MWO-5-2350-262-35-4

MWO 5--2350--262--35--4

4--2

SECTION I PREPARATION FOR MODIFICATION

WARNING

High pressure is present in the M9 hydraulic system. Do not disconnect any hydraulic

system component unless hydraulic system pressure has been relieved. Ensure each of

the hydraulic control levers is moved several times through all positions and the hydraulic

tank dipstick is slowly loosened to relieve pressure. After hydraulic pressure has been

relieved, wait at least four (4) minutes before disconnecting any hose or fitting. Failure to

comply may result in severe injury to personnel.

WARNING

Do not work under vehicle unless hull is blocked and apron lockpins are installed. Failure

to comply may result in severe injury or death to personnel.

CAUTION

All exposed electrical contacts and connectors should be capped, protected, or sealed to

prevent damage.

CAUTION

Cap or plug all oil ports and ends of hoses and tubes when oil hoses or tubes are

disconnected or removed to prevent contamination. Failure to comply may result in

damage to equipment.

NOTE

Drain oil and collect into suitable containers when hoses and tubes are disconnected or

removed.

NOTE

Schematic diagrams for the M9 ACE vehicle hydraulic system for both the unmodified

vehicle and the HDC modified vehicle are included on FO 3--1, 1 of 3 through 3 of 3 for

reference, as necessary.

NOTE

As applicable throughout these procedures, remove and discard old band markers and

install new band markers as appropriate, in accordance with underside band marker kit,

12496969.

NOTE

Use teflon tape when connecting straight pipe fittings.

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