TM 9-2320-279-34-3
M977, M985, and M984E1 Crane Maintenance Instructions (Cont)
17-28.2. LEFT HAND CONTROL VALVE BODY REMOVAL/REPAIR/INSTALLATION (M984E1)
c. Cleaning/lnspection.
WARNING
(1)
(2)
(3)
(4)
Adhesives, solvents, and sealing compounds can burn easily, can give off harmful
vapors, and are harmful to skin and clothing. To avoid injury or death, keep away
from open fire and use in well-ventilated area. If adhesive, solvent, or sealing
compound gets on skin or clothing, wash immediately with soap and water.
Clean all metal parts in dry cleaning solvent.
Inspect all parts for damage.
Replace damaged parts.
Replace centering spring if under 0.940 in. (23.0 mm).
d. Assembly.
(1) Install two preformed
packings (1) and backup
ring (2) on shuttle valve (3).
(2) Install shuttle valve (3),
preformed packings (4), and
two plugs (5) in valve
body (6).
(3) Install two preformed
packings (7) and plugs (8).
(4) Install preformed
packing (9), plug (10), two
preformed packings (11),
and plugs (12).
(5)
(6)
(7)
Install seat (13), spring (14), seat (15),
and screw (16) on spool (17).
Install spool (17) in valve (18).
Install preformed packing (19), cap (20)
with four screws (21).
17-138.4
