TM 55-1520-240-23-4
5-89.1
REPLACE LAG DAMPER LIQUID SIGHT INDICATOR
(Continued)
5-89.1
1.
Check liquid level (1) in sight glass of indicator
(2). If liquid level is below the bottom of the
indicator, do the following:
a.
Remove lockwire (3). Loosen cap (4).
b.
Loosen nut (5). Turn vent valve (6) 90º
counterclockwise.
c.
Remove lockwire (7). Remove indicator (2)
and packing (8) from tank (9).
d.
Discard packing (8).
e.
Go to step 3.
2.
If liquid level is visible in sight glass (1), do the
following:
a.
Remove lockwire (3) and cap (4).
b.
Drain tank (9).
c.
Loosen nut (5). Turn vent valve (6) 90º
counterclockwise.
d.
Remove lockwire (7). Remove indicator (2)
and packing (8) from tank (9).
e.
Discard packing (8).
3.
Install replacement indicator (2) and new packing
(8) in tank (9).
4.
Lockwire indicator (2) to tank (9). Use lockwire
(E231).
5.
Rotate vent valve (6) over sight indicator (2).
Tighten nut (5).
6.
Tighten or install cap (4), as applicable. Lockwire
cap to nut (5). Use lockwire (E231).
FOLLOW-ON MAINTENANCE:
Service lag damper (Task 5-92).
END OF TASK
5-540
