Demco DA66B Manual de usuario
Page 1
OPERATORS MANUAL
BRAKE ACTUATOR
DA66B
DOING OUR BEST TO PROVIDE YOU THE BEST
ASSEMBLY
CALIBRATION
OPERATION
REPLACEMENT PARTS
READ complete manual CAREFULLY
BEFORE attempting operation.
11-05
BH20030, Rev 0
DEMCO •Dethmers Mfg. Co. •4010 320th St. •P.O. Box 189 •Boyden, IA 51234
PH: (712) 725-2311 •Toll Free: 1-800-543-3626 •FAX: 1-800-845-6420
www.demco-products.com
Page 2
Model DA66B is a hydraulic surge brake actuator for trailers with two or four wheels.
When brakes are applied on the towing vehicle, forward inertia of trailer toward towing
vehicle applies brakes on trailer in direct relation to manner brakes are applied on
towing vehicle. Brake towing vehicle hard and brakes on trailer are applied hard.
Master cylinder push rod spring assembly protects system from hydraulic pressure
overload.
DEMCO MODEL DA66B ACTUATOR
•Review following instructions before installation and use of hydraulic brake
actuator.
•Dealers or distributors must review these instructions with ultimate user.
•Failure to follow these instructions, or failure to properly maintain braking
system after installation, can result in loss of braking action.
WARNING: To Prevent Serious Injury or Death
Table of Contents
General information ............................................................................................................ 2
Warranty Registration ....................................................................................................... 3-4
Safety, Signal Words .......................................................................................................... 5
Equipment Safety Guidelines ............................................................................................. 6
Safety Sign Locations ......................................................................................................... 7
Safety Sign Care ................................................................................................................8
Remember ......................................................................................................................... 8
Before Operation ................................................................................................................9
During Operation ............................................................................................................. 9-10
Following Operation........................................................................................................... 11
Highway and Transport Operations................................................................................. 11-12
Performing Maintenance ................................................................................................... 12
Bolt Torque ........................................................................................................................ 13
DA66B Brake Actuator Parts Breakdown and Parts List................................................. 14-15
Actuator Installation and Maintenance............................................................................ 16-17
Demco Brake Products Limited Warranty .......................................................................... 18
Demco Brake Products Limited Warranty Cont. ................................................................ 19
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How satisfied are you with our product? ❍❍❍❍
How satisfied are you with the dealership/distributor sales staff? ❍❍❍❍
Dealer/Distributor Name City State
How satisfied are you with the company sales staff? ❍❍❍❍
How satisfied are you with the delivery? ❍❍❍❍
Did you have any contact with a Demco Representative? YES NO
If YES, how satisfied were you? ❍❍❍❍
I would recommend this product to my family and friends. YES NO
Would you purchase again from DEMCO? YES NO
Since taking delivery, have you been contacted by the dealer? YES NO
Did you have any problems with this DEMCO product? YES NO
If YES, are you satisfied with the company’s resolution of your problem? ❍❍❍❍
Why did you purchase this product?
Please list the specific source of information prompting this purchase.
After purchasing this product, do you see any needed product improvement? If yes, what improvement?
What other products would you like to see DEMCO offer?
Comments
Owner’s Name: Mailing Address:
City: State: Zip Code:
Model#:
Serial #:
Purchase Date:
Owner’s Signature:
Please return to DETHMERS MFG. CO. By FAX or tri-folding this form to the backside, it is pre-addressed.
Ag ❍
RV ❍
Rental ❍
Brakes ❍
Marine ❍
Warranty Registration
Dethmers Manufacturing Company
4010 320th Street • Box 189 • Boyden, Iowa 51234
Toll Free 800-54DEMCO (800-543-3626) • FAX 800-845-6420
www.demco-products.com Very
Satisfied Satisfied
Very
Dissatisfied
Dissatisfied
Page 4
Postage
Dethmers Manufacturing Company
4010 320th Street, Box 189
Boyden, Iowa 51234
Page 5
SAFETY
TAKE NOTE! THIS SAFETY ALERT SYMBOL FOUND THROUGHOUT THIS
MANUAL IS USED TO CALL YOUR ATTENTION TO INSTRUCTIONS INVOLVING
YOUR PERSONAL SAFETY AND SAFETY OF OTHERS. FAILURE TO FOLLOW
THESE INSTRUCTIONS CAN RESULT IN INJURY OR DEATH.
THIS SYMBOL MEANS
ATTENTION
BECOME ALERT
YOUR SAFETY IS INVOLVED!
SIGNAL WORDS
Note use following signal words DANGER,
WARNING, and CAUTION with safety messages.
Appropriate signal word for each has been selected
using following guidelines:
DANGER:
Indicates an imminently hazardous situation that,
if not avoided, will result in death or serious injury.
This signal word is to be limited to most extreme
situations typically for machine components which,
for functional purposes, cannot be guarded.
WARNING:
Indicates a potentially hazardous situation that, if
not avoided, could result in death or serious injury,
and includes hazards that are exposed when
guards are removed. It may also be used to alert
against unsafe practices.
CAUTION:
Indicates a potentially hazardous situation that, if
not avoided, may result in minor or moderate injury.
It may also be used to alert against unsafe
practices.
If you have questions not answered in this manual, require additional copies, or if your manual is damaged,
please contact your dealer or Dethmers Mfg. Co., P.O. Box 189, 4010 320th Street, Boyden, IA 51234
ph: (712) 725-2311 or (712) 725-2302 Toll Free: 1-800-543-3626 Fax: (712) 725-2380
http://www.demco-products.com
Page 6
SAFETY...YOU CAN LIVE WITH IT
EQUIPMENT SAFETY GUIDELINES
Every year many accidents occur which could have been avoided by a few seconds of
thought and a more careful approach to handling equipment. You the operator, can avoid
many accidents by observing and following precautions in this section. To avoid personal
injury, study the following precautions and insist those working with you, or you yourself,
follow them.
In order to provide a better view, certain illustrations in this manual may show an assembly
with a safety shield removed.However, equipment should never be operated in this condition.
Keep all shields in place. If shield removal becomes necessary for repairs, replace shield
prior to use.
Replace any caution, warning, danger or instruction safety decal that is not readable or is
missing. Location of such decals is indicated in this booklet.
Do not attempt to operate this equipment under the influence of alcohol or drugs.
Review safety instructions with all users.
Operator should be a responsible adult. DO NOT ALLOW PERSONS TO OPERATE OR
ASSEMBLETHIS UNIT UNTILTHEY HAVE DEVELOPED ATHOROUGH UNDERSTANDING OF
SAFETY PRECAUTIONS AND HOW IT WORKS.
Do not paint over, remove, or deface any safety signs or warning decals on your equipment.
Observe all safety signs and practice instructions on them.
Never exceed limits of a piece of machinery. If its ability to do a job, or to do so safely is in
question-DON'TTRY IT.
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SAFETY SIGN LOCATIONS
Types of safety sign and locations on equipment are shown in illustration below. Good safety
requires that you familiarize yourself with various safety signs, type of warning, and area or
particular function related to that area, that requires your SAFETY AWARENESS.
This decal is located in the
position shown on both
sides of the actuator. The
replacement part number
for two decals is BH21004.
Preset
Fasteners
DO NOT adjust
without
factory
specifications.
DRUM BRAKES
DISC BRAKES
ATTENTION
This brake actuator is
specially designed for
use with disc brakes
ONLY.
Any replacement of
this unit MUST be of
thesame design.
REV 1 BD21001
This decal is located in the
position shown on both
sides of the actuator. The
replacement part number
for one decal is BD21001.
Page 8
SAFETY SIGN CARE
•Keep safety signs clean and legible at all times.
•Replace safety signs that are missing or have become illegible.
•Replacement parts that displayed a safety sign should also display safety sign.
•Safety signs are available from your distributor, dealer parts department, or factory.
How to install safety signs:
•Be sure that installation area is clean and dry.
•Decide on exact position before you remove backing paper.
•Remove smallest portion of split backing paper.
•Align decal over specified area and carefully press small portion with exposed sticky
backing in place.
•Slowly peel back remaining paper and carefully smooth remaining portion of decal into
place.
•Small air pockets can be pierced with a pin and smoothed out using piece of decal
backing paper.
REMEMBER
Your best assurance against accidents is a careful and responsible operator. If there is any
portion of this manual or function you do not understand, contact your local authorized dealer
or manufacturer.
Page 9
BEFORE OPERATION:
•Carefully review and follow the installation instructions on page 16 of this manual.
•Carefully study and understand this manual.
•Always wear protective clothing and substantial shoes.
•Give equipment a visual inspection for any loose bolts, worn parts, or cracked welds, and
make necessary repairs. Follow maintenance safety instructions included in this manual.
•Be sure there are no tools lying on or in equipment.
•Do not use equipment until you are sure that area is clear, especially around children and
animals.
•Don't hurry learning process or take equipment for granted. Ease into it and become familiar
with your new equipment.
•Practice operation of your equipment and its attachments. Completely familiarize yourself
and other operators with its operation before using.
•Make sure that brakes are evenly adjusted.
•Make sure tow rating on vehicle is high enough for what it is towing. Refer to your towing
vehicle Owners Manual.
•Do not allow anyone to stand between tongue or hitch and towing vehicle when
backing up to equipment.
•Securely attach to towing vehicle. Use appropriately sized hitch ball and/or hitch pin with a
mechanical retainer and attach safety chains.
•Criss cross chains under tongue and secure to draw bar cage, mounting loops,
or bumper frame.
DURING OPERATION
•SAFETY CHAINS If equipment is going to be transported on a public highway, safety
chains should be obtained and installed. Always follow state and local regulations
regarding safety chains and auxiliary lighting when towing equipment on a public highway.
Be sure to check with local law enforcement agencies for your own particular regulations.
Only safety chains (not an elastic or nylon/plastic tow straps) should be used to retain
connection between towing and towed equipment in event of separation of primary
attaching system.
•Install safety chains by criss crossing chains under tongue and secure to draw bar cage,
mounting loops, or bumper frame.
Page 10
•Beware of bystanders, PARTICULARLY CHILDREN! Always look around to make sure it is
safe to start engine of towing vehicle or move equipment. This is particularly important with higher
noise levels, as you may not hear people shouting.
•NO PASSENGERS ALLOWED- Do not carry passengers anywhere on or in equipment.
•Do not clean, lubricate, or adjust your equipment while it is moving.
•When halting operation, even periodically, set towing vehicles parking brake, shut off engine,
and remove the ignition key.
•Be extra careful when using on inclines.
•OPERATE TOWING UNIT CAUTIOUSLY. REDUCE SPEED TO ALLOW FOR ADDITIONAL
WEIGHT OF TOWED UNIT.
•Avoid loose gravel, rocks, and holes, they can be dangerous for equipment operation or movement.
•Allow for overall length when making turns.
•Keep all bystanders and pets clear of work area.
•Operate towing vehicle from operators seat only.
•Never leave running equipment attachments unattended.
•As a precaution, always recheck hardware on equipment following every 100 hours or 50 miles.
Correct all problems. Follow maintenance safety procedures.
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