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 TM 55-1905-222-14
6-14
REPAIR HELM UNIT (Continued).
2.
DISASSEMBLE SHAFT AND FLANGE ASSEMBLY.
a.
Remove retaining rings (5 and 6), bearing (7)
and retaining ring (8).
b.
Remove shaft (9) from tube and flange unit
(10).
3.
DISASSEMBLE CONTROL SECTION.
a.
With control section supported in a vise, loosen
four capscrews (11) and remove mounting plate
(12).
b.
Remove oil seal (13) and bushing (14);
remove preformed parking (15) from the face of
the housing (16).
CAUTION
When removing the spool and sleeve assembly, be extremely careful to prevent
these parts from binding, as they are very closely fitted. They must generally be
rotated slightly as they are withdrawn.
c.
Place housing (16) on a solid surface with port
face down, so that it can be held securely,
remove control spool (17) and control sleeve
(18) from housing (16).
d.
Push inside lower edge of control spool (17)
so that spool moves toward splined end (19)
from control sleeve (18).
e.
Remove centering spring set (20) out of spring
slot in control spool (17).
6-74
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