EXHIBIT 4.3


                      FOURTH AMENDMENT TO CREDIT AGREEMENT


        THIS FOURTH AMENDMENT TO CREDIT AGREEMENT is made as of June 7, 1994
   among the undersigned financial institutions (individually a "Bank" and
   collectively the "Banks"), FIRSTAR BANK MILWAUKEE, NATIONAL ASSOCIATION
   (formerly known as First Wisconsin National Bank of Milwaukee), as agent
   for the Banks (the "Agent"), and OSHKOSH TRUCK CORPORATION (the
   "Company").

                                    RECITALS

        The Company, the Banks and the Agent entered into a Credit Agreement
   dated as of March 31, 1992, as amended by a First Amendment to Credit
   Agreement dated as of March 12, 1993, a Second Amendment to Credit
   Agreement dated as of July 7, 1993 and a Third Amendment to Credit
   Agreement dated as of October 15, 1993 (collectively, the "Credit
   Agreement").  The Company, the Banks and the Agent desire to amend the
   Credit Agreement as provided below.

                                   AGREEMENTS

        In consideration of the Recitals and the agreements contained herein
   and in the Credit Agreement as amended hereby, the Company, the Banks and
   the Agent agree as follows:

        1.  Definitions and References.  Capitalized terms used herein shall
   have the meanings set forth in the Credit Agreement.  All references to
   the Credit Agreement contained herein or in the Credit Agreement shall
   mean the Credit Agreement as amended by this Amendment.

        2.  Amendment.  The Credit Agreement is hereby amended as follows:

        (a)  The following definitions are hereby added to Section 1 of the
   Credit Agreement:

             "Basic Documents" means two or more, including all, of the
   Cherokee Co. Industrial Revenue Bonds, the Indenture, the Loan Agreement,
   and the Pledge and Security Agreement, all as defined in the Indenture and
   all as the same may be amended, modified, supplemented or restated from
   time to time, and "Basic Document" shall mean any one of the foregoing.

             "Cherokee Co. IRB Default" means such term as defined in Section
   7.1(1).

             "Cherokee Co. Industrial Revenue Bonds" means those Cherokee
   County, South Carolina Variable/Fixed Rate Demand Industrial Revenue
   Bonds, Series 1989 (Oshkosh Truck Corporation Project) in the original
   aggregate principal amount of $9,300,000.

             "Cherokee Co. IRB Letter of Credit" shall mean that irrevocable
   letter of credit issued pursuant to the terms of this Agreement in support
   of the Cherokee Co. Industrial Revenue Bonds, as amended, modified,
   extended, renewed or replaced from time to time.

             "Indenture" means Indenture of Trust dated as of August 1, 1989
   between Cherokee County, South Carolina and Citizens and Southern Trust
   Company (Georgia), National Association (now known as NationsBank of
   Georgia, N.A.) pursuant to which the Cherokee Co. Industrial Revenue Bonds
   were issued.

             "NationsBank" means NationsBank of North Carolina, N.A., as a
   Bank under this Agreement, and as initial Issuing Bank of the Cherokee Co.
   IRB Letter of Credit hereunder.

             "Special Bank Event" means the delivery by the Agent or the
   Issuing Bank for the Cherokee Co. IRB Letter of Credit to the Company and
   the Trustee of an opinion of counsel (selected by the Agent and reasonably
   acceptable to the Company) recognized to have expertise in banking or
   securities law matters to the effect that, on the basis of a change after
   the date of issuance of the Cherokee Co. IRB Letter of Credit in the laws,
   rules or regulations applicable to the Agent or the Banks or in the
   interpretation of such laws, rules or regulations by any governmental
   authority having jurisdiction over the Agent and the Banks or of a ruling
   after the date of issuance of the Cherokee Co. IRB Letter of Credit by a
   court of competent jurisdiction or other governmental authority, the
   maintenance of the Cherokee Co. IRB Letter of Credit by the Issuing Bank
   thereof, the execution of the Pledge and Security Agreement in favor of
   the Issuing Bank of the Cherokee Co. IRB Letter of Credit, the acceptance
   by the Issuing Bank of the collateral thereunder or any other transaction
   contemplated by this Agreement is, or will be, a violation of the laws,
   rules and regulations applicable to the Issuing Bank, or requires or will
   require the Issuing Bank to register as a securities dealer (or in any
   similar capacity) if not otherwise so registered.

             "Trustee" means NationsBank of Georgia, N.A. formerly known as
   Citizens and Southern Trust Company) as trustee under the indenture and
   any successor trustee under the Indenture.

        (b)  The definition of "Issuing Bank" in Section 1 of the Credit
   Agreement is hereby amended to read in its entirety as follows:

             "Issuing Bank" means, (a) Bank appointed by the Company, which
   shall be one of the Banks and which shall have accepted such appointment,
   which issues or will issue a Letter of Credit, and (b) for the initial
   Cherokee Co. IRB Letter of Credit, NationsBank.

        (c)  The definition of "Letter of Credit" in Section 1 of the Credit
   Agreement is hereby amended to read in its entirety as follows:

             "Letter of Credit" means a letter of credit issued by the
   Issuing Bank at the request of the Company pursuant to Section 2.10 and
   "Letters of Credit" means all such letters of credit; including without
   limitation the Cherokee Co. IRB Letter of Credit.

        (d)  The definition of "Letter of Credit Commitment" in Section 1 of
   the Credit Agreement is hereby amended to read in its entirety as follows:

             "Letter of Credit Commitment" means, as to each Bank, such
   Bank's Percentage of the aggregate amount of the Letter of Credit
   Commitments.  The aggregate amount of the Letter of Credit Commitments is
   initially $15,000,000 and is subject to reduction from time to time
   pursuant to section 2.5.  The aggregate Letter of Credit Commitments may
   at the request of the Company by notice to the Agent by increased to an
   amount in excess of $15,000,000 in integral multiples of $1,000,000;
   provided, however, that (a) the amount by which the aggregate Letter of
   Credit Commitments exceeds $15,000,000 shall reduce the Banks' aggregate
   Revolving Loan Commitments and (b) the amount by which the aggregate
   letter of Credit Commitments exceeds $15,000,000, plus the aggregate
   outstanding balances of the Notes may not exceed $70,000,000.  Each Bank's
   Revolving Loan Commitment shall be reduced by an amount equal to such
   Bank's Percentage of the amount by which the aggregate Letter of Credit
   Commitments exceeds $15,000,000.

        (e)  The definition of "Maturity Date" in Section 1 of the Credit
   Agreement is hereby amended to read in its entirety as follows:

             "Maturity Date" means march 17, 1997 or such earlier date on
   which (a) the Agent declares the Notes to be immediately due and payable
   pursuant to Section 7.2 of this Agreement, or (b) the Company permanently
   reduces the Revolving Loan Commitments to zero pursuant to section 2.5(a)
   of this Agreement.

        (f)  The definition of "Permitted Lien" in Section 1 of the Credit
   Agreement is amended by deleting "and" at the end of subsection (g),
   adding "and" at the end of subsection (h) and adding a new subsection (i)
   as follows:

             (i)  liens created under the Custody, Pledge and Security
   Agreement dated as of August 1, 1989, as amended, modified or supplemented
   from time to time.

        (g)  The definition of "Revolving Loan Commitment" in Section 1 of
   the Credit Agreement is hereby amended to read in its entirety as follows:

             "Revolving Loan Commitment" means, as to a Bank, the obligation
   of such Bank to make its pro rata share of Revolving Loans to the Company. 
   The aggregate amount of the Revolving Loan Commitments is $70,000,000,
   less the amount by which the aggregate Letter of Credit Commitments
   exceeds $15,000,000 and is subject to reduction from time to time pursuant
   to Section 2.5.  The Revolving Loan Commitment of each Bank is such Bank's
   Percentage of the aggregate of the Revolving Loan Commitments.

        (h)  A new Section 2.4(3) is hereby added to the Credit Agreement as
   follows:

             (e)  Facility Fees.  The Company agrees to pay to the Agent, for
   the ratable account of the Banks, on the last Business Day of each fiscal
   quarter of the Company commencing with the quarter ending March 31, 1994,
   and on the Maturity Date, a facility fee equal to one-half of 1% of the
   daily average amount of the outstanding loans, advances or extensions of
   credit to Mexicana de Chasises S.A. de C.V. (as provided in Section 6.7(m)
   during the preceding quarter or other applicable period.  Facility fees
   shall be calculated for the actual number of days elapsed on the basis of
   a 360-day year.


        (i)  A new Section 2.4(f) is hereby added to the Credit Agreement as
   follows:


             (f)  Issuing Bank Fees.  The company agrees to pay to the
   Issuing Banks, for their own account, in connection with the issuance and
   maintenance of the Letters of Credit hereunder, such fees as may be agreed
   upon by the Company and Issuing Bank whether by way of letter agreement or
   otherwise.

        (j)  The first sentence of Section 2.10(a) of the Credit Agreement is
   hereby amended to read in its entirety as follows:

             The Issuing Bank will issue Letters of Credit which it may
   lawfully issue, in Dollars, for the account of the Company, subject to the
   terms and conditions hereof, at any time during the period from the
   Closing Date to the Maturity Date; provided that the amount available for
   drawing under all Letters of Credit, plus the Letter of Credit Exposure as
   of the applicable Borrowing Date, shall not exceed the aggregate Letter of
   Credit Commitments and, provided further, that no Letter of Credit shall
   have an initial expiry date later than the Maturity Date, except that (i)
   the Cherokee Co. IRB Letter of Credit and (ii) Letters of Credit in an
   aggregate face amount not exceeding $2,500,000 at any time outstanding,
   may have an initial expiry date not later than 12 months after the
   Maturity Date.

        (k)  The first sentence of Section 2.10(e) of the Credit Agreement is
   hereby amended to read in its entirety as follows:

             If on the Maturity Date any Letter of Credit (including the
   Cherokee Co. IRB Letter of Credit) remains outstanding, the Company shall
   either make arrangements satisfactory to the Required Banks for the
   assumption of liabilities created by any such issued and unexpired Letter
   of Credit or, in the absence of such satisfactory arrangements, the
   Company shall deliver to the Agent, for the benefit of the Banks, Cash
   Collateral in an aggregate principal amount equal to 110% of the Letter of
   Credit Exposure.

        (l)  A new Section 2.10(f) is hereby added to the Credit Agreement as
   follows:

             (f)  Cherokee Co. IRB Letter of Credit.  The Cherokee Co. IRB
   Letter of Credit will be issued for an initial term of one year and may be
   renewed or extended (upon the written request of the Company) at the
   option of the Required Banks for a period ending not later than 12 months
   after the Maturity Date.

        (m)  A new Section 5.19 is hereby added to the Credit Agreement as
   follows:

             5.19  Special Bank Event.  Within 90 days after the occurrence
   of a Special Bank Event, (i) replace the Cherokee Co. IRB Letter of Credit
   with the letter of credit of an issuer who is not subject to a Special
   Bank Event as a result of issuing the Cherokee Co. IRB Letter of Credit,
   (ii) cause the redemption of all of the Cherokee Co. Industrial Revenue
   Bonds in accordance with the terms of the indenture, or (iii) cause the
   Letter of Credit to be surrendered for cancellation.

        (n)  Section 6.1 of the Credit Agreement is hereby amended in its
   entirety to read as follows:

             Restricted Payments.  Make any Restricted Payments, provided
   that so long as no Default or Event of Default exists, the Company may
   make (a) the Restricted Payments of Dividends paid by the Company on
   November 15, 1993, and (b) Restricted Payments in an additional amount not
   exceeding, in the aggregate during the term of this Agreement, $4,000,000
   plus 40% of Net Income (or, if Net Income is a negative number, then
   reduced by 100% of such negative Net Income) for the period commencing
   September 26, 1993 to the end of the fiscal quarter immediately preceding
   the making of such Restricted Payment.

        (o)  Section 6.7 of the Credit Agreement is amended by deleting "and"
   at the end of the subsection 91) and by replacing subsection 6.7(m) with
   the following:

             (m)  loans, advances or extensions of credit (including accounts
   receivable) to Chasises y Autopartes OSHMEX S.A. de C.V., a Mexico
   corporation, not to exceed an aggregate amount of $10,000,000 from the
   date hereof through March 17, 1995 or $0 at any time after March 17, 1995;
   (n) new investments by the Company in Midwest O.P. Holdings, Corp. during
   fiscal years 1994 and 1995 not to exceed $400,000 in excess of the amount
   permitted under Section 6.7(l) above; and (0) new strategic investments of
   the Company in other business entities, not to exceed an aggregate amount
   of $1,000,000 in each fiscal year.

        (p)  Section 6.9(a)(i), Sale of Receivables, of the Credit Agreement
   is amended by deleting "$10,000,000" and inserting "$20,000,000" in its
   place.

        (q)  A new Section 6.21 is hereby added to the Credit Agreement as
   follows:

             6.21  Cherokee Co. Industrial Revenue Bonds.  Enter into or
   consent to any amendment of any of the Basic Documents without the prior
   written consent of the Issuing Bank for the Cherokee Co. IRB Letter of
   Credit and the Majority Banks.  The Company will not, and will not permit
   any Affiliate to have any Cherokee Co. Industrial Revenue Bond (including
   the principal amount thereof and interest accrued thereon) legally or
   beneficially owned by any of them to be purchased, or redeemed or
   otherwise paid, directly or indirectly, by any drawing on the Cherokee Co.
   IRB Letter of Credit, and the Company agrees not to cause any optional
   redemption of the Cherokee Co. Industrial Revenue Bonds pursuant to
   Sections 2.06(a) or 2.07(a)(ii) of the Indenture, unless (i) the Majority
   Banks shall have given their prior written consent, or (ii) the Company
   shall provide cash collateral in advance of the draw in an amount at least
   as great as the amount of the draw.

        (r)  A new subsection (1) is hereby added to Section 7.1 of the
   Credit Agreement as follows:

             (1)  Event of Default Under Basic Documents.  The Company shall
   default in the due performance or observance of any other term, covenant
   or agreement contained in any of the other Basic Documents (subject to
   applicable grace or cure periods, if any, sometimes herein referred to as
   a "Cherokee Co. IRB Default").

        (s)  A new subsection (c) is hereby added to Section 7.2 of the
   Credit Agreement as follows:


             (c)  The Issuing Bank may, at the request and direction of the
   Majority Banks, notify the Trustee of the occurrence of an Event of
   Default hereunder and thereby require the Trustee to declare the principal
   amount of the Cherokee Co. Industrial Revenue Bonds and interest accrued
   thereon to be due and payable immediately, all in accordance with the
   terms of the Indenture, and, upon said declaration, such principal and
   interest shall become and be immediately due and payable.  In addition the
   Issuing Bank, at the request and direction of the Majority Banks, may
   exercise any other rights and remedies available under any Basic Document,
   any other agreement or at law or in equity.  If the Event of Default is
   the failure by the Company to reimburse the Issuing Bank on a timely basis
   for an "Interest Drawing" (as defined in the Cherokee Co. IRB Letter of
   Credit), the Issuing Bank may, no later than the tenth Business Day
   following such drawing, deliver to the Trustee notice that the Cherokee
   Co. IRB Letter of Credit will not be reinstated.

        3.  Effectiveness of the Amendment.  This Amendment shall become
   effective when counterparts hereof executed on behalf of the Company, the
   Agent and the Required Lenders shall have been received by the Agent and
   notice thereof shall have been given by the Agent to the Company and each
   Bank.

        4.  Representations and Warranties.  The Company certifies that (a)
   the representations and warranties contained in the Credit Agreement are
   true and correct as of the date of the Amendment except (1) that the
   representations and warranties contained in section 3.3 shall apply to the
   most recent financial statements delivered pursuant to sections 5.1 and
   5.2 and (ii) for changes permitted by the Credit Agreement, (b) no
   condition exists nor has any event or act occurred which, with or without
   the giving of notice or the passage of time, would constitute an Event of
   Default under the Credit Agreement, and (c) this Amendment has been duly
   authorized, executed and delivered on its behalf, and that the Credit
   Agreement, as amended hereby, constitutes a legal, valid and binding
   obligation of the Company enforceable in accordance with its terms.

        5.  Expenses and Fees.  As consideration for the amendment contained
   herein, the Company will pay to the Agent, for the account of the Banks,
   upon execution hereof, a fee equal to $20,000.  The Company shall
   reimburse the Agent and the Banks (including NationsBank) for all
   reasonable legal fees and expenses incurred by the Agent and the Banks
   (including NationsBank) in connection with the preparation, negotiation
   and execution of this Amendment and the issuance of the Cherokee Co. IRB
   Letter of Credit.

        6.  Full Force and Effect.  Except as amended hereby the Credit
   Agreement shall remain in full force and effect.  The Credit Agreement, as
   amended hereby, and all rights and powers created thereby and thereunder
   and under the Notes are in all respects ratified and confirmed except that
   the Notes are hereby amended as required by the amendment to the Credit
   Agreement herein.  The Company covenants and agrees that each of the Notes
   shall remain in full force and effect and shall continue to secure the
   debts, obligations and liabilities of the Company to the Bank for due
   payment of all principal, interest and other charges due the Bank by the
   Company under the Credit Agreement, as amended hereby, and any extensions,
   modifications or refinancing thereof.

        IN WITNESS WHEREOF, the parties hereto have caused this Amendment to
   be duly executed the day and year first written above.

                                             FIRSTAR BANK MILWAUKEE,
                                              N.A. (formerly known as First
                                              Wisconsin national Bank of
                                              Milwaukee), as Agent and a
   OSHKOSH TRUCK CORPORATION                  Bank

   BY  FRED SCHULTE                          BY  /s/
     Its Vice President                        Its  Assistant Vice President

   BANK ONE, MILWAUKEE NATIONAL              NATIONSBANK OF NORTH CAROLINA,
     ASSOCIATION                              N.A.

   BY  /s/                                   BY  /s/
     Its Vice President                        Its Vice President

   THE NORTHERN TRUST COMPANY                HARRIS TRUST AND SAVINGS BANK

   BY  /s/                                   BY  /s/
     Its Vice President                        Its Vice President


   PNC BANK, NATIONAL ASSOCIATION
   (formerly known as Pittsburgh
   National Bank)

   BY  /s/ 
      Its Commercial Banking Officer