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 140 of 790
TM 5--2350--378--24&P
0009 00--7
APRON WILL NOT RAISE -- Continued
0009 00
VALVE V17 TEST.
Reset all HDC solenoid valves by selecting the RESET VALVES button (Figure 4, item 5)
on the HDC control box.
Wait for transducer T--1 hydraulic pressure on the HDC display (Figure 4, item 1) to drop
below 500 psi (3,447 kPa).
Us
ingLINEUPorLINEDOWNbutton(F
igure4,item3),se
lectV17ontheHDCd
isp
lay
(Figure 4, item 2). Close V17 on the HDC display (Figure 4, item 2) by selecting the
CHANGE POSITION button (Figure 4, item 4) on the HDC control box.
Have assistant start engine (if engine not already running) and move APRON CONTROL
lever to UP position (RAISE). Read transducer T--1 hydraulic pressure on the HDC dis-
play (Figure 4, item 1).
Stop engine; relieve hydraulic pressure.
Reset all HDC solenoid valves by selecting the RESET VALVES button (Figure 4, item 5)
on the HDC control box.
Figure 4. HDC Control Box
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