PS Magazine - NOVEMBER 1974
PS, The Preventative Maintenance Monthly
ISSUE 264
NOVEMBER 1974
i
voiCEMITER-OUtLEt VALVE As:
FACEPIECE-Unusual stiffness, sTick±
iness, bri²Tle surfaces, holeS, tears and
spliTs.
Damaged or missing Temple pins. ³lip
and bu´kle assemblies damaged, cor±
Roded, Torn or missing. (NoTe: a wHite or
rusTµcolored waxlike subsTance on THe
rubber is OK¶ ·hat film proTecTs The
mask¶ JusT wipe iT o¸ if iT accumulaTes.)
¹YELEº»
& O
U
T
»E
RTS
¼ens bro½en, scraTcHed, dirTy,
discolored enougH To inTerfere
¾yerings damaged wiTh vision.
or corroded,
pulled loose
¿Rom faceÀiece¶ OuTseÁ aprons
Âorn, looseà rims cracked.
ÄÅMBLÆÇÈÉVÊËlooÌÊÃ GRÍÎÏ, GÐÎmyÑ
RÍÒÒeÓÔ ÕRÖÎ× cRÍÎÒÍØG RÍØG ÓÖÎÖÊÓÃ
lÉÉÌÊÃ lÉcÙiØG ÌtÐdÌ daÎÖG×ÓÚ ÛÉ1cÊÜ
ÎitÝ×R ÓÍÖÒhRÖGÎ diRtÏà ÓÖÎÖG×Óà lÉÉÌÊÞ
ßàÝl×Ý VÖlVá âãÌÙ âãäÝÏà åÉlâáâà ÝÉäØÃ
±
lÉÉÌe (ØÐæ at æaÌ× Éf ÓiÌÙ ÎÐÌt æ×
±².
.-±²³
thRÉÐGh valv× Ì×Öt)à lÉÌt; VÖlVÊ ÌeÖt
æRÉkeØ ÉR æÊØTÚ ·h× ÌÎÖll lÊVÊR ÓaÎç
ÖG×Óè æiØÓÍØG, lÉoÌ×Ú (it ÌhoÐld
_
T
³
Rn
×ÖÌÍly lÊfÝ ÖØâ RÍGht tÉ cÉØtRÉl ÓRéØkêØG
ÖØÓ æRÊÖthãØG hÉseÌ iØÌiÓe). ëRiØkiØG
tÐæÊ ÓÖÎÖGeÓà loÉÌeà diìÏ,í coÐpliØG
hÖlå ÎÍÌÌÍØGÃ clÉGGÊÓ, ÓÖÎaGeÓî ïtoRaGe
chÖØØ×l ÌÒlit ÉR ÓÍrTÏð
IñL¹ò óôLóE A»»¹õöLIE÷³overs
loose,
ø
dirTy, daÎaged (worn ùlÉcking is
no proúlem ÐØlesû ÏoÐ're working in
Temps of 0°Õ aØd below ÉR undeR unü
usual field conditionÌ like loTÌ of sand
and dusT.
ý
UØdeR those cÉØdiTions yoÐ
need a full gRÉwth of fÐzz on TH×
coveRs.) þÿseÎælies insTalled upside
dowØ (Top side iÌ ÎarÙed oØ the aÌsem±
æly rim¶ Āf it's Øot ÎarkeÓ oā the Îark
Ís oùfµceØTeR, check the louveRs iØside
´
I
I
="
-
·
-
±
,
The cap. ·Hey mĂsT slanT downă) ĄalVe
i:±
Rubber disks toRØ, folded, kinked, loose
Ii
(disks must be flÖT aØd ceØTered)ą
-
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