· High oil pressure is present in the M9 ACE hydraulic system. Do not disconnect any
hydraulic system component unless hydraulic system pressure has been relieved. After
hydraulic system has been relieved, wait at least four minutes before disconnecting any
hose or fitting. 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. Failure
to comply may result in severe injury or death to personnel.
· Do not work under vehicle unless hull is on jack stands and apron lockpins are installed.
Failure to comply may result in severe injury or death to personnel.
· All removal steps are accomplished through access under vehicle.
· Tag all hydraulic lines and wiring harness leads being disconnected to assist in
Remove wiring harness W3 connectors P4, P6, P7, P8, and P18 (Figure 1, Item 1) from five two-way valves
V4, V6, V7, V8, and V18 (Figure 1, Item 2) on aft manifold (Figure 1, Item 6).
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.
Remove six hydraulic hoses (Figure 1, Item 3) from aft manifold (Figure 1, Item 6).
Remove three hexagon head cap screws (Figure 1, Item 4), three flat washers (Figure 1, Item 5), and aft
manifold (Figure 1, Item 6) from vehicle. Discard cap screws.