M977, M985, and M984E1 Crane Maintenance Instructions (Cont)
Remove two fittings (1) and preformed
packings (2) from housing (3).
Matchmark position of elbow prior to removal.
Remove elbow (4) and preformed
packing (5) from housing (3).
Perform step (8) if plugs are damaged.
Remove two plugs (6) and preformed
packing (7) from housing (3).
Remove safety valve (8), preformed
packing (9), and orifice (10) from
Remove preformed packing (11), backup
ring (12), preformed packing (13), and
two backup rings (14) from safety
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
Clean all metal parts in drycleaning solvent.
Inspect each part for damage.
Replace damaged parts.
steps (1) through (3) for Model A.
steps (4) through (11) for Model B.
Install preformed packing (1), preformed
packing (2), two backup rings (3), backup
ring (4), and preformed packing (5) on
holding valve (6).
Install holding valve (6) in control