TM 1-1520-238-23
Change 7
3-235
3.61.
PARKING BRAKE ROTARY DIRECT VALVE REPAIR AND TEST (AVIM)
This task covers:
Disassembly. Cleaning. Inspection. Assembly. Test.
3.61.1. Initial Setup
Tools:
Hydraulic tool kit (item 384, App H)
Light duty laboratory apron (item 27, App H)
6.000 - 7.000-inch outside micrometer caliper (item 53,
App H)
8-inch inside caliper (item 55, App H)
Reciprocating compressor unit (item 67, App H)
Chemical protective gloves (item 154, App H)
0.0 - 10.0-pound weighing scale (item 272, App H)
0 - 25 pound spring resiliency tester (item 353, App H)
Materials/Parts:
Packing (20)
Cloth (item 52, App F)
Dry cleaning solvent (item 74, App F)
Hydraulic fluid (item 93, App F)
Hydraulic fluid (item 94, App F)
Wire (item 226, App F)
References:
TM 1-1520-264-23
Personnel Required:
68H
Aircraft Pneudraulics Repairer
67R3F
Attack Helicopter Repairer/Technical
Inspector
WARNING
Parking brake rotary direct valve is
spring loaded. Remove brake valve
cap and hydraulic valve cap carefully
to prevent injury to personnel. If injury
occurs, seek medical aid.
CAUTION
Unit preserved with MIL-L-6083 hydraulic
fluid. Flush with MIL-H-5606 hydraulic
fluid before use.
NOTE
If parking brake rotary direct valve is not
to be returned to immediate service, flush
valve with hydraulic fluid. Use hydraulic
fluid (item 94, App F). Plug ports and tag.
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M04-3081-1
