TM 5-6675-348-13&P
Table 3-7. Blade Pro Motor Grader Control System Troubleshooting (Cont)
Malfunction
Test or Inspection
Corrective Action
FAULT 3-8. HYDRAULIC CONTROL VALVES DO NOT RAISE OR LOWER IN AUTOMATIC MODE,
BUT BLADE OPERATES MANUALLY. (Cont)
To avoid damage to equipment, fuse must be replaced with a 25-amp fuse.
Step 3.
Check fuse (2) in Remote Interface Box.
If fuse (2) is faulty, replace.
Do not start or move Blade Pro Motor Grader Control System while anyone is under the
130G Grader. Failure to comply could result in severe injury or death to personnel
Step 4.
With 130G Grader running and while clear of moving parts of 130G Grader, press
rubber-covered buttons (4) on ends of Valve Spools (5) to ensure Valve Spools (5) are not
frozen. Blade should move up and down when each rubber-covered button (4) is pressed.
If Valve Spools are frozen, replace Proportional Valve Assembly (Para 3-35).
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