Steelcase Criterion User manual

Page 1 of 6
939504754 Rev C
®
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
©2003 Steelcase Inc.
Grand Rapids, MI 49501
U.S.A.
Printed in U.S.A.
Criterion®Arm Replacement Package
Torx #25 Bit
#2 PHILLIPS
#4 PHILLIPS
Wave Washer Washer
Wave Washer Washer
Bit Holder

Page 2 of 6
939504754 Rev C
Arm Cap Replacement
1. Flip the chair to an upside down position.
2. Remove the (2) screws that are located
towards the front and back edges of the arm
removing the arm cap. Repeat for other side.
Pay close attention to which is right and left side
if doing both sides. Radius on arm will go
towards the seat side of the chair.
3. Reattach arm cap with screws. Do not over
torque.

Page 3 of 6
939504754 Rev C
Height Width Pivot Arm
Replacement
1. Flip the chair to an upside down position.
2. Remove the (2) screws that are located
towards the front and back edges of the arm
removing the arm cap.
3. While holding the arm firmly, use a #4
phillips screwdriver or screw gun to remove the
large screw with black head. Repeat for other
side. When doing both sides, pay close
attention to which is the right and left side.
4. When screw is fully detached, remove arm.
5. Remove assembly screws using a #25 torx
head screw bit with screw gun. Unsnap detents
of lower cap from mounting block.
6. Carefully snapping detents of new lower cap
into mounting block, remount block with
assembly screws and torque to 80 - 100 inch
lbs.
7. Reattach new arm (again checking to make
sure right and left are on correctly) using screw.
Torque screws to 30 - 90 inch lbs.
8. Reattach arm cap with screws. Radius on
arm cap will be toward the seat side of the chair.
2
3
5

Page 4 of 6
939504754 Rev C
Gear Cover Replacement
1. Flip the chair to an upside down position.
2. Remove small silver screw on the underside
of the arm which will be a #2 phillips drive flat
head screw.
3. Remove cover by carefully pulling in an
outward motion.
4a. For old style, place new cover on slight
angle and insert lip under arm cover and gently
push, snapping into place being careful not to
break plastic lip and cover; reinsert screw.
4b. For new style, push cover on and replace
#2 phillips drive flat head screw.
NOTE: When replacing covers, watch for right
and left hand if replacing both sides.
2
3
LIP

Page 5 of 6
939504754 Rev C
Lower Cap Replacement
1. Flip the chair to an upside down position.
2. While holding the arm firmly, use a #4 phillips
screwdriver or screw gun to remove the large
screw with black head. Repeat for other side.
When doing both sides, pay close attention to
which is the right and left side.
3. When screw is fully detached, remove arm
being careful to note order in which the washers
come off.
4. Remove assembly screws using a #25 torx
head screw bit with screw gun. Unsnap detents
of lower cap from mounting block.
5. Remove old lower cap.
6. Carefull take new lower cap and tilt slightly to
align tabs with small holes in trigger assembly
and gently push, snapping into place.
7. Carefully snapping detents of new lower cap
into mounting block, remount block with
assembly screws and torque to 80 - 100 inch lbs.
8a. For old style, reassemble arm cap to
mounting block. Torque screw to 100 - 120 inch
lbs.

8b. For new style, reassemble arm cap to
mounting block. Torque screw to 30 - 90 inch lbs.
2
6
4
HOLES
3

Page 6 of 6
939504754 Rev C
Arm Assembly Package
1. Flip the chair to an upside down position.
2. Remove the (3) screws holding the arm
assembly in place.
3. Remove the arm assembly.
4. Align the screw holes of the new arm
assembly. Insert the screws and tighten per
the tightening pattern shown.
2
Torque Tightening Pattern
(Torque to 115 inch lbs.)
Tighten this
screw 1st
Tighten this
screw 2nd
Tighten this
screw 3rd
Re-tighten this
screw 4th
4