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To avoid injury to personnel, do not tighten or loosen hydraulic fittings when system
is pressurized.
Lower the boom to stowed position before doing any maintenance on hydraulic
system.
Wipe up any spilled hydraulic fluid to prevent injury to personnel.
Install covers on open hydraulic ports, tubes, and hoses immediately after disconnect-
ing them to keep dirt out of hydraulic system.
NOTE
Gain access to hydraulic power supply fittings through the hull well.
1 Disconnect flow regulator metal tube assembly (1) from tube nipple (2).
2 Disconnect flow regulator metal tube assembly (1) from tube elbow (3).
3 Loosen tube locknut (4) on tube elbow (3). Remove tube elbow with tube locknut, packing
retainer (5), and preformed packing (6) from impact wrench control (7).
4 Remove preformed packing (6), packing retainer (5), and tube locknut (4) from tube elbow (3).
5 Disconnect spade control valve metal tube assembly (8) from tube elbow (9).
6 Disconnect spade control valve metal tube assembly (8) from valve (10).
7 Loosen tube locknut (11) on tube elbow (9). Remove tube elbow with tube locknut, packing
retainer (12), and preformed packing (13) from impact wrench control (7).
8 Remove preformed packing (13), packing retainer (12), and tube locknut (11) from tube elbow
(9) .
2-791
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