Hunter G835 Owner's Manual page 48

Separate the Solenoid from the Pilot Valve – remove the solenoid from pilot Valve with counter-clockwise turns. pull
to separate the solenoid from the pilot Valve (fig 133). the gray plastic part at the base of the solenoid is called the
detent ring. When the solenoid is attached to the pilot Valve, the detent ring interacts with the pilot Valve to create
the auto position's detent (the stopping point when moving the selector cap to the auto position). under normal
operating conditions, the detent ring will not need replacement. If the solenoid needs to be replaced, it will also be
necessary to replace the detent ring.
Solenoid Servicing – the plunger assembly and the rubberized seat-seal are serviceable on Hunter solenoids. to
replace a worn or damaged rubberized seat-seal, simply pull the old one off and press the new one into position
on the solenoid's plunger. since a worn or damaged rubberized seat-seal can cause the rotor to weep water when
the rotor is deactivated, it is highly recommended that the rubberized seat-seal be replaced whenever servicing the
plunger assembly.
the plunger assembly is retained within the solenoid with a secure snap-fit feature. to remove the plunger assembly,
first notice there is a black Knurled ring just below the solenoid's rubberized seat-seal. just below the black Knurled
ring is a black o-ring. the plunger assembly can be removed by forcing the thumb-nail under the black Knurled
Ring and pulling to separate the Plunger assembly from the Solenoid (fig 134). Alternatively, a small flat bladed
screwdriver can be inserted below the black Knurled ring and twisted to release the plunger assembly. use care not
to damage the black o-ring. If the plunger assembly does not stay assembled when removed from the solenoid, it is
necessary to replace the plunger assembly.
rinse the plunger assembly and solenoid with clean water to remove any contaminating debris. If damage or worn,
replace black o-ring and/or rubberized seat-seal (fig 135). Insert plunger assembly into the solenoid and then press
to engage the snap-fit feature. Finally, press on the seat-seal to cycle the plunger assembly. If plunger does not cycle
up and down freely, repeat cleaning procedure and/or replace the plunger assembly.
FIg 133
Fig 132
FIg 134 FIg 135
Fig Fig Fig Fig
133 133 134 134
45