Spreader and Sprayer Maintenance

Rotary Spreaders
1. Check all the bearings and/or bushings, including the axle bearings/bushings, impeller shaft support and agitator shaft support. Replace the bearings and/or bushings if they appear to be worn or seized.

2. Inspect the gear set. Is there excessive wear on the gear teeth? When the axle is rotated, do the gear teeth make proper contact? Replace the gear set if wear is detected.

3. Inspect the impeller. Remove any buildup of product on the impeller. Check the impeller for wear and replace if necessary. Also check the agitator cam.

4. Check and adjust the shut-off plate to ensure proper operation. A sticking shut-off plate could alter product distribution rates, causing non-performance or plant injury.

5. Lubricate grease fittings. If the spreader is equipped with grease fittings, these points should be lubricated frequently to expel dirt and moisture from the bearing/bushing areas.

6. Check spreader calibration. Refer to operating instructions for proper calibrator adjustment. Remember the importance of properly calibrated equipment.

A properly maintained and calibrated rotary spreader, operated by qualified applicators, will produce excellent application results.

Poly and Fiberglass Sprayers
1. Inspect the tank, all suction and high pressure hoses and hose fittings. Repair or replace any component showing any sign of leakage. Clean the strainer assembly and replace the seat and/or strainer screen as needed.

2. Service the engine. Start the new season with new oil. Drain the oil and replace with 10W40 motor oil with service classification SE or SF. Oil changes are recommended every 50 hours (25 hours under heavy load or in high ambient temperatures) during the season. Check and replace the engine air filter as necessary. Follow the maintenance procedures found in the operating and maintenance instruction furnished with the sprayer.

3. Service the pump. Change the oil in the pump and replace the piston and accumulator/diaphragms before starting a new season. While replacing the diaphragms, inspect the pump valves and the general condition of all pump components. Check the damper diaphragm for signs of cracking and replace if necessary.

4. Inspect the V-belts and agitator assembly. On fiberglass units only, inspect the conditions of all the V-belts and adjust or replace if needed. Grease and adjust packing to assure trouble-free operation. Check the condition of the agitator assembly. Repair or replace any loose or worn components.

5. Inspect spray guns, wands and booms. Replace spray tips that show signs of wear. Rebuild or replace any spray attachments that leak.

The above inspection and maintenance procedures will help ensure a trouble-free application season.