PS Magazine - SEPTEMBER 1984
PS, The Preventative Maintenance Monthly
ISSUE 382
SEPTEMBER 1984
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Putting a fel boost pump into place on an OH-58 or UH±I can stretch your·
patience to the limit and leave you shaking liKe a leaF.
You worK on your bacK under the bird; the worKspace is limited; and it's
hard to see what you're doing.
²F a buddy helps you, things get even more crowded.
A slip³up can cause anything From bruised ´nucKles to a bustEd pump.
Your big problem is getting the 3±in bolt thru the sump plate and into the
Fitting. Bolt, plate and Fitting are all moving, usually in Diµ¶erent directions.
TM 55±1520±210±23±2, Para ¸0±99, says to put a ¹º±in
x
5-in guide bolt thr»
the sump plate into the Fitting. ¼t's still a tricKy maneuver. TM 55-1520±228±23±2
says even less.
There's a better way.
Latch onto three ¹º±in
x
3 V½±in bolts,
NSN 5306¾00-281¾8945. Cut the heads
oµF2 oF them. Have your support peo¿
ple weld those 2 together where the
heads were, then wÀld the third bolt to
one end, maKing a "T.Á You now haveÂ
a 7±in tool to get that pump in place.
Use three
1-in
x
3±2-in bolts,
NSN 506.00²³8´·
Lµ'¶:
•±
.
¸¹
52
Put the gasKet onto the puÃpÄ
Åhen guide the threaded eÆd oF the
tool thru the sump plate and screw it
into the Fitting.
SEP 84
Secure the pump to the plate with 12 bolts aÆd washers.
Pull the Çitting thR the sump plate hole.
Gently
unscrew the tool so the Èitting stays put.
¼nstall, From the top down, pacKing, cap, pac´ing, washer and bolt.
HuEY
Éoc´wire the cap to the bolt. Then connect the electrical wiring or air pump
hose. Torque all bolts to 65±75 lbÊin. The job's done.
Kiowa
Aline the pump and sump plate and put in 12 bolts and washers. Torque theË
to 65-75 lb-in. Then install the sump retainer and connect the wire.
uHº» F¼E½ CE¾¾¿ ÀÁ
Come to
a
Fitting Conclusion
Auxiliary Ìel cells help a Íuey go
Îrther to get the job done.
When installing the cells, you have
to get everythÏng together the right way.
¼F you get pieces together wrong, the
whole assembly is harder to put
together, Ðel FÑow is restricted and
there is more stress on the lines.
Seems li´e Òurphy has a special
Èondness Óor oÆe particular piece. ¼t's
the adapter, NSN 4730±0Ô±064-2487,
¼tem Ô0 in Õig 343, ÅÒ 55-Ô520-2Ô0±
23P-2. Better ÖaKe a loo´ at your bird's
tanKs right now.
The adapter goes with the right-hand
Èuel taÆK, between the tan× and elbow,
NSN 4730±0Ô±070-8534.
But some mechsØwith Òurphy's
helpÙput the Fitting between the checK
valve, ÚSN 4820±Û±758±9299, and the
elbow, NSN 4730±00±277-2459. That
restricts the fel Èlow.
SEP 84
53
MisTAkenly
insTAlled
.-
-
.±²³´ T
heRe!!
So chec´ the lines on your bird's auxÜ
iliary Èuel tanKs. ¼È that FittingÙor any
other partÝis out oÈ plÞce, Èix it now!
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