PS Magazine - MAY 1972
PS, The Preventative Maintenance Monthly
1972 SERIES, ISSUE 234
MAY 1972
High recip engine oil consumptIon is a good in-
dication that the lab shoULD look into high±wear
rates in The ²pper cyl³nder area when eyeIng yoUr
sample.
´f yoU're about to change a cyl³nder due to high
oil cons²mption and low compression, send an en-
sample to the
lab
before
you
make
the
USAPHS
AIRCRA1T
TH-ssA
67-17002
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NweR 2 Cy·inder ha± ·o¸ compre¹±Ion anº exce±»¼ve
o½· con±uMpt¼on.
Up with anOther sample taken
Block 7dµ cylinder replaced, gets checKed and your explanat³on again
g¶s in the remarkS column becausE block 6j also gets checkeD.
Complete the ·A Form 3253
a¸ter
a maintenance
operat³onal
check or test flight.
For other po³nters eye the poop ³n ¹B 55º6650±300»15 (AUg 70)
on oil analysis. Para
9
spells oUt the conditIons Under which special
samples are sent to the oIl lab
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In
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SP4 Haro·d
John±on
8
¾ec 71
2
cy·¼nder changed becau±e of exce±±¼Ve·Y ¿orn
SaÀp·e Áaken after run²uÂÃ
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¹½ere ³s no block to check on t½e 3253
¸orm When taking a sample ¸olloWing an
aircra¸t acc³dent, tho, so¾check block 6J
³n sect³on 6 and g³ve ¿he reason ¸or tak³ng
the sample in the remarks section.
¹he
same
deal
goes for
an
inflIght
failure, overboosÀ or overspeeD anD any
abnormal flight conDIt³on Which may bE
the resuÁt o¸ a mal¸unctIon of oIl lubr³Â
cated Ãarts, or any operat³on that may
have damaged an oIl lubr³cateD system.
Check
blocK
6J
and
Use
the
remarks
sec¿ionÄ
Also, when tak³ng a routine turbIne
engÅne oil sample every 12! hrs, check
block 6a, wh³ch ³s also used for a rout³ne
25Æhr sample.
ġĢģĤĥ
Ħ
Yessir±e±e±e, f³ll out the ·A Form 3253
completely, manÇ ¹he lab wIll t½en be
able to keep you tuneD ³n to t½e bIg p³cÈ
ture.
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