TM 5-5420-280-23&P
0028 00
LAUNCH BEAM PIN WHEEL DRIVE BRACKET AND DRIVE PINS REPLACEMENT (Contd)
REMOVAL
1.
Remove twelve screws (13), washers (12), and pin wheel bracket (10) from launch beam (1).
NOTE
Note position of smaller teeth on rail track for installation.
2.
Remove ten screws (16), washers (17), and rail track (18) from ramp end of launch beam (1).
NOTE
Perform step 3 only if other drive pins are to be removed.
Removal and installation of drive pins are the same; only one
drive pin with welded washers is shown.
3.
Grind off tack welds from drive pin (15), washers (14), and slide drive pin (15) out of pin wheel
bracket (10). Repeat step to remove all pins (15) as needed.
4.
Remove six screws (4), washers (3), and three limit switch brackets (2) from launch beam (1).
NOTE
Mark position of stop brackets for installation.
5.
Remove eight screws (7), washers (6), and two stop brackets (5) from launch beam (1).
6.
Remove two screws (9) and bracket (8) from launch beam (1).
INSTALLATION
1.
Install bracket (8) on launch beam (1) with screws (9).
2.
Install two stop brackets (5) on launch beam (1) with eight washers (6) and screws (7).
3.
Install three limit switch brackets (2) on launch beam (1) with six washers (3) and screws (4).
NOTE
Washers are spot welded in three places on both ends of drive
pins.
4.
If removed, install drive pins (15) on pin wheel bracket (10) and tack washers (14) on both ends of
drive pins (15).
NOTE
Ensure that all mounting hardware is tightened to metric
standards unless otherwise noted. Refer to metric torque limits in
5.
Install pin wheel drive bracket (10) on launch beam (1) with twelve washers (12) and screws (13).
NOTE
Install rail track as noted at removal.
6.
Install rail track (18) on ramp end of launch beam (1) with ten washers (17) and screws (16).
7.
Install bridge half on bridge pallet. Refer to WP 0018 00.
0028 00-2
