TM-5-2350-378-24-P

HYDRAULIC DIAGNOSTIC CENTER (HDC) SUPPORTING ARMORED COMBAT EARTHMOVER (ACE), M9

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST

TM-5-2350-378-24-P - Page 298 of 790

TM 5--2350--378--24&P

0015 00--5

FRONT CORNER (LEFT OR RIGHT) DOES NOT RAISE IN SPRUNG OR UNSPRUNG

MODE -- Continued

0015 00

FRONT ACTUATOR PORT 9 PRESSURE TEST

Reset all HDC solenoid valves by selecting the RESET VALVES button (Figure 3,

item 2) on the HDC control box.

Have assistant start engine and move the SPRUNG/UNSPRUNG lever to the SPRUNG

mode. Read transducer T--8 (right) and T--9 (left) hydraulic pressure on the HDC dis-

play (Figure 3, item 1).

Figure 3. HDC Control Box

FRONT ACTUATOR PORT 3 PRESSURE TEST

Reset all HDC solenoid valves by selecting the RESET VALVES button (Figure 3,

item 2) on the HDC control box.

Have assistant start engine and move the SPRUNG/UNSPRUNG lever to the UN-

SPRUNG mode and SUSPENSION CONTROL lever to RAISE. Read transducer T--5

(right) and T--6 (left) hydraulic pressure on the HDC display (Figure 3, item 1).

Stop engine; relieve hydraulic pressure.