The unusual is "the usual" in-
country, weather-wise.
 You hase to fight dust and rain e\er)
inch of the way to keep )our ssorkhorse
in the blue.
 With the Chinook (CH-47) main
rotor blades w shipping dirt into the elec-
tronic equipment compartment, the
AN/ARC-51X UHF receiver-transmit-
ter, for one, really takes it on the chin.
The blower filter gets packed with dirt
right-quick.


 EVERY
 DING DON

 i: 1 A SPIT AKN'SHINOLA '
 TE OI HETARTHE

 MONSOONS HIT--OR
 !, ., IT GETS DRY AND DUSTY
2W ,... WHAT KINPA TOUR
 SDI. I DRAW ANYHOWF


 MAN,


and loose dirt from your radio equip-
ment and shelves by using a clean, lint-
free cloth. Use cleaning compound to
remo e grease and ground-in dirt.

 DIRT HERE
 GRINDS
 INTO
 CONTACTS


 CLEAN HYDRAULIC SYSTEM-A MUST
 Crewchiefs-always keep a clean,
lint-free cloth in your tool box. It comes
in mighty handy for cleaning all the
actuator pistons and SAS links.
 \\iping dirt and sand off the pistons
once in awhile gill keep grit from
cutting into the actuator seals, causing
ruined seals, leaks and a contaminated
hydraulic system.


.- ..10.1 I-


 'Course, the periodic PM checks spelled out in TM 11-1520-209-20 (Nla. 65) Dirt gets under the co'er and grind,
 call for radio-types to eye the filter for cleanliness every 200 hours. into the contacts as the drum turns
 If the bird is operating in a dust bowl, tho, better move this chick up to the around can shorten the life of the
 intermediate. The same goes for other set checks, depending on) our experience. control. A blast of compressed air
 A little compressed air (low pressure) on the filters should get rid of the dirt should get rid of the dirt and grit.
 and give you cool-running sets. Fact is. 3ou want to go all-out %ith
 Don't forget the control panel, C-6287/ARC-51BX, on the lo\ cr console. the cleaning bit. Get rid of all moisture
 44 45


KEEP DIRT
OFF PISTONS


FILTER
CLEAN?


c~