Sears 721.66339, Manual

Page: 16 / 39

D. MAGNETRON REMOVAL
(1) Disconnect the wire lead from the magnetron.
(2) Carefully remove the mounting screws holding the
magnetron and the waveguide.
(3) Remove the magnetron assembly until the tube is clear
from the waveguide.
NOTE:
1. When removing the magnetron, make sure its dome
does not hit any adjacent parts, or it may be damaged.
2. When replacing the magnetron, be sure to install the
magnetron gasket in the correct position and be sure
that the gasket is in good condition.
3. After replacing the magnetron, check for microwave
leakage with a survey meter around the magnetron.
Microwave energy must be below the limit of 5 mW/cm
2
.
(With a 275 ml. water load).
Make sure that gasket is rigidly attached to the
magnetron. To prevent microwave leakage, tighten the
mounting screws properly, making sure there is no gap
between the waveguide and the magnetron.
E. REMOVING THE TURNTABLE MOTOR
1) Remove the turntable and rotating ring.
2) Lay the unit down on its back.
3) Remove the turntable motor cover.
The turntable base cover is easily removed by pinching
the eight parts with a wire cutting.
4) Disconnect the leadwire from the turntable motor
terminals.
5) Remove the screw securing the turntable motor to the
oven cavity ASSEMBLY.
6) After repairing the motor, rotate the removed turntable
motor cover.
7) Fit the turntable motor cover
8) The taptite screw shall be used when a turntable motor
cover is secured with a screw.
’s projecting part to the base
plate slit.
NOTE:
1. Remove the wire lead from the turntable motor VERY
CAREFULLY.
2. Be sure to grasp the connector, not the wires, when
removing.
-15-
Waveguide
Magnetron
Air duct
Magnetron
Gasket
Magnetron
Dome
Waveguide
Bracket
Figures 11
Wire Leads
Taptite Screw
Turntable Motor
Figures 12