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Using enclosed template, mark door as
illustrated at desired lock height and
correct backset. 46" recommended
door height.
High Side of
Mark Center
Door Bevel
for 1" Hole
With deadbolt extended, install cylinder
housing without key and cylinder
tailpiece in line with tailpiece slot.
1. Measure door thickness.
2. If the tailpiece needs to be
shortened; grip the
tailpiece with pliers on both
sides of the score mark
and twist to break off.
HOW TO CHANGE TAILPIECE
All locks are preset for 1-3/4" door thickness. For 1-3/8"
doors, substitute with shorter tailpieces provided in poly bag.
Depress spring pin and unscrew
cylinder cap. Remove and replace
tailpiece. Screw cylinder cap onto plug
while holding spring pin depressed until
the cap is tight, then back off one or two
notches as required. Check cylinder for
proper clearance. If cap is too loose, the
key cannot be withdrawn and if too tight
cylinder will bind. Make sure that spring
pin is engaged with cylinder cap.
100 Yale Avenue, Lenoir City, TN 37771 • Product Support Tel 800.438.1951 • Fax 800.338.0965 • www.yalecommercial.com
Yale® is a registered trademark of Yale Security Inc., an ASSA ABLOY Group company. Other products' brand names may be trademarks or registered trademarks of their respective owners and are mentioned
for reference purposes only. These materials are protected under U.S. copyright laws. All contents current at time of publication. Yale Security Inc., an ASSA ABLOY Group company reserves the right to
change availability of any item in this catalog, its design, construction, and/or its materials. Copyright © 2010, Yale Security Inc., an ASSA ABLOY Group company. All rights reserved. Reproduction in whole or
An ASSA ABLOY Group brand
Mark Center
for 2-1/8" Hole
Bore 1" dia.
Hole Second
1-3/8" Thick Door
TAILPIECE
Cylinder Cap
in part without the express written permission of Yale Security Inc. is prohibited.
Drill 2-1/8" hole through both sides of
the door as shown and 1" dia. hole
into front face of the door. Be certain
holes are perpendicular.
Bore 2-1/8"
Hole First
Mark jamb exactly opposite centerline of latch hole. Bore two 1" dia.
Holes 7/32" above and below height line to a depth of 1-1/8". Mortise
for strike and box strike. Install and fasten four screws as illustrated.
NOTE:
Drill 1/8" dia. pilot holes for 3/4" long screws, and 5/32" dia. for
3" long screws.
Long screws next
to door stop
7/32"
7/32"
WOOD JAMB
Tailpiece
Spring Pin
Insert deadbolt in hole, keeping it
parallel to face of the door and
scribe line around face plate.
Remove deadbolt and chisel out
scribed area to depth of 5/32" or
until face is flush with door edge.
Insert deadbolt and fasten with two
deadbolt screws (#8-32 x 3/4").
Deadbolt needs to be
extended at all times
during installation.
Fasten strike with
3/4" long screws.
Strike Box
404
Strike
METAL JAMB
Double Cylinder
Tailpiece Configuration
Tailpiece
80-YMD1-0120-999 Rev A
2
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