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TM 55-1520-240-23-6
7-6
REPLACE ROSAN ADAPTERS AND REDUCERS
(Continued)
7-6
9.
Remove Rosan fitting (6) from port (8) as follows:
a.
Select proper wrench (10) from table 1.
b.
Engage wrench serrations with those of
adapter (9).
c.
Turn wrench (10) counterclockwise to
unscrew fitting (6) from port (8).
10.
Remove fitting (6) from port (8).
NOTE
Rosan fittings cannot be repaired
and must be replaced if threads are
damaged or other defects are found.
11.
Inspect serrations (11) around port (8) for
condition. If damaged, replace component.
12.
Plug port (8) to prevent fluid contamination.
13.
Inspect Rosan fitting (6) for cleanliness.
14.
Ensure lockring (1) is not cocked on fitting (6).
15.
Ensure threads and fitting serrations (9) are not
damaged.
16.
Remove old packing (12) from fitting (6).
17.
Inspect packing (12) contact area. No damage
is allowed.
18.
Inspect metal-to-metal sealing surfaces located
immediately above packing contact area for
scratches or rough spots. None are allowed.
INSTALLATION
19.
Select packing installation tool (13) from table 1,
and packing (12) from table 2.
20.
Place packing (12) on tool (13). Place installation
tool over the port thread of fitting (6).
21.
Submerge tool (13) and packing (12) in hydraulic
fluid (E199).
22.
Slide packing (12) over tool (13) and onto fitting
(6). Ensure that packing (12) is not twisted and
is properly seated in groove (5).
23.
Remove packing installation tool.
7-48
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