TM 5-3740-218-13&P
Table 4-2. Unit Troubleshooting
Malfunction
Test or Inspection
Corrective Action
Step 4.
Check for continuity at secondary manifold solenoid for 4- 10 ohms.
If 4-10 ohms is not present, replace secondary manifold
If 4-10 ohms is present, replace spray system control valve
LV SYSTEM
10. NO SPRAY FROM NOZZLES.
Step 1.
Check for clogged strainer.
Remove and clean strainer.
Step 2.
Check for leaking hoses.
Replace hoses and hose clamps (para 4-46).
Step 3.
Check for defective spray nozzle.
Repair or replace (para 4-46).
Step 4.
Check for defective LV boom assembly.
Repair or replace (para 4-46).
Step 5.
Check for chemical pump operation.
Check for air in chemical pump. Remove hose at top of volute and
check for liquid. If liquid is not present, run chemical motor until
liquid is present. Check chemical motor bleed line hose for foreign
material. Clean or replace (para 4-40).
Step 6.
Check spray system control valve for operation.
Refer to Malfunction 9.
ULV SYSTEM
11. ROTARY ATOMIZERS DO NOT ROTATE.
Step 1.
Check for leaking hoses.
Replace hoses and hose clamps (para 4-49).
Step 2.
Check for defective hand control unit.
Replace (para 4-38).
