CAUTION: TORQUE ONLY CLOCKWISE FIRMLY BUT NOT TIGHTLY.
3. Install Teflon diaphragms by removing check valve end (P/N 4623ASB) and placing Teflon diaphragm (P/N
6227) between nozzle and installed black viton diaphragm (P/N 4620-VI).
4.5.2
Maintenance of Nylon Nozzles
1. The nylon nozzle provided with the herbicide nozzle kit requires delicate handling, assembly and installation
care to prevent cross threading and thread stripping. NEVER TORQUE NYLON PARTS OTHER THAN BY HAND.
FIRM TIGHTNESS WILL RETAIN.ASSEMBLED PARTS.
2. When a fluid leak develops from any nozzle tip during static conditions, the check valve (end cap sub-
assembly, P/N 9758NYL) shall be removed and inspected for debris that may be lodged between the fluid passage and
diaphragm which would prevent its closing. More often however, the leak may be stopped by partially unscrewing the
retainer (P/N 4624AL) and then re-tightening it gradually until the leak discontinues. A light pressure only is required to
maintain proper check valve operation. OVERTIGHTENING WILL CREATE NOZZLE DRIPPING.
4.5.3
Windmill Adjustment
Before starting operations the windmill pitch must be adjusted to its maximum setting (1.O) by lightly rotating its
external adjusting screw in a clock wise direction until the blade root edge matches the indicated setting value of 1.0.
CAUTION:
DO NOT TORQUE BEYOND BLADE POSITION 1.0 WHEN RESISTANCE TO ROTATIONAL MOTION
IS EXPERIENCED. INTERNAL DAMAGE TO MECHANISM WILL RESULT FROM OVER TORQUING.
29d
