TM 9-2320-279-34-3
M977, M985, and M984E1 Crane Maintenance Instructions (Cont)
NOTE
Do step (7.1) for Model A cylinder.
(7.1)
Remove spacer (19.1) from rod (14).
(8)
Remove backup ring (21) and
preformed packing (22) from
head (23).
(9)
Remove head (23) from rod (14).
(10)
Remove backup ring (24), seal (25),
and wear ring (26) from head (23).
(11)
Remove retaining ring (12) from
rod (14).
(12)
Remove wiper ring (27) from retaining
ring (12).
b. Cleaning/Inspection.
WARNING
Adhesives, solvents, and sealing compounds can burn easily, can give off harmful
vapors, and are harmful to skin and clothing. ‘lb 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 drycleaning solvent.
(2)
Inspect each part for damage.
(3)
Replace damaged parts.
(4)
Check cylinder bushing end. If diameter is larger than 2.015 in. (51.18 mm), replace bushing.
(5)
Check rod end bushing (M984E1 only). If diameter is larger than 1.515 in. (38.48 mm), replace
bushing.
Change 3
17-73
