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3-25-99
BH20002 Rev.4
Dethmers Manufacturing Company Dethmers Manufacturing Company Dethmers Manufacturing Company Dethmers Manufacturing Company Dethmers Manufacturing Company
DOING OUR BEST TO PROVIDE YOU THE BEST
DA10
ACTUATOR
OPERATOR’S MANUAL
ASSEMBLY READ complete manual CAREFULLY
CALIBRATION
BEFORE attempting operation.
OPERATION
REPLACEMENT PARTS
DEMCO • Dethmers Mfg. Co. • 4010 320th St. • P.O. Box 189 • Boyden, IA 51234
PH: (712) 725-2311 or (712) 725-2302 • Toll Free: 1-800-543-3626 •
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NOTES Page 2
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DEMCO MODEL DA10 ACTUATOR Model DA10 is a heavy duty 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. WARNING: To Prevent Serious Injury or De
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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: WARNING, and CAUTION with safety messages. Indicates a potentially hazardous situation that, if Appropriate signal word for each ha
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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 sho
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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 positioned as shown BRAKES ON BRAKES OFF DO NOT TOW TOWABLE 11/98 BH21003 Part # BH21003 Page 6
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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. • Al
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BEFORE OPERATION: • 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 equ
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• 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
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FOLLOWING OPERATION • Following operation, or when unhitching, stop towing vehicle, set brakes, shut off the engine and remove ignition key. • Store unit in an area away from human activity. • Do not permit children to play on or around stored unit. • Make sure all parked units are on a hard, level surface and engage all safety devices. • Wheel chocks may be needed to prevent unit from rolling. HIGHWAY AND TRANSPORT OPERATIONS • Adopt safe driving practices: - Always drive at a safe speed rela
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• Watch for obstructions overhead and side to side while transporting. • Always operate equipment in a position to provide maximum visibility at all times. Make allowances for increased length and weight of equipment when making turns and/or stopping. PERFORMING MAINTENANCE • Good Maintenance is your responsibility. Poor maintenance is an invitation to trouble. • Make sure there is plenty of ventilation. Never operate engine of towing vehicle in a closed building. Exhaust fumes may cause asphyxi
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BOLT TORQUE TORQUE DATA FOR STANDARD NUTS, BOLTS, AND CAPSCREWS. Tighten all bolts to torques specified in chart unless otherwise noted. Check tightness of bolts periodically, using bolt chart as guide. Replace hardware with same grade bolt. NOTE: Unless otherwise specified, high-strength Grade 5 hex bolts are used throughout assembly of equipment. Bolt Torque for Standard bolts * Torque Specifications GRADE 2 GRADE 5 GRADE 8 “A” lb-ft (N.m) lb-ft (N.m) lb-ft (N.m) 1/4” 6 (8) 9 (12) 12 (16) 5/1
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MODEL DA10 ACTUATOR PARTS BREAKDOWN 13 12 19 11 23 24 21 20 18 22 14 5398 Master Cylinder Repair Kit 14 10 (gasket 05681 included) 16 24 15 15 9 17 8 7 Standard Outer 9 4 Case Shown, 8 See Page 14 for 4 Other Options 4 9 2 5 6 9 5 Model DA10 ACTUATOR PARTS LIST REF. NO. PART NO. QTY. DESCRIPTION *1. 05972 1 Inner Slider Tb. Chan. Down (Shown) 1 *- 05335 - Inner Slider Tube Channel Center *- 09670 - Inner Slider Tube Channel Up 3 2. 05987 1 Top Wear Pad 3. 05988 1 Bottom Wear Pad 4. 02206 12 1/4
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OUTER CASE OPTIONS 03875 05332 05334 05971 07113 07414 09418 09443 09536 Page 14
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DEMCO MODEL DA10 BRAKE ACTUATOR WARNING To Prevent Serious Injury Or Death: • Review all of the 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 which could cause severe property damage, personal injury or death. To avoid personal injury or deat
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5. Once bleeding is completed, refill master cylinder and attach cap (#21) securely. Replace emergency lever spring, lever guide, lock washers and 5/16" hex head bolts. 6. Test brakes by pulling emergency lever (#16) forward until it locks into its second notch position. (Lever should be approximately straight up.) Attempt to rotate wheels in a forward direction. If any wheels rotate, brakes must be adjusted. To adjust brakes, release emergency lever from locked position, set each wh
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DEMCO BRAKE PRODUCTS - LIMITED WARRANTY 1. Extent and Duration of this Warranty: Your Demco brake product is warranted to be free from defects in materials and workmanship under normal use and service for a period of one year after date of purchase by original owner when properly installed, used and maintained by purchaser. When this Demco brake product is used as part of complete Demco braking system (actuators, brake lines, and back plates), Demco warrants system to be free from defects in mat
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DEMCO BRAKE PRODUCTS - LIMITED WARRANTY CONTINUED This warranty does not cover: 1) normal wear and tear. 2) road film or gravel damage to paint. 3) paint. 4) rust damage. 5) any Demco brake product that has been loaded in excess of load capacity stated on identification label. 6) Accessory parts, materials or components. Warrantor has a policy of continuous product improvement. We reserve the right to change or improve design of any Demco brake product, including but not limited to state of the
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DETHMERS MFG. COMPANY P.O. BOX 189 4010 320th St., BOYDEN, IA. 51234 PH: (712) 725-2311 or (712) 725-2302 FAX: (712) 725-2380 TOLL FREE: 1-800-54DEMCO (1-800-543-3626) www.demco-products.com Page 20
