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 232 of 790

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

0013 00--7

FRONT CORNER (LEFT OR RIGHT) RAISES IN SPRUNG, BUT NOT UNSPRUNG MODE --

Continued

0013 00

Figure 4. HDC Control Box

SYSTEM PRESSURE TEST -- CONTINUED

NOTE

S

If right corner will not raise in UNSPRUNG mode, check 13L circuit

using the right wheel control.

S

If left corner will not raise in UNSPRUNG mode, check 13R

circuit using the left wheel control

Start engine, move ejector forward, engage ejector lock.

Stop engine, and relieve hydraulic pressure.

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

SUSPENSION CONTROL lever to RAISE.

To read 13R circuit pressure, read transducer T--3 hydraulic pressure on the HDC

display (Figure 4, item 1).

To read 13L circuit pressure, read transducer T--4 hydraulic pressure on the HDC

display (Figure 4, item 1).

Move SUSPENSION CONTROL lever to NEUTRAL.

Stop engine; relieve hydraulic pressure.