Steelcase 454 Concentrx Plus Chair – Replacing Chair Control & Column Assembly Instructions

Brand: Steelcase

Model: 454 Concentrx Plus Chair – Replacing Chair Control & Column

Category: Office & computer chairs

Type: Assembly Instructions

This manual is also suitable for

454 Concentrx Plus Chair - Replacing Chair Control & Column

Page 1 of 5

939501155 Rev A

Replacing Chair Control and Column Assembly

on all Concentrx® Plus Chairs

If you have a problem, question, or request, call

your local dealer, or Steelcase Line 1 at

888.STEELCASE (888.783.3522)

for immediate action by people who want to help you.

(Outside the U.S.A., Canada, Mexico, Puerto Rico,

and the U.S. Virgin Islands, call: 1.616.247.2500)

Or visit our website: www.steelcase.com

Grand Rapids, MI 49501

U.S.A.

Printed in U.S.A.

Posture Chair:

454-560

454-561

454-562

454-562V

454-560M

454-561M

454-562M

454-562MV

454-570

454-571

454-572

454-572V

454-570M

454-571M

454-572M

454-572MV

These directions apply to the following Models:

Posture Stool:

454-760

454-761

454-762

454-762V

454-770

454-771

454-772

454-772V

NOTE:

For replacement of the Twist-O-Matic refer to

Assembly Directions #939501013.

For replacement of the Pneumatic assembly

refer to Assembly Direction #939501474.

Page 2 of 5

939501155 Rev A

Chair Base

Standard Base Stool Base

Upholstered Seat

#8 x 1-1/2"

#8 x 1-1/8"

#8 x 3/4"

1. Place chair on work bench in an inverted

position. Remove retainer ring from center

column of posture chair or hex nut from 8"

into center column of posture stool and retain.

Lift chair base off center column.

2. Remove (7) screws and the outer seat shell

from upholstered seat.

Page 3 of 5

939501155 Rev A

Adjustment Handle

Outer Back Shell

#8 x 1-1/2"

#8 x 1-1/8"

Upholstered Back

1/4-20 Bolts

Upholstered Seat

3. Remove (5) screws, adjustment handle

and outer back shell from upholstered back.

4. Remove (4) 1/4-20 bolts, hex nuts and

upholstered back upright from chair control.

Page 4 of 5

939501155 Rev A

5. Remove (4) 1/4-20 bolts, hex nuts and

upholstered back upright from chair control.

Page 5 of 5

939501155 Rev A

Pneumatic

Button

Pneumatic

Pushrod

Adjustment Screw

Center Button on

Pneumatic Cylinder

FOR PNEUMATIC CHAIR CONTROLS ONLY

NOTE: Make sure that the new chair control assembly has

a pneumatic button color coordinated to that of the

discarded control assembly.

6. Position the chair control as shown below. Check the

movement of the chair control button. If the control button

has any movement in excess of 1/16" before contact is

made with the center button on the pneumatic cylinder, the

following adjustments are to be made:

A. Rotate the adjustment screw clockwise using an allen

wrench until it contacts the center button.

B. Check movement of the control button. If it moves from

0" to 1/16" before contact is made, adjustment is correct.

7. To re-assemble chair with new chair assembly in place

repeat Steps 1 - 5 in reverse order.

NOTE: It is essential that lubricant be evident all around the

outside surface of chair control column. If no lubricant is

evident apply as noted above using either Amoco Food

Machinery or Brush Lube.

8. Place chair upright on floor, stand on the base and

pull upward on seat assembly to make certain the center

column assemblies (Twist-O-Matic or Pneumatic) are

properly positioned and secured. Check for swivel action,

back adjustment and seat height adjustment.

Steelcase 454 Concentrx Plus Chair – Replacing Chair Control & Column Assembly Instructions

Brand: Steelcase

Model: 454 Concentrx Plus Chair – Replacing Chair Control & Column

Category: Office & computer chairs

Type: Assembly Instructions

This manual is also suitable for

454 Concentrx Plus Chair - Replacing Chair Control & Column

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Steelcase 454 Concentrx Plus Chair – Replacing Chair Control & Column Assembly Instructions

This manual is also suitable for

Steelcase 454 Concentrx Plus Chair – Replacing Chair Control & Column Assembly Instructions

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