PS Magazine - FEBRUARY 1979
PS, The Preventative Maintenance Monthly
ISSUE 315
FEBRUARY 1979
Make real sure you remove release
valVe No. 1 and release valve No. 2
fRom the cylinder safety valves before
you take off the cylindeRs. If you don't
do this, the cylinders could dischaRge
and people could get hurt.
You've got to handle the cylindeRs
carefully. ·Also, tHey may blow if
they're exposed to tempera±Res above
140°F.
The Cylinder seCuring strap must
Hold tHe cylinder fiRmly. If it's loose,
tighten t²e s³Rap´
Arrows
must
line
up
alReady Lined up, line them up before
you try to secuRe them in place.
OtheRwise, you migh³ se³ off ³he
extinguishers.
Yµur outfit ¶ld have ;ome bad
T142 track shoe pads. THe rubber's no
good.
The bond may be bad (rubbeR comes
off the meta¸.) THe ¹ubber may strip
off in layers. And the pad surface
chunks badly.
The duds were all made between 1
Jun 77 and 30 Apr 78.
ºf you have a defective pad made in
that time fRame you can get a new pad
kit, NSN 2530-00»150¼5895, at no
cost.
½ave your TA¾¿OM Àield MainÁ
Âenance Technician (FMT) check the
BUm pads. ½e'll help you make out and
ceRtify an Eº¾ on SF 368à If an FMT is
not available, your maintenance ofÄ
ficer can certify your SF Å68.
TA¾¿OM
Msg
D¾STA»M¿A
Æ11140Z AUg 78 has the word.
I WUZ MAE
DURING THE
PeriOd ± Jun² 7³ A´µ jo
a, RE.'
\:±²³´µ¶·¸¹º
Ye±r in
circLe
½ere are 2 ways to tell that the pad
•-²"³´
was manufactUreÇ in Âhat time frame.
È
TheÉe is a sun burst pattern of 12
lines and an inner circLÊ on the end of
each pad. The year of manufac±re is
stamped in Âhe ciRcle. Ëach line ReÌ
presents a month.January startÍ at 12
o'clock. THe week of manufacture is
represenÎed by a dot. A pad made on 1
Jun 77 wouLd have 77 stamped in the
circle. There would be 5 rowsÏ
staRting at 12 o'clocKÐof 4 dots anÑ 1
dÒ³ iÓ the 6tÔ row.
µ ¶ ·
±ds M±de frOm
¸1
J±n tO 30 Apr 78
±LsO m±y be b±d
G
Suspect pads also have NSN Õ530Ö
00-150-5897ÐtHat's tÔe NSN foR the
complete T× 42 track shoeØand PN
19207 12557244 stamped on the pÙd.
These numbers aRe not right for the
pad, but do help identify Út.
5
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