band (TM 5-3810-201-
washer (32), and washer (33) from bottom of pin (46)
12).
and remove pin (46).
(5) Remove cotterpins (14), pins (29), and
links (30).
4-21
