PS Magazine - NOVEMBER 1984
PS, The Preventative Maintenance Monthly
ISSUE 384
NOVEMBER 1984
I
I.!'
Ground-handling wheeLs fr Hueys
and Cobras have been aroUnd so long,
all the bugs have been worked out,
right?
Wrong-o! Birds and their crews still
get nasty surprises Fom wheeLs t±at ac²
cidentalLy depart the skid.
Tender loving care and reguLar PM
will keep those w±eels where they
beLong³
Make sure the wheels ´ce the rig±t
way when you're mounting them³ T±at
sounds really basicµbut some Murphys
still manage to do it bacKwards³
Remember, the ¶ixed pin goes into
the rear eyebolt and the spring·loaded
pin in t±e ¶Orward eyeboLt.
Get
that
¶¸ont
support
pin
¹Lly
engaged in the eyebolt! ºse your ¶Inger
to make sure the pin is all t±e way ex»
tended³ ¼therwise, those w±eels wiLL go
pin is
completely
extended
The groUnd wheels' ±ydraulic pump
wasn't designed to li¶t or lower a load²
ed chopper's weight³ So befre extend»
ing or lowering the wheels, get a cou½
ple o¶ buddies to pus± down on the tail
boom, taking the load o¾ the wheel
assemblies³ You¿
ii
save unnecessary
wear and tear on the puÀp seals³
Áying. T±at's bad news fr a Cobra's
1
±
²
³
´µ¶·;:¸¹º=
»
¼
rocket podÂor the unlucky mech
j
ack·
ing up the wheels³
38
NOV
±4
When lowering t±e wheels, release
the ±ydrauLic pressUre s·1·o·w-L-y³
Remember, attach and pump both
sets o¶ ground-handLing wheels at one
tiÀe. Don't put extra strain on your
bird, t±e w±eeLs and your buddies by
attaching and extending t±e w±eeLs on
one side, then the other.
Go easy wit± t±e w±eeÃs wÄen yoU
moVe t±em ¶¸om place to place³ Don't
bounce t±em aroUnd. T±at can put them
into the repair shop ´st!
EyebaLL your bird's eyeboÅts, NSN
5306-00±883²4462.
ƶ they're c±ipped,
worn, bent or cracked, repLace t±em³
Replace worn
eye bolts
•
Make regular maintenance cheÇks to
keep those wheeLs rolÃing³
Every
6
months, shoot the works with grease,
aircra¶t, general purpose³ NSN
9150±
00³944²8953
gÈts a pound can³ Éollow
the lube chart in the bird TM³
NOV
±4
39
Pamper t±at hydraulic pump³ Give it
a good going over. YoU can replace a
pooped pUmp or repair it.
Test the tires³ ƶ they're cut or worn
to the recapping point, order new ones³
I1,
ÆnÊate t±e tires to
50
PËƳ
ƶ your unit identIÌies wheels, use a
stenciL
and
paint³
Metal
stamping,
especialÃy on the wheeL rim or hub, will
lead to cracks in the w±eel³
Take a good Ãook at the rest o¶ the
wheel assembly.
Tighten loose hose
connections³
Replace
any
wheel»
mounting pin that's cracked, chipped,
broken or benͳ
Test the spring·loaded ¶ront pin fr
easy in-out action³ Crud or rust could
keep it ¶¸om seating properly³
RemeÀber the spring³ ƶ it Îels liÏe
it's lost some o¶ its zip when you Ðnger»
test it, change itÑ
Do your part,
and t±ose grounÒÓ
handling wheels will keep on rolÃing
along!
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