TM 1-1520-238-23
7-106.2
Change 9
7.31.
HYDRAULIC HAND PUMP FUNCTIONAL CHECK (AVIM) – continued
(8) Remove check valve line (18) from UTIL
ACC port (16).
(9) Install pressure line (9) on UTIL ACC port
(16).
(10) Increase pressure in line (9) to 3000 PSI.
NOTE
A normal pumping force is approximately
67 pounds at 3000 psi.
(11) Operate pump handle (19) 25 full strokes
stop to stop. Maximum external leakage 1
DROP. Maximum force to be applied at 1-1/2
inches from handle is 250 pounds.
(12) Decrease pressure to 0 PSI.
(13) Move lever (8) to fill utility reservoir position
A.
(14) Remove pressure line (9) from UTIL ACC
port (16).
(15) Remove nonpressurized hydraulic fluid sup-
ply line (17) from UTIL RES port (14).
(16) Install cap (13) on UTIL RES port (14) and
cap (15) on UTIL ACC port (16).
h. Remove hydraulic hand pump (2) from hold-
ing plate (1).
(1) Remove two bolts (3), bolt (4), and three
washers (5) from pump (2) and plate (1).
(2) Remove hand pump (2) from plate (1).
i. Remove holding plate (1) from bench or vice.
j. Inspect (QA).
END OF TASK
M04-2678-18
C
B
8
19
18
16
NON-PRESSURE LINE
9
PRESSURE LINE
UTIL
RES
PRI
RES
UTIL
ACC
FILL
5
4
B
A
9
17
13
15
14
16
5
3
1
2
19
8
M04-2678-19
