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 258 of 790
TM 5--2350--378--24&P
0013 00--33
FRONT CORNER (LEFT OR RIGHT) RAISES IN SPRUNG, BUT NOT UNSPRUNG MODE --
Continued
0013 00
CIRCUIT 11 HOSES AND LINES BLOCKAGE CHECK
Check for blockage in all hoses and lines applicable to corner of vehicle which will not raise.
Figure 17. Circuit 11
Components, Hoses and Lines
Figure 18. HDC Control Box
SOLENOID VALVE V2/V3 FLOW TEST
Reset all HDC solenoid valves by selecting the RESET VALVES button (Figure 18,
item 1) on the HDC control box.
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.
NOTE
Have suitable container ready to catch oil.
Disconnect right forward manifold line 11 for solenoid valve V2.
Disconnect left forward manifold line 11 for solenoid valve V3.
Start engine and have assistant move SPRUNG/UNSPRUNG lever to UNSPRUNG.
Observe flow.
Stop engine; relieve hydraulic pressure.
Reconnect right forward manifold line 11 for solenoid valve V2.
Reconnect left forward manifold line 11 for solenoid valve V3.
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