TM 1-1520-238-23
Change 7
7-502.1
7.130A. SURGE VALVE CLEANING
7.130A.1. Description
This task covers:
Removal. Disassembly. Cleaning. Inspection. Assembly. Installation. Testing.
7.130A.2. Initial Setup
Tools:
Aircraft mechanic’s tool kit (item 376, App H)
Light duty laboratory apron (item 27, App H)
Industrial faceshield (item 129, App H)
Chemical protective gloves (item 154, App H)
3/16-inch flat tip screwdriver bit (item 31, App H)
3/16-inch hexagon x 1/4-inch drive screwdriver socket
wrench attachment (item 322, App H)
30 - 150 inch-pound 1/4-inch drive click type torque
wrench (item 435, App H)
0 - 30 inch-pound 1/4-inch drive dial indicator torque
wrench (item 445, App H)
Materials/Parts:
Packing (3)
Packing with retainer (2)
Alcohol (item 25, App F)
Damping fluid (item 69, App F)
Petrolatum (item 138, App F)
Wire (item 222, App F)
Personnel Required:
67R
Attack Helicopter Repairer
67R3F
Attack Helicopter Repairer/Technical
Inspector
References:
TM 1-1520-238-T
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
2.2
Access doors T250L, T250R, T290L,
T290R, and L325 opened
2.83
Fold catwalk
7.133
Surge valve exhaust hose removed
7.132
Surge valve pressure hose removed
CAUTION
Removal of surge valve is for access pur-
poses to clean valve only. SDC and surge
valve are a mated pair. Reinstall same
surge valve only. Failure to do so could
result in damage to SDC.
GO TO NEXT PAGE
M04-5219-1
