TM 55-2210-224-34
4-13. 6-NFR DISTRIBUTING VALVE (cont)
ASSEMBLY
WARNING
Valve assemblies are under a spring load. Use caution during assembly procedures so that no
parts fly out, causing injury to personnel.
26.
Check that choke plugs (53), (54), (55) and (56) are installed in their proper locations. Install pipe plug (51) in body
(52). Install O-ring (50) on adapter (49).
27.
Install adapter (49), gasket (48), strainer (47), screen (46), and safety valve (45) in body (52).
28.
Install three gaskets (44)and cover (43) and secure with four bolts (42).
29.
Assemble large diaphragm piston assembly (33) by the following:
a.
Install O-rings (40) and (39) on piston stem (41).
b.
Install piston spring (38) and piston head (37) on piston stem (41).
c.
Install diaphragm (36) and follower (35) on piston head (37) and secure with nut (34).
30.
Install large diaphragm piston assembly (33) in body (52).
31.
Install gasket (32) and bottom cover (31) and secure with five bolts (30).
32.
Install gasket (29), O-r
ing (28), and gasket (27) on slide valve stop (26).
33.
Position slide valve stop (26) on body (52) and install four bolts (25).
34.
Assemble equalizing piston assembly (14) by the following:
a.
Install diaphragm (23) and follower (22) on piston (24) and secure with nut (21). Tighten nut to 30 lb-ft (40
N.m).
b.
Install graduating valve (19) on slide valve (18) and install spring (20) in recess of graduating valve.
c.
Install piston (24) on slide valve (18). Check that spring (20) enters recess of
piston stem.
d.
While holding slide valve (18) in position on piston (24), install spring (17) on stem of piston. Secure with
two spring pins (16) and two lock pins (15).
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