Steelcase 3 Series User manual

Series 3 AdjusTable Height Tables
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
©2015 Steelcase Inc.
Grand Rapids, MI 49501
U.S.A.
Printed in U.S.A.
®
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Tools required:
#2 Square
Drive Bit
Bit Holder
Power Drill
Allen Wrench-M3
10mm & 14mm
Wrench
Ratchet with
10mm Socket
Adjustable Wrench
Allen Wrench-2.5mm
(Provided)

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Overview of Assembly Process
1) Decide on the table configuration.
2) Assemble 2-piece worksurface or bi-level mechanism, if applicable.
3) Attach legs to worksurface (with worksurface upside-down).
4) Assemble gearbox(es) and crank assembly.
5) Synchronize legs and add driveshaft(s).
6) Add stretcher(s) and decorative parts.
7) Flip table upright and test function.
8) Level and clean it up.
9) PLEASE LEAVE THESE INSTRUCTIONS, AND
THE USER GUIDE, IN AN OBVIOUS PLACE
FOR THE END USER AFTER ASSEMBLY.
TABLE OF CONTENTS:
3
4
5
5
6
7
7
8
9
10
10
10
11
12
12
13 through 16
17 & 18
19
20 & 21
22 through 27
Lets Get Started!............................................................................................
Which Legs Go Where?.................................................................................
Determine Leg Positions on your Table.........................................................
Overhangs and Custom Leg Positions..........................................................
Mounting Legs to Worksurfaces....................................................................
Determine Crank Position on your Table.......................................................
Converting from Right-hand Crank to Left-hand Crank.................................
90oCorner Tables and P-Tables....................................................................
Left-Hand Tables with Crank on Left Side......................................................
For 90oTables and P-Tables..........................................................................
For 120oTables and Bubble-Jetty Tables......................................................
Installing the Drive Gearbox..........................................................................
Installing the Front Crank...............................................................................
Driveshafts and Leg Synchronization............................................................
Installing Driveshaft Stabilizers......................................................................
Installing Driveshafts......................................................................................
Installing Stretchers.......................................................................................
Finishing the Table Assembly.........................................................................
Appendix A: 2-Piece Worksurface Assembly.................................................
Appendix B: Installing a Keyboard Mechanism for Bi-Level Worksurfaces...
PAGE(S):

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1
2
Prepare a large open space to assemble the table.
1
Let's Get Started!
• Sweep the floor! Screws and
small parts can damage the
worksurface.
• Put down a CLEAN shipping
blanket to protect the
worksurface.
Unpack the worksurface and place on the shipping blanket upside-down.
2
• REMEMBER - You're looking at the UNDERSIDE of the worksurface.
Are you sure which side is left or right?
Assembling a 90o corner table with a 2-piece worksurface? Jump to
3
Appendix 'A' now.
Assembling a monitor-keyboard worksurface with a bi-level
mechanism? Jump to Appendix “B” now.
4
3
4

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Which Legs Go Where?
Leg Types:
10" Standard 21" Standard 26" Standard 10" Corner 21" Corner
NOTE: Extra studs.
NOTE: Extra studs.
23"D Rectangle 23"D Bullet 29"D Rectangle 29"D Bullet Concave Taper-Flat
21" Std. 21" Std. 26" Std. 26" Std. 26" Std. 26" Std.
21" Std. 21" Std.
40" 90o40" 90oBi-Level
26" Std. 26" Std.
46" 90o46" 90oBi-Level Rectangle Bi-Level 90o3-Leg
21" Std.
10" Corner
P-Table Bubble-Jetty120o
10" Std.
21" Std.
21" Std.
21" Corner
10" Std.
26" Std.
21" Std.
10" Std.

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RIGHT-HAND OVERHANG
LEFT-HAND OVERHANG
NO OVERHANGS
Determine Leg Positions on your Table:
• Many Series 3 tables allow multiple leg postions, providing flexibility to
maximize leg space, and allow overhangs for CPU slings and mobile
pedestal placement.
• The smallest tables may not allow for larger worksurface overhangs.
(The standard overhang is 1-1/4".)
• The largest tables may be capable of allowing dual 15" overhangs.
• Refer to the specification guide for the capabilities of your specific table.
(One on each side.)
• The mid-size tables may allow for a single 15" overhang.
Overhangs and Custom Leg Positions:
• There are pilot holes in worksurfaces that result in the standard
overhangs (1-1/4" and 15"), as well as a clearance at the back to
avoid pinch-points and provide for cable drop.
Side View:
1"
CABLE
AND
PINCH-POINT
CLEARANCE
Legs may be mounted on the worksurface
in locations other than the factory default,
provided that:
• The overhangs DO NOT exceed 15".
• All provided components still fit together (stretchers, driveshafts).
• No safety hazards are posed to the end users or installers.
• All screws are at least 1" from outside edges.
9"
CUSTOM
OVERHANG
1.769"
(NO CABLE / PINCH-POINT
CLEARANCE, BACK OF
FOOT FLUSH WITH BACK
OF WORKSURACE)
Standard Mounting Plate Positions:
(Bottom View)
Front of Wksf.
(User Edge)
Front of Wksf.
(User Edge)
Back of Wksf. Back of Wksf.
1-1/4"
OVERHANG
15"
OVERHANG
0.769"
OFFSET
0.769"
OFFSET
Front View:
15"
1-1/4"
OVERHANG

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Mounting Legs to Worksurfaces
CAUTION: All holes in the leg mounting plates MUST
be filled with screws. Failure to install all screws may
result in structural instability.
NOTCH IS ALWAYS
AT BACK OF LEG
(BACK OF TABLE)
Mounting Plate Worksurface Pilot Holes
= PILOT HOLE
= NO PILOT HOLE PROVIDED
Raise leg all the way up. This will allow access to the screws
adjacent to the inner column.
FOR EASIER
ACCESS
FOR EASIER
ACCESS
location, in the correct orientation. Attach each
leg with ten (10) of the provided #10 x 1.075 long
Align each leg with the pilot holes in the desired
screws. These screws have a special drill-point,
making them easy to drive in without a pilot hole.

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12
Unscrew the gearbox from the mounting bracket.
Relocate the gearbox to the other face of the
mounting bracket and reassemble.
1
2
Converting from Right-hand Crank to Left-hand Crank:
The gearbox and bracket assembly can be reconfigured, to allow placement of the crank handle on the
NOTE: In any configuration, cranking the handle clockwise will raise the table.
15"
15"
15"
left-hand side or right-hand side of the worksurface. The gearbox assembly is shipped from the factory set up for a
Determine Crank Position on your Table:
• Most tables allow the front crank to be located on either the user's
right-hand or left-hand side.
• Some 90o& 120otables do not have enough space on the
short side to allow the crank to function, so these tables are
limited to one crank location. Check the pilot holes in
your worksurface to be sure.
RH TABLE
WITH CRANK
ON RIGHT
LH TABLE
WITH CRANK
ON RIGHT
LH TABLE WITH
LIMITED SPACE FOR
CRANK ON RH
SIDE, SO CRANK IS
MOUNTED ON LEFT
right-hand crank configuration.

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90ocorner tables are available either as right-hand or left-hand tables.
90oCorner Tables and P-Tables
1) Orientation of center leg
In order to go from right-hand to left-hand configurations, four (4) items must be changed:
2) Placement of stretchers
3) Configuration of drive gearbox (See page 7)
4) Configuration of intermediate gearbox (See page 9)
The gearboxes ship from the factory set up for right-hand tables with the crank on the right-hand side of the table.
Orientation of the center leg and placement of stretchers are controlled by the installer.
Equal-Sized and Right-Hand Tables with crank on right side (Factory Default)
CRANK (USER’S RH SIDE)
(TURN CLOCKWISE TO
RAISE TABLE)
INTERMEDIATE
GEARBOX
DRIVE GEARBOX
"A" FACES IN
CENTER LEG
SPECIAL STRETCHER
LONG SIDE
ON RIGHT
SHORT SIDE
ON LEFT
NOTE: Equal-Sized 90oand Equal-Sized 120oCorner Tables are designed as right-hand tables by default.
10" and 21" corner legs are marked with "A" and "B" labels.
The correct letter must be visible per the diagram.
Otherwise, the center leg would go UP when the other legs would go DOWN, and vice-versa.

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CRANK (USER’S LH SIDE)
(TURN CLOCKWISE TO
RAISE TABLE)
DRIVE GEARBOX
LONG SIDE
ON LEFT
SHORT SIDE
ON RIGHT
Left-Hand Tables with Crank on Left Side
"B" FACES IN
CENTER LEG
SPECIAL
STRETCHER
INTERMEDIATE
GEARBOX
Left-Hand Table
Application
Right-Hand Tables
Application
(factory default)
Equal-Sized and
NOTE: Crank can still be placed on either right-hand
or left-hand side, regardless of whether it is a
left-hand or right-hand table.
3
1
Changing Orientation of Center Leg and Placement of Stretchers:
2
See Diagram Above.
NOTE: Subsequent pages of this document show assembly of the
right-hand table configuration.
Changing Orientation of Drive Gearbox: See Page 7.
BLACK
BLUE
BLACK
BLUE

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Attach the intermediate gearbox near the
center leg using the hardware provided.
In the center leg, insert the short (4") driveshaft,
and attach a universal joint to each end. Tighten
set screws on the universal joints with the provided
hex wrench.
UNIVERSAL JOINT
UNIVERSAL JOINT
4" DRIVESHAFT
For 90oTables and P-Tables
For 120oTables and Bubble-Jetty Tables
Attach gearbox assembly to leg mounting plate with provided
hardware. DO NOT tighten yet. Assemble loose (allow to hang).
Installing the Drive Gearbox
NOTE: To switch crank handle
position from right-hand to
Front-Crank Gearbox
Top-Crank Gearbox
left-hand, see page 7.
Right-Hand Table
Shown This View)
(Equal-Sized or
SHORT SIDE
LONG SIDE

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For front-crank tables, mount crank handle to worksurface
1
Insert the crank driveshaft through the back of
2
Installing the Front Crank
near the gearbox using the provided pilot holes.
1
the gearbox into the crank handle.
NOTE: Be sure the driveshaft is pushed into the back of the
crank handle all the way.
SET SCREW
CRANK
DRIVESHAFT
2
PUSH IN
ALL THE WAY
Tighten set screw lightly, to avoid
stripping the aluminum threads.
1-3/4"

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Driveshafts and Leg Synchronization
• Series 3 tables are purely mechanical, and the legs must be
synchronized mechanically.
• Before inserting the driveshafts, ensure ALL LEGS are pushed
ALL THE WAY DOWN (fully compressed).
Installing Driveshaft Stabilizers
• Tables with 3-leg bases require driveshaft stabilizer brackets. To install these, remove
collar/set screw assembly from one end of the driveshaft center tube, slide the
stabilizer brackets over the tube, and replace the collar/set screw assembly.
a
bc
DRIVESHAFT
STABILIZER
BRACKET
Right-Hand Table
Shown This View)
(Equal-Sized or

Page 13 of 27
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2
2
Installing Driveshafts
LONG PARTS
SHORT PARTS
On 3-leg tables, be sure to use the correct length of drive shaft
for the particular side of the worksurface. Use longer components
on the long side, and shorter components on the short side,
where applicable.
If the hexagon openings are not perfectly aligned, grip
1
the driveshaft with an adjustable wrench and rotate
NOTE: DO NOT pound the driveshafts through with a
hammer. This will mushroom the end of the driveshaft.
slightly, until the driveshaft slides through with ease.
FOR LONG SIDE
FOR SHORT SIDE
1
Place cap nut on a flat, hard surface and push driveshaft into it.
Feed driveshaft through leg, from outside, until cap nut bottoms out on leg.
3
3
Right-Hand Table
Shown This View)
(Equal-Sized or
Note: Set screw must be loosened slightly
to allow insertion of shaft. Set screw to be
tightened very tightly after all shafts are in
final position. See step #7.

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Driveshafts are retained using cap nuts,
Installing Driveshafts (cont.)
2-leg tables, 120otables & bubble-jetty
tables require one cap nut mounted
which grip the driveshaft ends and prevent
them from backing out of the legs.
outside of each leg. The driveshaft
assembly is thus retained in both
2-Leg Tables:
120oTables:
CAP NUT
(with plastic cover)
CAP
NUT
CAP
NUT
CAP
NUT
CAP
NUT
2-Leg Tables & 120oTables
3-leg tables & P-Tables require one cap nut
mounted outside of each leg, plus a push
nut mounted on the inside of the leg that is
perpendicular to the other 2 legs, i.e. across
P-Tables:
CAP NUT PUSH NUT
(with plastic cover)
CAP
NUT
CAP
NUT
90oTables & P-Tables
from the intermediate gearbox.
90oTables:
CAP NUT
CAP
NUT
CAP NUT
INTERMEDIATE
GEARBOX
INTERMEDIATE
GEARBOX
directions.
PUSH
NUT
PUSH
NUT

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Installing Driveshafts (cont.)
To install the push nut, follow steps on previous page.
Locate correct location per above diagrams, then
Using a adjustable wrench or pliers to assist, push the
push nut all the way down the length of the driveshaft
until it meets the inside of the lifting column.
install push nut on free end of driveshaft.
5
6
With all table legs pushed all the way down,
4
insert driveshafts through gearboxes and legs.
5
6
Steps 4, 5, & 6 (below) are for 90oTables and P-Tables only.
4
Right-Hand Table
Shown This View)
(Equal-Sized or

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Installing Driveshafts (cont.)
Ensure all driveshafts are inserted into driveshaft
tubes. Tighten set screws very tightly with
a 3mm hex wrench.
Tighten the gearbox attachment bolt.
Front-Crank Gearbox Top-Crank Gearbox
Where applicable, attach driveshaft stabilizer brackets
with two (2) screws each, using provided pilot holes.
7
7
8
9
8
8
9

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NOTE: On 3-leg tables, be sure to use the correct length
Installing Stretchers
of stretcher for the particular side of the worksurface.
Use longer components on the long side and shorter
1
Sub-assemble stretchers as shown. For 90o
1
stretcher, place the decorative cover over the
small tube first, then insert into large tube.
NOTE: Wherever possible, ensure that the set
screws face the floor after table is assembled
and flipped upright.
Straight:
SET SCREWS TO
FACE THE FLOOR.
90º:
components on the short side, where applicable.
LONG PARTS
SHORT PARTS
FOR LONG SIDE
FOR SHORT SIDE
Right-Hand Table
Shown This View)
(Equal-Sized or

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Installing Stretchers (cont.)
For 120oand bubble-jetty tables, mount the center leg bracket
2
as shown such that the set screws face the floor. Add
For all other stretchers, mount the ends to the leg using two (2)
3
nuts per connection. Place decorative covers over each end
after assembly.
3
decorative cover after tightening the two (2) M6 nuts.
Gently tighten all set screws between stretcher tubes.
4
4
Straight: 90º:
M6 NUTS
M6 NUTS
2
SET SCREWS TO
FACE THE FLOOR.
M6 NUTS
3

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Ensure all decorative trim caps are
1
Finishing the Table Assembly
Double-check that all nuts, bolts, screws, cap
2
nuts and set screws are securely attached.
For top-crank tables, insert grommet into hole in top
of worksurface. Ensure the top-crank handle is
unpacked, clean and ready for use. Make sure to leave
5
securely attached.
Test the function of each completed table. Cycle the table
3
all the way up and down to test for correct function.
the top-crank handle with the table for the end-user.
PLEASE LEAVE THESE INSTRUCTIONS, AND
THE USER GUIDE, IN AN OBVIOUS PLACE
FOR THE END USER AFTER ASSEMBLY.
Finally, adjust glides to level the table,
6
both left to right and front to back.
STRETCHER CAPS
1
ASSEMBLY DIRECTION
AND USER GUIDE
3
ASSEMBLY DIRECTION
AND USER GUIDE 6
46
CAP NUT
4

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Position top pieces upside down on the assembly surface
1
Appendix A: 2-Piece Worksurface Assembly
and align with wood spline (or biscuits) provided.
Install draw bolts and tighten with 5/16" or 7/16" open end
2
wrench. Attach two (2) v-channels using sixteen (16) screws
per channel.
1
2
Optional Biscuits
SCREWS V-CHANNELS
DRAW
BOLTS
SPLINE