TM 5-3740-218-13&P
Table 5-1. Direct Support Troubleshooting (Cont)
Malfunction
Test or Inspection
Corrective Action
Step 4. Check for defective secondary manifold.
•
If pressure drops steadily on pressure gage, repair or replace
secondary manifold (para 5-9).
Step 5. If problem still exists, perform test or inspection procedure in Malfunction 3.
SOLID DISPERSAL SYSTEM
5. SLINGER WILL NOT ROTATE.
Step 1. Check for debris between slinger and hopper assembly.
•
Remove debris.
Step 2. Check for Class III hydraulic leaks at motor shaft and fittings.
•
Tighten fittings or repair hydraulic motor (para 5-13).
Step 3. Check for operation of hydraulic motor.
•
If hydraulic motor shaft does not rotate by hand, repair hydraulic motor (para 5-13).
LIQUID DISPERSAL SYSTEMS
6. CHEMICAL PUMP WILL NOT DISPERSE PESTICIDE.
Step 1. Check for excessively noisy chemical pump.
•
Replace or repair chemical pump (para 5-12).
Step 2. Check that chemical pump shaft rotates freely.
•
If shaft does not rotate, replace or repair chemical pump (para 5-12).
7. SPRAY SYSTEM CONTROL VALVE DOES NOT OPEN.
Step 1. Check for missing or defective flapper or ball installed backwards.
•
Repair control valve (para 5-14).
Step 2. Check for operation of spray system control valve.
•
Replace or repair spray system control valve (para 5-14).
5-6
