TM 5-5420-203-14
4-5. MAINTENANCE INSTRUCTIONS - CONT
a. Disassembly.
FRH hydraulic fluid may contain Tricresyl Phosphate (TCP) which, if taken internally, can
cause paralysis. Hydraulic fluid may be absorbed through the skin. If hydraulic fluid gets
on skin, wash with soap and water as soon as possible.
(1) Using cylinder rod and spanner
wrenches, remove clevis (1) from
hydraulic cylinder rod (2).
(2) Remove four screws (3) from retaining
plate (4) securing wiper ring (5) to
cylinder bushing (6). Remove and
discard wiper ring (5).
(3) Remove cylinder bushing (6) from land
ring flange (7).
(4) Remove wiper ring (8) from cylinder
bushing (6). Discard wiper ring (8).
(5) Remove eight cap screws (9) from land
ring flange (7).
(6) Remove land ring flange (7) and separate
spacer ring (10) and preformed packing
(11) from packing assembly (12)
Discard preformed packing.
(7) Remove packing assembly (12) from
launching cylinder head (13).
(8) No further disassembly of the hydraulic
cylinder is authorized at this level of
maintenance.
4-2
