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 TM
5-2420-224-34
CRANE
EXTERNAL
END
EXTENSION
CYLINDER
REPAIR
(CONT)
7.
REMOVE two counterbalance VALVES (15)
from housing (2).
REMOVE and DISCARD backup RING (16),
8.
PACKING (17), backup RING (18), PACKING
(19), backup RING (20), and PACKING (21)
from each counterbalance valve (15).
NOTE
A p p l y coat of lubricating oil to
packings, O-rings, and seals prior
to assembly.
1.
INSTALL new SEAL (1), new WIPER (2), new
backup RING (3), and new O-RING (4) on
head (5).
20-209
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