2
QD8 Quik-Drive Tap-Changer Motor Replacement Kit 57A63675100A
INSTALLATION INSTRUCTIONS
MN225038EN
June 2016
Removal and disassembly procedure
1.
This procedure may be completed without removal of
the tap changer from the voltage regulator. Carefully
follow the procedures for partially untanking a voltage
regulator in the document MN225008EN, VR-32 voltage
regulator with Quik-Drive tap-changer installation,
operation, and maintenance instructions.
2. It is recommended to start this procedure with the tap
changer in the neutral position. See the section
Placing
Tap-Changer into Neutral
located after the installation
procedure.
3. Use diagonal cutters to cut the wire ties from the
motor wires. Refer to Figure 2.
Cut These Wire Ties
Figure 2. Removal of wire ties
4. Use a Phillips screwdriver to disconnect the white
motor wire located on terminal “G,” the red motor wire
located on terminal #6 and the blue motor wire located
on terminal #2. Refer to Figure 3.
Blue
Motor
Wire
White
Motor
Wire
Red
Motor
Wire
Figure 3. Disconnection of wires
5. Loosen the locknut on the chain tension screw with
a 7/16" wrench. Loosen the chain tension screw with
a screwdriver until the rubber bumper is against the
motor mounting bracket. Refer to Figure 4.
Chain Tension
Screw
Locknut
Motor Mounting
Bracket
Rubber Bumper
Figure 4. Loosening the chain tension
6.
Remove the motor pivot stud locknut with a 9/16"
ratcheting wrench. Pull the motor off of the motor pivot
stud; make sure the Belleville washer stays on the
motor pivot stud and does not fall into the tank. Set
the motor in the motor relief area of the molded back
panel. Refer to Figure 5 and Figure 6.
