AirTek AT90 Spezifikationen Seite 1

L351APPENDIXfront axle & suspensionHENDrIcksoNAIrtEk / softEkOverview Front SuspensionsThe Blue Bird All American is equipped with one of two fron

Introduction 2 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesSECTION 1IntroductionThis publication is intended to acquaint and assist maintenance personn

Component Replacement 92 17730-248AIRTEK®•SOFTEK®for Blue Bird Buses20. Apply loctite to the three brake spider bolts prior to installation into the b

17730-248 93 Component ReplacementAIRTEK®•SOFTEK®for Blue Bird Buses12. Inspect the cross tube for dents, cracks, or thread damage. Replace the cross

Plumbing Diagrams 94 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesSECTION 10Plumbing DiagramsAIRTEK SINGLE HEIGHT CONTROL VALVE – 10KWhen replacing or i

17730-248 95 Plumbing DiagramsAIRTEK®•SOFTEK®for Blue Bird BusesAIRTEK DUAL HEIGHT CONTROL VALVES – 14.6KWhen replacing or installing nylon air line t

96 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesL1381APPENDIXSERVICE MANUAL

17730–248 AppendixA-97Reference MaterialThis technical publication covers Hendrickson Truck Suspension’s recommended procedures for our parts/products

Appendix 17730–248A-98AIRTEK/SOFTEKTROUBLESHOOTING GUIDECONDITION POSSIBLE CAUSE CORRECTIONWorn or damaged kingpins andkingpin bushingsDirt in system–

17730–248 AppendixA-99AIRTEK/SOFTEKTROUBLESHOOTING GUIDE (CONTINUED)CONDITION POSSIBLE CAUSE CORRECTIONTie rod ends are worn and requirereplacementTie

AIRTEK for Blue Bird Vision Buses - 10K CapacityHendrickson Recommended Torque Values Provided in Foot PoundsA-100Appendix 17730–248A-100L1421APPENDIX

AIRTEK for Blue Bird Vision Buses – 10KHENDRICKSON RECOMMENDED TORQUE SPECIFICATIONSNO. COMPONENT QTY. SIZETORQUE VALUE(in foot pounds)1 Front Frame H

17730-248 3 Product DescriptionAIRTEK®•SOFTEK®for Blue Bird BusesSECTION 2Product DescriptionBLUE BIRD VISION BUSESFIGURE 2-1 FIGURE 2-2 AIRTEK®Air Su

A-102SOFTEK for Blue Bird Vision Buses - 8K/10K CapacityHendrickson Recommended Torque Values Provided in Foot PoundsFor vehicles builtprior to 11/066

SOFTEK for Blue Bird Vision Buses – 8K/10KHENDRICKSON RECOMMENDED TORQUE SPECIFICATIONSNO. COMPONENT QTY. SIZETORQUE VALUE(in foot pounds)1 Front Fram

A-104Appendix 17730–248AIRTEK for Blue Bird All American Buses - 14.6K CapacityHendrickson Recommended Torque Values Provided in Foot PoundsA-104L1461

AIRTEK for Blue Bird All American Buses – 14.6KHENDRICKSON RECOMMENDED TORQUE SPECIFICATIONSNO. COMPONENT QTY. SIZETORQUE VALUE(in foot pounds) (in Nm

A-106Appendix 17730–248SOFTEK for Blue Bird All American Buses - 13.2K/14.6K CapacityHendrickson Recommended Torque Values Provided in Foot PoundsA-10

SOFTEK for Blue Bird All American Buses – 13.2K/14.6KHENDRICKSON RECOMMENDED TORQUE SPECIFICATIONSNO. COMPONENT QTY. SIZETORQUE VALUE(in foot pounds)

A-108AIRTEK for Blue Bird BusesFRONT AIR MODULE SUSPENSION ALIGNMENT SPECIFICATIONCAMBER1DESIGN SPECIFICATIONRANGEMINIMUM MAXIMUMLEFT 0.00º ± 1.0º -1

A-109SOFTEK for Blue Bird BusesFRONT AIR MODULE SUSPENSION ALIGNMENT SPECIFICATIONCAMBER1DESIGN SPECIFICATIONRANGEMINIMUM MAXIMUMLEFT 0.00º ± 1.0º -1

Technical Procedure Quiz 17730–248A-110Technical Procedure Publication Quiz1) What three items have the greatest influence on tire wear?a) Toeb) Air P

17730–248 Technical Procedure QuizA-11113) To remove the STEERTEK knuckle you must.a) Drive the kingpin out of the axle boreb) Remove the locking pin

Product Description 4 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesSTEERTEK — The box-shaped design provides a stiffer axle and resists torsio

Technical Procedure Quiz 17730–248A-11225) Prior to performing a total vehicle alignment the following components must be inspected.a) Front and rear

17730-248 5 Product DescriptionAIRTEK®•SOFTEK®for Blue Bird BusesTECHNICAL NOTES1. AIRTEK and SOFTEK are approved for 100% on-highway use; other appli

Important Safety Notice 6 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesSECTION 3Important Safety NoticeProper maintenance, service and repair are import

17730-248 7 Important Safety NoticeAIRTEK®•SOFTEK®for Blue Bird BusesSAFETY PRECAUTIONSFASTENERSLOOSE OR OVER TORQUED FASTENERS CAN CAUSE COMPONENT DA

Important Safety Notice 8 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesTORCH/WELDINGDO NOT USE A CUTTING TORCH TO REMOVE ANY ATTACHING FASTENERS. THE US

17730-248 9 Important Safety NoticeAIRTEK®•SOFTEK®for Blue Bird BusesSUPPORT THE VEHICLE PRIOR TO SERVICINGPLACE THE VEHICLE ON A LEVEL FLOOR AND CH

Important Safety Notice 10 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesPARTS CLEANINGSOLVENT CLEANERS CAN BE FLAMMABLE, POISONOUS AND CAUSE BURNS. TO H

SECTION 4Special ToolsThese shop made tools are designed to install and remove kingpin bushings. Bushing tools are made from cold rolledsteel or equiv

L36SERVICE MANUALSofTek Front Suspension00106294mRight Side ShownLeft Side Symetricalunless otherwise noted.BBACDGGGG

SECTION 5Parts ListBlue Bird Vision Buses - 10K CapacityParts Lists 12 17730-248L541APPENDIXSERVICE MANUAL

1 64075-002L Air Spring 22 60850-001 Air Spring Bracket 259427-008 HCV, Link Mount & Linkage Assembly 1(Includes Key Nos. 3-11)3 59935-004 Height

Blue Bird Vision Buses - 8K/10K CapacityFor vehicles builtprior to 11/061011911124549488a5024745154643414313a17161617141417181712119101145247451494845

SOFTEK®for Blue Bird Vision Buses - 8K/10K Capacity1 58913-009L Shock Absorber (Replaces 58913-007) 22 **¾"-10 UNC Upper Shock Bolt 23 **¾"-

Blue Bird All American Buses14.6K Capacity - Left Hand Drive Steertek AxleParts Lists 16 17730-248L581APPENDIXSERVICE MANUAL

AIRTEK®for Blue Bird All American Buses - 14.6K Capacity1 66865-002L Air Spring 22 66807-001 Air Spring Bracket 23 22962-014 ½" Hardened Washer 2

Blue Bird All American Buses13.2K/14.6K Capacity - Left Hand Drive Steertek Axle Parts Lists 18 17730-248L601APPENDIXSERVICE MANUAL

SOFTEK®for Blue Bird All American Buses - 13.2K/14.6K Capacity1 58913-010L Shock Absorber 22 **¾"-10 UNC Upper Shock Bolt 23 **¾"-10 UNC Low

13.2K/14.6K Capacity Right Hand Drive for Blue Bird All American BusesSTEERTEK Axle Assembly 1(Includes Key Nos. 1-25)67905-402 SOFTEK Standard Drop -

SECTION 6On Highway and On Roadway Recommended Towing ProcedureHendrickson recommends that a vehicle equipped with a STEERTEK axle be towed by the fol

SERVICE MANUALL37FRONT AXLE & SUSPENSIONFront Axle Alignment Specs Caster: 4.5° ± 1.5° positive Camber: ± 1.0° (left & right) 2 Total Cro

Towing Procedure 22 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesAXLE FORK LIFT METHODThis is an alternative method for towing the vehicle, but requires

17730-248 23 Towing ProcedureAIRTEK®•SOFTEK®for Blue Bird BusesOFF ROADWAY TOWING METHODWHEN A VEHICLE IS DISABLED AND EQUIPPED WITH A STEERT

Preventive Maintenance 24 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesSECTION 7Preventive MaintenanceFollowing appropriate inspection procedure is impo

17730-248 25 Preventive MaintenanceAIRTEK®•SOFTEK®for Blue Bird BusesLUBRICATION INTERVALSFor vehicles equipped with the STEERTEK axle, regular lubric

Preventive Maintenance 26 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesTIE ROD END LUBRICATION LUBRICATION PROCEDURE1. Turn the vehicle wheels straight

17730-248 27 Preventive MaintenanceAIRTEK®•SOFTEK®for Blue Bird BusesTIE ROD END INSPECTIONINSPECTION PROCEDUREBefore beginning this inspection proced

Preventive Maintenance 28 17730-248AIRTEK®•SOFTEK®for Blue Bird Buses8. By hand or using a pipe wrench, with jaw protectors to avoid gouging the cross

17730-248 29 Preventive MaintenanceAIRTEK®•SOFTEK®for Blue Bird BusesCLAMP GROUP RE-TORQUE INTERVAL 1. Clamp group locknuts must be torque to specific

Preventive Maintenance 30 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesThe most common conditions of concern are: Overall Fast Wear (Miles per 32nd) Fea

17730-248 31 Preventive MaintenanceAIRTEK®•SOFTEK®for Blue Bird BusesFIGURE 7-13Diagonal Wear — Can be described as localized flat spots worndiagonall

L38SERVICE MANUALAirTek Front Air Suspension00106294mBBAGCEESHOCK LENGTH@ RIDE HT:FE=17.25±.25FHHJJHOUTBOARDSTUD ONLYD

Preventive Maintenance 32 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesAXLE WRAP LINER INSPECTIONFIGURE 7-16INSPECTION PROCEDURE Axle wrap liners are in

17730-248 33 Preventive MaintenanceAIRTEK®•SOFTEK®for Blue Bird BusesVISUAL INSPECTION Look for these potential problems when doing a visual inspectio

Preventive Maintenance 34 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesKINGPIN BUSHING INSPECTIONINSPECTION PROCEDURE (STEERING KNUCKLE LATERAL MOVEMENT

17730-248 35 Preventive MaintenanceAIRTEK®•SOFTEK®for Blue Bird BusesSTEERING KNUCKLE INSPECTIONCHECKING VERTICAL END PLAY (UP AND DOWN MOVEMENT)The o

Preventive Maintenance 36 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesSHACKLE THRUST WASHER INSPECTION (If Equipped)NOTE SOFTEK Vision 8K capacity vehi

17730-248 37 Preventive MaintenanceAIRTEK®•SOFTEK®for Blue Bird BusesFRONT HANGER/REAR SHACKLE BRACKET SURFACE PAINT WEARThe Hendrickson front suspens

Alignment & Adjustments 38 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesSECTION 8Alignment & AdjustmentsALIGNMENT DEFINITIONSFIGURE 8-1Ackermann

17730-248 39 Alignment & AdjustmentsAIRTEK®•SOFTEK®for Blue Bird BusesFIGURE 8-4Kingpin Inclination (KPI) — The inward tilt of the kingpin from th

Alignment & Adjustments 40 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesFIGURE 8-8Toe-Out on Turns — (See Ackermann Geometry).Excessive turning angl

17730-248 41 Alignment & AdjustmentsAIRTEK®•SOFTEK®for Blue Bird BusesREAR AXLE AND REAR SUSPENSIONRear axle misalignment can cause front tire wea

SERVICE MANUALL39FRONT AXLE & SUSPENSIONTorque Requirements k e y d e s c r i p t i o n t o r q u e +- 5% A Front Hanger Pivot 300 ft.l

Alignment & Adjustments 42 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesMajor wheel alignment is accomplished in the following sequence of operation

17730-248 43 Alignment & AdjustmentsAIRTEK®•SOFTEK®for Blue Bird BusesAIRTEK RIDE HEIGHT ADJUSTMENT1. Drive the vehicle onto a level surface.2. Fr

Alignment & Adjustments 44 17730-248AIRTEK®•SOFTEK®for Blue Bird Buses9. The different referenced ride height measurements are as specified in the

17730-248 45 Alignment & AdjustmentsAIRTEK®•SOFTEK®for Blue Bird BusesAIRTEK HEIGHT CONTROL VALVE TESTThe height control valve test can be done wi

Alignment & Adjustments 46 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesSTEERING STOP ADJUSTMENT PROCEDUREWhen the axle or lower steering knuckle is

17730-248 47 Alignment & AdjustmentsAIRTEK®•SOFTEK®for Blue Bird Buses8. Install the trammel bar and measure the distance between the scribe marks

Alignment & Adjustments 48 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesSPRING EYE RE-TORQUEThis procedure to re-torque is necessary when replacing

17730-248 49 Alignment & AdjustmentsAIRTEK®•SOFTEK®for Blue Bird BusesSOFTEK RE-TORQUE PROCEDURE FIGURE 8-231. Chock the wheels.2. Loosen all six

Component Replacement 50 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesSECTION 9Component ReplacementFASTENERSHendrickson recommends that when servicing

17730-248 51 Component ReplacementAIRTEK®•SOFTEK®for Blue Bird BusesASSEMBLY1. Attach the height control valve on the vehicle frame as shown in Figure

L40Airtek / Softek Suspension: Appendix 1Front Axle & Suspensiono p e r a t i o nIn t e r v a l : Mo n t h s /Mi l e swhicheveroccurs firstn o t e

Component Replacement 52 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesFIGURE 9-4 14.6K4. Remove the air lines from the height con-trol valve, see Figure

17730-248 53 Component ReplacementAIRTEK®•SOFTEK®for Blue Bird Buses AIRTEK AIR SPRING – 10KDISASSEMBLY1. Place the vehicle on level floor.2. Choc

Component Replacement 54 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesASSEMBLY1. Insert the air spring into the top pad. Make sure the lock tabs click i

17730-248 55 Component ReplacementAIRTEK®•SOFTEK®for Blue Bird BusesAIRTEK AIR SPRING – 14.6KDISASSEMBLY1. Place the vehicle on level floor.2. Chock t

Component Replacement 56 17730-248AIRTEK®•SOFTEK®for Blue Bird Buses10. Remove the ¾" upper air spring locknut from the air spring bracket.11. Re

17730-248 57 Component ReplacementAIRTEK®•SOFTEK®for Blue Bird BusesAIRTEK FRONT LEAF SPRING FRAME HANGERDISASSEMBLY1. Place the vehicle on level floo

Component Replacement 58 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesPRIOR TO AND DURING DEFLATION AND INFLATION OF THE FRONT AIR SUSPENSION SYSTEM,ENS

17730-248 59 Component ReplacementAIRTEK®•SOFTEK®for Blue Bird Buses4. Remove the frame stands and lower frame.5. Tighten M20 shackle locknut to vehic

Component Replacement 60 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesFIGURE 9-14ASSEMBLY1. Install the shackle bracket on the frame.2. Install new fram

17730-248 61 Component ReplacementAIRTEK®•SOFTEK®for Blue Bird Buses9. Inspect the shackle assembly and both thrust washers (if equipped) for excessiv

SUBJECT: AIRTEK®& SOFTEK®Service Instructions for Blue Bird BusesLIT NO: 17730-248DATE: February 2007 REVISION: CThis publication is also availabl

Component Replacement 62 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesSOFTEK RUBBER AXLE STOPFIGURE 9-17REMOVAL1. Insert a small pry barbetween the r

17730-248 63 Component ReplacementAIRTEK®•SOFTEK®for Blue Bird BusesPRIOR TO AND DURING DEFLATION AND INFLATION OF THE FRONT AIR SUSPENSION SYSTEM,ENS

Component Replacement 64 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesTHE PUSH-TO-CONNECT FITTINGS ARE NON-SERVICEABLE. IT IS NECESSARY TO CLEAN THEDIRT

17730-248 65 Component ReplacementAIRTEK®•SOFTEK®for Blue Bird Buses11. Remove the ¾" clamp group locknuts and discard.DO NOT USE A CUTTING

Component Replacement 66 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesPRIOR TO AND DURING DEFLATION AND INFLATION OF THE FRONT AIR SUSPENSION SYSTEM,ENS

17730-248 67 Component ReplacementAIRTEK®•SOFTEK®for Blue Bird BusesFIGURE 9-21FIGURE 9-227. Raise the axle and the spring and wrap leafassembly into

Component Replacement 68 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesFIGURE 9-2310. Tighten the clamp group locknuts evenly in 50 foot pounds increment

17730-248 69 Component ReplacementAIRTEK®•SOFTEK®for Blue Bird Buses3. Apply a thin coating of anti-seize compound to the shock absorber lower mountin

Component Replacement 70 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesAIRTEK BOTTOM AXLE WRAPDISASSEMBLY1. Place the vehicle on level floor.2. Chock the

17730-248 71 Component ReplacementAIRTEK®•SOFTEK®for Blue Bird Buses3. Install new ¾" clamp group bolts, washers and locknuts. Ensure that the cl

L421APPENDIXSERVICE MANUAL

Component Replacement 72 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesAIRTEK TOP AXLE WRAP (In Chassis)DISASSEMBLY1. Place the vehicle on level floor.2.

17730-248 73 Component ReplacementAIRTEK®•SOFTEK®for Blue Bird BusesFIGURE 9-30ASSEMBLY1. Install the new axle wrap liner on the axle.2. Spray the axl

Component Replacement 74 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesFIGURE 9-32 FIGURE 9-3316. Tighten the ¾" clamp group locknuts evenly to 285

17730-248 75 Component ReplacementAIRTEK®•SOFTEK®for Blue Bird BusesSOFTEK TOP AXLE WRAP (In Chassis)DISASSEMBLY1. Place the vehicle on level floor.2.

Component Replacement 76 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesFIGURE 9-363. Position the axle wrap on the axle, seeFigure 9-36.DO NOT STRIKE THE

17730-248 77 Component ReplacementAIRTEK®•SOFTEK®for Blue Bird BusesAIRTEK FRONT AXLE ASSEMBLYSTEERTEK AXLE CLAMP GROUP CONSIST OF THE FOLLOWING COMPO

Component Replacement 78 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesSOFTEK FRONT AXLE ASSEMBLYSTEERTEK AXLE CLAMP GROUP CONSIST OF THE FOLLOWING COMPO

17730-248 79 Component ReplacementAIRTEK®•SOFTEK®for Blue Bird BusesSTEERTEK AXLE REMOVALRefer to Figures 9-39 and 9-40 when replacing the components

Component Replacement 80 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesSTEERTEK AXLE (Removed from Chassis)AXLE DISASSEMBLY1. Remove the bottom axle wrap

17730-248 81 Component ReplacementAIRTEK®•SOFTEK®for Blue Bird BusesAXLE INSTALLATION1. Place the new axle on the floor jack and position the axle und

Section 1 Introduction . . . . . . . . . . . . . . . . . . . . . . 2Section 2 Product Description . . . . . . . . . . . . . . . . 3Section 3 Important

Component Replacement 82 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesFIGURE 9-458. Install the new ¾" clamp group bolts, washers and locknuts. Snu

17730-248 83 Component ReplacementAIRTEK®•SOFTEK®for Blue Bird Buses17. Install the tie rod end cotter pins.18. Connect the drag link. Install the cas

Component Replacement 84 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesREMOVAL OF THE CAP SCREWS WILL ALLOW THE STEERING KNUCKLE TO SEPARATE FROMTHE AXLE

17730-248 85 Component ReplacementAIRTEK®•SOFTEK®for Blue Bird BusesDO NOT USE HOT SOLUTION TANKS OR WATER AND ALKALINE SOLUTIONS TO CLEAN GROUNDOR PO

Component Replacement 86 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesFIGURE 9-56 FIGURE 9-57KINGPIN BUSHING REMOVAL 1. Remove the retaining ring for th

17730-248 87 Component ReplacementAIRTEK®•SOFTEK®for Blue Bird BusesFIGURE 9-60 FIGURE 9-61STEERING KNUCKLE BORE MEASUREMENTComplete the following ste

Component Replacement 88 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesFIGURE 9-65 FIGURE 9-66 FIGURE 9-67KINGPIN BUSHING REAMINGREAM THE KINGPIN BUSH

17730-248 89 Component ReplacementAIRTEK®•SOFTEK®for Blue Bird Buses4. Slide the reamer out of the bottom of the steering knuckle assembly. If it is n

Component Replacement 90 17730-248AIRTEK®•SOFTEK®for Blue Bird BusesFIGURES 9-72 AND 9-73STEERING KNUCKLE ASSEMBLYASSEMBLYAfter replacement of the kin

17730-248 91 Component ReplacementAIRTEK®•SOFTEK®for Blue Bird BusesSERVICE HINT The easiest way to achieve this is with the grease caps no