TB-9-3950-253-13-P
PALLETIZED LOAD SYSTEM TRUCK, M1075 and M1075A1 (PLS) AND HEAVY EXPANDED MOBILITY TACTICAL TRUCK, M1120, M1120A2, AND M1120A4 (HEMTT), ENHANCED CONTAINER HANDLING UNIT (E-CHU)
TECHNICAL BULLETIN; OPERATOR AND FIELD MAINTENANCE, INSTALLATION INSTRUCTIONS, AND REPAIR PARTS AND SPECIAL TOOLS LIST
JULY 2009
TB-9-3950-253-13-P - Page 215 of 704
0019-35
Change 1
TB 9-3950-253-13&P
0019
31
Hout - Relay 2
Fuse
Fuse Blown Due
To Short Circuit
On Relay Output
(Hook Arm Up
Sensor)
Relay Box
Fuse Will Auto
Reset After Fault
Rectified
Refer to
No Stow-
age Function
Mal-
function
32
Hout - Relay 3
Fuse
Fuse Blown Due
To Short Circuit
On Relay Output
(Middle Frame
Down Sensor)
Relay Box
Fuse Will Auto
Reset After Fault
Rectified
Refer to
No Stow-
age Function
Mal-
function
33
Hout - Relay 4
Fuse
Fuse Blown Due
To Short Circuit
On Relay Output
(Free-flow Sole-
noid)
Relay Box
Fuse Will Auto
Reset After Fault
Rectified
Refer to
No Stow-
age Function
Mal-
function
34
Hout - Relay 5
Fuse
Fuse Blown Due
To Short Circuit
On Relay Output
(Transit Valve)
Relay Box
Fuse Will Auto
Reset After Fault
Rectified
Refer to
No Stow-
age Function
Mal-
function
35
Hout - Relay 6
Fuse
Fuse Blown Due
To Short Circuit
On Relay Output
(Hook Arm
Unload Sole-
noid)
Relay Box
Fuse Will Auto
Reset After Fault
Rectified
Refer to
No Stow-
age Function
Mal-
function
36
Hout - Relay 7
Fuse
Fuse Blown Due
To Short Circuit
On Relay Output
(Middle Frame
Load Solenoid)
Relay Box
Fuse Will Auto
Reset After Fault
Rectified
Refer to
No Stow-
age Function
Mal-
function
37
Hout - Relay 8
Fuse
Fuse Blown Due
To Short Circuit
On Relay Output
(Hook Arm Load
Solenoid)
Relay Box
Fuse Will Auto
Reset After Fault
Rectified
Refer to
No Stow-
age Function
Mal-
function
CONFLICTS
C0
Middle Frame
Sensor Conflict
Signals Present
From Both Sen-
sors On The
Middle Frame
Hook Lift
Check Both
Sensors -
Replace If Nec-
essary
Refer to
No Hook
Lift Function
Mal-
function
C1
Hook Arm Sen-
sor Conflict
Signals Present
From Both Sen-
sors On The
Hook Arm
Hook Lift
Check Both
Sensors -
Replace If Nec-
essary
Refer to
No Hook
Lift Function
Mal-
function
Table 2. Enhanced Container Handling Unit (E-CHU) - Continued.
ERROR
CODE
DESCRIPTION
COMMENTS/
PROBLEM
LOCATION
POSSIBLE
ACTION
TROUBLESHOO-
TING REFERENCE
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