Eaton COOPER POWER SERIES - Qd5 Tap-Changer Reversing Neutral Stationary Contact Assembly Kit 5791646 A26

QD5 tap-changer reversing neutral stationary
contact assembly kit number 5791646A26
(Refer to service Information MN225025EN)
General
The purpose of this replacement kit is to provide the parts
and installation instructions for replacement of the reversing
neutral stationary contact on a QD5 Quik Drive tap-changer
Parts supplied
Item Part Number Description Qty
1 0791646A26 Reversing Neutral Stationary
Contact
1
Tools required
•
Ratchet Wrench
•
3/8 inch Socket
•
7/16 inch Socket
•
9/16 inch Deep-well Socket
•
Torque Wrench, in-lbs
•
Small flat-blade Screwdriver or 5/32 inch Allen Wrench
•
8" Long flat-blade Screwdriver
•
Loctite
®
243™ Threadlocker
Installation procedure
Removing existing contact assembly
ote:N Retain all hardware.
1. Hold the reversing movable contact assembly to
prevent it from moving. Using a 9/16" wrench, loosen
and remove the reversing actuator arm nut. See Figure
54.
2. Lift outward on the reversing actuator arm and remove
it from the reversing movable contact bushing. The
reversing actuator shaft may be tapped in to allow
clearance to remove the arm. See Figures 55 and 56.
Figure 53. Reversing neutral stationary contact.
Figure 55. Reversing actuator arm removal.
Reversing
Actuator
Shaft
Reversing
Actuator
Arm
Figure 54. Reversing actuator arm nut removal.
Reversing Neutral
Stationary Contact
Reversing
Segment
Actuator Arm
Reversing
Movable Contact
Assembly
Reversing Actuator
Arm Nut
23
QD5 QUIK-DRIVE TAP-CHANGER INSTALLATION AND MAINTENANCE INSTRUCTIONS MN225012EN March 2016