INSTALLATION, MAINTENANCE & SERVICE BULLETIN
Contents
1. 55 65Nm Torque 1100 1200Nm Torque 550 UNC 600Nm Size 34 16 UNF ad 7 yg 0 Size NUT Torque 35 40Nm Size 13 UNF A Size 7 14 UNF Torque 35 45Nm Torque 600 650Nm N IMPORTANT e Shock absorber fasteners must be tightened at ride height e U bolts must be tightened and torqued using a cross pattern sequence Ensure equal amounts of thread protrude above U bolt nut A CAUTION e Over torque could result in fastener failure e Do not apply any additional lubricants e Failure to follow properly torque can result in loss warranty coverage INSTALLATION MAINTENANCE amp SERVICE BULLETIN K HITCH Pivot Alignment Inner amp Outer Collar square holes must TOEELLLELIIS LI line up inside to outside Torque Washer Hanger Washer Steel Washer Prevailing Nut 5mm rearward offset 5mm forward offset ZN IMPORTANT e Do not fully torque up pivot bolt until Axles are fully aligned Before alignment tighten up pivot bolt to a point where hardened washers can still rotate freely e Adjust all four eccentric collars to achieve Axles alignment INSTALLATION MAINTENANCE amp SERVICE BULLETIN K HITCH Pivot Bolt and Trailmg Arm Bush an KKK Pt a r r 22 FD ne a yyy yyy 100 RUBBER COVERAGE REQ D ON 1 D MUST PASS OVER 1 125 PIN The 1 1 8 bolt should be tight in the centre of the sleeve and have a gap at each end of the sle2. oF 2 BT re p E i a EEE Swe E 7 Maintenance The maintenance frequency may need to be changed subject to application and vehicle operating conditions Any instructions from the vehicle OEM must be considered first 1 Check all fasteners PD 1Service yearly 2 Check U Bolts PD 1 Service Annually 3 Check shock absorbers for leaks and bush wear 1 Service Annually 4 Check HCV for leaks and correct adjustment 1 Service Annually 5 Check pivot bolt TF bush and hanger wear pad for wear and excess movement Annually 6 Check air spring for leaks or damage 1 Service Annually The above recommendations are for On Highway only applications Note Do not confuse misting and sweating with a leaking shock absorber Only a leaking shock absorber needs to be replaced On a leaking shock absorber the oil runs all the way down the shock absorber body If in doubt clean the shock absorber and check it again after a couple of days Misting OUA Inspect with shocks fully extended If you need any further information please call the relevant numbers below or go to the FKH web site
3. numbers INSTALLATION MAINTENANCE amp SERVICE BULLETIN 2 KT Welding Instruction Axle Connection Ey Weld Specification 1 Preheat the axle connection at the axle and suspension seat if recommended 2 Suspension welding surface must be free from grease paint moisture and dirt 3 Welding parameters Standard electrode AWS E 7018 over dried Standard wire AWS ER 70S X Volts 26 30 DCRP Current 275 325 Amps Gas 86 Ar 14 CO2 at 30 35 CFH JEE Pre weld Setup and Measurement Z ImporTANT 1 Place the suspension on a smooth level surface 2 Place the axle in line with trailing arm seat and accurately centre axle relative to the arms 3 Locate the camshafts in their proper positions 4 The arms must remain vertically parallel to each other and square to the axle 5 Clamp and secure the arm assembly to the axle Consult axle manufacturer for preheating specifications and do not concentrate the heat in one area Do not over tighten clamps The arm pivots must remain parallel At least one side arm must seat on the axle firmly but non seated side gap must be no more than 1 5mm U bolts should be installed after completion of welding allow a sufficient cool down period lt H INSTALLATION MAINTENANCE amp SERVICE BULLETIN KHITCH E tacking Length and Placement 1 Tack the axle to the arm near the centre as shown 2 Double check measurement be
4. INSTALLATION MAINTENANCE amp SERVICE BULLETIN KT250 T KT250U KT300T KT300U Contents 1 Preassembly Considerations 2 KT Welding Instruction Axle Connection o Engineering LIT No KL004 3 KT Welding Instruction Suspension Mounting o Engineering LIT No KL005 4 KT Tightening Instruction o Engineering LIT No KL003 Fasteners sizes and torque settings Pivot Alignment Height Control Valve HCV setting 5 Axle Alignment 6 Torque Decal 7 Maintenance lt H INSTALLATION MAINTENANCE amp SERVICE BULLETIN KHITCH 1 Preassembly Considerations o Check if the correct parts have been supplied o Check if the installation drawings are available and match the parts o Check track size axle positioning brake booster orientation before welding o Ride height hubs wheels and tyre size need to agree with the application o Are the correct equipment and tools available to do the installation o Only skilled personnel should be in charge of the installation o FKH KT suspension parts description HABER 455 y 20 Gin Peel Hegel 4 Sone Seek Heigl FH TRA A Se CAA BG 17 chee LH TEAL ARPA ASSES BUSH 12 ce RH PLATE UPPER ARSAC WEAR PAD HARGCER Bee CEET LEVEL WAL VE PO CONNECT WERTECAL SHOE HARD ae PAC ARAD Fasten ER OT ACT Cue AWE U BOAT ASSEMBLY i HECHT CONTECH Wal ve EN HECAT CONTROL VALVE MOUNTING HI NOTE See the FKH Parts View KPS 001 1112 for all the part
5. eve The reason for that is that the rubber coating on the inside of the sleeve tapers from the middle at 1 1 8 out to approximately 1 5 16 at each end The purpose of the tapered inside rubber coating is to prevent the steel bush rusting to the pivot bolt The bush and the trailing arm is securely locked in to position due to clamping force of the pivot bolt after it is torqued to 1100 1200Nm Note There are other trailing arm bushes which do not have the internal rubber in the steel bush W amp C Hendrickson Aftermarket lt H INSTALLATION MAINTENANCE amp SERVICE BULLETIN KHITCH HCY Setting ANY HCV LINKAGE BRACKET SHOULD BE WELDED NEAR THE AXLES NEUTRAL PLANE _ Overslung at ride height Underslung at ride height Correct setup Incorrect setup Z IMPORTANT e HCV can be used in right hand or left hand e Unless approved by Fuwa K Hitch DO NOT use more than one HCV per trailer e When assembling air fittings be mindful that excess pipe compound or teflon tape may contaminate the air system INSTALLATION MAINTENANCE amp SERVICE BULLETIN 5 Axle Alignment The following steps are to ensure that proper axle and suspension alignment is achieved Brakes must be released pull the trailer in a straight line on a level smooth surface Check that the tyres are the same size and have equal inflation pressure Set the suspension to correct ride height Align all three ax
6. fore commencing welding EE welding Direction and Sequence 1 Start welding at rear side of the axle connection 2 Place four single root pass welds at all areas 3 Continue with second and third weld passes WELD START POINT 2 E o 5q 5 7 WELD a 4 k END POINT 4 E WELD SEQUENCE NUMBER IMPORTANT e Make sure tacks are near the seat centre Make sure all 4 root pass welds are completed before proceeding to next weld pass stage lt H INSTALLATION MAINTENANCE amp SERVICE BULLETIN KHITCH Welding Size and Location 1 Perform three weld passes as shown o gt FIRST PASS THIRD PASS 1 Accurately perform weld passes to specified length 4 AN IMPORTANT e All axle seat connections require three weld passes e Do not wrap welds 5s around axle seat corners A N CAUTION e Avoid all cold laps and undercuts Fill all craters Clean weld between each pass e Failure to follow properly procedures can result in loss warranty coverage INSTALLATION MAINTENANCE amp SERVICE BULLETIN K HITCH 3 KT Welding Instruction Suspension Mounting Mounting Plate with Spacer N IMPORTANT e Do not weld within 12mm between mating edge of the suspension component and trailer frame e It is responsibility of the suspension installer to provide both proper welding parameters and adequate attachment for the suspension e D
7. les within the tolerances Fig A Torque pivot bolt to 1100 1200Nm Re check the Alignment at the 1 Service 5000 10000km or 2 4weeks m MMM l jii l B pr pr Lim jP Ty ed J z Polen TIE Fig A INSTALLATION MAINTENANCE amp SERVICE BULLETIN K HITCH 6 Torque Decal yh TORQUE REQUIREMENTS Hanger Pivot Bolt gt lt F Air Spring K HITCH Air Spring Nut toner 35 45Nm U Bolts must be tightened Service Intervals amp torqued using a cross Ist Service 5000 10000kms or 2 4 weeks pattern sequence 1 4 2 3 there after 2 Every 100 000kms or every 50 000kms for heavy duty applications www khitch com au FHDT 001 Rev The above Torque Decal sticker should be attached to the trailer chassis after it has been painted close to the Chassis VIN Number Decal clearly accessible and visible PE INSTALLATION MAINTENANCE KF amp SERVICE BULLETIN
8. o not attach air spring direct to trailer frame INSTALLATION MAINTENANCE amp SERVICE BULLETIN K HITCH Z IMPORTANT e Do not weld within 12mm between mating edge of the suspension component and trailer frame e Insure that the left and right hangers are welded on the same perpendicular line to the chassis Axle alignment INSTALLATION MAINTENANCE amp SERVICE BULLETIN K HITCH Knee Bracket C Channel Bracket N IMPORTANT e The above methods are common practices but individual installations may vary lt H INSTALLATION MAINTENANCE Kr amp SERVICE BULLETIN KHITCH 4 KT Tightening Instruction Size 34 16 UNF A Size 1 1 s 12 UNF A Size M24x3 Size 15 18 Torque 55 65Nm Toraue 1100 1200Nm Torque 550 UNC 600Nm Size 34 16 UNF Size 13 UNF A Size 5 14 UNF Torque 35 45Nm Torque 600 650Nm N IMPORTANT e Shock absorber fasteners must be tightened at ride height e U bolts must be tightened and torqued using a cross pattern sequence Ensure equal amounts of thread protrude above U bolt nut A N caution e Over torque could result in fastener failure e Do not apply any additional lubricants e Failure to follow properly torque can result in loss warranty coverage lt I INSTALLATION MAINTENANCE Cr amp SERVICE BULLETIN K HITCH Size 34 16 UNF A size 1 1 5 12 UNF A Size M24x3 Size 18 Torque
Download Pdf Manuals
Related Search