TM 5-3810-206-35
Position gear (11, fig. 4-6) and spacer, drive shaft (15,
(4) Install capscrews (6) and wire (5) securing
retainer plate (7).
sidestand on revolving frame (12, fig. 4-6).
(5) Position collar (12, fig. 4-5) on idler gear (11)
(2) Install lockwasher (25, fig. 4-8 ) and bearing
and secure with two lockwashers (13) and capscrews
nut (26) on threaded end of shaft (15). Tighten nut as
(14).
necessary to obtain proper alignment of intermediate
(6) Lubricate in ac cordance with (LO 5-3810-
idler shaft gears with meshing gears of jackshaft and
206-12).
main drum shaft.
(7) Install hoist gear guard (TM 5-3810-206-12).
(3) Install bearing retainer (27), lockplate (28)
(8) Start engine, then raise boom (TM 5-3810-
and secure with capscrews (17), lockwashers (23), and
206-12).
nuts (24).
Section VII. MAIN DRUM (HOIST) SHAFT
securing outboard support (17) to outboard bearing
4-14. General
bracket (18) and remove support (17).
The main hoist shaft is located at front of the sidestand
(11) Tag and disconnect all hydraulic lines to
on revolving frame. The shaft includes boom hoist, main
clutch and brake cylinders on main hoist shaft, then plug
hoist, and digging drums. Also on this shaft are the
or cover ports or ends (TM 5-3810-206-12).
drum operating brakes and clutches, plus the auxiliary
(12) Position a suitable sling and lifting device, lift
clutches. Driving power comes from engine through
main hoist shaft vertically until it clears sidestand, then
jackshaft and a gear on the intermediate shaft which
swing it into position and lower to rest on blocks where
meshes with gear on main shaft.
further disassembly may be performed.
b. Disassembly.
(1) Remove cable laggings from hoist and
4-15. Main Hoist Shaft
digging drums (TM 5-3810-206-12).
a. Removal.
(1) Remove cables from drums on main shaft,
Note. Remove shovel sprocket from
and the crowd and retract chain from shovel front end
digging drum (TM 5-3810-206-12)
attachment (TM 5-3810-206-12).
when basic unit is being used as a
(2) Remove the cab (para 2-7).
shovel.
(3) Remove the gantry (pass 2-8).
(4) Remove necessary dirt or gear guards (TM
(2) Remove planetary clutch band, and the hoist
5-3810-206-12).
and digging brake bands from shaft (TM 5-3810-206-12).
(5) Remove the six capscrews (1, fig. 4-5)
(3) Remove boom hoist planetary brake, boom
securing shaft end cap (2) to outboard bearing support
hoist brake, and digging brake from shaft (TM 5-3810-
(17). Remove the bearing retainer.
206-12).
(6) Remove cotterpin (6, fig. 4-9), nut (5), and
(4) Remove boom hoist safety pawl from main
washer (7) from shaft (77, sheet 2 of fig. 4-9).
hoist shaft (TM 5-3810-206-12).
(7) Remove the auxiliary hoisting and digging
(5) Use gear puller and remove bearing (8,
clutches (TM 5-3810-206-12).
(12) from shaft (77, sheet 2 of fig. 4-9).
(6) Remove planetary pinion gears from main
Note.
When removing main hoist
hoist shaft (TM 5-3810-206-12).
shaft from a crane-shovel unit that
(7) Remove spider (14, sheet 1 of fig. 4-9) and
has been, or is now operating as a
spur gear (16) from shaft (77, sheet 2 of fig. 4-9).
shovel you must remove the dipper
(8) Remove sleeve bearing (13) and top keys
trip mechanism (TM 5-3810-206-12)
from shaft (77).
instead of step (8) below.
(9) Remove four capscrews (31), lockwashers
(8) Remove six capscrews (75, fig, 4-9),
(32) and two keeper plates (33) from inside of gear (26).
lockwashers (16), and shaft end cap (99) from bearing
(10) Use a Duller and remove boom hoist drum
caps (6 and 10, fig. 4-4).
(21) and pawl (68) from shaft (77). The pawl pins (34)
(9) Remove two nuts (4), lockwashers (5), and
will remain in gear (26).
bolts (3) that secures bearing cap (6) to sidestand (10,
fig. 4-65).
(10) Remove four nuts (15) and bolts (16)
4-12
