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TM 5-4210-220-12
4-18. PUMP, PIPING, AND VALVES-Continued
DISASSEMBLY
(1)
Remove the three capscrews (1) and lockwashers (2) that retain the actuator cylinder body (3) to
the bracket (4).
(2)
Separate the actuator from the bracket. Retain the coupling and reducer which are linkage
components between the ball valve and actuator.
(3)
Remove three nuts (5), lockwashers (6) and pull tie rods (7) from end cap (8).
(4)
Separate the end cap (8) from the cylinder (9) and remove the transfer tube assembly (31).
(5)
Pull the cylinder (9) away from the cylinder body (3) until it separates from the piston (25).
(6)
Remove two gaskets (30), one on each side of the cylinder (9).
(7)
Lightly clamp cylinder body (3) in a vise.
(8)
Remove the retaining ring (10), indicator pointer (11), and the pointer bearing (12)/
(9)
Support the piston end of connector plates and, lightly tap the top of the driver (17) until it drops
through the cylinder body (3).
(10)
Remove the acorn nuts (34), stop screw seals (35), and stop screws (36) from the cylinder body (3).
(11)
Remove retaining ring (18) from driver (17).
(12)
Remove the back up washer (16), driver seal retainer (15), and lower drive seal (14) from the driver (17).
(13)
Remove upper driver seal (13) from the cylinder body (3).
(14)
Remove cylinder body (3) from the vise.
(15)
Remove piston bearings (27 and 29) from the piston (25).
(16)
Remove piston seal (28) from the piston (25).
(17)
Remove pivot pin retainer (23) and pivot pin washer (22) from the pivot pin (21). Pull the pivot pin
from the connector plates (19) and remove the driver arm (20).
(18)
Remove piston pin (26) from piston (25). Then remove the connector plates (19) and the connector
plate spacer (24) from the piston.
4-249
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