Harbor Freight Tools 67649 User's Manual
Contents
1. Wie Hold the Spring back while installing the Spring Bar into the socket on the Weight Distribution Head 2 Release the Spring and adjust the Spring Bar until the spring snaps back into place Pull on the Spring Bar to make sure itis properly attached to the Weight Distribution Head Repeat for the other Retaining Pin Spring 2a and the other Spring Bar 4 hitch ball sold separately Remove the Lock Nuts 10 and Washers 9 from the U bolts 8 Place a U bolt 8 around the bottom link of each Chain 7 Insert the threaded ends of each U bolt into the holes at the end of each Spring Bar as shown Secure with Washers 9 and Lock Nuts 10 Page 4 For technical questions please call 1 800 444 3353 SKU 67649 Hitch Ball Installation Install a properly sized and properly rated hitch ball into the hole at the top of the Weight Distribution Head 2 Secure in place using the washer s and nut s provided with the hitch ball Weight Distribution Head 2 Installation Determine the required ball height a Divide tongue weight by 200 for tow vehicles with overload springs divide it by 100 for vehicles without overload springs and multiply the result to calculate tow vehicle squat Ib Tongue wt a if tow vehicle has overload springs R 100 if tow vehicle has no overload springs X ge z tow vehicle squat b Position trailer parallel to the ground on a flat level surface2. SKU 67649 ATTACHMENT Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning of this manual including all text under subheadings therein before set up or use of this product A Note For additional information regarding the parts listed in the following pages refer to the Assembly Diagram near the end of this manual 1 If Spring Bars 4 were removed reinstall them following steps 1 through 6 on page 4 2 While trailer is not connected measure the distance from front and rear bumpers of towing vehicle to ground Write here front to ground rear to ground 3 Lower trailer coupler onto hitch ball and secure the trailer s ball coupler in place 4 Raise the front of trailer and back of the towing vehicle 3 This will make mounting easier and safer 5 Swing the hooks on the Connection Brackets 3 down SKU 67649 For technical questions please call 1 800 444 3353 Handle 5 Connection Bracket 3 SY A DS D j C Insert Clip to lock Spring 3 A Connect gt Chain to OQ 9 6 Connect Chains a Connect the Chains 7 to the hooks on the Connection Brackets 3 b Slide Handle 5 over pin on Bracket and rotate up completely to secure Chain c Insert Spring Clip through bracket as shown to lock chain in place d Repeat for other bracket and chain Both chains must be of equal length 7 Lower the front of the trailer 8 Re measure height of f
3. from the Connection Brackets 3 Adjust both chains to equal length When applying or releasing tension from the Brackets use the Handle 5 supplied and handle carefully The Spring Bars 4 MUST be removed if the trailer is not attached Check local regulations to determine if other components can be left in place or must also be temporarily removed Wear ANSI approved safety goggles and heavy duty work gloves during assembly Keep assembly area clean and well lit Keep bystanders out of the area during assembly Do not assemble when tired or when under the influence of drugs or medication Install according to DOT regulations SKU 67649 N For technical questions please call 1 800 444 3353 Operation Safety Secure the Spring Clips 18 and adjust according to this manual before use This product is not a toy Do not allow children to play with or near this item Use as intended only Inspect before every use do not use if parts are loose or damaged Do not exceed hitch s rated capacities see SPECIFICATIONS chart Maintain product labels and nameplates These carry important safety information If unreadable or missing contact Harbor Freight Tools for a replacement Carefully load trailer according to trailer supplier s instructions whether a weight distributing hitch is used or not Use according to DOT regulations Service Have your hitch serviced by a qualified repair person
4. using only identical replacement parts This will ensure that the safety of the hitch is maintained Do not use damaged equipment If abnormal noise or vibration occurs have the problem corrected before further use SAVE THESE INSTRUCTIONS Page 3 SPECIFICATIONS Entire System 1 000 Ib Tongue Weight Capacity 10 000 Ib Gross Trailer Weight Hitch Capacity 500 Ib Tongue Weight without Spring Bars 5 000 Ib Gross Trailer Weight Note For greater stability a Sway Control Kit ITEM 96462 sold separately can be used along with this Hitch Note Limit capacities listed above by the capacity of the towing vehicle and any other attachment hardware used UNPACKING When unpacking make sure that all parts listed on page 10 are included If any parts are missing or broken please call Harbor Freight Tools at 1 800 444 3353 as soon as possible INSTALLATION Read the ENTIRE IMPORTANT A SAFETY INFORMATION section at the beginning of this manual including all text under subheadings therein before set up or use of this product Note For additional information regarding the parts listed in the following pages refer to the Assembly Diagram near the end of this manual Spring Bar 4 Installation 1 Apply some axle grease to the round end of one Spring Bar 4 2 Pry one of the Retaining Pin Springs 2a back pulling the Bar Retaining Pin 2b outwards Weight Distribution Head 2 Spring Bar 4
5. E PRODUCT OR THAT HE OR SHE IS QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT IN FACT THE MANUFACTURER AND OR DISTRIBUTOR EXPRESSLY STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS AND NOT BY THE BUYER THE BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO Page 9 PARTS LIST Part Description 1 Squ 1 2a 4 Spring Bar 1000 Ib rating 6 _ 1 2 x 3 3 4 Bolt 7 3 8 Chain 9 links id 8 3 8 U bot sd 9 3 8 Washer Bushing 1 1 2 x 1 1 4 Spacing Rivet pring Clip Record Product s Serial Number Here 3 Note If product has no serial number record month and year of purchase instead Note Some parts are listed and shown for illustration purposes only and are not available individually as replacement parts Page 10 For technical questions please call 1 800 444 3353 SKU 67649 INVYSVIG AT8N3SSV oc z pe H uonnquisig 10819M JO 1u04J WOI MOIA pL JOATY 1 sjeusew Duioeds pue Duioeds 104 JOH SKU 67649 For technical questions please call 1 800 444 3353 Page 11 LIMITED 90 DAY WARRANTY Harbor Freight Tools Co makes every effort to assure that its products meet high quality and durability standards and warrants to the or
6. Haul Master WEIGHT DISTRIBUTION HITCH UE 67649 SET UP AND OPERATING INSTRUCTIONS Visit our website at http www harborfreight com Read this material before using this product Failure to do so can result in serious injury SAVE THIS MANUAL Copyright 2010 by Harbor Freight Tools All rights reserved No portion of this manual or any artwork contained herein may be reproduced in any shape or form without the express written consent of Harbor Freight Tools Diagrams within this manual may not be drawn proportionally Due to continuing improvements actual product may differ slightly from the product described herein Tools required for assembly and service may not be included For technical questions or replacement parts please call 1 800 444 3353 SAVE THIS MANUAL Keep this manual for the safety warnings and precautions assembly operating inspection maintenance and cleaning procedures Write the product s serial number in the back of the manual near the assembly diagram or month and year of purchase if product has no number Keep this manual and the receipt in a safe and dry place for future reference IMPORTANT SAFETY INFORMATION In this manual on the labeling and all other information provided with this product This is the safety alert symbol It is used to alert you to potential personal injury hazards Obey all safety messages that follow this symbol to avoid possible injury or dea
7. Toothed Bolt 16 Washer 15 Nut 12 Square Shank 1 Weight Distribution Head 2 After the angle is set properly insert a Bolt 16 through the upper hole in the Weight Distribution Head 2 Toothed Washers 15 and a Nut 12 as shown above Tighten securely Tighten both 3 4 Nuts 12 to 260 ft lb of torque using a torque wrench sold separately Page 6 For technical questions please call 1 800 444 3353 Connection Bracket Installation Connection Thread a 1 2 Bolt 6 into each Connection Bracket 3 a turn or two Place the Connection Brackets 3 on top of the trailer tongue with the Bolts 6 facing inwards as shown above Swing the Spring bars down under the brackets and pull the Chains straight up with no twist Position each Connection Bracket directly above its chain Tighten the 1 2 Bolts 6 until they contact the trailer and then 1 4 turn more Do not overtighten Permanently installed components are now in place Proceed to operation for final setup and trailer attachment If trailer is not to be attached at this time the Spring Bars 4 MUST be removed Hold onto the Spring Bar while prying the Retaining Pin Spring 2a back pulling the Bar Retaining Pin 2b outwards The Spring Bar should drop out of the Weight Distribution Head 2 Check local regulations to determine if other components can be left in place or must also be temporarily removed
8. and measure the distance from the ground to the top of the ball cup Ground and write it here coupler height Add the distance found in step 1a to the distance from step 1b to get the required ball height tow vehicle squat step 1a coupler height step 1b Coupler Height Oo required ball height Insert Square Shank 1 into tow vehicle receiver Secure it in place with the Lock Pin 17 and the Spring Clip 18 SKU 67649 Weight Distribution Head 2 HIGHEST SETTING Square Shank 1 LOWEST SETTING Determine the attachment point of the Weight Distribution Head 2 to the Square Shank 1 according to the needed connection height calculated in step 1c The Square Shank can be turned upside down if needed Each hole is 1 1 4 of adjustment Insert one of the 3 4 Bolts 16 through the lower hole to hold the Weight Distribution Head 2 in place for now Thread a 3 4 Nut 12 onto the Bolt but do not tighten it yet Spacing Spacing Toothed Washers Rivet 14 13 Weight Distribution Head 2 Angle Set Bolt 2c Bolts 16 Adjust the Spring Bars 4 angle using the Spacing Rivet 14 and from 0 to 7 Spacing Washers 13 until the Spring Bars tilt downward slightly 10 13 Loosen the Angle Set Bolt 2c before adding removing Spacing Washers 13 and tighten afterwards For technical questions please call 1 800 444 3353 Page 5
9. iginal purchaser that this product is free from defects in materials and workmanship for the period of 90 days from the date of purchase This warranty does not apply to damage due directly or indirectly to misuse abuse negligence or accidents repairs or alterations outside our facilities criminal activity improper installation normal wear and tear or to lack of maintenance We shall in no event be liable for death injuries to persons or property or for incidental contingent special or consequential damages arising from the use of our product Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation of exclusion may not apply to you THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS Page 12 For technical questions please call 1 800 444 3353 To take advantage of this warranty the product or part must be returned to us with transportation charges prepaid Proof of purchase date and an explanation of the complaint must accompany the merchandise If our inspection verifies the defect we will either repair or replace the product at our election or we may elect to refund the purchase price if we cannot readily and quickly provide you with a replacement We will return repaired products at our expense but if we determine there is no defect or that the defect resulted from causes n
10. ot within the scope of our warranty then you must bear the cost of returning the product This warranty gives you specific legal rights and you may also have other rights which vary from state to state 3491 Mission Oaks Blvd PO Box 6009 Camarillo CA 93011 800 444 3353 SKU 67649
11. ront and back of towing vehicle Both should be lower than the amounts written in step 2 by an equal distance or up to 1 lower in back The chain lengths need be adjusted by releasing the Brackets and adjusting each chain one link at a time until that measurement is achieved Verify that the chains are adjusted to same length Note The Brackets will be under tension use the Handle 5 supplied and handle carefully to prevent injury Raise the front of the trailer WHENEVER tension will be applied or released from the Brackets Page 7 AFTER USE 1 Note the number of chain links used to make reconnection to the same trailer and load easier 2 Raise the front of trailer and back of the towing vehicle 3 This will make disconnection easier and safer Note The Brackets will be under tension use the Handle 5 supplied and handle carefully to prevent injury 3 Slide Handle 5 over pin on Bracket and CAREFULLY rotate down completely to release Chain Repeat for other side 4 Disconnect trailer from hitch ball 5 The Spring Bars 4 MUST be removed if the trailer is not attached Hold onto the Spring Bar while prying the Retaining Pin Spring 2a back pulling the Bar Retaining Pin 2b outwards The Spring Bar should drop out of the Weight Distribution Head 2 Check local regulations to determine if other components can be left in place or must also be temporarily removed Page 8 For technical questions plea
12. se call 1 800 444 3353 SKU 67649 MAINTENANCE AND SERVICING Procedures not specifically A explained in this manual must be performed only by a qualified technician TO PREVENT AWARNING SERIOUS INJURY FROM ACCIDENTAL OPERATION Disconnect hitch as explained under AFTER USE before performing any inspection maintenance or cleaning procedures TO PREVENT SERIOUS INJURY FROM HITCH FAILURE Do not use damaged equipment If abnormal noise or vibration occurs have the problem corrected before further use 1 BEFORE EACH USE inspect the general condition of the tool Check for loose hardware misalignment or binding of moving parts cracked or broken parts damaged electrical wiring and any other condition that may affect its safe operation 2 AFTER USE wipe external surfaces of the tool with clean cloth 3 Inject axle grease into the grease fittings on the Weight Distribution Head 2 monthly if the Spring Bars are left installed 4 Before installing the Spring Bars 4 clean and apply axle grease to the rounded end SKU 67649 For technical questions please call 1 800 444 3353 PLEASE READ THE FOLLOWING CAREFULLY THE MANUFACTURER AND OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEMBLY DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY NEITHER THE MANUFACTURER OR DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO TH
13. th DANGER indicates a A DANGER hazardous situation which if not avoided will result in death or serious injury AWARNING WARNING indicates a hazardous situation which if not avoided could result in death or serious injury ACAUTION CAUTION used with the safety alert symbol indicates a hazardous situation which if not avoided could result in minor or moderate injury NOTICE is used to NOTICE address practices not related to personal injury CAUTION CAUTION without the safety alert symbol is used to address practices not related to personal injury Hitch Safety Warnings WARNING Read all safety warnings and instructions Failure to follow the warnings and instructions may result in serious injury Save all warnings and instructions for future reference The warnings precautions and instructions discussed in this instruction manual cannot cover all possible conditions and situations that may occur It must be understood by the operator that common sense and caution are factors which cannot be built into this product but must be supplied by the operator Page 2 For technical questions please call 1 800 444 3353 SKU 67649 10 Installation Attachment Safety Assemble only according to these instructions Improper assembly can create hazards Carefully measure and follow all steps and adjustment instructions Raise the front of the trailer WHENEVER tension will be applied or released
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