TM 5-5420-226-20-1
P r e v e n t i v e M a i n t e n a n ce
Item
No.
47
Interval
Semiannual
C h e c k s a n d S e r v i c e s f o r M 4 8 A 5 A V L B H u l l -
Location
Item to
Check/Service
Fixed Fire
Extinguisher
System
- Continued
C o n t i n u e d
Procedure
Immediately after timing cloud/spray
person No. 3 check that tube assem-
bly and both hull extinguisher lines
are frosted their full length.
All lines should be frosted their full
length. If any line is only partially
frosted, check for clogging in spray
line. If not frosted at all, check for
faulty check valve or clogged supply
line. If duration of spray cloud is
more than 8 seconds, immediately
check to see if No. 2 and 3 cylinders
are frosted. If cylinders are frosted
(discharging), interior release mecha-
nism is defective. Replace interior re-
lease mechanism (page 20-24).
Not Fully Mission
Capable if:
Change 6 3-85
