TM 9-2590-506-13&P
5-17.
DRAIN
BUTTON
MAINTENANCE
INSTRUCTIONS (Continued)
(3) Remove shaft (5), washer (6), spring (7)
and packing (8) from housing (3). Discard
drain button packing (8).
(4) Unscrew cap (9) from shaft (5).
b. Cleaning. Clean the drain button parts as
c. Inspection.
(1) Spring (7). Inspect spring as follows:
(a) There
shall
be
no
kinks,
deformation or permanent set.
(b) If free length is not 2.25 0.20
inches, discard spring.
(2) Inspect drain button parts for evidence
of wear or damage.
(3) Inspect shaft (5) and cap (9) for damaged
or missing threads.
d. Repair. Repair is limited
to replacement of
defective parts.
e. Installation.
(1) Apply a thin coat of adhesive (item I,
screw cap (9) onto shaft. Lightly lubricate
(2) Install new drain button packing (8)
washer (6), spring (7) and shaft (55 into
housing (3).
TA255032
5-23