TM 5-3810-294-34
(3) After the preceding adjustments have
(3) Refer to figure 2-15 and remove the
bee completed, lockwire capscrews (1, FIG. 2-12).
swing brake shaft, as follows:
(a)
Remove capscrews (1) and
(4) Using a suitable overhead crane or
other lifting device, attach a lifting sling to the boom foot
lockwashers (2). Remove shield (3), pipe spacers (48),
lugs on the revolving frame and to the gantry peak pin.
retainer (47). Place blocking beneath shaft (26( so it
Install the revolving frame on the carrier. Keep the
cannot fall.
(b) Remove capscrews (4), lock-
revolving frame stabilized; using the lifting sling, until the
hook rollers are installed.
washers (5), and eye bolts (6).
(5)
Refer to TM 5-3810-294-20 and
(c) Remove nuts (38), spring seat
perform the following operations:
(39), spring (40) and spring seat (41). Remove pins (7).
(a ) Install hook rollers.
(d) Remove nuts (9) and spring bolt
(b) Adjust horizontal swing shaft drive
(16).
Loosen nuts (17) so that rod (18) can be
chain tension.
unscrewed from brake shoe bracket (8). Remove rod
(c) Lubricate upper, including adding
(18).
(e) Remove brake shoe brackets (45
oil the gear case.
(d) Install front end attachment.
and 8). Remove nuts (42), lockwashers (43), bushings
(44) and capscrews (II). Brake linings (10} can now be
2-22. Swing Brake Shaft
removed.
a. Removal.
(f) Remove shims (12, 13, and 14).
(1)
Refer to TM 5-3810-294-20 and
Place shims and washers aside for reinstallation.
perform the following operations:
(g) Remove items (22 through 25).
(a) Remove front end attachment.
(h)
Remove brake sheave (46).
(b) Remove hook rollers.
Press shaft (26) out of the bottom of the revolving frame.
(c) Drain oil from upper gear case as
Bearing (29), retainer (28), O-ring (27) and the shaft
show in the lubrication chart.
come off as an assembly. Remove bearing (31) and
(2) Using a suitable overhead crane or
spacer (30) through the top of the bore in the revolving
other lifting device, attach a lifting sling to the boom foot
frame. Do not remove or change the adjustment of
lugs on the revolving frame and to the gantry peak pin.
adjusting bolts (19), jam nuts (20), or brackets (21 ). The
Remove the upper from the carrier and place it on
purpose of these three parts is to keep the brake shoes
suitable blocking, at least 3 feet above the ground to
level.
provide adequate working room beneath the revolving
(i) Remove capscrews (36). Items
frame.
Note. Removing the revolving frame is only
(32, 33, 34, 35, and 37) come off as an assembly.
However, it is recommended that these items not be
necessary the swing brake shaft itself is to be removed.
disturbed unless replacement of parts is necessary.
The wearing components of the brake, with the
exceptions of the brake shaft and shaft bearings (items
26 through 31, FIG. 2-15) can be removed without
undecking the machine.
2-35
