Installation procedure
Stationary contact removal and installation 
instructions
1.   Each QD5 tap-changer has nine main stationary 
contacts. Of these, eight are tap contacts and one is 
the neutral stationary contact. See Figure 78.
2.  Use a 9/16" deep-well socket and ratchet to loosen and 
remove the nuts and washers from each stationary 
contact stud. See Figure 79. 
QD5 tap-changer main stationary contact 
assembly kit 5791646A24
(Refer to Service Information MN225026EN)
General
The purpose of this replacement kit is to provide the parts 
and installation instructions for replacing the main stationary 
contacts on a QD5 Quik Drive tap-changer.
Parts supplied
Item Part Number Description Qty
1 0791646A24 Stationary Contact 1
Tools required
• 
Ratchet Wrench
• 
9/16 inch Deep-well Socket
• 
Torque Wrench in-lbs
• 
3/8 inch Socket
Figure 78.  Stationary contacts.
Neutral Stationary 
Contact
Stationary 
Contacts
Figure 79. Removal of contact hardware.
Figure 77.  Main stationary contact.
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QD5 QUIK-DRIVE TAP-CHANGER INSTALLATION AND MAINTENANCE INSTRUCTIONS   MN225012EN   March 2016