TM 9-2590-209-14&P
Table 4-2. Troubleshooting - Continued
MALFUNCTION
TEST OR OPERATION
CORRECTIVE ACTION
4.
BLADE ASSEMBLY FAILS TO DIG PROPERLY.
Step 1.
Inspect blade assembly cutting edge for looseness and wear.
a.
If loose, tighten attaching bolts. If worn, reverse or replace cutting edge (para 4-19).
b.
If not loose or worn, proceed to step 2.
Step 2.
Check blade assembly for misalignment of pushbeams or tilt arms and damage or looseness of
attaching hardware.
a.
If misaligned, damaged or loose, replace damaged parts and tighten loose components.
b.
If not misaligned, damaged or loose, notify organizational maintenance.
5.
BLADE ASSEMBLY FAILS TO OPERATE.
WARNING
In troubleshooting M9 bulldozer system, remain clear of blade assembly even with system turned off.
Step 1.
Check oil in right-angle drive and magnetic clutch for proper level. Disengage blade assembly carrying
hooks. Place MASTER BATTERY switch in ON position and start engine. Place HYDRAULIC PUMP
switch in ON position. Run engine at 1500 rpm. Check oil in reservoir for proper level. Check if blade
assembly will operate in any control position with engine running at 1500 rpm.
a.
If blade assembly will operate in at least one control position, proceed to step 2.
b.
If blade assembly will not operate in any position, proceed to step 7.
Step 2.
Place HYDRAULIC PUMP switch in OFF position. Check if blade assembly will operate.
a.
If blade assembly operates, replace HYDRAULIC PUMP switch (para 4-90).
b.
If blade assembly does not operate, proceed to step 3.
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