TM 9-2320-279-34-3
M977, M985, and M984E1 Crane Maintenance Instructions (Cont)
c. Cleaning/lnspection.
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(1)
(2)
(3)
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.
Clean all metal parts in dry cleaning solvent.
Inspect each part for damage.
Replace damaged parts.
Inspect stator thickness. If stator is under 0.225 in. (5.71 mm), replace stator.
Inspect stator thickness. If stator is under 0.118 in. (2.99 mm), replace stator.
Inspect disc thickness. If disc is under 0.210 in. (5.33 mm), replace disc.
Inspect spring for length. If length is under 0.938 in. (23.8 mm), replace
d. Assembly.
Install backup ring (1) and
preformed packing (2) in
piston (3).
Install head (4) on piston (3).
Install two preformed
packings (5) and backup
rings (6).
spring.
NOTE
On M985, leave one hole empty between every two
springs.
(4) Install piston head assembly (4) and six springs (7) in
brake (8).
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.
(5) Apply pipe thread sealing compound, and install elbow (9).
17-37
