Tektronix products are covered by U.S. and foreign patents, issued and pending. Informat ion in this publication supercedes
that in all previously published material. Specifications a nd price c hange privileges reserved.
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
Contacting Tektronix
Tektronix, Inc.
14200 SW Karl Braun Drive
P.O. Box 500
Beaverton, OR 97077
USA
For product information, sales, service, and technical support:
HIn North America, call 1-800-833-9200.
HWorldwide, visit www.tektronix.com to find contacts in your area.
WARRANTY
Tektronix warrants that the products that it manufactures and sell s will be free from defects in materials and workmanship
for a period of one (1) year from the date of shipment. If a product proves defective during this warranty period, Tektronix,
at its option, either will repair the defective product without charge for parts and labor, or will provide a replacement in
exchange for the defective product.
In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of the
warranty period and make suitable arrangements for the performance of servic e. Customer shall be responsible for
packaging and shipping the defective product to the service center designated by Tektronix, with shipping charges prepaid.
Tektronix shall pay for t he re turn of the product to Customer if the shipment is to a location within the country in which the
Tektronix service center is located. Customer shall be responsible for paying all shipping charges, duties, taxes, and any
other charges for products returned to any other locations.
This warranty shall not apply to any defect , fa ilure or damage caused by improper use or improper or inadequate
maintenance and care. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting
from attempts by personnel other than Tektronix representatives to install, repair or service the product; b) to repair
damage resulting from improper use or connection to incompatible equipment; c) to repair any damage or malfunction
caused by the use of non--Tektronix supplies; or d) to service a product that has been modified or integrated with other
products when the effect of such modification or integration increases the time or difficulty of servicing the product.
THIS WARRANTY IS GIVEN BY TEKTRONIX IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED.
TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX RESPONSIBILITY TO REPAIR OR REPLACE
DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR
BREACH OF THIS W ARRANTY. TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT,
SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE
VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.
Table of Contents
General Safety Summaryii...................................
Figure 1: Identification of Small Parts2........................
Figure 2: The K420 Bench Cart4..............................
Figure 3: Preparing the Strut for Base Assembly6................
Figure 4: Building Leg Assemblies7...........................
Figure 4a: Aligning the Leg Assemblies and the Strut8............
Figure 5: Installing the Casters9..............................
Figure 6: Preparing the Drawer Shelf11.........................
Figure 7: Aligning the Drawer Shelf12..........................
Figure 8: Installing the Drawer13..............................
Figure 9: Installing the Press--Stud Retainers14...................
Figure 10: Preparing the Long Rails15..........................
Figure 11: Long Rail Alignment Marks on the Leg Assemblies16....
Figure 12: Preparing the Tilt Shelf with Handle17................
Figure 13: Aligning the Tilt Shelf with Handle17..................
Figure 14: Installation of Tilt Shelf Knobs18.....................
Figure 15: Installing the Leg Caps20............................
Figure 16: Installing the Nylon Straps with Buckles21.............
K420 Bench Cart Instructions
i
General Safety Summary
Observe these safety precautions when using the K420 Bench Cart.
Keep the K420 Level
Keep the K420 level at all times, especially when it is loaded with instruments.
The cart is designed to be very stable, but it can fall over if tilted to extremes.
Observe this precaution especially in these cases:
HWhen rolling the cart across uneven floors.
HWhen rolling the cart through doorways with uneven thresholds.
HWhen lifting the cart wheels over cables.
HWhen rolling the cart up or down ramps.
Do Not Overload Shelves
Do not put more weight on any cart shelf than is listed in the specifications.
Load the top of the cart evenly.
Observe Electrical Safety
All parts of the cart must be treated as electrical conductors, even if they appear
to be nonconducting. Do not rely on the casters to provide insulation between the
cart and the surface it stands on. Conversely, do not rely on the casters to provide
a conductive ground path for the cart.
T est the Stability of Custom Configurations
Changes in shelf location and loading can affect the balance of the cart. If you
arrange the shelves differently from the configuration described in this manual,
test the cart carefully for stability before using it.
ii
K420 Bench Cart Instructions
Preface
Contacting Tektronix
Phone1-800-833-9200*
AddressTektronix, Inc.
Department or name (if known)
14200 SW Karl Braun Drive
P.O. Box 500
Beaverton, OR 97077
USA
Web sitewww.tektronix.com
Sales support1-800-833-9200, select option 1*
Service support1-800-833-9200, select option 2*
Technical supportEmail: techsupport@tektronix.com
1-800-833-9200, select option 3*
6:00 a.m. -- 5:00 p.m. Pacific time
*This phone num ber is toll free in North America. After office hours, please leave a
voice mail message.
Outside North America, contact a Tektronix sales office or distributor; see the
Tektronix web site for a list of offices.
K420 Bench Cart Instructions
iii
Preface
iv
K420 Bench Cart Instructions
Introduction
Tools
The Tektronix K420 Bench Cart requires some assembly. This manual tells how
to assemble and use the cart.
You can assemble the K420 Bench Cart by yourself, but it is easier if you have
another person to help you.
You will need a large flat area to assemble the cart. The area should be level and
large enough to move the various parts into place. A carpeted floor space is ideal.
You will need a 3/4 inch (19 mm) open--end wrench, or an adjustable wrench that
can be adjusted to that size.
Other tools are included with the K420 Bench Cart. These include a 5/32 inch
Allen wrench, a 3/16 Allen wrench, a 1/8 inch Allen wrench, and a circular
bubble level.
Parts Identification
The large pieces of the K420 Bench Cart are packed separately in the shipping
carton. A bag of small parts is packed in a box with these instructions. The
included tools are also packed in this bag. Figure 1 on page 2 shows the small
parts you will be using.
Table 1 on page 3 lists all the parts needed to assemble the cart, including the
large pieces and assemblies. Take an inventory now to familiarize yourself with
the parts for the assembly process.
K420 Bench Cart Instructions
1
Introduction
Weld Nut
1/4-20 CapHead Screw ,
1/2 inchlength
1/4 inch Tooth Lockwasher
1/2 inch Split Lockwasher
3/16 inch AllenWrench
3/4 inch Steel Washer
1/4-20
1/2 inchlength
Press-On
ProbeHolder
ShoulderBolt,
LongRail
1/4-20Set Screw
1/8inch thick Kevlar
(plastic) Washer
5/32 inch AllenW rench
Circular Bubble Level
Oval Knob
Press-Stud Retainer
1/8inchAllenWrench
Figure 1: Identification of Small Parts
2
K420 Bench Cart Instructions
Table 1: Parts List
QuantityDesscription
Large Parts
2Locking Casters
2Non--Locking Casters
1Tilt Shelf with handle
1Drawer Shelf
1Drawer
1Strut
2Leg assemblies
2Leg Caps
2Nylon Straps with buckles
Small Parts in Bag
41/2 inch Split Lockwashers
Introduction
81/4--20 Cap Head Screws, 1/2 inch length
21/4--20 Shoulder Bolts, 1/2 inch length
2Oval Knobs
61/8 inch thick Kevlar (plastic) Washers
23/4 inch Steel Washers
81/4 inch Tooth Lockwashers
10Weld Nuts
2Long Rails
21/4--20 Set Screws
2Press--Stud Retainers
1Press--On Probe Holder
Small Tools in Bag
13/16 inch Allen Wrench
15/32 inch Allen Wrench
11/8 inch Allen Wrench
1Circular Bubble Level
K420 Bench Cart Instructions
3
Introduction
Tilt Shelf with handle
Drawer Shelf
Leg Cap
Drawer
Leg Assembly
Strut
Non-Locking Caster
Front
Locking Caster
Figure 2: The K420 Bench Cart
4
K420 Bench Cart Instructions
Base Assembly
Begin assembling the cart by joining the leg assemblies using the strut, and then
putting on the casters. You will use these parts:
H2 Locking Casters
H2Non--LockingCasters
H2 Extrusions
H2Legs
H4 Bumpons
H41/4--20x2inchScrews
H4 1 inch Fender Washers
H13/16HexKey
H41x3inchEndCaps
H1Strut
H4 1/2 inch Split Lockwashers
H4 1/4 20 Cap Head Screws, 1/2 inch length
H4 1/4 inch Tooth Lockwashers
H4WeldNuts
You will use a 3/4 inch (19 mm) wrench or adjustable wrench, and the 3/16 inch
Allen wrench included with your cart.
1. Prepare the strut as shown in Figure 3. Position the weld nut with the raised
threaded flange toward the strut. Leave each screw assembly loose; do not
screw the weld nut onto the cap head screw more than one full turn.
K420 Bench Cart Instructions
5
Base Assembly
Front
WeldNut
1/4 inch Tooth Lockwasher
1/4-20 Cap Head Screw
Figure 3: Preparing the Strut for Base Assembly
2. On each leg assembly, observe that there is a small, clear, plastic button
(bumpon) on the horizontal leg bar. This button is on the inside of the cart, at
the back. Position the leg assemblies as shown in Figure 4. Leave a space
between the leg assemblies about equal to the length of the strut.
6
K420 Bench Cart Instructions
Base Assembly
K420 Bench Cart Instructions
Figure 4: Building Leg Assemblies
3. Orient extrusion so the end with threaded holes is on the bottom If shelf
position pencil marks are present on one of the slotted sides of the extrusion
there should be one mark 13 inches from this end. You will build two leg
assemblies.
7
Base Assembly
4. Place long screw through washer and insert through bottom of leg tube (side
with large caster nuts) and into the extrusion. Screw will extend through top
of leg tube to receive threaded ends of extrusion. Hand tighten with hex key.
CAUTION. Leg tube can be crushed if screw is over tightened.
Max torque is 3--6 ft--lbs. Repeat for second assembly.
5. Apply two bumpons to the top of each leg as shown in the illustration. They
go on the side of the extrusion with pencil marks for each assembly.
6. Install end caps into end of each leg. Don’t install end caps into extrusions.
7. Position the strut horizontally between the leg assemblies, as shown in
Figure 4a, with the open side of the strut to the back. Line up the weld nuts
with the back groove in the leg assemblies.
Clearplastic buttons
(oneon each leg assembly)
Front
Figure 4a: Aligning the Leg Assemblies and the Strut
8
K420 Bench Cart Instructions
Base Assembly
8. Slide the strut down to the base of the cart, adjusting the distance between
the leg assemblies as needed. When complete, make sure the strut is resting
tight against the clear plastic buttons on the leg assemblies.
9. Use the 3/16 inch Allen wrench to tighten the cap head screws. Tighten them
first snugly, then go back and tighten them firmly.
NOTE. If you have a torque wrench available, tighten these and all shelf screws
to 60 in.... lb (6.8 N.... m) torque.
10. Tip the cart onto its back as shown in Figure 5, resting it on the work surface
by the tops and backs of the leg assemblies.
11. Identify which casters are locking and which are non--locking. The locking
casters, which go on the front of the cart, have an extra tab that you step on
to lock the wheels.
Non-
Locking
Casters
Locking
Casters
1/2 inch Split
Lockwashers
Front
K420 Bench Cart Instructions
Figure 5: Installing the Casters
9
Base Assembly
12. On the locking casters, place a 1/2 inch split lockwasher on each threaded
shaft, then install the casters into the two front holes in the bottoms of the
leg assemblies. Tighten the casters only until they are snug using the 3/4
inch (19 mm) wrench.
13. On the non--locking casters, place a 1/2 inch split lockwasher on each
threaded shaft, then install the casters into the two back holes in the bottoms
of the leg assemblies. Tighten the casters only until they are snug.
14. Return the cart to the upright position.
10
K420 Bench Cart Instructions
Drawer Shelf and Drawer
Install a drawer shelf and drawer in the cart. Y ou will use these parts:
H1DrawerShelf
H1Drawer
H4 1/4 20 Cap Head Screws, 1/2 inch length
H4 1/4 inch Tooth Lockwashers
H4WeldNuts
H2 Press--Stud Retainers
You will use the 3/16 inch Allen wrench and the circular bubble level included
with your cart.
1. Prepare the drawer shelf as shown in Figure 6 by installing a cap head screw,
a tooth lockwasher, and a weld nut in each of the four side holes of the shelf.
Leave each screw assembly loose; do not screw the weld nut onto the cap
head screw more than one full turn.
Weld Nut
1/4 inch Tooth Lockwasher
1/4-20 Cap Head Screw
Figure 6: Preparing the Drawer Shelf
K420 Bench Cart Instructions
11
Drawer Shelf and Drawer
2. Position the drawer shelf horizontally between the leg assemblies, as shown
in Figure 7. Position the shelf so the open edge is to the front of the cart.
Front
12
Figure 7: Aligning the Drawer Shelf
3. Slide the drawer shelf down to into the position shown in Figure 8. (A light
pencil line has been marked on the insides of the leg assemblies at this
position.) Slide the drawer shelf slowly between the leg assemblies to avoid
scratching the paint. Use the circular bubble level to make sure the shelf is
level.
K420 Bench Cart Instructions
Drawer Shelf and Drawer
If you have another person helping you, that person can hold the shelf at the
proper height as you tighten the screws. If you are assembling the cart by
yourself, tighten each screw in turn just enough to hold, and then adjust the
heights one by one until the shelf is positioned properly.
4. Use the 3/16 inch Allen wrench to tighten the cap head screws. Tighten them
first snugly, then go back and tighten them firmly.
K420 Bench Cart Instructions
Figure 8: Installing the Drawer
5. Slide the drawer in underneath the drawer shelf as shown in Figure 8.
Position the drawer so that the curved edge is to the front of the cart. Slide
the drawer into the shelf until it stops.
6. Use your thumb to press into place the two press--stud retainers at the bottom
of the drawer rails, as shown in Figure 9.
13
Drawer Shelf and Drawer
Figure 9: Installing the Press- Stud Retainers
Insert Press-Stud Retainer Into
Hole on Bottom of Drawer
Shelf (one each side)
14
K420 Bench Cart Instructions
Tilt Shelf
Install a tilt shelf with handle in the cart. This shelf should be installed at the
height of the tops of the leg assemblies. You will use these parts:
H1 Tilt Shelf with Handle
H2 Long Rails
H2 1/4 20 Set Screws
H2WeldNuts
H2 1/4 20 Shoulder Bolts, 1/2 inch length
H6 1/8 inch thick Kevlar (plastic) Washers
H2 3/4 inch Steel Washers
H2 Oval Knobs
You will use the 5/32 inch and 1/8 inch Allen wrenches and the circular bubble
level included with your cart.
1. Prepare each of the two long rails by installing a set screw in one of the
threaded holes, as shown in Figure 10. Insert the set screw, positioned with
the hexagonal wrench hole out, into the side of the long rail with the bevels.
Do not screw the set screw all the way in to the long rail; only thread it far
enough to get it started.
Figure 10: Preparing the Long Rails
K420 Bench Cart Instructions
15
Tilt Shelf
2. Slide one long rail down the front channel each leg assembly with the set
screw at the bottom. Position the long rail so that its top edge is about two
inches below the final tilt shelf height. Figure 11 shows the alignment marks
that you will find on the leg assemblies. Align the tops of the long rails with
these marks. Tighten the set screws using the 1/8 inch Allen wrench.
Alignment Mark
(2 inches below
top of shelf)
Front
Figure 11: Long Rail Alignment Marks on the Leg Assemblies
3. Prepare the tilt shelf with handle as shown in Figure 12, by installing a
shoulder bolt, a steel washer, a Kevlar washer, and a weld nut in each of the
two back holes of the tilt shelf. The front holes are curved slots; use the back
holes opposite them. Place the washer on the outside of the shelf, between
the shelf and the leg assembly. Leave each screw assembly loose; do not
screw the weld nut onto the shoulder bolt more than one full turn.
16
K420 Bench Cart Instructions
Weld Nut
3/4 inch Steel Washer
1/8 inch thick Kevlar Washer
1/4-
20 ShoulderBolt
Tilt Shelf
Figure 12: Preparing the Tilt Shelf with Handle
4. Position the tilt shelf with handle horizontally between the leg assemblies, as
shown in Figure 13. Make sure the curved slots under the shelf are toward
the front of the cart.
Front
K420 Bench Cart Instructions
Figure 13: Aligning the Tilt Shelf with Handle
17
Tilt Shelf
5. Slide the tilt shelf with handle down to its position at the height of the top of
the leg assemblies. Slide the tilt shelf slowly between the leg assemblies to
avoid scratching the paint.
If you are assembling the cart by yourself, you will find it helpful to tighten
the shoulder bolts on the back of the tilt shelf finger tight. This will hold the
shelf in place as you assemble the front adjustment knobs.
If you have another person helping you, that person can hold the shelf at the
proper height as you perform the following steps.
6. Place a Kevlar washer on the stud of each oval knob. On each side of the tilt
shelf, hold an additional Kevlar washer between the shelf and the leg
assembly and pass the stud of the oval knob through the shelf slot, the
additional washer, and into the top hole of the long rail. Figure 14 shows this
in detail.
1/8 inch thick
Kevlar Washer
Oval Knob
1/8 inch thick Kevlar
Washer inserted between
Leg Assembly and Shelf
Figure 14: Installation of Tilt Shelf Knobs
7. With the adjustment knobs slightly loose, adjust the tilt of the tilt shelf down
as far as possible. The top of each adjustment slot should touch the knob
shaft. Tighten the adjustment knobs hand tight.
18
K420 Bench Cart Instructions
Tilt Shelf
8. If you previously tightened the shoulder bolts at the back of the tilt shelf,
loosen them now so that you can adjust the level of the tilt shelf in step 9.
9. Use the circular bubble level to adjust the tilt shelf to be level. When it is
level, use the 5/32 inch Allen wrench to tighten the shoulder bolts at the
back of the tilt shelf.
K420 Bench Cart Instructions
19
Leg Caps
Install the two leg caps in the tops of the leg assemblies. You do not need any
tools to install the leg caps.
Press a leg cap into the top of each leg assembly as shown in Figure 15. You may
need to press them into place with the heel of your hand.
20
Figure 15: Installing the Leg Caps
K420 Bench Cart Instructions
Nylon Straps
The last assembly step to finish your cart is to install the two Nylon straps with
buckles. You do not need any tools for this step.
Many of the shelves of your cart have slots for installing Nylon straps. Full--size
shelves have slots for two straps each, and half shelves have slots for one strap
each. Y ou should install your straps in the shelves you will be using to hold
instruments. Always use straps to hold equipment on tilting shelves.
Install the Nylon straps as shown in Figure 16. Note the routing of the strap
through the buckle. This routing allows you to tighten the strap around an
instrument by pulling on the free end of the strap. To loosen a strap, pull up on
the tab of the buckle.
K420 Bench Cart Instructions
Figure 16: Installing the Nylon Straps with Buckles
21
Customization
You can customize your cart in several ways:
HYou can adjust the heights of any of the shelves. First remove all equipment
from the cart. Loosen the four screws associated with the shelf (or for tilting
shelves, the shoulder bolts, oval knobs, and set screws), adjust the height,
level, and retighten.
HYou can move the Nylon straps to any shelf where they are needed.
HYou can apply the press--on probe holder anywhere on the cart that is
convenient. Once applied, it cannot be moved. Make sure the place you are
applying it is clean and dry. Peel the backing from the sticky tape and press
holder into place.
HTilting shelves can be tilted by loosening the two oval knobs, tilting the shelf
to the desired position, and retightening the oval knobs.
HTilting shelves have a retaining bar on the shelf surface; placing instrument
feet in front of this bar helps prevent the instrument from sliding down the
tilted surface. You can move this bar to one of two different positions to
accommodate the instruments you are using.
HYou can rearrange the configuration of the shelves by disassembling the cart
and reassembling it in a different order . Remember to build the cart from the
bottom, shelf by shelf.
WARNING. Changes in shelf location and loading can affect the balance of the
cart. If you arrange the shelves differently from the configuration described in
this manual, test the cart carefully for stability before using it.
22
K420 Bench Cart Instructions
Replaceable Parts
Contact your Tektronix representative to order replacement parts. Within the
United States and Canada, you can call 1-800-TEK-WIDE (1-800-835-9433).
You can order the following parts to repair the K420 Bench Cart:
HLocking Caster, Tektronix part number 401-0691-00.
HNon--Locking Caster, Tektronix part number 401-0690-00.
HNylon Strap with Buckle, Tektronix part number 346-0261-00.
HReplacement bar handle with foam cover and set screws, Tektronix part
HPackage of assorted small hardware and leg caps, Tektronix part number
Table 2: Parts Included with Tektronix Part Number 016-1259-00
QuantityPart Description
2Leg Caps
number 367-0452-00.
016-1259-00. Table 2 lists the parts included in this package.
21/2 inch Split Lockwashers
4Weld Nuts
2Long Rails
81/4 inch Tooth Lockwashers
81/4 20 Cap Head Screws, 1/2 inch length
61/8 inch thick Kevlar (plastic) Washers
2Oval Knobs
21/4inch20SetScrews
23/4 inch Steel Washers
21/4 20 Shoulder Bolts, 1/2 inch length
2Press--Stud Retainers
If you intend to mount a TDS/TLA5000 series instrument to cart models K420
or LACART, you will need a mounting bracket kit, Tektronix part number
407-4996-00.
The mounting bracket kit is included when you order TDS5XXX Option 1K
(adds K420 cart and bracket kit). For TLA5000 series instruments you must
order the mounting bracket kit separately (Tektronix part number 407-4996-00).
K420 Bench Cart Instructions
23
Specifications
The K420 Bench Cart meets the specifications in Table 3. Table 4 shows
additional characteristics.