TM 5-4930-244-14
CAUTION
DO NOT mount the cylinder in the vise as the pressure of the vise jaws can distort
the cylinder.
(10)
Remove the pump casting (5) from the vise and clamp the valve base (15) in the vise.
(11)
Using a strap wrench (or a pump wrench if necessary), unscrew the cylinder (8).
(12)
Remove o-ring (16), stop nut (17), valve base (15), washer (18), and stud (19) from cylinder (8). Remove valve
base (15) from the vise.
(13)
Unscrew stop nut (20) from rod and stop assembly (21).
(14)
Remove plunger (22), and flat washer (23) from rod and stop assembly (21).
(15)
Clean the air cylinder assembly (24) and inspect it for a smooth bore.
(16)
Check the conical spring (25) which is part of cylinder (8) for looseness or breakage.
(17)
Unscrew adapter assembly (26) from air cylinder assembly (24), removing o-ring (27), v-block packing (28) and
backup washer (29) from adapter assembly (26).
(18)
Remove the three elastic stop nuts (30), three aluminum gaskets (31), three screws (32), three spacers (33), and
seal plate (34).
(19)
With wrench, hold the piston assembly (11) with the flats at the top and remove adapter (35).
(20)
Remove washer (36), piston packing (37), washer (38) and washer (39).
(21)
Remove spring (40), spacer (41), washer (42), and copper crush gasket (43). Remove o-ring (44) from adapter
(35).
5-5
