TM-5-2350-378-23-P
ARMORED COMBAT EARTHMOVER (ACE), M9; HYDRAULIC DIAGNOSTIC CENTER
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST
JUNE 2012
TM-5-2350-378-23-P - Page 326 of 644
APPARENT HYDRAULIC DIAGNOSTIC CENTER (HDC) SYSTEM PROBLEM - Continued
STEP
16.
Check for 28 VDC at master relay (input) side of HDC circuit breaker (Figure 17).
10
37-137 TO TRAILER RECEPTACLE & TROUBLE LIGHT
HDC CIRCUIT
BREAKER
10
1070
HDC CONTROL BOX POWER (TO CABLE W1J1-A)
B1
B2
B3
A1
A2
A3
X1
X2
1070
FROM MASTER RELAY
WIRING HARNESS
12357211
T01917HDC
“Y” CONNECTOR
(7982404)
IN-LINE CONNECTOR
(8741492)
LEAD ASSEMBLY
(12496957)
LEAD ASSEMBLY
(12496958)
Figure 17.
Hydraulic Diagnostic Center (HDC) Simplified Power Input Circuit.
CONDITION/INDICATION
Is 28 VDC present at master relay (input) side of HDC circuit breaker?
DECISION
YES - Go to Step (18).
NO - Go to Step (17).
TM 5-2350-378-23&P
0021
0021-14
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