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 319 of 644
APPARENT HYDRAULIC DIAGNOSTIC CENTER (HDC) SYSTEM PROBLEM - Continued
STEP
8.
Disconnect umbilical cable connector W4P1 from HDC control box connector J1 (Figures 7 and 8).
UMBILICAL CABLE
CONNECTOR W4P1
HDC
CONTROL BOX
T01907HDC
CONTROL BOX
CONNECTOR J1
Figure 7.
Umbilical Cable Assembly W4 Connections to Hydraulic Diagnostic Center (HDC) Control Box.
C
B
A
T01908HDC
PLUG
Figure 8.
Pin Layout for Connector W4P1.
CONDITION/INDICATION
Is 28 VDC present between umbilical cable connector W4P1 pins A and B?
DECISION
YES - Replace HDC control box.
NO - Go to Step (9).
TM 5-2350-378-23&P
0021
0021-7
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