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Hydraulic Suspension LOCKOUT WILL NOT ENGAGE (HMMH). cont'd -680640361
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TM-5-2420-224-20-1 Tractor Wheeled 4x4 DED Small Emplacement Excavator (SEE) and High Mobility Material Handler (HMMH) Manual
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Hydraulic Suspension LOCKOUT WILL NOT ENGAGE (HMMH). cont'd -680640363
TM 5-2420-224-20-1
Table 3-5. Troubleshooting (Cont)
Malfunction
Test or Inspection
Corrective Action
ELECTRICAL SYSTEM (CONT)
Step 41. Check for +24 VDC between wire 7 and wire 14 (48) and ground at
suspension lockout pump motor (49).
If +24 VDC is not present, repair wiring 7 and wiring 14
between cab floor separation point and pump motor.
If +24 VDC is present, replace hydraulic suspension tockout
pump (page 4-51 1).
Step 42. Check for +24 VDC between wire 11 (50) and ground at connector AB (24).
If +24 VDC is not present, repair wiring 11 between D+ relay
and connector AB.
If +24 VDC is present, go to step 43
3-232

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