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 TM 55-1905-222-14
MAINTENANCE OF HYDRAULIC STEERING SYSTEM
5-31 REPLACE HELM UNIT.
This task covers.
a. Removal
b. Installation
INITIAL SETUP
Tools
Equipment Conditions
Tool Kit, Mechanic's Rall
Engine shut down
and Marine
Hydraulic steering system
drained of oil at helm unit
Torque Wrench
General Safety Instructions
Ensure that hydraulic pressure in
the system is relieved before
working on system
REMOVAL
WARNING
The fluid pressure In the system must be released prior to
servicing the pump or other parts to prevent possible injury
to personnel or damage to equipment.
REMOVE HELM UNIT
a.
Remove capnut (1).
b.
Remove steering wheel (2) and key (3).
c.
Remove bolts securing access cover.
d.
Remove access cover and cover gasket.
e.
Disconnect the four hoses (4) from helm unit
Cap open ends.
f.
Remove four mounting bolts (5).
g.
Remove helm unit (6).
h.
Remove control unit (7).
5-78
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