TM 9-2320-279-34-3
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M977, M985, and M984E1 Crane Maintenance Instructions (Cont)
Remove six plugs (51) and preformed packings (52).
Remove six fittings (53) and preformed packings (54).
Remove two fittings (55) and preformed packing (56).
Remove two fittings (57) and preformed packing (58).
Remove three plugs (59) and preformed packing (60) from
valve body (37).
NOTE
l A standard 4-40x2 screw will thread into the end of the shuttle valves to aid in
removal.
l Valves may separate. Replace valves if separated.
l Both valve body shuttle valves are removed the same.
Remove plug (61), preformed packing (62), and shuttle valve (63).
NOTE
Preformed packings and backup ring may stay in body.
Remove two preformed packings (64) and backup ring (65).
NOTE
Both shuttle block valves are removed the same.
Remove two screws (66), shuttle block (67), and three preformed packings (68) from valve
body (37).
Remove plug (69), preformed packing (70), shuttle valve (71), two preformed packings (72), and
backup ring (73).
17-138.17
