(3).
Repair minor cracks or breaks in
(9)
Install shims (88, 84, and 51, fig. 5-6) as
brakedrums, jaw clutches or collar by welding. Replace
marked for reassembly, then install bearing caps (21)
defective components, gaskets, or mounting hardware.
and bolts (31).
c. Reassembly and Installation.
(10)
Adjust position of propelling gear (10,
(1).
Install two bearings (1, fig. 5-9) in each
brakedrum (5).
adjustment collar (9, fig. 5-9) and moving it in or out until
(2).
Reassemble halves of adjusting collar
gears are properly alined. Secure adjusting collar in
(9) on shaft (8) and secure with capscrews (10),
position by tightening two nuts (16) on bolts (10).
lockplate (17), and nuts (16).
(11)
Connect shifter yokes of propel clutch
(3).
Install two keys (14) on shaft (8) and
shifter to jaw clutches (para 5-5).
press bevel gear (11) into position.
(12)
Install propel chains (TM 5-3810-201-
(4).
Slip a jaw clutch (6) on each end of shaft
12).
(8).
(13)
Install propelling brake bands (TM
(5).
Install two keys (3) on each brakedrum
58810-201-12).
(5) and press a sprocket (2) on each brakedrum (5).
(14)
Connect lubricating lines to horizontal
(6).
Install a brakedrum (5) on each end of
propelling shaft.
shaft (8).
(15)
Position gaskets (22 and 26, fig. 5-6) in
(7).
Raise shaft (9, fig. 5-8) as assembled,
propelling gear oil pan (25) and seal in place with oil-
into position from underneath the crawler.
proof cement. Position gaskets (80) on oil pan (25).
(8).
Support weight of shaft and install
(16)
Install gaskets and oil pan (25) on
bearings (4, 7, and 13, fig. 5-9) on shaft (8). Secure with
carbody (54) and secure with 10 bolts (27), lockwashers
bearing caps (5, fig. 5-8), bolts (6), lockwashers (8), and
(24) and nuts (28).
nuts (7).
(17)
Lubricate as specified in LO 5-3810-201-
12.
Section VI. CRAWLER FRAME AND TRACKS
wear or other damage. Inspect mounting hardware for
5-14. General
stripped threads, or other damage.
The crawler frame is an all welded, box-type structure
(3) Repair by replacing worn, damaged,
housing the steering and propelling mechanism. It also
or defective components and mounting hardware.
contains the swing gear and supports the revolving
frame on turntable roller circle. Crawler tracks are
c. Reassembly and Installation.
mounted on frame, supported by upper and lower rollers,
(1) Install bushings (4, fig. 5-10), and pins
and the idler sprockets. The center gudgeon and vertical
(8) in left and right hand side bars (3 and 6).
propelling gear pan down through center of the carbody.
(2) Install track shoes (1) on side bars (8
and 6) and secure each with four shoulder bolts (2) and
5-15. Crawl Tracks
nuts (9).
a. Removal and Disassembly.
(3) Install track (TM 5-3810-201-12) and
(1) Remove tracks (TM 5-3810-201-12).
secure with bushing (4, fig. 5-10), 8 spacers (5), and
(2) Remove any of track shoes (1, fig. 5-
master pin (7).
(3) Remove master pin (7) and pins (8),
5-16. Crawler Frame
bushings (4), spacers (5), and side bars (8 and 6).
b. Cleaning, Inspection, and Repair.
a. Removal and Disassembly.
(1) Clean all parts and dry thoroughly.
(1) Remove propelling gear oil pan, propel
(2) Inspect side bars for cracks, or
chain, and upper track support rollers (TM 5-3810-201-
breaks. Inspect pins, bushings, and spacers, and shoes
12).
for
(2) Remove horizontal propelling shaft
AGO 20051A
5-11
