TM 5-3810-206-35
(13) Install propelling brake bands (TM 5-3810-
oil-proof cement. Position gaskets (30) on oil pan (25).
206-12).
(16) Install gaskets and oil pan (25) on carbody
(14) Connect lubricating lines to horizontal
(54) and secure with 10 bolts (27), lockwashers (24) and
propelling shaft.
nuts (23).
(15) Position gaskets (22 and 26, fig. 5-6) in
(17) Lubricate as specified in LO 53810-206-12.
propelling gear oil pan (25) and seal in place with
Section VI. CRAWLER FRAME AND TRACKS
(2) Remove horizontal propelling shaft (para 5-
5-14. General
The crawler frame is an all welded, box-type structure
housing the steering and propelling mechanism. It also
Note. To remove swing gear (8, fig.
contains the swing gear and supports the revolving
frame on turntable roller circle. Crawler tracks are
removed from crawler (para 2-10).
mounted on frame, supported by upper and lower rollers,
and the idler sprockets.
The center gudgeon and
(3) Remove nuts (11), lockwashers (10), sleeve
vertical propelling gear pass down through center of the
nuts (9, fig. 5-6), and bolts (55 and 56), then lift off swing
carbody.
gear (8).
(4) Remove crawler idler shaft and sprockets
5-15. Crawler Tracks
(5) Remove track support rollers (para 5-10).
a. Removal and Disassembly.
(6) Remove copper tubes (13, 15, and 18, fig.
(1) Remove tracks (TM 5-3810-206-12).
(2) Remove any of track shoes (1, fig. 5-10) by
(7) Wearing plates (53) are provided on carbody
removing four nuts (9) and bolts (2).
to protect against wear by the propelling chains. When
(3) Remove master pin (7) and pins (8),
wear plates are worn, cut them off with a welding torch
bushings (4), spacers (5), and side bars (3 and 6).
and weld on new wear plates.
b. Cleaning, Inspection, and Repair.
(8) Remove sleeve bearings (52) from carbody.
(1) Clean all parts and dry thoroughly.
b. Cleaning, Inspection, and Repair.
(2) Inspect side bars for cracks, or breaks.
(1) Clean all parts and dry thoroughly.
Inspect pins, bushings, and spacers, and shoes for wear
(2) Inspect crawler frame and propelling gear oil
or other damage.
Inspect mounting hardware for
pan for cracks, breaks, or other damage. Inspect swing
stripped threads, or other damage.
gear, steering gear, bearing caps, and bearings for
(3) Repair by replacing worn, damaged, or
damage or excessive wear. Inspect mounting hardware
defective components and mounting hardware.
for burs or stripped threads. Inspect lubrication lines
c. Reassembly and Installation.
(copper tubes)
(1) Install bushings (4, fig. 5-10), and pins (8) in
for breaks or leaks. Inspect wear plates for excessive
left and right hand side bars (3 and 6).
wear.
(2) Install track shoes (1) on side bars (3 and 6)
(3) Repair by straightening bends, welding
and secure each with four shoulder bolts (2) and nuts
cracks or breaks, or replacing defective components or
(9).
mounting hardware.
(3) Install track (TM 5-3810-206-12) and secure
c. Reassembly and Installation.
with bushing (4, fig. 5-10), 3 spacers (5), and master pin
(1) Install bearings (52) in carbody.
(7).
(2) Install copper tubes (13, 15, and 18, fig. 5-6)
then screw fittings in at each end.
(3) Install track support rollers (para 5-10).
5-16. Crawler Frame
(4) Install crawler idler shaft and sprockets
a. Removal and Disassembly.
(1) Remove propelling gear oil pan, propel
(5) Install pipe spacers (20), bolts (19),
chain, and upper track support rollers (TM 5-3810-206-
lockwashers (36), and nuts (38).
12).
5-12
