CEN-TECH 93028 Assembly And Operating Instructions Manual

Brand: CEN-TECH

Model: 93028

Type: Assembly And Operating Instructions Manual

The CEN-TECH 93028 Digital Disc Brake Caliper is a versatile tool for automotive enthusiasts and professionals alike. With a digital readout range of 0" to 5.7" and graduations of .0005", it provides precise measurements for various automotive tasks. The caliper's jaw reach of 3-5/8" and scale length of 6" make it suitable for measuring disc brake pads, rotors, and ball joint play. It features a zero function for easy referencing and inch/mm conversion for added convenience. The caliper is battery-powered and comes with a protective case for storage.

DIGITAL DISC BRAKE

CALIPER

ASSEMBLY AND OPERATING INSTRUCTIONS

3491 Mission Oaks Blvd., Camarillo, CA 93011

Visit our Web site at http://www.harborfreight.com

2005 by Harbor Freight Tools

manual or any artwork contained herein may be reproduced in any shape or

form without the express written consent of Harbor Freight Tools.

For technical questions and replacement parts, please call 1-800-444-3353

93028

Page 2SKU 93028 For technical questions, please call 1-800-444-3353.

Specifications

Save This Manual

You will need the manual for the safety warnings and precautions, assembly instructions,

operating and maintenance procedures, parts list and diagram. Keep your invoice with this

manual. Write the invoice number on the inside of the front cover. Keep the manual and

invoice in a safe and dry place for future reference.

Safety Warnings and Precautions

WARNING: When using tool, basic safety precautions should always be followed to

reduce the risk of personal injury and damage to equipment.

Read all instructions before using this tool!

1. Keep work area clean. Cluttered areas invite injuries.

2. Observe work area conditions. Do not use tools in damp or wet locations. Don’t

expose to rain. Keep work area well lit.

3. Keep children away. Children must never be allowed in the work area. Do not let

them handle the Caliper.

4. Store idle equipment. When not in use, tools must be stored in a dry location to

inhibit rust. Always lock up tools and keep out of reach of children.

5. Use the right tool for the job. Do not attempt to force a small tool or attachment to

do the work of a larger industrial tool. There are certain applications for which this tool

was designed. It will do the job better and more safely at the rate for which it was

intended. Do not modify this tool and do not use this tool for a purpose for which it

was not intended.

6. Dress properly. Do not wear loose clothing or jewelry as they can be caught in

moving parts. Protective, electrically nonconductive clothes and nonskid footwear are

recommended when working. Wear restrictive hair covering to contain long hair.

7. Use eye protection. Always wear ANSI approved impact safety goggles.

8. Do not overreach. Keep proper footing and balance at all times.

Digital Readout Range 0” to 5.7” (0 to 144.8 mm)

Graduations .0005”

Jaw Reach 3-5/8”

Scale Length 6”

Accuracy .001”

Overall Dimensions 9-1/2” L x 4-7/8” W x 1/2” T

Maximum Temperature 105

Battery 1.5 Volt (SS44)

Page 3SKU 93028 For technical questions, please call 1-800-444-3353.

9. Maintain tools with care. Keep tools clean for better and safer performance. .

10. Stay alert. Watch what you are doing, use common sense. Do not operate any tool

when you are tired.

11. Check for damaged parts. Before using any tool, any part that appears damaged

should be carefully checked to determine that it will operate properly and perform its

intended function. Check for alignment and binding of moving parts; any broken parts

or mounting fixtures; and any other condition that may affect proper operation. Any

part that is damaged should be properly repaired or replaced by a qualified

technician. Do not use the tool if any switch does not turn On and Off properly.

12. Replacement parts and accessories. When servicing, use only identical

replacement parts. Use of any other parts will void the warranty. Only use accessories

intended for use with this tool. Approved accessories are available from Harbor

Freight Tools.

13. Do not operate tool if under the influence of alcohol or drugs. Read warning

labels if taking prescription medicine to determine if your judgment or reflexes are

impaired while taking drugs. If there is any doubt, do not operate the tool.

14. Maintenance. For your safety, service and maintenance should be performed

regularly by a qualified technician.

Warning: The warnings, cautions, and instructions discussed in this instruction manual

cannot cover all possible conditions and situations that may occur. It must be under-

stood by the operator that common sense and caution are factors which cannot be

built into this product, but must be supplied by the operator.

WARNING: The brass components of this product contain lead, a chemical known to the

State of California to cause birth defects (or other reproductive harm).

(California Health & Safety code 25249.5, et seq.)

Unpacking

When unpacking, check to make sure that the product is intact and undamaged. If any

parts are missing or broken, please call Harbor Freight Tools at the number on the cover of

this manual as soon as possible.

Page 4SKU 93028 For technical questions, please call 1-800-444-3353.

Operation

Measuring Disc (Drum Shoe) Pad Thickness

1. Place the Caliper tips on both sides of the “pad backing

plate”, holding the flat side flush with the surface. Do

not apply pressure to the Caliper jaws. Press ZERO.

2. Next, position the Caliper tips around both the backing

plate and pad with the flat tip flush on the backing plate,

and the point in any scoring on the pad. Check the dis-

play, and the reading shown will be the thickness of the

pad. Note:

On the drum shoe, the flat tip must be held

flat across the pad.

Set-Up

1. Install the battery as per the instructions on page 6.

2. Press the On/Off button. Press the in/mm button to toggle between the desired unit

reading measurement. Wipe the tips of the Caliper clean and then close the Caliper

until the tips gently touch, and press the Zero button. The display will read, “0.000 or

0.00mm”. Do not force the Caliper closed when getting a reading, or the reading will be

wrong.

Inch Units

Indicator

FIGURE 1

REV 04/05

Note: Before using for any application, follow the zeroing directions in “Set -Up” above.

Page 5SKU 93028 For technical questions, please call 1-800-444-3353.

Operation (continued)

Measuring Ball Joint Play

1. You will be measuring from the top to the bottom of the Ball Joint when the Ball is

moved from the top position to the bottom position.

2. The vehicle must be safely suspended so that the front suspension arms are hanging

loose. Place the Caliper tips at convenient locations both at the top and bottom of the

Ball Joint. Press ZERO.

3. Lift the spindle (wheel) while closing the Caliper on the Ball Joint as the Ball moves

from the top to the bottom position. Once all the play has been removed, check the

digital readout to see the Ball Joint Play. Check with your service manual for allowable

play.

Measuring Disc Rotor Thickness

1. Place the Caliper tips on both sides of the rotor and

lightly close it so that the flat side is flush on the rotor

surface (this side of the rotor must be flat to get an accu-

rate reading). Make sure the pointed tip is in any scor-

ing on the rotor.

2. The display will show the Disc Rotor Thickness. Your

service manual (not included) will state the minimum

allowed rotor thickness.

Page 6SKU 93028 For technical questions, please call 1-800-444-3353.

Maintenance

1. Wipe the Caliper clean with a lint free cloth.

2. Always keep the Caliper in the protective case in the OFF position when not in use.

3. When the battery becomes low, the numeric display will begin to flash. Follow the

directions below to change the battery. Only use a 1.5 Volt (SS44) battery.

Remove the cover. Remove and replace the Battery making sure that you replace the

Battery identically to how the original battery was positioned. Replace the cover.

Note: Other than the battery mentioned above, there are no replacement parts for this unit.

FIGURE 2

Cover

Battery

REV 04/05

CEN-TECH 93028 Assembly And Operating Instructions Manual

CEN-TECH 93028 Assembly And Operating Instructions Manual

CEN-TECH 93028 Assembly And Operating Instructions Manual

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