CHAPTER 5
DIRECT SUPPORT AND GENERAL SUPPORT
MAINTENANCE INSTRUCTION'S
Section I. REPAIR PARTS, SPECIAL TOOLS AND EQUIPMENT
maintenance of the insecticide sprayer.
5-1. Tools and Equipment
Tools, equipment, and spare parts issued with or
5-3. Maintenance Repair Parts
authorized for the aircraft-mounted insecticide
sprayer are listed in the basic issue items list,
Repair parts and equipment covering Direct Sup-
port and General Support maintenance levels for
the insecticide sprayer are listed and illustrated
5-2. Special Tools and Equipment
in TM 5-3740-211-24P.
No special tools or equipment are required for
Section II. TROUBLESHOOTING
insecticide sprayer.
The chart serves only as a guide
5-4. Toubleshooting Chart
and does not preclude the chance that other troubles
exist.
and General Support maintenance level for the
Section III. GENERAL MAINTENANCE
removal of hoses, use procedures given in paragraph 4-
5-5. Removal of Components
15, step c.
When installation calls for attachment of
Removal of major components, as described in section
hoses, use procedures given in paragraph 4-15, steps d
IV following, often requires removal of components
and e.
Clean all threaded connectors thoroughly.
authorized for removal by organizational maintenance
Use MIL-T-27730 teflon tape on all pipe threads.
level.
When procedures are lacking for removal of
Use suitable thread lubricant on all tube fittings.
parts, refer to pertinent paragraphs of chapter 4.
Use tire soap on inside diameter of low-pressure
5-6. Hose Removal and Installation
hoses to aid in installation.
Whenever removal of major components calls for
Table 5-1. Direct Support and General Support Troubleshooting Chart.
Malfunction
Probable cause
Corrective action
1.
Tank support damaged.
Combat damage or improper handling.
Repair or replace damaged components
(9-1/9-4).
2.
Leaks in tank.
a. Holes or cracks.
a. Repair tank (8-12).
b. Severe damage or faulty seals.
b. Replace tank (8-9/8-14).
3.
Couplings leak.
a. Foreign particles present.
a. Clean couplings.
b. Faulty seals
b. Replace coupling (8-6/8-8).
4.
Leak develops in system installed in
Faulty fluid system components.
Repair or replace faulty components.
aircraft.
5.
Use of pump causes vibration.
Pump bearings faulty.
Replace pump bearings (7-11/7-16).
6.
Pump leaks through weep holes.
Seals faulty
Replace seals (7-11/7-16).
7.
No response to spray command.
a. Faulty control valve.
a. Replace or repair control valve (8-1/8-5).
b.
Pump brake sticks.
b.
Replace brake cable (4-22) or repair pump brake (7-
7/7-10).
8.
No response to stop spray command. a.
Faulty control valve.
a.
Remove and repair control valve (8-1/8-5).
b.
Pump brake sticks.
b.
Replace brake cable (4-22) or remove and repair
pump brake (7-7/7-10).
9.
Spray intermittent.
Faulty synchromatic windmill pump drive.
Remove and repair pump and brake assembly and
windmill assembly as required (7-2/7-16).
10. Spray uneven.
Faulty pump.
Remove and repair pump (7-11/7-16).
11. Unable to adjust windmill blade angle. Synchromatic windmill internal mechanism -
Remove and repair synchromatic windmill
damaged.
assembly (7-2/7-6).
5-1
