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 TM55-1730-228-13&P
3-14. TROUBLESHOOTING SYPTOMS INDEX
3-14
a. Each major SPEMS system is listed, specific symptoms for each system are indented below the appropriate
heading. Refer to the page indicated for the proper troubleshooting procedure.
NOTE
Before you begin troubleshooting, be sure all preliminary maintenance checks and services (PMCS) have
been done. Refer to Chapter 2, Table 2-1.
b. When troubleshooting the SPEMS, keep the following in mind:
(1) Always use the electrical schematic when troubleshooting the electrical system. See Foldouts in the back
of this manual.
(2) Hydraulic pressure varies by design from one branch of the hydraulic system to another. Always refer to
the hydraulic schematic to determine proper system pressures at various locations to compare with
measured values. See Foldouts in the back of this manual.
(3) A multimeter (VOM) is necessary for checking electrical circuits and components.
Refer to para 3-8,
Multimeter Function and Use.
Troubleshooting Symptoms Index
SYSTEM
SYMPTOM
PAGE
ELECTRICAL SYSTEM
Battery Overcharges............................................................................................................................ 3-40
.
Battery Will Not Charge........................................................................................................................3-34
.
Brakes Do Not Engage .........................................................................................................................3-35
.
Deck Will Not Traverse.........................................................................................................................3-28
.
Electrical System Will Not Operate........................................................................................................3-40
.
Engine Will Not Star.t............................................................................................................................ 3-35
High Torque Control Does NtoWork.......................................................................................................3-23
Horn Does Not Operate ........................................................................................................................3-41
.
Motion Continues After Bumper Contacts Obje..t ................................................................................... -32
c.
No Drive Response.............................................................................................................................. 3-18
.
No Movement In High Speed................................................................................................................. -26
.
3
No Steering Control.............................................................................................................................. 3-21
Platform Will Not Lower........................................................................................................................3-33
Platform Will Not Raise.........................................................................................................................3-27
.
Platform Will Not Remain Raised..........................................................................................................3-29
.
SPEMS Travels At A Slow or Erratic Rate............................................................................................. 3-36
..
SPEMS Travels At High Speeds With Platform U.p................................................................................. -31
.
SPEMS Will Travel In One Direction Only............................................................................................. 3-37
.
Stabilizer Controls Raise The Platform..................................................................................................3-34
.
Stabilizers Will Not Extend..................................................................................................................... -38
Stabilizers Will Not Remain Up.........................................................................................................3-24,25
.
Stabilizers Will Not Retract...................................................................................................................3-39
..
GO ON TO NEXT PAGE
3-16
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