Hydraulic Suspension LOCKOUT WILL NOT ENGAGE (HMMH). cont'd -680640357

TM 5-2420-224-20-1

Table 3-5. Troubleshooting (Cont)

Malfunction

Test or Inspection

Corrective Action

ELECTRICAL SYSTEM (CONT)

Step 26. Check for +24 VDC between wire 71 (33) and ground at fuse box 1 (36).

If +24 VDC is not present, replace fuse.

If +24 VDC is present, repair wiring 71 between fuse box 1

and forklift wiring harness connector.

Step 27. Check for +24 VDC between wire 711 (37) and ground at fast group relay

(32).

If +24 VDC is not present, repair wiring 711 at fast group relay.

If +24 VDC is present, go to step 28.

Step 28. Check wire 008 (38) at fast group relay (32) for continuity to ground.

If open to ground, replace relay.

If short to ground, go to step 29.

Step 29. Disconnect connector AB (24) and check wire 008 (38), on relay side of

connector, for continuity to ground.

If short to ground, repair wiring 008 between fast group relay

and connector AB.

If open to ground, reconnect connector AB and go to step 30.

Step 30. Disconnect cab floor separation point (25) and check wire 008 (38), on cab

side of connector, for continuity to ground.

If short to ground, repair wiring 008 between connector AB and

cab floor separation point.

If open to ground, reconnect cab floor separation point and go

to step 31.

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