TM 1-1520-238-23
7-24
7.6.
PRIMARY HYDRAULIC PUMP RETURN HOSE REPLACEMENT
7.6.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
7.6.2. 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)
1 & 1 1/8-inch open end wrench (item 417, App H)
Materials/Parts:
Hydraulic fluid (item 92, App F)
Personnel Required:
67R
Attack Helicopter Repairer
67R3F
Attack Helicopter Repairer/Technical
Inspector
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
2.2
Access panel L200 removed
7.3
Primary hydraulic system vented
7.6.3. Removal
a. Remove primary hydraulic pump return hose
(1) from union (2).
(1) Place rags under hose (1) to catch hydraulic
fluid spills.
(2) Hold union (2). Remove nut (3). Use open
end wrench.
b. Remove hose (1) from reducer (4).
(1) Hold reducer (4). Remove nut (5). Use open
end wrench.
(2) Remove and discard hose (1).
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