b.
c.
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
TM 9-2320-279-34-3
M977, M985, and M984E1 Crane Maintenance Instructions (Cont)
Remove nut (13) from rod (12).
Remove wear ring (14), two piston rings (15),
preformed packing (16), and wear ring (14).
Remove piston (17).
Remove backup ring (18), preformed
packing (19), and backup ring (18).
Remove preformed packing (20)
and backup ring (21).
Remove head (22) from rod (12).
Remove wear ring (23), and
seal (24) from head (22).
Remove retaining ring (10) and
wiper ring (25) from rod (12).
Cleaning/Inspection.
WARNING
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.
(1) Clean all metal parts in dry cleaning solvent.
(2) Inspect each part for damage.
(3) Replace damaged parts.
Assembly.
(1) Install wiper ring (1) in retaining ring (2).
(2) Install retaining ring (2) on rod (3).
(3) Install wear ring (4) and seal (5) in head (6).
(4) Install backup ring (7) and preformed packing (8) on
head (6).
(5) Install head (6) on rod (3).
17-175
