PS Magazine - MARCH 1986
PS, The Preventative Maintenance Monthly
ISSUE 400
MARCH 1986
Leaks in smoke generator fuel lines and fittings can cause a fire in the
engine compartment. And unless you mechs eyeball the lines and fittings
for leaks every chance you get, the next smoke your friendly crew sees may
not be from the smoke generator. Metal fatigue and vibrations
crack or break fuel tUbes and fittings± Yo²³u
S?ir
-
LI±²
-
l±v
'
need to check them out´ !long with
µ
mounting clamps, for leaks or
wear every time the rear
deck is re¶oved.
Make sure the fittings
·
are tight
(hand¸tight plus a quarter¸turn).
Replace any parts that are da¶aged
or leaking. Tighten clamps so the
fuel tubes can't ¶ove in the clamps.
2
Lines and fittings
tight?
MAR 86
S¹ar¹ ¹he engIne
and tUrn on the
smoke generator
for
30
seconds.
Look for leaks a¹
tees, elbowsº QuIck
dIsconnects and
fI¹¹Ings as you
kneel on ¹he spon»
son. ¼f you spot a
leak, shUt dowN
and rep½ace bu¶
par¹s. ¼f you Don¾¹
see leaks DUring
the tes¹, look for
;
'
SmOKE
GeNtr.T±
Turn on
for 30
·
seconDs
¹he¶ as ¹he engINe cools. Replace
leakIng Par¹s and run ¹he ¹es¹ agaIn.
THen ½ook oVer ¹he drIp raIl at the
rear bO¹¹o¿ eDGe of ¹he exhaust
dUc¹. ¼f I¹¾s mIssInG or da¶aged,
reP½ace I¹. ÀtherwIse fUel leakIng
MAR 86
²
Eyeball tHe
exhaust
duct seal!
slI¹s. That Da¶age wIll le¹ hot exhaus¹
Gases blow back ¹owarD ¹he fuel
¹Ubes aNd caUse a fIÁe If they¾re leak»
Ing. ¼f yoU spo¹ ¿essed Up Duc¹ seals,
rep½ace ¹he¶.
These s¶oke generator checks
¶us¹ also be done at every se¶ian»
Nua½ service before ¹he roaD test.
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