TM 5-3810-206-35
(3) Use suitable sling and lifting device to install
(13) Remove thrustwasher (14), two dowels (17),
shaft (12) in pivot center gudgeon (11).
and two fanged sleeve bearings (10) and (13) from
(4) Slide bevel gear (15) up on shaft (12) and
gudgeon (11).
secure with retaining ring (16).
(14) Remove bearing (9) from gear (7), and pivot
(5) Install fitting (4) on upper end of shaft (12).
center gudgeon (11) from upper frame.
(6) Install flanged sleeve bearing (9) in gear (7).
b. Cleaning, Inspection, and Repair.
(7) Use suitable sling and lifting device to install
(1) Clean all parts and dry thoroughly.
gear (15, fig. 4-2) on top of shaft (21). Install jaw clutch
(2) Inspect shaft for straightness, worn bearing
(16) in gear (15).
surfaces or other damage. Inspect gears for chipped or
(8) Position shifter collar halves (18) on jaw
worn teeth. Inspect bearings for scoring or excessive
clutch (16) and secure with bolts (17), lockwashers (19)
wear. Inspect mounting hardware for damage or defect.
and nuts (20).
(3) Repair by replacing damaged, defective or
(9) Connect lubricating line (10) to shifter collar
worn components, and defective mounting hardware.
half (18) and secure with connector (18, fig. 4-17).
c. Reassembly and Installation.
(10) Install vertical propelling shaft gear-guard
(1) Install pivot center gudgeon (11, fig. 4-17) in
(TM 5-3810-206-12).
upper frame. Install two flanged sleeve bearings (10 and
(11) Install propelling gear oil pan (TM 5-3810-
13), two dowels (17), and thrust washer (14) on pivot
206-12).
center gudgeon (11).
(12) Service propelling gear oil pan (LO 5-3810-
(2) Position then block bevel gear (15) in
206-12).
mounting position beneath revolving frame.
Section XIV. BOOM HOIST BRAKE
c. Cleaning, Inspection, and Repair.
4-29. General
(1) Clean all parts and dry thoroughly. Clean
brake lining with a wire brush, then wipe clean with a
The loom hoist brake operates on the planetary spider
cloth or blow away dirt with compressed air.
on left end of the main drum (hoist) shaft. The hydraulic
(2) Inspect all elements of linkage (levers,
cylinder is connected to the header in lever stand.
springs, etc.) for wear, elongation of holes, or other
damage. Inspect hydraulic cylinder (para 4-36).
4-30. Boom Hoist Brake
(3) Repair or replace defective components.
d. Reassembly.
a. Removal or Installation. Remove or install boom
(1) Position plates (9, and 8, fig. 4-18) on ends
hoist brake at planetary spider (TM 5-3810-206-12).
of hydraulic cylinder (10) and install bolts (6),
b. Disassembly.
lockwashers (11), and nuts (12).
(1) Remove nut (25, fig. 4-18) and bolt (14). As
(2) Assemble studs (23), nuts (33), and
bolt is withdrawn, remove spacer (19) and springs (17).
trunnions (13).
(2) Separate two levers (5) by pulling them off
(3) Position trunnions (15) between two of the
the adjuster (22). Pull spring seats (18 and 21) and
levers (5); trunnion (16) goes in center and trunnions (13
spring (20) off adjuster (22) then remove nuts (24 and
and 15) at ends. Position one trunnion (13) and two
25).
trunnions (15) between the other two levers (5).
(3) To disassemble either of the levers, pull out
(4) Position the lever at each side of hydraulic
trunnions (13, 15, and 16) and separate levers (5).
cylinder (10). Position thimbles (7) at ends of cylinder
Remove nuts (33) from stud (23).
(10). Install spacer (19), springs (17), capscrews (14)
(4) Pull thimbles (7) from hydraulic cylinder (10).
and nut (25).
Remove nuts (12), lockwashers (11), and bolts (6), then
(5) Install nuts (24 and 25) on adjuster (22).
separate plates (9) and end plates (8) from hydraulic
Assemble spring (20) and seats (18 and 21)
cylinder (10).
(5) When necessary, cut rivets (1 and 3) and
remove linings (2) from brake band (4).
4-26
