Installation And Maintenance Manual 14P Meritor Tire
Installation and Maintenance Manual 14PMeritor Tire Inflation Systems (MTIS)by P.S.I. Standard MTISMTIS with the ThermALERT SystemRevised 06-06
Service NotesAbout This ManualArvinMeritor’s Customer Service CenterThis manual provides installation and maintenance procedures forthe Meritor Tire Inflation Systems by P.S.I. . Use the procedures inthis manual to install the standard tire inflation system and the tireinflation system with ThermALERT on either new trailer axles atoriginal equipment manufacturers or in-service trailer axles at fleets.Call ArvinMeritor’s Customer Service Center at 800-535-5560.Before You Begin1.Read and understand all instructions and procedures beforeyou begin to service components.2.Read and observe all Warning and Caution hazard alertmessages in this publication. They provide information that canhelp prevent serious personal injury, damage to components,or both.3.Follow your company’s maintenance and service, installation,and diagnostics guidelines.4.Use special tools when required to help avoid serious personalinjury and damage to components.Technical Electronic Library DVDThe DriveTrain Plus by ArvinMeritor Technical Electronic LibraryDVD contains product and service information for most Meritor andMeritor WABCO products. Specify TP-9853.How to Obtain Tools and SuppliesSpecified in This ManualCall ArvinMeritor’s Commercial Vehicle Aftermarket at888-725-9355 to obtain Meritor tools and supplies.For Grainger tools, visit their website at www.grainger.com to locatea branch near you.Hazard Alert Messages and TorqueSymbolsWARNINGA Warning alerts you to an instruction or procedure that youmust follow exactly to avoid serious personal injury anddamage to components.CAUTIONA Caution alerts you to an instruction or procedure that youmust follow exactly to avoid damage to components.@This symbol alerts you to tighten fasteners to a specified torquevalue.How to Obtain Additional Maintenanceand Service InformationOn the WebVisit Literature on Demand at meritorhvs.com to access product,service, aftermarket, and warranty literature for ArvinMeritor’s truck,trailer and specialty vehicle components.Information contained in this publication was in effect at the time the publication wasapproved for printing and is subject to change without notice or liability. Meritor HeavyVehicle Systems, LLC, reserves the right to revise the information presented or todiscontinue the production of parts described at any time.Meritor Installation and Maintenance Manual 14P (Revised 06-06)
Contentspg. 12Section 1: Introduction4OverviewThe Standard Meritor Tire Inflation Systems (MTIS) byP.S.I. The MTIS with the ThermALERT SystemIf the MTIS Indicator Light Comes ON When the Air Systemis ChargingIf the MTIS Indicator Light Comes ON During OperationIndicator LightWheel-End AssemblyControlsInstallation and Maintenance Information6Section 2: Assembly and Installation371216182123Installation on Non-Prepped AxlesSequence for Installing a Standard MTIS System and anMTIS System with a ThermALERT SystemAxle Air FittingPrepare a Hollow Spindle Axle to Install the Standard MTISand MTIS with the ThermALERT SystemPrepare a Solid Spindle Axle to Install Standard MTISWithout the ThermALERT SystemStatorWheel-End ComponentsAir ComponentsElectrical ComponentsWheel-End OilStandard MTIS and ThermALERT System Decals25Section 3: Check System Operation272930Check System OperationCheck the Control Box PressureCheck the Hose Connections for LeaksCheck the Wheel End for Air Leaks32Section 4: Pre-Service CheckPre-Service Check34Section 5: Inspection and Maintenance35Tire Inflation System Inspection Interval GuidelinesInspectionIndicator Lightpg. 36Section 6: Maintenance3738InspectionTiresComponent Removal and InstallationTurn the System OFFRemove and Replace the TiresHose Valve CoresRemove the Through-Tee Before Installing a Hubcap39Section 7: TroubleshootingDiagnostics41Section 8: Special ToolsTire Inflation System
1 Introduction1 IntroductionFigure 1.1INDICATOR LIGHTINDICATORLIGHTWHEEL-END ASSEMBLYHOSESTATORTEE VENTThermALERT SYSTEMDECALTUBEPRESS PLUGCONTROLSSELF-DRAININGFLOW SENSINGFILTERSWITCHPRESSUREPROTECTIONVALVE (PPV)SHUT-OFFDRAINVALVE SYSTEM PRESSURE PETCOCKADJUSTMENT KNOBTRAILER AXLESPINDLEHUBCAPTHROUGH-TEEDEFLECTOR SHIELDHOSEAIR SUPPLYLINETRAILERAIR TANKPRESSUREPROTECTION VALVE(PPV)4000406bFigure 1.1Meritor Installation and Maintenance Manual 14P (Revised 06-06)1
1 IntroductionOverviewIf the MTIS Indicator Light Comes ON DuringOperationThe Standard Meritor Tire Inflation Systems(MTIS) by P.S.I. The Meritor Tire Inflation Systems (MTIS) by P.S.I. usecompressed air from the trailer to inflate any tire that falls below thesystem air pressure setting during operation.Air from the existing trailer air supply is routed to a control box, theninto each axle. Refer to Figure 1.1. The axles act as conduits todistribute air through rotary union assemblies at the spindle ends,which then distribute air to each tire as needed. If a tire is leaking,check valves in the tire delivery lines prevent loss of pressure in theremaining tires.The MTIS indicator light on the front of the trailer will come ON toalert you if there is an excessive amount of air flow through thesystem, which can be caused by a leaking tire or a looseconnection, or both. If the indicator light comes ON duringoperation, immediately find a safe place to bring the tractor andtrailer to a complete stop. You must repair components that causedthe air leak before returning the vehicle to service.Standard MTIS does not eliminate the need to perform wheel-endmaintenance at regularly-scheduled intervals.WARNINGIf the ThermALERT system activates during vehicleoperation, you must repair or replace components that causedthe wheel end to overheat before returning the vehicle toservice. You also must install a new thermal screw, which isnot reusable. Otherwise, the indicator light will continue toremain ON during vehicle operation, even though the wheelend has been repaired. If you ignore the indicator light, andanother wheel end overheats during operation, seriouspersonal injury and damage to components can result.The MTIS with the ThermALERT system detects when air isescaping from the axle’s thermal plug and out through the hubcaptee vent, which occurs if a wheel end is operating at an abnormallyhigh temperature. The MTIS indicator light will come ON to alert youthat air flow through the system is excessive.1.Immediately find a safe place to bring the tractor and trailer toa complete stop.2.Inspect the trailer hubs for air leaks.3.Listen for the ThermALERT system’s audible sound at thewheel end. If you hear the sound, the wheel end is overheated.Do not operate the trailer until the wheel-end components arerepaired. If a wheel end overheats during operation, it canseparate from the vehicle. Serious personal injury and damageto components can result.4.If you do not hear the ThermALERT system’s audible soundat the wheel end, inspect the tires for damage. Repairdamaged or leaking tires before returning the vehicle toservice.The MTIS with the ThermALERT SystemThe MTIS with the ThermALERT system detects when air isescaping from the axle’s thermal plug and out through the hubcaptee vent, which occurs if a wheel end is operating at an abnormallyhigh temperature. The MTIS indicator light will come ON to alert youto immediately find a safe place to bring the tractor and trailer to acomplete stop.Air escaping from the tee vent produces an audible noise, whichhelps you to identify the wheel end that is overheated. Do notoperate the trailer until the components are replaced.The MTIS ThermALERT system does not eliminate the need toperform wheel-end maintenance at regularly-scheduled intervals.If the MTIS Indicator Light Comes ON Whenthe Air System is ChargingWhen you start a vehicle, the MTIS indicator light initially may comeON while the air system is charging. However, if the indicator lightstays ON for more than 10 minutes, a tire may be damaged and losingair pressure. Inspect the tires for damage and air leaks. Repairdamaged or leaking tires before returning the vehicle to service.2Meritor Installation and Maintenance Manual 14P (Revised 06-06)Indicator LightAn indicator light mounted on the front of the trailer comes ON whenthe system delivers an excessive amount of air due to a leaking tire,tire inflation system component, or if equipped with aThermALERT system, a wheel end operating at an abnormallyhigh temperature.An MTIS system with a ThermALERT system will also have aThermALERT system decal installed at the indicator light on thetrailer.
1 IntroductionWheel-End AssemblyStator and Through-TeeFigure 1.2STANDARD MTISTHERMALSCREWThe stator is located inside the axle spindle and the through-tee isattached to the hubcap. Pressurized air passes from the stationaryaxle interior to the rotating hub through a tube extending from thethrough-tee into the stator. A dynamic seal, located in thethrough-tee, allows rotation without loss of air pressure.HosesA hose is a flexible valve stem extension which mechanically opensthe tire valve stem and allows air to pass into a tire. A check valvelocated at the knurled end of a hose allows air to flow in only onedirection-towards the tire. This protects each tire from loss of airpressure if the tire inflation system, or any tire, loses air pressureduring operation.MTIS withThermALERT AXLE PLUGAXLE PLUG4006188aFigure 1.2ControlsSelf-Draining FilterThere are two sizes of tire inflation system hoses: short, for 17- and19-inch wheels; and long, for 22.5- and 24.5-inch wheels.The self-draining filter automatically removes liquids andcontaminants from the air system.Tee VentFlow Sensing SwitchThe tee vent ensures that there is no pressure buildup in the wheelend. If the MTIS is equipped with the ThermALERT system, airescaping past this vent will produce an audible sound whichindicates that the wheel end has been operating at an abnormallyhigh temperature.Deflector ShieldThe deflector shield helps prevent any contaminants such as dirtand water from entering the wheel end.HubcapThe hubcap features six vent holes designed to prevent pressurebuildup in the wheel end. Working with the tee vent and thedeflector shield, the wheel-end interior is allowed to vent whilecontaminants are prevented from entering the wheel end. Hubcapsfor oil-lubricated wheel ends typically have a side fill plug for addinglubricant.Press PlugThe press plug is used in axles with hollow spindles to seal off thepressurized axle interior from the wheel end and provide a means ofholding and securing the stator.Refer to Figure 1.2 for a comparison of the standard MTIS axle plugand the ThermALERT system axle plug.WARNINGThe standard MTIS can have a control box with either a blackflow sensing switch or a grey flow sensing switch. Bothcontrol boxes mount to the trailer in the same way. However,MTIS equipped with a ThermALERT system must have acontrol box with a grey flow sensing switch, which is moresensitive to air flow than the black switch.If a ThermALERT system has a control box with a black flowsensing switch, replace it with a control box that has a greyswitch. Otherwise, the indicator light may not come ON if awheel end overheats. Serious personal injury and damage tocomponents can result.The flow sensing switch illuminates the indicator light when thesystem delivers an excessive amount of air to either a leaking tire, aleaking tire inflation system component; or if equipped with theThermALERT system, a wheel end operating at an abnormallyhigh temperature.The control box for the standard MTIS can include a flow sensingswitch that is either black or grey. The control box for the MTIS withthe ThermALERT system must include a grey flow sensingswitch. Both control boxes mount to the trailer in the same way.Meritor Installation and Maintenance Manual 14P (Revised 06-06)3
1 IntroductionDrain PetcockFigure 1.3HOLLOW SPINDLEThe drain petcock is used to manually exhaust pressure from thetire inflation system. This enables you to perform maintenance oneither the trailer axle components or the tire inflation system.WELSHPLUGSystem Pressure Adjustment KnobThe system pressure adjustment knob is used to adjust system airpressure. The system air pressure should be adjusted in accordancewith the tire pressure required.Shut-Off Valve4000407aThe shut-off valve stops air delivery to the system.Figure 1.3Pressure Protection Valve (PPV)The pressure protection valve (PPV) ensures that air is available forother trailer functions. Air will not be delivered to the tire inflationsystem until the trailer air system is charged to at least 80 psi(551 kPa). The PPV also maintains air tank pressure if a tire or a tireinflation system component is damaged.Solid Spindle AxleMost solid spindle trailer axles have a forged spindle welded to theaxle tube. If you’re unsure of the axle type, contact the axlemanufacturer. Figure 1.4.Figure 1.4Installation and Maintenance InformationSOLID SPINDLEUse the procedures in this manual to install the tire inflation systemon either new trailer axles at original equipment manufacturers orin-service axles at fleets.The tire inflation system can be installed onto trailer axlesmanufactured either by Meritor, Holland, Hendrickson, Ingersoll,Dana, Eaton or Sudisa. When installing the system, follow themaintenance instructions provided by these various manufacturers.For trailer axles manufactured by Meritor, refer to MaintenanceManual 14, Trailer Axles. To obtain this publication, refer to theService Notes page on the front inside cover of this manual.Trailer axles may be manufactured with either hollow or solidspindles. Additionally, Meritor provides axle models prepped forinstallation of the standard tire inflation system and theThermALERT system. The system installation sequence isdifferent depending on the axle type. Refer to the information in thefollowing sections.Hollow Spindle AxleMost hollow spindle trailer axles have a spindle that’s integrallyformed out of axle tube material. A welsh plug is pressed into amachined recess in the end of the spindle. If you’re unsure of theaxle type, contact the axle manufacturer. Figure 1.3.4Meritor Installation and Maintenance Manual 14P (Revised 06-06)4000408aFigure 1.4
1 IntroductionPrepped AxleFigure 1.7A trailer axle that has been prepped by Meritor has the followingprovisions. Other axle manufacturers’ prep may vary.TAPPED TOP-CENTER HOLEPLUG앫 Debris has been cleaned from the axle interior.앫 The standard tire inflation system press plug and stator areinstalled into the axle spindle. Figure 1.5.앫 If equipped with the ThermALERT system, the axle press plugwith the thermal screw and stator are installed into the axlespindle. The thermal screw must be installed at the 12 o’clockposition when the axle is sitting in the running position.Figure 1.6.4000409aFigure 1.7앫 The axle top-center hole is tapped to accept the tire inflationsystem axle air fitting, and a plug is installed into this hole. Someaxle manufacturers may select an alternate location for this hole.Figure 1.7.Figure 1.5STANDARD MTISSTATORPRESS PLUG4000410aFigure 1.5Figure 1.6MTIS with ThermALERT THERMALSCREWPRESS PLUGSTATOR4006189aFigure 1.6Meritor Installation and Maintenance Manual 14P (Revised 06-06)5
2 Assembly and InstallationHazard Alert Messages2 Assembly and InstallationFigure 2.1AXLETOP-CENTERRead and observe all Warning and Caution hazard alert messages inthis publication. They provide information that can help preventserious personal injury, damage to components, or both.WARNINGTo prevent serious eye injury, always wear safe eye protectionwhen you perform vehicle maintenance or service.Park the vehicle on a level surface. Block the wheels toprevent the vehicle from moving. Support the vehicle withsafety stands. Do not work under a vehicle supported only byjacks. Jacks can slip and fall over. Serious personal injury anddamage to components can result.4000411aFigure 2.14.Installation on Non-Prepped AxlesSequence for Installing a Standard MTISSystem and an MTIS System with aThermALERT System1.Install the axle air fitting.2.Prepare the axle.3.Install the stator.4.Install the wheel-end components.5.Follow the remaining sections in the manual for the air andelectrical components.Use drilling lubricant and a variable speed electrical drill to drillan 11/32-inch diameter hole STRAIGHT into the top-center ofthe axle. Figure 2.2.Figure 2.2DRILL4000412aFigure 2.2Axle Air Fitting1.Wear safe eye protection.2.Park the vehicle on a level surface. Block the wheels to preventthe vehicle from moving.3.On Meritor axles, locate the top-center of the axle, which is thepreferred location for the axle air fitting. For other axlemanufacturers, this location may vary. If the axle manufacturerhas installed a top-center hole in the axle, use this hole as apilot when you drill for the air fitting. Figure 2.1.5.Use tapping lubricant and a 1/8-inch NPT tap to tap the drilledhole STRAIGHT into the axle. Do not run the tap completelythrough the hole. Leave some thread taper in the tapped hole.Figure 2.3.Figure 2.3TAP4000413aFigure 2.36Meritor Installation and Maintenance Manual 14P (Revised 06-06)
2 Assembly and Installation6.Hand-tighten the axle air fitting into the tapped hole. Then usea 1/2-inch wrench to tighten the fitting 2-1/2 additional turnsto obtain an air tight seal. Continue to tighten until the fittingfaces TOWARD the side of the trailer where you’ll install thesystem control box. Figure 2.4. It is not necessary to apply asealer when the axle air fitting is first installed if currentproduction fittings have sealant pre-applied to the threads. Ifthe part is removed, however, apply a sealer such as Teflon tape to the threads prior to reinstalling. Figure 2.5.Prepare a Hollow Spindle Axle to Install theStandard MTIS and MTIS with theThermALERT SystemCAUTIONCover the wheel ends at both ends of the axle during systeminstallation to prevent contaminants from entering the wheelend. Damage to the bearings and seals can result.1.Wear safe eye protection.2.Park the vehicle on a level surface. Block the wheels to preventthe vehicle from moving.3.Place a container under the hubcap to receive the draining oil.Then, remove the hubcap and hubcap gasket from both endsof the axle. Figure 2.6. Do not reuse either the hubcap gasketor the oil.Figure 2.4AXLEAIRFITTINGAXLEAIR FITTINGFigure 2.64005324aFigure 2.41003654bFigure 2.5Figure 2.6NEW FITTING4.Cover the wheel ends at both ends of the axle with a cleantowel. Figure 2.7.Figure 2.7PRE-APPLIEDSEALANTTEFLON TAPEREINSTALLING FITTING4006111aFigure 2.5TOWEL4000436aFigure 2.7Meritor Installation and Maintenance Manual 14P (Revised 06-06)7
2 Assembly and Installation5.Use a slide hammer fitted with the welsh plug removal spear toremove the spindle welsh plugs from both ends of the axle. Usecare not to score the inside diameter of the spindle bore.Figure 2.8. A slide hammer and welsh plug removal spear areavailable from Meritor to help remove these plugs. Refer toSection 8 for part numbers of special tools and supplies.7.Polish the spindle bore to remove all adhesive residue left fromthe old spindle plug and any metal burrs or sharp edges fromthe spindle bore surface. Figure 2.10.앫 If the axle spindle is equipped with cotter pin holes:Use a round abrasive tool to remove all metal burrs andsharp edges from the spindle bore side of the cotter pinholes. Figure 2.11.Figure e 2.10BORE POLISHING4000419aSLIDEHAMMERSLIDEHAMMERFigure 2.104006112aFigure 2.8Figure 2.11CAUTIONUse a bore polisher to remove all old adhesive from the spindlebore before you apply retaining compound to install the pressplug. Retaining compound must contact a bare metal surfaceor it will not harden. Damage to components can result.6.COTTERPIN HOLEABRASIVETOOLChoose the correct sized bore polisher by matching the axlemanufacturer and model to the bore polishing tools listed inSection 8. Figure 2.9.4000420aFigure 2.9Figure 2.11MANDRELSTRAIGHTDIE GRINDERBOREPOLISHER4000418aFigure 2.98Meritor Installation and Maintenance Manual 14P (Revised 06-06)
2 Assembly and Installation9.CAUTIONUse a cleaning wand and high-volume air to clean debris fromthe axle interior before you install the tire inflation systempress plugs. Check that the axle is clear of debris, includingloose rust, scale, liquid and machining residue. Acontaminated axle can damage the tire inflation system andvoid the warranty.8.Connect a cleaning wand to a high-volume air supply. Refer toSection 8 for information on building a cleaning wand.Figure 2.12. Slowly push the wand through the axle until itexits the opposite end. During this operation, a steady streamof air will be blowing from the axle spindle. Figure 2.13.Check the inside of the axle tube with a flashlight by shiningthe light into one end of the spindle and looking through theopposite end. Confirm that all debris, including loose rust,scale, liquid and machining residue has been removed.Figure 2.14.앫 If necessary: Repeat the cleaning procedure until the axleis clear of debris. For debris that’s difficult to remove, it maybe helpful to push the cleaning wand through the axle fromthe opposite end.Figure 2.14FLASHLIGHTFigure 2.124545 Drill pipecap with3/32" drillpositionedas shown.CLEANINGWANDSPINDLEEND4000695aFigure 2.146 HOLESBuild from 1/2"galvanized pipe.ON-OFF VALVE10. Choose the correct press plug drive adaptor by matching theaxle manufacturer and model to the press plug drive adaptors.Refer to Section 8. Figure 2.15. Current production press plugdrive adaptors are identified with a number stamped on thepart. Some early adaptors were not marked.Overalllength mustexceed theinteriorlength of thetrailer axle.Figure 2.15PRESS PLUG DRIVE ADAPTORS4000489aFigure 2.12Figure 2.13-01-02-03-04CLEANINGWANDDRIVE HANDLE4000423aFigure 2.15CLEANINGWANDAIRSUPPLY4000422bFigure 2.13Meritor Installation and Maintenance Manual 14P (Revised 06-06)9
2 Assembly and Installation11. Install the press plug drive adaptor onto the drive handle.Figure 2.16.Figure 2.18TOWELETTEFigure 2.16PRESS PLUGDRIVE ADAPTOR4000426aDRIVE HANDLEFigure 2.18CAUTION4000424aFigure 2.1612. Clean the exposed O-ring surface and outside diameter surfaceof one press plug using a towelette provided in the installationkit. Use a new towelette for each wheel end. Protect thecleaned plug from additional contaminants. Figure 2.17.Figure 2.17PRESS PLUGOnly use the retaining compound supplied in the installationkit when you install the press plug. Only apply retainingcompound to the OUTSIDE diameter of the press plug. Do notapply it to the inside diameter of the spindle bore, press plugstator threads or axle spindle threads. Damage to componentscan result.14. Put on a new pair of latex gloves. Apply the retainingcompound included in the installation kit evenly to the OUTSIDEdiameter of the press plug. The installation kit contains enoughretaining compound for four wheel ends. Divide the materialequally among the wheel ends. The press plug must beinstalled within 10 minutes of applying the retaining compoundto ensure that the compound hardens correctly. Figure 2.19.Figure 2.19Apply retaining compoundto this surface.TOWELETTE4000425aFigure 2.1713. Use the same towelette to clean one spindle bore ofcontaminants such as grinding dust, dirt and wheel-endlubricant. Protect the cleaned bore from additionalcontaminants. Figure 2.18.PRESSPLUG4000427aFigure 2.1915. If you are installing a press plug fitted with a thermal screw fora ThermALERT system, install the plug with the thermalscrew set at the 12 o’clock ( 15 ) position. Figure 2.20.10Meritor Installation and Maintenance Manual 14P (Revised 06-06)
2 Assembly and Installation17. Check that the press plug protrudes from 1/8-1/4-inch(3.175-6.35 mm) from the end of the spindle. Figure 2.23.Figure 2.2012 O’CLOCKPOSITION( 15 )앫 If the press plug protrudes outside this acceptablerange: Before proceeding, contact ArvinMeritor’s CustomerService Center at 800-535-5560.AXLETHERMALSCREW앫 If the plug is fitted with a thermal screw for aThermALERT system: Ensure that the thermal screw islocated UP at the 12 o’clock ( 15 ) position when the axleis installed under the trailer. Figure 2.20.4006190aFigure 2.23Figure 2.2016. Insert the press plug into the spindle bore until the plug stopsin the bore. Figure 2.21.1/8-1/4"(3.175-6.35 MM)앫 For Holland Propar Axles Only: The press plug slots mustalign with the spindle cotter pin holes. Figure 2.22.PRESSPLUGFigure 2.214000430aPRESSPLUGFigure 2.2318. Insert the press plug drive adaptor into the press plug.Figure 2.24.Figure 2.24PRESS PLUGDRIVEADAPTOR4000428aFigure 2.21Figure 2.22HOLLAND PROPAR AXLESSPINDLECOTTERPIN HOLEPRESSPLUG4000431aSLOTFigure 2.24PRESSPLUG4000429aFigure 2.22Meritor Installation and Maintenance Manual 14P (Revised 06-06)11
2 Assembly and InstallationWARNINGUse a brass or synthetic mallet for assembly and disassemblyprocedures. Do not hit steel parts with a steel hammer. Piecesof a part can break off. Serious personal injury and damage tocomponents can result.CAUTIONThe installed press plug must be seated square to the end of thespindle and inset at or below any chamfer in the axle spindlebore. A press plug that is flush with the end of the spindle is notseated correctly. Damage to components can result.19. Use a four-pound brass or synthetic mallet to drive the pressplug into the spindle bore, until the drive adaptor bottoms outsquarely on the end of the spindle. The drive adaptor sets thepress plug installation depth. There will be a definite change inthe sound and feel of the hammering when the drive adaptorbottoms out. The tire inflation system can be pressurized30 minutes after installation of the press plug. Figure 2.25.Figure 2.25Prepare a Solid Spindle Axle to InstallStandard MTIS Without the ThermALERT SystemImportant Note: The ThermALERT system cannot be installedonto a solid spindle axle.Only use Meritor’s drill jig (part number 81023-00) to drill a hole intoa solid spindle axle to install the tire inflation system. Refer to theService Notes page on the front inside cover of this manual to obtainthe drill jig.1.Wear safe eye protection.CAUTIONUse only Meritor’s solid spindle drill jig (part number81023-00) to drill a hole into a solid spindle axle to install thetire inflation system. Meritor’s drill jig helps to ensure that thehole will be square to the spindle end. Do not drill a hole intothe axle by hand. Do not use a drill jig from anothermanufacturer, or install the drill jig as an assembly. Damage tocomponents can result.BOTTOMS OUT HERE2.DRIVEADAPTORUse a Meritor drill jig. Correctly support the Meritor drill jig withat least two full spindle threads. If necessary, remove the traileraxle outer spindle nut to expose at least two full threads.Figure 2.27.Figure 2.27PRESS PLUG4000432aTWOTHREADSFigure 2.2520. Wipe off all retaining compound residue from the spindle andpress plug drive adaptor. Figure 2.26.OUTERSPINDLENUTFigure 2.264000435aFigure 2.27PRESS PLUGDRIVEADAPTORCAUTIONCover the wheel ends at both ends of the axle during systeminstallation to prevent contaminants from entering the wheelend. Damage to the bearings and seals can result.3.4000433aFigure 2.2612Meritor Installation and Maintenance Manual 14P (Revised 06-06)Cover the wheel ends at both ends of the axle with a cleantowel. Figure 2.28.
2 Assembly and InstallationFigure 2.284.Clean the drill jig spindle installation nut and the axle spindlenut. This will allow the drill jig to be correctly squared to theaxle.5.Install the 12 x 7/16-inch diameter drill bit into the drill.Figure 2.29.TOWEL4000436aFigure 2.28Figure 2.29DRILL JIG — SOLID SPINDLEGUIDE RAILBUSHINGSDRILL MOTOR RAILSDRILL ure 2.29Meritor Installation and Maintenance Manual 14P (Revised 06-06)13
2 Assembly and Installation6.Thread the guide rails onto the axle spindle. Use a bar totighten the rails. Figure 2.30.8.Tighten the feed guide onto the guide rails. Figure 2.33.Figure 2.33Figure 2.30GUIDERAILSBARGUIDERAILSFEEDGUIDE4000437aFigure 2.307.4000440aFigure 2.33Slide the drill motor assembly onto the guide rails. Ensure thatthe drill bit is inserted into the drill bit guide. Figure 2.31 andFigure 2.32.9.Turn the advancing handle CLOCKWISE until the drill bitbottoms out on the spindle. Then, back off the handle one fullturn. Figure 2.34.Figure 2.31Figure 0438aFigure 2.34Figure 2.31Figure 2.32DRILL BITDRILL BITGUIDE4000439aFigure 2.3214Meritor Installation and Maintenance Manual 14P (Revised 06-06)4000441a
2 Assembly and Installation10. Turn the motor ON and drill into the spindle by slowly turningthe advancing handle CLOCKWISE with a smooth, steady feed.Remove the drill bit guide periodically to remove metalshavings. No lubrication is needed during the drilling operation.Check that the guide rails are clean to ensure that the drill willadvance smoothly. Figure 2.34 and Figure 2.35.11. Remove all drill jig components from the spindle. Clean theaxle end. Use shop air to clean the drilled hole. Figure 2.37.Figure 2.37앫 If the drill stalls or lags: Back off the advancing handleCOUNTERCLOCKWISE a few turns while the drill is on, thenresume drilling. Figure 2.36.앫 When the drill bottoms out or breaks through the solidspindle: Turn the advancing handle COUNTERCLOCKWISEa few turns while the drill is on. Release the feed guide andpull the drill out of the hole.앫 If the 12-inch drill bit does not break through: Install the18 x 7/16-inch drill bit. Use the same procedure tocontinue to drill until you break through the solid spindle.TOWELSHOPAIR4000444aFigure 2.37CAUTIONFigure 2.35Always use a tap guide to tap the hole in the axle spindle
2 Meritor Installation and Maintenance Manual 14P (Revised 06-06) Overview The Standard Meritor Tire Inflation Systems (MTIS) by P.S.I. The Meritor Tire Inflation Systems (MTIS) by P.S.I. use compressed air from the trailer to inflate any tire that falls below File Size: 2MBPage Count: 46
5.3. STAFInst Uninstall 6. Platform Installation Notes 6.1. Linux installation 6.2. AIX installation 6.3. HP-UX IA64 64-bit installation 6.4. IBM i 32-bit (previously known as i5/OS or OS/400) installation 6.5. z/OS installation 6.6. FreeBSD installation 6.7. Mac OS X installation 6.8. Solaris installation 7. Environment Variable Settings 7.1.
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