Quantcast HYDRAULIC SUSPENSION LOCKOUT WILL NOT ENGAGE (HMMH) (REG. NO. UC053E THRU UC053K) cont'd -680640379

 

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HYDRAULIC SUSPENSION LOCKOUT WILL NOT ENGAGE (HMMH) (REG. NO. UC053E THRU UC053K) cont'd -680640378
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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) (REG. NO. UC053E THRU UC053K) cont'd -680640380
TM 5-2420-224-20-1
Table 3-5. Troubleshooting (Cont)
Malfunction
Test or Inspection
Corrective Action
ELECTRICAL SYSTEM (CONT)
Step 33. Check for +24 VDC between wire (42) and wire (43) and ground at
connector AB (24).
If +24 VDC is present, repair wiring (42) and wiring (43)
between connector AB and fuse box 3.
If +24 VDC is not present, go to step 34.
Step 34. Check for +24 VDC between wire (42) and wire (43) and ground at cab
floor separation point (25).
If +24 VDC is not present, repair wiring (42) and wiring (43)
between NATO slave receptacle and cab floor separation point.
If +24 VDC is present, repair wiring (42) and wiring (43)
between cab floor separation point and connector AB.
Step 35. Check for +24 VDC between wire (6) and ground at conneotor W (44).
If +24 VDC Is present, repair wiring (6) between D+ relay and
connector W.
If +24 VDC is not present, go to step 36.
Step 36. Check for +24 VDC between wire (6) and ground at relay K2 (45).
If +24 VDC is not present, perform Malfunction 2.
If +24 VDC is present, repair wiring 286 between connector W
and relay K2.
Step 37. Check for +24 VDC between wire (46) and wire (47) and ground at motor
relay (22).
If +24 VDC is not present, go to step 41.
If +24 VDC is present, go to step 38.
Step 38. Check for +24 VDC between wire (46) and wire (47) and ground at
connector AA (48).
If +24 VDC is not present, repair wiring (46) and wiring (47)
between motor relay and connector AA.
If +24 VDC is present, go to step 39.
Step 39. Check for +24 VDC between wire (46) and wire (47) and ground at cab
floor separation point (25).
If +24 VDC is not present, repair wiring (46) and wiring (47)
between connector AA and cab floor separation point.
If +24 VDC is present, go to step 40.
3-249

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