PS Magazine - APRIL 1975

PS, The Preventative Maintenance Monthly

ISSUE 269

APRIL 1975
PS Magazine - APRIL 1975 - Page 5 of 35
CllllL
S
IE
111±( 19
²l³l´le
²lµ¶ CH
The closed breecH scavenge system (CBSS) has a definite purpo±e in life. Its
compressed air bLows junk out of ²he breech after firing³ Bu², this handy sy±²em has to
´e carefuLly maintained³
µheck oiL LeveLs every day³ To deveLop
3000
PS¶· t¸e compressors have ²o run Like a
Texas jack rabbi²-pre²²y durn quick³ ¶f the oiL leveL's not Just righ², ²He compre¹sors
burn
u²³ When you add Oil, be sure itºs the syn²he²ic kind calLed for in t»e
TM
- mIL±L²23699.
¶f the can was opened earLier, make sure tHe oiL is cLean³
¼Ere's the oiL:
8½oz can: NSN
9150³00´985µ7099
1µqt
can¾ ¿SN
9150·00³180¸6266
µHeck ou² ²he oiL leveL in the direc²À
drive gear box reguLarLy³ When the sight
gage is removed, oiL wiÁL spÂÃÄ ou² if tHe
compressor seaLs are bLown³
Drain ²ha² s²uff ou² of the gear boxÅi²ºs
con²aminated
wi²H
compreÆsor
ÇiLÈ
RepLace the gear box oiL
(MIL¹L´2104º)
ÉAfter ²Êe compressor seaLs are repairedË
fiLl the compressor wi²h
MIL»L¼23699º
Ìhe cheMicaL dryer in the µBSS mus²
±
wHiLe
youÍre working on the sys²emÎ
When cÏanging the dryer fiL²er, the filter
shouLd no² be ou² of ²he package more
than
5
minutes before being instaLLed³
sc
l/·¸
TÐe µBSS can provide a ±urprise for
ÑHÒ unwaryÓ When the sy±tem is sÔut
dowÕ, aLL
3000
PS¶ of that compressed air
i± s²ilL in the system³ ALwaYs depressurize
tHe system before disconnec²ing any air
Lines³
The injec² pLungers a²²acHed ²o ²he
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