Model 80 Actuator* for Trailer Brakes
Contents
1. WARNING AVOID sharp turns which can cause the actuator to bind or jackknife against the tow vehicle or cause a bend in the tongue Either can damage the actuator causing brake failure AVOID towing trailer across large bumps or dips that may over stress the connec tion between the trailer and tow vehicle as this could result in damage to the actuator WARNING DO NOT REUSE BRAKE FLUID Always use fresh DOT 3 brake fluid from a fresh container Failure to maintain proper levels of fluid in the reservoir will cause brake failure WARNING Failure to install the hitch pin before towing can result in accidental opening of the coupler hitch latch which can lead to the trailer coming off of the hitch ball causing serious damage injury or death If pin will not fit into the front lower hole the coupler is not attached properly Re set coupler on hitch ball WARNING A minimum of 5 tongue weight and a maximum 10 tongue weight of the trailer GVWR must be positioned over the hitch ball The Trailer tongue should be parallel to the ground Too much weight can cause premature brake actuation and loss of control of the towing vehicle To little tongue weight can cause the trailer to fishtail resulting in loss of control of the tow vehicle and trailer total trailer weight GVWR includes weight of the trailer plus load WARNING A loose fit between the coupler and hitch ball can cause the actuator and hitch ball to separate causing serious damage injur2. I DOWN ENGINEERING 11802 366
3. agent without prior written authorization of TIE DOWN will not be accepted TIE DOWN ENGINEERING 5901 Wheaton Drive Atlanta GA 30336 DOWN www tiedown com 404 344 0000 FAX 404 349 0401 ENGINEERING TIE DOWN EXTENDS NO WARRANTY EXPRESS OR IMPLIED ON PRODUCTS NOT MANUFACTURED BY TIE DOWN OR TO TIE DOWN S DESIGN SPECIFICATION INCLUDING BUT NOT LIMITED TO SUCH ITEMS AS TIRES BRAKES BEARINGS HOSE AND TUBING PURCHASER S RECOURSE SHALL BE LIMITED TO ANY WARRANTY OF THE RESPECTIVE MANUFACTURERS THIS WARRANTY EXCLUDES ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICU LAR PURPOSE OR ANY PURPOSE THIS WARRANTY DOES NOT COVER NOR EXTEND TO INCIDENTAL OR CONSEQUENTIAL DAMAGE Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation or exclu sion may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary from state to state No representative has authority to make any representation promise or agreement except as stated in this Limited Warranty TIE DOWN reserves the right to make design and other changes upon its products without any obligation to install the same on any previously sold or delivered products DUE TO THE WIDE VARIATION IN USES TO WHICH TIE DOWN PRODUCTS WHEELS HUBS BRAKES ETC ARE SUBJECTED BY USERS WE ARE UNABLE TO SPECIFY CARRYING CAPACITIES OR SPEEDS FOR A PARTICU
4. x5 1 Bolt the actuator to the tongue using grade 5 bolts 1 2 inch in diameter 4 inches long Lightweight tongues less than 10 gauge require spacer tubes inside the tongue for reinforcement Attachment strength should equal or exceed 1 1 2 times trailer G V W R 2 Hydraulic brake lines should be installed on the trailer as described in the installation manual supplied with the brakes Note Some disc brakes require the use of flexible brake lines at the connection POINT on the brake caliper Follow brake manufacturer instructions 3 Tie Down s actuators feature a shock dampener that uses brake fluid from the master cylinder The dampener must be primed before bleeding or using trailer To prime the dampener fill the master cylinder with DOT 3 brake Fluid Push the coupler into the housing and slowly pull out 3 times then refill master cylinder 4 Use only DOT 3 brake fluid in the Model 80 actuator Use a pressure type brake bleeder to bleed brakes This type of brake bleeder is available at your local automotive jobber Follow manufacturer s directions Or manually bleed the brakes using a heavy duty flat blade screwdriver inserted in the hole provided on top of the actuator near the front Insert the screwdriver and use a pumping action to activate the master cylinder in order to bleed the brakes See page 8 for more details To bleed master cylinder and brakes install bleeder hose on first wheel cylinder to be bled if tandem axle trai
5. Installation Instructions and Service Manual Model 80 Actuator for Trailer Brakes 8000 Ibs Capacity Part 47206 47207 Drum Brake Ready Part 47208 47209 Disc Brake Ready Includes 80007 rated 2 Ball with 1 shank US Patent No 6 375 211 MODEL 80 ACTUATOR INSTALLATION INSTRUCTIONS IMPORTANT READ AND UNDERSTAND THE ENTIRE INSTRUCTION ASSEMBLY PROCEDURE BEFORE INSTALLING YOUR BRAKES AND ACTUATOR The Model 80 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 When the trailer pushes against the tow vehicle the actuator telescopes together and applies the force to the master cylinder supplying hydraulic pressure to the brakes The built in dampening shock absorber retards the telescoping shock against the hitch ball by depending on the brake fluid in the master cylinder Low levels of brake fluid will signal the tow vehicle operator to add brake fluid via coupler knocking Be sure to comply with regulations for brakes in your state Brake laws sometimes are minimum standards and you may wish to add additional brakes to your trailer to meet minimum Gross Vehicle Weight Ratings GVWR Read your tow vehicle owner s manual on towing capacity and other towing recommendations before installing brakes or this actuator The Model 80 Actuator is completely assembled and ready to bolt into place Tongue sizes 3 x3 3 x4 amp 3
6. LAR APPLICATION THEREFORE THE MANUFACTURER MUST TEST HIS EQUIPMENT UNDER THE MOST SEVERE CONDITIONS TO DETERMINE THAT TIE DOWN PRODUCTS ARE SUITABLE THERE ARE NO WARRANTIES WHICH EXTEND BEYOND THOSE DESCRIBED ABOVE EFFECTIVE JANUARY 2001 THIS WARRANTY SUPERSEDES ALL PRIOR WARRANTIES WRITTEN OR IMPLIED Drill Template lt I 3 MEE V3 Drill Instructions for Bleeding Tie Downs Model 66 70 amp 80 Actuators EEE ESE lc hl Actuator Lh DOWN Bedown com d LLD EFE Georgia Tie Down s actuators feature a shock dampener that uses brake fluid from the master cylinder The dampener must be primed before bleeding or using trailer To prime the dampener fill the master cylinder with DOT 3 brake Fluid Push the coupler into the housing and slowly pull out 3 times then refill master cylinder To pump master cylinder insert a flat tip screwdriver into the round hole near the front of the actuator cover picture 1 Screwdriver tip will fit into the slot provided in the emergency brake bracket as shown Push the screwdriver forward and back to pump the master cylinder picture 2 Normal Operation Emergency Stop Position WARNING If button stop cable is showing DO NOT TOW TRAILER Release emergency stop cable by prying spring out with a flat blade screw driver TIE DOWN ENGINEERING 5901 Wheaton Drive Atlanta GA 30336 wn www tiedown com 404 344 0000 FAX 404 349 0401
7. em Check fluid level again Remember low brake fluid levels will result in hitch ball knocking When testing is completed make sure master cylinder is filled to approximately 3 8 below the top of the reservoir and filler cap is securely in place Road test again to make sure brakes work properly RATED CAPACITY Maximum Actuator Capacity 8000 Ibs Gross Load 800 Ibs Maximum Tongue Load 400 Ibs minimum tongue weight The actual in service rating is limited to that of the ball and hitch being used or the trailer manufacturer s G V W R shown on the certi fication label whichever is lower Note GVWR is the Gross Vehicle Weight Rating which includes the trailer and the load weight as a Total Gross Weight HITCHING TRAILER 1 The vehicle towing hitch and ball must have a rating equal to or greater than trailer GVWR 2 Model 80 will accept 2 trailer hitch balls with a 8000 capacity only furnished with actuator 8000 rated 2 Ball with 1 shank Trailer balls larger than 2 00 or out of round will not fit the coupler or may result in coupler failure Balls smaller than 1 970 can cause shock loading and sudden disconnection Make certain ball latch is in correct position to retain the hitch ball Push latch lever back until safety latch engages plate below lever latch Always insert safety pin into forward hole as a safety lock for the hitch ball coupler prior to towing Do not tow trailer if coupler is damaged 3 Connect safe
8. g system not obtained from or approved in writing by TIE DOWN Misapplication misuse and failure to follow the directions or observe cautions and warnings on installation operation application inspection or maintenance specified in any TIE DOWN quotation acknowledgement sales literature specification sheet or installation instruction and service manual applicable literature e Use of product in any other application other than those described in TIE DOWN s product information materials If any TIE DOWN products are found upon TIE DOWN s examination to have been defective when supplied TIE DOWN will either credit the purchaser s account for the purchase price of the TIE DOWN product replace the TIE DOWN prod uct or repair the product TIE DOWN has sole discretion in choosing which option to provide For this LIMITED WAR RANTY to apply TIE DOWN must receive notice of the alleged defect within 30 days of either the discovery of the alleged defect or the expiration of the warranty period whichever is earlier Any claim not made within this period shall conclusively be deemed waived If requested by TIE DOWN purchaser shall return the alleged defective product to TIE DOWN for examination at pur chasers expense TIE DOWN will not pay for expenses incurred in returning a product to TIE DOWN without TIE DOWNV s prior written authority TIE DOWN shall not be liable for any other expenses purchaser incurs to remedy any defect Purchasers wa
9. ive subrogation on all claims under any insurance Limitation of Liability It is expressly agreed that the liability of TIE DOWN is limited and TIE DOWN does not function as an insurer THE REMEDIES SET FORTH IN THIS WARRANTY SHALL CONSTITUTE THE EXCLUSIVE REMEDIES AVAILABLE TO THE PURCHASER OR USER AND ARE IN LIEU OF ALL OTHER REMEDIES EXPRESS OR IMPLIED THE LIABILITY OF TIE DOWN WHETHER IN CONTRACT IN TORT UNDER ANY WARRANTY OR OTHER WISE SHALL NOT EXCEED THE PURCHASE PRICE OF THE PARTICULAR PRODUCT MANUFACTURED SOLD OR SUPPLIED BY TIE DOWN To Obtain Technical Assistance To enable TIE DOWN to respond to a request for assistance or evaluation of cus tomer or user operating difficulty please provide at a minimum the following information by calling 404 344 0000 e Model number serial number and all other data on the specific component which appears to be involved in the difficulty e The date and from whom you purchased your TIE DOWN product e State your difficulty being sure to mention at least the following Application Nature of load involved and Weight of the load 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 cus tomer or
10. king against the hitch ball while starting or stopping check brake fluid reservoir and fill if below 3 8 full from the top Dampening shock absorber requires sufficient brake fluid in order to retard movement of coulpler against hitch ball during towing WARNING DISC BRAKE USE Actuator models desiged for disc brakes do not have a check valve installed Check valves are required for use with drum brakes DO NOT USE ANY ACTUATOR DESIGNED FOR DRUM BRAKES ON A TRAILER WITH DISC BRAKES INSTALLED WARNING Actuator and brakes should always be flushed with fresh water after using trailer in corrosive conditions This includes salt water fertilizers and other corrosive materials Before storing trailer remove brakes and clean thoroughly It is also wise to repack the bearings at the same time Failure to properly and adequately maintain the actuator could cause serious damage injury or death WARNING The breakaway system is not designed to operate if the trailer does not separate completely from the tow vehicle or if the tongue goes under the rear of the tow vehicle WARNING 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 away 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
11. ler bleed closest axle first and the closest brake on that axle first Use a loose end of hose from the bleeder valve submerged in a glass container of brake fluid to observe bubbling hose must be submerged into clean brake fluid to keep air from traveling back into the brake cylinder Instruction 15388 e TIE DOWN ENGINEERING 5901 Wheaton Drive Atlanta GA 30336 TIE DOWN 1802 178 wwW tiedown com 404 344 0000 FAX 404 349 0401 ENGINEERING Loosen the bleeder screw located in the wheel cylinder one turn the system is now open to the atmosphere The bleeding operation for that brake is complete when bubbling stops Be sure to tighten bleeder screw securely Each wheel cylinder must be bled 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 When bleeding and testing is completed make sure master cylinder is filled to approximately 3 8 below the top of the reservoir and filler cap is securely in place When using drum or disc brakes on tandem axle trailers both axles must be installed with brakes Failure to install brakes on both axles will result in loss of braking performance overheating of brakes amp wheel hub and significantly reduce brake pad life Road test trailer a short distance to activate the actuator several times This will fill the reservoir of the master cylinders shock dampening syst
12. safety lock for the hitch ball coupler latch when towing at all times MAINTENANCE 1 Always check the brake fluid reservoir before using trailer Make sure it is at least half full If not re fill to approx 3 8 inch below the top of the reservoir with DOT 3 brake fluid Check for leaks and repair as required Never reuse brake fluid 2 The model 80 is equiped with two Superlube pins to provide grease to the inner rollers Use a grease gun to lubricate the rollers through the grease fittings provided every 6 months For heavy use grease every 3 months 3 To extend coupler and ball life coat both with a thin coating of grease This will also eliminate squeaking Wipe clean and renew grease film each time trailer is used 4 Examine the actuator for bent parts or wear each time the trailer is used Replace parts as necessary There are no user adjustments on the actuator 6 Actuator travel shown by coupler roller path over one inch indicates a need to adjust the brakes or add fluid to the reservoir or a need to bleed the brakes and check connections for leaks Adjust per instructions found in brake installation manual In general back off the adjusters on drum brakes from locked position as required Adjust Free Backing brakes by rotating wheel in forward direction only Failure to adjust may result in loss of braking Disc brakes do not require adjustment check for pad wear periodically 7 While towing if the actuator appears to be knoc
13. ssembly Brakeaway with button stop 50301 Safety Pin Cable 47242 Actuator Assembly Housing long for 447207 or 47209 48822 Actuator Assembly Housing short for 48206 or 47242 47243 Actuator Cover Kit front cover 47244 Actuator Cover Kit rear cover 47257 Screw Kit includes 1 4 20NC X3 4 Hex Bolt 4 10 24NC Self Tapping Screw 4 47258 Master Cylinder Cap with baffle 48844 Safety Cable Spring with screws 13 Solenoid optional 9F 10 1l 12 Master Cylinder Cross Section Dampener Cross Section z gx N O Rin eh Ali S de a x _ E ar nae opti e ouf eo a a r o o aU APRES e M 4 c T 32 ES ES T S 4 ah odd EE A MM VIS B V y O Ring Damper Piston Wiper S eal M NAAN Sa a Note The check valve has been removed in model numbers Seal Piston Seal 47208 amp 47209 TIE DOWN ENGINEERING LIMITED WARRANTY Limited Warranty TIE DOWN ENGINEERING Inc TIE DOWN warrants its products to be free from defects in materi al and workmanship for one year from date of delivery to the original purchaser when properly installed used and main tained by the purchaser This warranty does not apply to damage or loss caused by any or all of the following circumstances or conditions e Damage caused during installation e Parts accessories materials or components used with or replacing any TIE DOWN brakin
14. ty cables or chains using crossed pattern under tongue or follow trailer manufacturer s directions 4 Connect actuator breakaway cable S hook to the tow vehicle only Do not connect S hook to the safety cables or chains 5 The breakaway system is designed to only operate after the trailer detaches from the tow vehicle and the safety cable chains have failed The breakaway is not a parking brake Do not use as such 6 Ifthe breakaway is accidentally applied while un hitching insert a flat bladed screwdriver into the spring clip slotted hole under the actuator and pry down to release 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 DANGER Tongue weight outside rating limits will interfere with performance of actuator and braking system and the tow vehicle 9 The actuator is designed for use with Free Backing trailer brakes To block braking action in order to back up with other types of brakes use an electric solenoid For reverse trailer movement when braking is are not required place the safety pin in the upper hole on the side of the actuator to block movement of the actuator DANGER Failure to remove pin will also prevent forward braking Pin must be in the lower forward coupler hole as a
15. y 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 WARNING When using drum or disc brakes on tandem axle trailers both axles must be installed with brakes Failure to install brakes on both axles will result in loss of braking performance overheating of brakes amp wheel hub and significantly reduce brake pad life WARNING NEVER ALLOW THE COUPLER LATCH SAFETY PIN TO REMAIN IN THE REVERSE LOCKOUT POSITION HOLE AFTER REVERSE MANEUVERING ALWAYS INSERT COUPLER LATCH SAFETY PIN BACK INTO COUPLER LATCH FAILURE TO REM OVE SAFETY PIN FROM REVERSE LOCK OUT POSITION HOLE WILL PREVENT FORWARD MOVEMENT BREAKING WHICH CAN RESULT IN SERIOUS PROPERTY DAMAGE INJURY OR DEATH Model 80 Trailer Actuator Parts Diagram Adjusting Nut a W Safety Lock M Hole 7 Note When the coupler is placed on the ball the latch should close firmly If it feels loose or too tight the adjustment nut should be turned to correct the fit Model 80 Actuator Part List Description Quantity 1 47250 Master Cylinder Assembly Includes all nuts washers all seals O rings gaskets and filler cap amp seal 11 1 47251 Safety Stop amp Spring EE ae 1 47252 Latch Kit Assembly 1 4 48801 Coupler Housing 5 Roller Kit includes 1 2 X 4 Grade 5 Bolts 2 Lubed 1 2 Hex Center Lock Nut 2 Rollers 2 50302 Cable A
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