TM 1-1520-238-23
Change 1
7-101
7.30.
HYDRAULIC HAND PUMP CHECK VALVE REPLACEMENT (AVIM)
7.30.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
7.30.2. Initial Setup
Tools:
Hydraulic tool kit (item 384, App H)
Light duty laboratory apron (item 27, App H)
Industrial faceshield (item 129, App H)
Chemical protective gloves (item 154, App H)
10 - 50 inch-pound 1/4-inch drive click type torque
wrench (item 434, App H)
Materials/Parts:
Packing (2)
Retainer (2)
Hydraulic fluid (item 92, App F)
Wire (item 230, App F)
Personnel Required:
68H
Aircraft Pneudraulics Repairer
67R3F
Attack Helicopter Repairer/Technical
Inspector
Equipment Conditions:
Ref
Condition
7.29
Hydraulic hand pump selector lever re-
moved (if required)
NOTE
This task is typical for any of the five
check valves on the hydraulic hand
pump. Access to the utility accumulator
check valve requires removal of the
pump selector lever.
7.30.3. Removal
a. Remove check valve (1) from pump manifold
(2).
(1) Remove lockwire from valve (1).
(2) Remove valve (1).
(3) Remove and discard packings (3) and (4) and
two retainers (5).
(4) Remove spacer (6) from valve port (7).
(5) Remove and discard packing (8).
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