TM 1-1520-238-23
Change 1
7-103
7.31.
HYDRAULIC HAND PUMP FUNCTIONAL CHECK (AVIM)
7.31.1. Description
This task covers:
Functional Check.
7.31.2. Initial Setup
Tools:
Hydraulic tool kit (item 384, App H)
Light duty laboratory apron (item 27, App H)
1 1/8-inch x 1/4-20 shear bolt (item 40, App H)
1 9/16-inch x 1/4-20 shear bolt (item 41, App H) (2)
1/4-inch tube cap (item 57, App H)
3/8-inch tube cap (item 58, App H) (3)
100-milliliter graduated laboratory cylinder (item 105,
App H)
Industrial faceshield (item 129, App H)
Chemical protective gloves (item 154, App H)
Hydraulic system components test stand (item 359,
App H)
Flat washer (item 403, App H) (3)
Holding plate, 7-3631MF002 hydraulic hand pump
(Figure D-450, App D)
Personnel Required:
68H
Aircraft Pneudraulics Repairer
67R3F
Attack Helicopter Repairer/Technical
Inspector
CAUTION
To prevent moisture and foreign matter
from damaging the hydraulic system, be
sure to install protective covers on all
lines, ducts, ports, tubes, and connectors
immediately after removing.
7.31.3. Functional Check
a. Install holding plate (1) on a suitable bench or
vise. Use holding plate (1) (Figure, D-450, App
D).
b. Install hand pump (2) on holding plate (1).
(1) Align hand pump (2) with holding plate (1).
(2) Install two bolts (3) and bolt (4) through three
washers (5), and pump (2) in plate (1). Use
two 1 9/16 x 1/4-20 bolts (3) and one 1 1/8 x
1/4-20 bolt (4).
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