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TIE DOWN LP850 Owner's Manual

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Model LP850
Actuator
Owners Manual

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Summary of Contents for TIE DOWN LP850

  • Page 1 Model LP850 Actuator Owners Manual...

  • Page 2: Table Of Contents

    Vehicle Wiring - Free Backing Brake Solenoid Actuator Maintance Warnings Bleeding Instructions 7-11 Parts Diagram 12-13 Limited Warranty 14-15 TIE DOWN ENGINEERING 255 Villanova Drive SW, Atlanta, GA 30336 (404) 344-0000 • Fax (404) 349-0401 © 2013 TIE DOWN ENGINEERING, ALL RIGHTS RESERVED Page 2...

  • Page 3: Actuator Installation Instructions

    IMPORTANT: READ AND UNDERSTAND THE ENTIRE INSTRUCTION/ ASSEMBLY PROCEDURE BEFORE INSTALLING YOUR BRAKES AND ACTUATOR. The Model LP850 works by the “surge” or “push” of the trailer toward the tow vehicle. This automatically synchronizes the trailer brakes with the tow vehicle axle brakes.
  • Page 4 1. The vehicle, towing hitch and ball must have a rating equal to or greater than trailer G.V.W.R. 2. Model LP850 will accept 2” trailer hitch balls rated for 8,500# or more only. Trailer balls larger than 2.00” or out of round will not fit the coupler or may result in coupler failure.

  • Page 5: Vehicle Wiring - Free Backing Brake Solenoid

    7. Any control devices that restrict operation of the actuator cannot be used. This includes certain sway control devices. The actuator must be free to telescope in response to braking requirements. 8. Equalizing or weight distributing hitches may be used, allow six to eight inches free chain length.

  • Page 6: Warnings

    In the event that the breakaway system is used, check all system components (cable, S-hooks, etc.) for proper working order. Replace any damaged parts with genuine Tie Down parts only. WARNING When re-setting the break a way system keep hands and fingers clear as you re-set the mechanism, hydraulic pressure held in the system may cause the assembly to snap back suddenly.

  • Page 7: Warnings

    WARNING A loose fit between the coupler and hitch ball can cause the actuator and hitch ball to separate, causing serious damage, injury or death. Check coupler every time prior to towing and at each stop on long trips. Always make certain that coupler latch safety pin is securely installed into coupler latch.

  • Page 8: Bleeding Instructions

    Bleeding Instructions for Model LP850 Bleeding Tools Required: 5/8” Socket Wrench 5/8” Wrench 7/16” Wrench 3/8” Wrench Adjustable Pliers (standard and large size) Hammer Block of wood To bleed master cylinder and brakes, install bleeder hose on first wheel cylinder to be bled; if tandem axle trailer, bleed closest axle first, and the closest brake on that axle first.
  • Page 9 Typical Brake Line Placement Brake Line Connector Actuator Connector End Bleeder Connector Front - Trailer Rear - Coupler Bleeding access hole is located on the drivers side in the middle of the Actuator To pump master cylinder, insert a flat tip screwdriver into the round hole on “LEFT”...
  • Page 10 Emergency Stop Release Press the E-stop upward, (to release) at the same time move the screwdriver forward and back to pump the master cylinder. While holding the E-Stop, pump the master cylinder 4 to 5 times. On the 5th pump hold that position and check for bubbles in the brake lines. While pressing the E-stop release, pump the master cylinder with your right hand 4 to 5 times.
  • Page 11 The bleeding operation for that brake is complete when bubbling stops. Be sure to tighten bleeder screw securely. Each wheel cylinder must be bleed until all air is out of the lines. Replenish the brake fluid during the bleeding process so the level does not fall below half full level in the master cylinder reservoir.
  • Page 12 Model LP850 Replacement Parts 8,500 lbs. Capacity Part #70431B Disc Brake Bolt On Part #70431W Disc Brake Weld On Part #70431SK Disc Brake Swing Tongue US Patents: 6,375,211 and 8,342,559 Page 12...
  • Page 13 1A & 4 Item # Part # Description 70436K Disc Brake Master Cylinder Kit, Includes: master cylinder, filling cap, top and bottom slide plates, pins with retaining rings 11286 Disc Brake Solenoid - used with Disc Brake Actuators 50314 Safety Cable with stainless steel pin 50313 Emergency Stop Cable (E-stop/Breakaway) 48986A...

  • Page 14: Limited Warranty

    TIE DOWN will not pay for expenses incurred in returning a product to TIE DOWN without TIE DOWN’s prior written authority. TIE DOWN shall not be liable for any other expenses purchaser incurs to remedy any defect. Purchasers waive subrogation on all claims under any insurance.

  • Page 15: Limited Warranty

    Field Service: If field service at the request of the purchaser is rendered and the difficulty is found not to be with TIE DOWN’s product, the purchaser shall pay the time and expense (at the prevailing rate at the time of service) of seller’s field representative(s). Charges for service, labor and other expenses that have been incurred by the purchaser, its customer or agent without prior written authorization of TIE DOWN will not be accepted.

  • Page 16: Tie Down Engineering

    Model LP850 Actuator Owners Manual TIE DOWN ENGINEERING Atlanta, Georgia 30336 800-241-1806 • 404-344-0000 ISO 9001:2008 Certification Trade, brand, names and drawings are the intellectual property of TIE DOWN ENGINEERING. ©2015 TIE DOWN, Inc. Manual #08215 (Rev. 12-8-2016, C1345)