TM 55-4920-394-13&P
CHAPTER 4
AVIATION INTERMEDIATE MAINTENANCE INSTRUCTIONS
SECTION I. PREPARATION FOR USE, STORAGE OR SHIPMENT
SECTION II. REPAIR INSTRUCTIONS
4-10. General.
4-11. This Section contains essential repair and replacement instructions for using personnel. This includes
replacement of high pressure, low pressure fill system hydraulic filter elements and repair of hydraulic and
electrical components.
4-12.
Component Removal And Installation .
4-13. When it is necessary to remove any component of the test stand for repair or overhaul purposes,
observe the following precautions and general practices:
a.
Make certain that all hydraulic pressure is completely relieved before removing hydraulic system
components.
b.
Do not attempt to remove or repair any electrical component unless input power cable is
disconnected from ac power source.
c.
If it is necessary to remove system lines connected to hydraulic components, loosen fitting at end
of each line, and, if applicable, remove attaching parts securing component to structure. Do not
bend system lines on removal as thread damage or misalign ent may result. Cap or plug open
m
lines with protective closures, Military Specification MIL-C-5501, or equivalent.
CAUTION
Do not use adjustable jaw-type wrenches on hydraulic tube fittings.
Slippage or incorrect adjustment of wrench may result in damage to
hexagonal fitting surfaces.
d.
When removing electrical components, disconnect electrical leads from terminals and tag each
lead for ease of identification during reassembly.
e.
After performing the necessary repair or overhaul, install components in test stand in the reverse
order of removal.
f.
After reinstalling components, perform a functional test as described in Section III.
4-1
