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INSTALLATION INSTRUCTIONS FOR RU–SERIES 

RETROFIT EXTRA HEAVY DUTY UNIT LEVER LOCKSET

IMPORTANT:

  

THIS LOCK IS FOR 1-3/4” (45MM) THICK DOORS ONLY.

THE LOCK IS FACTORY HANDED FOR USE ON RIGHT HAND (RH) OR LEFT HAND (LH) DOORS.  SEE 
STEP 9 FOR 

FIELD REVERSING

 THE LOCK TO RHR OR LHR DOORS.  FOR FUNCTIONS RU371, RU381, 

RU561 & RU571, SEE STEP 14 FOR STD CYLINDER & STEP 15 FOR IC CORE TIMING INSTRUCTIONS.

STEP 1 

EXAMINE DOOR PREPARATION AND HANDING

These instructions are applicable to the two most common door prepa-
rations – Yale Mono Lock and Corbin Russwin Unilock – as shown in 
the illustration on the right. If your door preparation is different, 

S

TOP

!

 

You need to contact the factory for instructions speci

fi

cally for your 

door preparation.

STOP! 

Ensure that the lock handing matches the door handing and 

bevel. If it does not match, refer to Step 9 before continuing.

Outer Trim Assembly

Interchangeable Core Cylinder

Set Screw

1/4-20 x 1/4”

Mounting Screws

#10-32 x 1”

Flange Nut

Inner Lever

Rose

Inner Trim

Assembly

Latch Mounting Screws

#8-32 x 1/2”

Inner Mounting

Plate

Chassis Assembly

Latch Assembly

Outer Trim Assembly

Standard Cylinder

LEFT HAND REVERSE SHOWN

OUTSIDE

INSIDE

INSIDE

OUTSIDE

DOOR HANDS DETERMINED FROM OUTSIDE

LEFT

 HAND

RIGHT

 HAND

LEFT

 HAND REVERSE

RIGHT

 HAND REVERSE

1

1-1/4”

1

3-1/2”

2

3-5/8”

1
2

CL

of Door

Low Side of Bevel

Beveled

1/8” in 2”

2-3/4”

Backset

7/16” Thru

2 Plcs

1

5/32” Dia

1

Applies to Yale Mono Lock

2

Applies to Corbin Russwin Unilock

1-1/4”

1-3/4”

2-1/2”

03153400070

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