BEST Installation Instructions For 83K–85K Cylindrical Locks 8K T56066a

User Manual: BEST Installation Instructions for 8K Cylindrical Locks Installation

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BEST ACCESS SYSTEMS

Indianapolis, Indiana

1

Preparing the door

For factory prepared doors only

1 Install the latch so that the bevel on the latchbolt faces

the strike lip.

2 Adjust the outside rose so that the chassis is centered

in the door. Install the chassis from the outside of the

door.

3 Install the inside rose, rose ring, knob, and strike plate.

Caution: If you use fabricated hollow metal doors,

determine whether the doors are reinforced

enough to support the lock. If the door reinforce-

ment is not adequate, consult the door manufac-

turer for information on proper reinforcement.

Note: For detailed installation instructions, see the fol-

lowing steps.

1Position template

1 Fold the template and place it in position on the high

edge of the door bevel. (See Figure 2.)

2 Mark the drill points.

Note: Suggested height from floor to centerline of the

lock is 40 5/16″. If steel frames are used, the latch center-

line must be in line with the center of the strike prepara-

tion.

Figure 1 Overview diagram

Rose ring

Rose

Latch

Deadlock-

ing plunger

Bevel on

latchbolt

Lock

chassis

Figure 2 Marking the drill points

High edge of

door bevel

Installation Instructions

for 83K–85K Cylindrical Locks

Installation Instructions for 83K–85K Cylindrical Locks

BEST ACCESS SYSTEMS

Indianapolis, Indiana T56066/Rev A 1797947 ER-7991-12 May 2003

2

Preparing the lock

2Bore holes and install latch

1 Bore a 2 1/8″ diameter hole from both sides of the

door to the center of the door. (See Figure 3.)

2 Drill a 1″ diameter hole from the edge of the door that

intersects the 2 1/8″ hole.

3 Mortise the door edge for the latch face.

4 Install the latch and check the door swing. Latch tabs

should project into the 2 1/8″ diameter hole.

See Task 5, Install chassis.

3Remove inside knob and trim

For inside knobs with button or blank face:

1 Insert the spanner wrench tip into the knob keeper

hole and depress the keeper. (See Figure 4.)

2 Slide the knob off.

3 Unthread the rose ring and remove the rose.

For keyed inside knobs:

1 Remove the core and throw member (if not already

removed). For instructions on removing the core, see

Task 9, Install core.

2 Insert a screwdriver into the figure-8 core hole and

into the keeper. (See Figure 4, top.)

3 Using the edge of the screwdriver, press down on the

keeper and slide the keyed knob off of the sleeve.

Caution: You will not be able to remove the knob

if you put the screwdriver blade too far past the

keeper.

4Center lock in door

Check to see if the lock retractor is centered in the door.

■If centered, proceed to Task 5, Install core.

■If not centered, use the door as a reference and center

the retractor in the door. Do this by pulling the rose

locking pin and rotating the outside rose in or out. (See

Figure 5.)

Caution: Center the retractor before proceeding

to Step 5, Install chassis.

Figure 3 Boring holes and installing the latch

2 1/8″ dia hole

1″ dia hole

Latch tabs

Latch face

Figure 4 Removing inside knob and trim

Figure-8 core hole

Knob keeper

Knob keeper spring

Insert screwdriver

blade here

Spanner wrench

Knob keeper hole

Figure 5 Marking the centerlines

Rose

Retractor

Pull pin to

rotate rose

Installation Instructions for 83K–85K Cylindrical Locks

BEST ACCESS SYSTEMS

Indianapolis, Indiana

3

Installation Instructions for 83K–85K Cylindrical Locks

Installing the lock

Note 1: Make sure the locking pin locks back into the

rose liner.

Note 2: Locks with standard trim will fit doors 1 3/8″ to

2 1/8″ thick. Locks with ‘E’ trim will fit doors 2 1/4″ to 3″

thick.

5Install chassis

■After the retractor has been centered, and with the

latch in place, install the chassis from the outside of

the door. Make sure the latch tabs fit into the chassis

frame and the latch tailpiece fits into the retractor.

(See Figure 6.)

6Install inside rose and knob

Note: For lead lined locksets, slide the lead shield (not

shown) over the sleeve and into the 2 1/8″ hole.

1 Slide the rose over the sleeve, then thread the rose

ring onto the threaded hub and tighten snugly with

the spanner wrench.

For non-keyed inside knobs:

2 Align the knob keeper hole with the knob keeper in

the sleeve as shown in Figure 7. Firmly push the knob

on until seated.

For keyed inside knobs:

2 Align either of the knob driver slots with the knob

driver in the sleeve as shown in Figure 8. Firmly push

the knob on until seated.

Figure 6 Installing the chassis

Chassis frame

Latch tab

Latch tailpiece

Retractor

Chassis

Enlarged view

Figure 7 Installing the inside knob and rose

Spanner wrench

Rose

Rose ring

Sleeve

Knob keeper

Knob keeper hole

Figure 8 Installing the inside keyed knob

Knob driver slots

Knob keeper

Knob driver

Installation Instructions for 83K–85K Cylindrical Locks

BEST ACCESS SYSTEMS

Indianapolis, Indiana T56066/Rev A 1797947 ER-7991-12 May 2003

4

Completing the installation

7Install strike plate

1 Mortise the door jamb to fit the strike box and strike

plate. Make sure to align the strike plate and latchbolt

centers.

Caution: The deadlocking plunger of the latchbolt

must not enter the strike plate. The plunger deadlocks

the latchbolt and prevents forcing the latch when the

door is closed. Excessive gap may reduce security and/

or cause malfunction of the latchbolt assembly. A maxi-

mum door gap of 1/8″ is recommended.

2 Insert the strike box and secure the strike plate with

the screws provided.

8Check handing

Note: When Best 8K locksets are properly installed, the

figure-8 hole must be in the upper half of the knob. If it is

not, change the hand of the lock.

To change the hand of the lock:

■Rotate the knob face 180 degrees so that the figure-8

is in the upper half of the knob.

9Install core

For 6-pin core users only: Slide the spacer — sup-

plied with your 6-pin cores — over the 7-pin throw

member (see Figure 11, top right).

Note: If you have ordered 6-pin cores, you will get one

spacer per core with your order. Spacers are not supplied

with locks.

1 Insert the throw member (or throw member and

spacer) into the back of the core (see Figure 11, top).

2 Put the control key into the core and turn the key 15

degrees clockwise.

3 Put the core and throw member into the knob with the

control key (see Figure 11, bottom).

4 Turn the key 15 degrees counterclockwise and remove

the key.

Caution: Since the control key is a high-security

key, make sure to keep it protected.

Figure 9 Installing the strike

Door jamb

Strike box

Strike plate

Figure 10 Turning the knob face to correct

the handing of the lock

Incorrect Correct

Rotate Knob face

Figure-8 hole

1

2

Figure 11 Installing the figure-8 core

BEST

BEST

7-pin core 6-pin core

Spacer

Control

key in

core