Rotary Valve Service, Lieve Pressure, Disassembly

[i!i !! :;:_!! :;:_!! :;:_!! : SECTION 5

SERVICE TECH. INFORMATION

B. ROTARY VALVE SERVICE

Before working on the valve, turn off the water sup-

ply and disconnect from electrical power. TO RE-

LIEVE PRESSURE:

•3 VALVE BYPASS: Close the inlet valve and open a soft water faucet. Then close the outlet valve and

open the bypass valve.

• SEARS SPECIAL BYPASS: Slide the bypass valve

stem to bypass position. Loosen three hex head

screws toward the back side of the valve to allow

pressure water to bleed out. Catch water with a rag.

Install bearing onto gear shaft. Install motor plate and tighten screws to a snug fit. See page 6- 3 for de- tailed schematic.

Lubricate the gear on the motor, and the valve cam

gear with Molykote grease, or other high quality gear lubricant.

Be sure to orient switch as shown, with lever toward the cam.

DISASSEMBLY

To remove a part or group of parts, refer to the valve

drawing. A common screwdriver or nut driver,

Phillips screwdriver and pliers are the only tools

needed to completely disassemble.

SERVICING THE VALVE

Inspect all o-rings, seals and gaskets for wear or de- fects.

motor mounting

motor plate

screws//motor

motor plate _

screws

plastic bearing

cam & gear

Inspect the bottom surface of the rotor for scratches, chips or wear.

Note:

If replacement is needed, be sure to use the current

replacement part. See page 6- 3 for repair parts.

ASSEMBLY

Be sure all parts are in place and in the proper posi-

tion. Lubricate ALL o-rings and seals with FDA ap- proved silicone grease. To install the rotor seal, first

place the seal into the valve groove, rounded side

down (see cross-section). Apply a light coating of silicone grease to the seal's crossing ribs. Then, care-

fully center the wear strip on the seal, and push it

downward onto the seal.

Install the nozzle and venturi seal and drain seal.

Assemble wave washer bearing, the wave washer, and two o-rings onto the rotor top shaft. Then center the rotor in the valve body, on the rotor seal.

Lower the cover onto the valve body and rotor shaft. Then install the cover holding screws. Before tight- ening the screws, install the valve cam and gear. Then, turn the rotor (clockwise only) to service posi-

tion. Tighten the valve assembly screws using a

criss-cross pattern. If a torque wrench is available,

torque to 30-40 inch pounds. Do not over tighten.

switch

seal"	rotor
seal"
)_'''/	rotor seal
/	drain seal
_.dt//	nozzle & venturi seal
sensor
housing
See
Nozzle
assembly
service,
page 3-2

5-5

Problems, Questions? Call 1- 800- 426- 9345 Kenmore Water Line