TM 55-1730-201-12
b. Disassembly.
(5) Position the pump handle (26) in the pump
handle socket (24) and secure with the bolt (25)
and nut (29).
(1) Remove
the pivot pin (38) securing the
the pump handle socket (24) to the pump.
(6) Position the pump handle socket (24) to the
pump body and secure with the spring (27), two con-
necting links (23), two pins (22) and cotter pin
(28).
(2) Remove the cotter pin (28), spring (27), two
connecting links (23), and two pins (22), securing
the pump handle socket (24) to the pump and re-
move the socket.
(7) Install the pivot pin (38) that secures the
pump handle socket to the pump.
(3) Remove the bolt (25) and nut (29) securing
the pump handle (26) to the socket and remove the
handle.
e. Installation.
(4) Remove the tee (2), nut (34), and packing
(33) from pump body (36).
(1) Position the pump to the bracket and secure
with two bolts (37), lockwashers (32), and nuts (31).
(2) Connect the by-pass tube assembly (1) to
the tee (2).
(5) Remove the nut (39), bearing (40), packing
(42), O-ring (41) and piston (47) from the pump
body (36).
(3) Connect the suction tube assembly (4) to
the reducer (3).
(6) Remove the packing (44), seat (43), packing
(52), ball bearing (45), and spring (46) from the
piston.
(4) Connect the hose assembly (5) to the tee (2).
33. BY-PASS VALVE ASSEMBLY.
(7) Remove the reducer (3), gasket (35), plug
(48) packing (49), ball bearing (50) and spring (51)
from the pump body (36).
a. Removal.
(1) Disconnect
the return tube assembly (7,
figure 5) from the elbow (21).
c. Cleaning, Inspection, and Repair.
(1) Wash all metal parts in cleaning solvent,
Federal Specification P-D-680 and dry thoroughly.
(2) Disconnect the by-pass tube assembly (1)
from the elbow (16).
(2) Inspect the springs for fatigue or damage.
Inspect the O-rings for wear and deterioration. In-
spect
the piston and cylinder for scores and
scratches. Polish out any minor scores or scratches.
(3) Remove the two screws (17), lockwashers
(19), and nuts (20) securing the by-pass valve (18)
to the bracket.
(4) Remove the elbows (16 and 21) from the
valve.
(3) Inspect all threaded surfaces for worn or
damaged threads.
b. Cleaning, Inspection, and Repair.
(4) Replace any defective parts.
(1) Wash the valve assembly in cleaning sol-
vent,
Federal Specification P-D-680, and dry
thoroughly.
d. Reassembly.
(1) Install the spring (51) ball bearing (50)
packing (49), plug (48), gasket (35) and reducer
(3) in the pump body (36).
(2) Blow out the passages with compressed air.
(3) Inspect the valve
for broken or cracked
housing.
(2) Install the spring (46), ball bearing (45),
packing (52), packing (44) and seat (43) in the
piston (47).
(4) Replace unserviceable parts as authorized.
(3) install the piston, O-ring (41), packing (42),
bearing (40), nut (39) in the pump body (36).
(5) Replace a defective valve.
c. Installation.
(1) Install the elbows (16 and 21) in the valve.
(4) Install the packing (33), nut (34), and tee
(2), in the pump body (36).
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