Hunter G835 - Nozzle Replacement

nozzle RePlACeMenT
–
g70 RiSeRS
To view and replace the nozzles, it is necessary to:
With riser held in hand – compress the riser spring by grabbing the riser seal assembly (g 27), pressing downward
and then holding riser rmly to prevent the spring from moving upwards.
Note – Riser assembly must be removed to changed nozzles. This is necessary since stator setting must also be
adjusted when changing nozzles. See section titled, “Stator Adjustments – Why and When Are They Needed”.
The G70 riser has two color-coded opposing nozzles. All G70 nozzles are retained in the nozzle housing (turret) with
setscrews (g 28). Each setscrew has a
3
⁄32 inch Allen wrench recess at the top. When replacing both G70 nozzles, it is
important to note that the nozzles must be the same color. These color-coded sets offer the optimum efciency for
eachowrange.
On the G70’s rubberized logo cap, locate the two opposing arrowhead shaped areas directly above the nozzles (g 29).
Insert the metal end of the Hunter wrench or a
3
⁄32 inch wrench into the membrane within the arrow that is directly above
the nozzle to be replaced. Engage the setscrew and turn counter-clockwise until the bottom of the setscrew clears the
top of the nozzle.
Note the nozzle’s orientation prior to removal to aid in the nozzle installation process. Using needle-nose pliers, grab
the right side of the nozzle on its outer ring and pull outward to remove the nozzle. In some cases it may be necessary
to grab the nozzle’s orice to remove the nozzle. Discard the old nozzle as the removal process can damage the
nozzle and negatively affect the performance.
Insert the replacement nozzle into the nozzle housing with the tab positioned to the right. Press rmly until it stops.
Turn the nozzle-retaining setscrew clockwise while making sure that the setscrew does not distort the nozzle. Lower
the setscrew in front of the nozzle only as far as necessary to prevent nozzle movement. Take care not to position the
setscrew in front of or against the nozzle’s orice as performance can be negatively affected.
If the nozzle size or color has been changed, please note that the adjustable stator will likely need to be reset. Refer
to the Stator Adjustment section below for information on how to reset the stator.
FIG 27 FIG 28 FIG 29
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Fig 27
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Fig 28
Fig 29
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Fig 28
Fig 29
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