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  <xsd:element id="nav_TaxBenefitAttributableToLowerEffectiveTaxRate" name="TaxBenefitAttributableToLowerEffectiveTaxRate" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_TaxExemptBondMember" name="TaxExemptBondMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_TermLoanFacilityAndSyntheticRevolvingFacilityMember" name="TermLoanFacilityAndSyntheticRevolvingFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_TermLoanMember" name="TermLoanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nav_TermOfFinancingArrangements" name="TermOfFinancingArrangements" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="nav_ThresholdPercentageOfLastReportedSalePriceOfCommonStock" name="ThresholdPercentageOfLastReportedSalePriceOfCommonStock" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_TracFundingFacilityMember" name="TracFundingFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_TradeAndOtherReceivablesMember" name="TradeAndOtherReceivablesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nav_TransfersFromInventoriesToPropertyAndEquipmentForLeasesToOthers" name="TransfersFromInventoriesToPropertyAndEquipmentForLeasesToOthers" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_TreasuryRateMember" name="TreasuryRateMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nav_TreasuryStockAdditionalSharesAcquired" name="TreasuryStockAdditionalSharesAcquired" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_TruckMember" name="TruckMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_UnallocatedInsuranceContractMember" name="UnallocatedInsuranceContractMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_UnfundedPensionPlanMember" name="UnfundedPensionPlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_UnitedStatesDollarsAndMexicanPesosMember" name="UnitedStatesDollarsAndMexicanPesosMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nav_UnrecognizedTaxBenefitsIncreasesDecreasesResultingFromSettlementsWithTaxingAuthorities" name="UnrecognizedTaxBenefitsIncreasesDecreasesResultingFromSettlementsWithTaxingAuthorities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="nav_UnrecognizedTaxBenefitsThatWouldNotImpactEffectiveTaxRate" name="UnrecognizedTaxBenefitsThatWouldNotImpactEffectiveTaxRate" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="nav_UsLargeCapMember" name="UsLargeCapMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_UsSmidCapMember" name="UsSmidCapMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_ValueAddedTaxMember" name="ValueAddedTaxMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_VariableFundingNotesMember" name="VariableFundingNotesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nav_VariableInterestEntityConsolidatedCarryingAmountCashAndCashEquivalents" name="VariableInterestEntityConsolidatedCarryingAmountCashAndCashEquivalents" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="nav_VariableInterestEntityPrimaryBeneficiaryBlueDiamondPartsAndBlueDiamondTruckMember" name="VariableInterestEntityPrimaryBeneficiaryBlueDiamondPartsAndBlueDiamondTruckMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_VariableInterestEntityPrimaryBeneficiarySecuritizationsTreatedAsBorrowingsMember" name="VariableInterestEntityPrimaryBeneficiarySecuritizationsTreatedAsBorrowingsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_VariableInterestEntityPrimaryBeneficiaryTransactionDoesNotQualifyForSaleAccountingMember" name="VariableInterestEntityPrimaryBeneficiaryTransactionDoesNotQualifyForSaleAccountingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_VariableRateAxis" name="VariableRateAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_VariableRateDomain" name="VariableRateDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nav_VatTaxAdjustment" name="VatTaxAdjustment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_VfnFacilityMember" name="VfnFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_VoluntarySeparationProgramMember" name="VoluntarySeparationProgramMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_WarrantyAxis" name="WarrantyAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_WarrantyContractsSoldInCurrentYearMember" name="WarrantyContractsSoldInCurrentYearMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_WarrantyDomain" name="WarrantyDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_WarrenvilleMember" name="WarrenvilleMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_WholesalePortfolioMember" name="WholesalePortfolioMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_WorldHeadquartersSiteInLisleIllinoisMember" name="WorldHeadquartersSiteInLisleIllinoisMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
</xsd:schema>
</XBRL>