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TM 07661B-14/1
APPENDIX A
(1)
Pressure gage (22) can be removed by unscrewing it from the port in valve body, using a wrench on flats
at bottom of gage
(2)
Remove roll pin (3) from handle (1) using a small drift punch.
(3)
Raise handle to open position to relieve spring tension.
(4)
Lightly tap handle pin (2) with punch to remove pin. Remove handle.
(5)
Lift roller (4) and cam (5) from handle bracket.
(6)
Remove bushings (6) from handle bracket.
(7)
Loosen locknut (8) and turn handle bracket (7) counterclockwise to remove from barrel (11). Remove
locknut.
(8)
Loosen set screw (10) in the retainer nut (9). Remove retainer nut and barrel (11).
(9)
Lift stem (12), and disc (13) from body. Disc comprised o: 5 pieces. Keep them in proper order.
(10)
Using a wrench on shoulder of seat holder (15), turn seat holder retainer counterclockwise to remove. Lift
the seat holder and retainer from valve body.
(11)
Separate the seat (16) and seat holder (15). Discard seat.
(12)
Lift spring (17) from valve body.
(13)
Remove safety nut (21), safety disc (20), and o-ring (19) from valve body. Discard the o-ring.
b.
Assembly. (figure 3-22)
(1)
Assemble safety disc (20) with new o-ring (19) into safety nut (21). Thread safety nut assembly onto spud
on body and tighten securely to a torque of 35 to 40 lb-ft.
(2)
Put spring (17) into valve bore in body.
(3)
Insert a new seat (16) into the seat holder (15). Install this assembly into center of spring (17) inside body,
square end up.
(4)
Place seat holder retainer (14) over square end of seat holder (15). Press down on retainer with sufficient.
pressure to overcome spring tension while threading retainer into body. After threads are started, use a socket wrench
on square end of seat holder to tighten retainer snugly against shoulder in body.
(5)
Put disc (13) over seal holder and seat it firmly against shoulder on holder.
(6)
Assemble stem (12) into barrel (11) and install as an assembly on the disc (13) with threaded end of barrel
up.
(7)
Install retainer nut (9) over barrel, thread into body and tighten securely.
(8)
Thread locknut (8) onto barrel.
(9)
Thread handle bracket (7) onto barrel.
(10)
Insert bushings (6) into sides of handle bracket.
(11)
Assemble cam (5) into roller and install as an assemble between ears on handle bracket. Center punch
mark on cam should be
A 3-47
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