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OWNER S GUIDE 8A000729 DuraLift 13.5 13,500 CAPACITY Link Mfg. Ltd. 223 15th St. N.E. Sioux Center, IA USA 51250-2120 www.linkmfg.com QUESTIONS?

Date Installed: Refer to separate Installation Instructions for installation details. 80003192 JAN 14, 2015 Table of Contents 1. Introduction 2 2. Axle Identification 3 3. Safety Warnings 4 4.

1 OWNER S GUIDE 8A DuraLift ,500 CAPACITY Link Mfg. Ltd th St. N.E. Sioux Center, IA USA QUESTIONS? CALL CUSTOMER SERVICE DEALER / INSTALLER: Complete this section and give to vehicle owner. Serial No: Part No: 8A Capacity: 13,500 lbs. Date Installed: Refer to separate Installation Instructions for installation details JAN 14, 2015 Table of Contents 1. Introduction 2 2. Axle Identification 3 3. Safety Warnings 4 4. Operation Periodic Maintenance Lubrication Points 7 7. Troubleshooting 8 8. Warranty 8 9. Wheel End Kits, Service Parts and Service Kits References 28 IMPORTANT: PLEASE READ THIS ENTIRE MANUAL BEFORE OPERATING YOUR NEW LINK DURALIFT 13.5 AUXILIARY SUSPENSION AND KEEP IT FOR FUTURE REFERENCE. 1. INTRODUCTION: Thank you for choosing a Link Auxiliary Suspension. We want to help you to get the best results from the suspension and to operate it safely. This manual contains information to introduce you to the Link DuraLift 13.5 Auxiliary Suspension and to assist you with its operation and maintenance. This manual is intended solely for use with this product. All information in this manual is based on the latest information available at the time of printing. Link Manufacturing reserves the right to change its products or manuals at any time without notice. Contact Link at (800) or visit for information on recent changes to products. Page 2

2 2. AXLE IDENTIFICATION The axle identification label is located on the driver s side of the suspension as shown below. The label contains the suspension part number and a unique serial number. Page 3 3. SAFTEY WARNINGS CAUTION Do not lower your lift axle when traveling at speeds greater than 15 mph. This could result in component damage. CAUTION Do not exceed 13,500 lbs on the lift axle suspension. Failure to heed this warning can result in improper weight distribution or component damage. CAUTION Do not exceed 20 psi in the lift axle s ride springs when the vehicle is unloaded. Failure to heed this warning can result in improper weight distribution or component damage. 4. OPERATION 4.1 Raising Your Lift Axle To raise the axle, move the toggle switch to the Raise position. Page 4

3 4. OPERATION (continued) 4.2 Lowering Your Lift Axle To lower the axle, move the toggle switch to the Lower position. CAUTION Do not lower your lift axle when traveling at speeds greater than 15 mph. This could result in component damage Use the regulator to adjust the air pressure on the gauge to the appropriate air pressure for the vehicle load conditions. Refer to chart below for recommended pressures. 13.5K AIR PRESSURE AXLE LOAD CHART LOAD IN LBS AT GROUND (For reference only. Use scale to determine actual loads.) 13.5K PSI CAUTION Do not exceed 20 psi in the lift axle s ride springs when the vehicle is unloaded. Failure to heed this warning can result in improper weight distribution or component damage. CAUTION Do not exceed 13,500 lbs on the lift axle suspension. Failure to heed this warning can result in improper weight distribution or component damage. Page 5 LOAD IN LBS AT GROUND 13.5K PSI PERIODIC MAINTENANCE Daily After first month or 1,000 miles Every month or 1,000 miles of use Every three months or 2,500 miles of use Every twelve months or 10,000 miles of use Check controls and ensure proper operation. Check for tire inflation, damage, or excessive wear. Check brakes for damage and ensure proper operation. Check axle assemblies for damage or loose components. Check lift springs and load springs for damage or leaks. Check for bent, cracked, or broken main structural components. Inspect bushings for missing, torn, cracked or excessive gapping. Inspect wheel ends for leaking seals or other damage. Check for signs of irregular movement in suspension components. Check for loose, missing, or damaged fasteners. Check for loose suspension fasteners (Tighten to values given in Torque Table on page 7). Verify all grease points are properly lubricated (Multipurpose NLGI 2). Check wheel bearing oil level and inspect wheels for leaks (SAE 80W-90 Mineral Based Gear Lube). Check suspension for debris rubbing air springs. Check for worn steering stabilizer shocks. Grease camshaft bushings (Multipurpose NLGI 2). Check for worn suspension bushings. Check for loose suspension fasteners (Tighten to values given in Torque Table on page 7). Check brake lining wear and replace any cracked, broken or oil soaked linings. Inspect brake drums for heat checks, grooves, hot spots, glazing, cracks and out of round and replace if necessary. Inspect wheel ends for excessive play. Grease slack adjusters (Multipurpose NLGI 2). Replace wheel bearings lubricating oil (SAE 80W-90 Mineral Based Gear Lube). Check brake chambers and slack adjusters for proper function and excessive wear. Inspect brake rollers, roller shafts, anchor pins and bushings for excessive wear and replace if necessary. Check shoes for bent shoe ribs, cracks in shoe table welds and elongated rivet holes and replace if necessary. Inspect suspension air controls for proper function and leaks. Page 6

TORQUE TABLE SUSPENSION PIVOT FASTENERS... 3/4 UNF... 320-360 FT-LBS FRAME MOUNT FASTENERS... 5/8 UNC... 160-180 FT-LBS HANGER FASTENERS... 1/2 UNC... 90-120 FT-LBS TIE ROD CLAMP FASTENERS... 5/8 UNC... 45-60 FT-LBS STEERING STOP JAM NUT.

4 TORQUE TABLE SUSPENSION PIVOT FASTENERS... 3/4 UNF FT-LBS FRAME MOUNT FASTENERS... 5/8 UNC FT-LBS HANGER FASTENERS... 1/2 UNC FT-LBS TIE ROD CLAMP FASTENERS... 5/8 UNC FT-LBS STEERING STOP JAM NUT... 5/8 UNC FT-LBS AIR SPRING NUT... 3/4 UNC FT-LBS AIR SPRING NUT... 1/2 UNC FT-LBS AIR SPRING BOLT... 3/8 UNC FT-LBS 6. LUBRICATION POINTS Page 7 7. TROUBLESHOOTING GUIDE TROUBLE PROBABLE CAUSE REMEDY Axle will not stay up Punctured Load Air Springs Loose Air Fittings Damaged Air Lines Damaged or Worn Air Springs Other Components too close to Air Spring Check and retighten. Check for excessive wear. Replace if worn or damaged. Check for clearance all around air spring under full load and deflated. Move anything coming in contact with air springs. Loose Convolution Ribs Under Extended Air Springs Improper ride height Check for proper ride height. A) Use smaller tires. Air Spring Separation at End Plates Lift Air Spring Wear or Broken Bumper Over Extended Air Springs Improper ride height Over Extended Load Springs Crushes lift bag Check for proper ride height. A) Use bigger tires. B) Lower suspension. Check for proper ride height. A) Use bigger tires B) Lower suspension. 8. WARRANTY Refer to our warranty for Link Auxiliary Suspensions by going to our website at Select the Auxiliary Suspension product line, the desired model, and then the Warranty tab. Page 8

5 9. WHEEL END KIT, SERVICE PARTS, AND SERVICE KITS WHEEL END KIT NUMBER DESCRIPTION 840A0166 3/4 Stud Piloted Hubs & Drums 840A0167 Hub Piloted Hubs & Drums 840A0168 Hub Piloted Hubs & Drums for use with 19.5 Wheels 840A0169 Less Hubs & Drums (Bearings, Seals, & Hardware only) PART NUMBER / KIT NUMBER DESCRIPTION 800A0319 Complete Bushing Service Kit 800A0320 Upper Arm Service Kit 800A0321 Lower Arm Service Kit 800A0322 Li Spring Service Kit 800A0323 Load Spring Service Kit 800A0324 Kingpin Service Kit 800A0325 Complete Kingpin Shim Kit 800A0326 Complete Cam Service Kit 800A0327 Brake Service Kit 800A0328 Slack Adjuster Service Kit 800A0329 Steering Stop Bolt Service Kit 810A0104 Hanger Weldment 830A0316 Axle Weldment 840A0160 Le Hand Knuckle Assembly 840A0161 Right Hand Knuckle Assembly Complete Tie Rod Assembly Tie Rod Cross Tube Assembly Tie Rod Le Hand End Tie Rod Right Hand End Le Hand Brake Camsha Right Hand Brake Camsha Brake Chamber Steering Stabilizer Kit Kits and Parts listed above are shown on the following pages. Page 9 840A WHEEL END KIT ITEM PART NUMBER DESCRIPTION BEARING-ROLLER, CONE OUTER BEARING-ROLLER, CONE INNER ASSEMBLY-HUB & DRUM, STUD (RH) 15 X ASSEMBLY-HUB & DRUM, STUD (LH) 15 X SEAL-OIL CAP-HUB, 6 HOLE, 4.5 BOLT CIRCLE NUT-PRO-TORQ, /16 X 3/4 UNC HEX CAP SCR (GR5) /16 LOCK WASHER Page 10

6 840A WHEEL END KIT ITEM PART NUMBER DESCRIPTION BEARING-ROLLER, CONE OUTER BEARING-ROLLER, CONE INNER SEAL-OIL CAP-HUB, 6 HOLE, 4.5 BOLT CIRCLE NUT-PRO-TORQ, /16 X 3/4 UNC HEX CAP SCR (GR5) /16 LOCK WASHER A ASSEMBLY-HUB & DRUM, FN-15X4 Page A WHEEL END KIT ITEM PART NUMBER DESCRIPTION BEARING-ROLLER, CONE OUTER BEARING-ROLLER, CONE INNER HUB & DRUM-FN, 15X SEAL-OIL NUT-FLANGE, M22X CAP-HUB, 6 HOLE, 4.5 BOLT CIRCLE NUT-PRO-TORQ, /16 X 3/4 UNC HEX CAP SCR (GR5) /16 LOCK WASHER Page 12

7 840A WHEEL END KIT ITEM PART NUMBER DESCRIPTION BEARING-ROLLER, CONE OUTER BEARING-ROLLER, CONE INNER SEAL-OIL CAP-HUB, 6 HOLE, 4.5 BOLT CIRCLE NUT-PRO-TORQ, /16 X 3/4 UNC HEX CAP SCR (GR5) /16 LOCK WASHER Page 13 8A SERVICE PARTS ITEM PART NUMBER DESCRIPTION CAMSHAFT-LH, 15X4 Q PLUS CAMSHAFT-RH, 15X4 Q PLUS CHAMBER-BRAKE, TYPE ASSEMBLY-ROD, TIE 5 810A0104 HANGER-WELDMENT 6 830A0316 AXLE-FABRICATED, 13.5K 7 840A0160 KNUCKLE-MACHINED, LH ASSY 8 840A0161 KNUCKLE-MACHINED, RH ASSY Page 14

8 SERVICE PARTS ITEM PART NUMBER DESCRIPTION TIE ROD END ASSM. (LH THREAD) TIE ROD END ASSM. (RH THREAD) ASSEMBLY-TUBE, TIE ROD Page A COMPLETE BUSHING SERVICE KIT 1 3/4 HARDENED WASHER, ZINC PLATED 16 2 BUSHING 4 3 BUSHING 16 4 TUBE-BUSHING 4 5 TUBE-BUSHING 2 6 TUBE-BUSHING 4 7 5/8 X 4 3/4 UNF HEX CAP SCR (GR 8) O&P 2 8 3/4 X 9 UNF HEX CAP SCR (GR 8) O&P 4 9 3/4 X 5 3/4 UNF HEX CAP SCR (GR 8) O&P /8 UNF HEX TOP LOCK NUT (GR C) O&P /4 UNF HEX TOP LOCK NUT (GR C) O&P 8 Page 16

9 800A UPPER ARM SERVICE KIT 1 3/4 HARDENED WASHER, ZINC PLATED 4 2 3/4 X 5 3/4 UNF HEX CAP SCR (GR 8) O&P 2 3 3/4 UNF HEX TOP LOCK NUT (GR C) O&P 2 4 ARM-CONNECTING - ASSY 1 Page A LOWER ARM SERVICE KIT 1 3/4 HARDENED WASHER, ZINC PLATED 4 2 PLATE-SWIVEL, LIFT 1 3 5/8 X 4 3/4 UNF HEX CAP SCR (GR 8) O&P 1 4 3/4 X 9 UNF HEX CAP SCR (GR 8) O&P 2 5 5/8 UNF HEX TOP LOCK NUT (GR C) O&P 1 6 3/4 UNF HEX TOP LOCK NUT (GR C) O&P 2 7 WELDMENT-LIFT ARM ASSY 1 Page 18

10 800A LIFT SPRING SERVICE KIT 1 SPRING-AIR 1 2 3/4 UNF HEX JAM NUT, O&P 1 3 1/2 UNC SERRATED FLANGE NUT 3 Page A LOAD SPRING SERVICE KIT 1 SPRING-AIR 1 2 3/8 X 1 UNC HEX CAP SCR (GR 8) O&P 2 3 3/4 UNF HEX JAM NUT, O&P 1 4 1/2 UNC SERRATED FLANGE NUT 1 5 3/8 LOCK WASHER 2 Page 20

11 800A KINGPIN SERVICE KIT 1 PIN-DRAW, LOCKING 1 2 BEARING-THRUST 1 3 SHIM (.030) 1 4 SHIM (.010) 1 5 SHIM (.005) 1 6 BUSHING-KNUCKLE 2 7 SEAL-KNUCKLE 2 8 PIN-KING, 13.5K (1.88) 1 9 CAP-KING PIN 2 10 FITTING-GREASE, 1/8-27 STR THD FORM /16 UNC TOP LOCK FL NUT (GR G) O&P 1 Page A COMPLETE KINGPIN SHIM KIT 1 SHIM (.030) 2 2 SHIM (.010) 2 3 SHIM (.005) 2 Page 22

12 800A COMPLETE CAM SERVICE KIT 1 RETAINING RING-CAMSHAFT 2 2 WASHER-CAM HEAD 2 3 WASHER-CAMSHAFT (1.88 X 1.26 X.06) 2 4 WASHER-CAMSHAFT (2.38 X 1.53 X.13) 2 5 SEAL-CAMSHAFT 4 6 BUSHING-CAMSHAFT 4 7 ROLLER-CAM 4 Page A BRAKE SERVICE KIT 1 5/8 HARDENED WASHER, ZINC PLATED 2 2 SPRING-RETURN, SHOE 1 3 SPRING-RETAINER, SHOE 2 4 SPRING RETAINER-CAM 2 5 MOUNT BAR-SPRING 2 6 ROLLER-CAM 2 7 PLATE-ANCHOR 2 8 ANCHOR-BRAKE SHOE 2 9 SHOE-BRAKE, 15 X 4 Q PLUS /8 X 4 3/4 UNF HEX CAP SCR (GR 8) O&P /8 UNF HEX TOP LOCK NUT (GR C) O&P 2 Page 24

800A0328 - SLACK ADJUSTER SERVICE KIT 1 SLACK ADJUSTER - 5.

13 800A SLACK ADJUSTER SERVICE KIT 1 SLACK ADJUSTER KIT-CONNECTING, SLACK ADJUSTER 1 Page A STEERING STOP BOLT SERVICE KIT 1 BOLT-STOP, STEERING 1 2 5/8 UNC HEX JAM NUT 1 Page 26

14 STEERING STABILIZER KIT 1 SHOCK ABSORBER, WIDE BODY 2 2 BUSHING-SHOCK, ACETAL 4 Page REFERENCES Wherever possible, Link Manufacturing, LTD encourages the use of best prac ces in the industry in service and support of the products it manufactures. Many of these recommended prac ces that Link Manufacturing, LTD supports can be found in documenta on compiled by The Technology & Maintenance Council (TMC). To obtain copies of the following Recommend Prac ce (RP's), contact TMC at TMC/ATA Phone: Mill Road Website: tmc.truckline.com Alexandria, VA Online ordering: TMC RP 222C TMC RP 607B TMC RP 608B TMC RP 609B TMC RP 618A TMC RP 622A TMC RP 631B TMC RP 644A TMC RP 645 TMC RP 648 TMC RP 651 TMC RP 1503 TMC RP 1515 User s Guide to Wheels and Rims Preventa ve Maintenance and Inspec on of S-Cam Founda on Brakes Brake Drums and Rotors Self Adjus ng and Manual Brake Adjuster Removal, Installa on, and Maintenance Wheel Bearing Adjustment Procedure Wheel Seal and Bearing Removal, Installa on, and Maintenance Recommenda ons For Wheel End Lubrica on Wheel End Condi ons Analysis Guide Tie Rod End Inspec on and Maintenance Procedure Troubleshoo ng Ride Complaints Steer Axle Maintenance Guidelines Brake Maintenance Guidelines for Severe Voca onal Applica ons Auxiliary Axle Maintenance Guidelines For Voca onal Vehicles LINK MANUFACTURING, LTD TH ST. NE, SIOUX CENTER, IA Page 28

OWNER S GUIDE 8A DURALIFT II 13,200 LB. CAPACITY. Link Mfg. Ltd th St. N.E. Sioux Center, IA USA

OWNER S GUIDE 8A DURALIFT II 13,200 LB. CAPACITY. Link Mfg. Ltd th St. N.E. Sioux Center, IA USA OWNER S GUIDE 8A000715 DURALIFT II 13,200 LB. CAPACITY Link Mfg. Ltd. 223 15th St. N.E. Sioux Center, IA USA 51250-2120 www.linkmfg.com QUESTIONS? CALL CUSTOMER SERVICE 1-800-222-6283 DEALER / INSTALLER: