TEREX CORPORATION

                                  $250,000,000

                      13 1/4% Senior Secured Notes due 2002

                              Series A and Series B

                        ---------------------------------

                          FIFTH SUPPLEMENTAL INDENTURE

                          Dated as of February 18, 1998

                        --------------------------------

                    UNITED STATES TRUST COMPANY OF NEW YORK,

                                     Trustee




                                       1



                          FIFTH SUPPLEMENTAL INDENTURE


          FIFTH SUPPLEMENTAL  INDENTURE,  dated as of February 18, 1998, between
TEREX  CORPORATION,  a Delaware  corporation (the "Company"),  and UNITED STATES
TRUST COMPANY OF NEW YORK, a New York corporation, as trustee (the "Trustee").

          WHEREAS,  the  Company,  and CMH  Acquisition  Corp.,  Clark  Material
Handling Company, CMH Acquisition  International  Corp.,  Koehring Cranes, Inc.,
Legris  Industries,  Inc., PPM Cranes,  Inc., as guarantors  (collectively,  the
"Original Guarantors") and the Trustee are parties to an Indenture,  dated as of
May 9, 1995 (said Indenture, as it may heretofore or hereafter from time to time
be amended, the "Indenture") providing for the issuance of the Company's 13 1/4%
Series A Senior Secured Notes due 2002 and the Company's 13-1/4% Series B Senior
Secured Notes due 2002 (collectively, the "Notes");

          WHEREAS, the Company and the Trustee entered into a First Supplemental
Indenture,  dated as of April 7, 1997,  pursuant to which  Terex-Telelect  Inc.,
Terex Aerial Inc., Terex Atlantico Inc., Terex-Ro Corporation,  Terex West Coast
Inc., and Terex Aviation  Ground  Equipment Inc.  became  additional  guarantors
under the Indenture (the "Additional Guarantors");

          WHEREAS,   the  Company  and  the  Trustee   entered   into  a  Second
Supplemental  Indenture,  dated as of April 14,  1997,  pursuant  to which Terex
Baraga  Products,  Inc.  and M & M  Enterprises  of Baraga,  Inc.  (the  "Baraga
Guarantors") became additional guarantors under the Indenture;

          WHEREAS, the Company and the Trustee entered into a Third Supplemental
Indenture,  dated as of December 9, 1997,  pursuant to which Terex Cranes,  Inc.
(formerly known as Terex/PPM Cranes  Holdings,  Inc.) ("Terex Cranes") became an
additional guarantor under the Indenture;

          WHEREAS,   the  Company  and  the  Trustee   entered   into  a  Fourth
Supplemental Indenture, dated as of January 5, 1998, pursuant to which Payhauler
Corp. and Progressive  Components,  Inc. became additional  guarantors under the
Indenture (together with the Original Guarantors, the Additional Guarantors, the
Baraga Guarantors and Terex Cranes, the "Guarantors"); and

          WHEREAS, holders of at least a majority of the principal amount of the
Notes  outstanding  have  consented  in  writing to  certain  amendments  to the
Indenture pursuant to Section 9.2 thereof,  and the Company,  the Guarantors and
the Trustee desire to make such amendments to the Indenture.

          NOW, THEREFORE,  the Company,  the Guarantors and the Trustee agree as
follows for the equal and ratable benefit of the Holders of the Notes.


                                       2


                                    ARTICLE 1

                           AMENDMENT TO THE INDENTURE

         Section 1.01. Article 1 of the Indenture is hereby amended as follows:

          (a) The  following  definitions  are hereby  deleted:  Acquired  Debt,
Acquisition,  Acquisition Agreement,  Capital Lease Obligation, Cash Equivalent,
Consolidated  EBITDA,  Consolidated  Interest Expense,  Consolidated Net Income,
Consolidated  Net Worth,  Eligible  Inventory,  Eligible  Receivables,  Existing
Credit Facility,  Floor Plan Guaranty,  Interest Coverage Ratio, Net Assets, Net
Income,  Permitted  Investments,   Permitted  Proceeds,  PPM  Funded  Debt,  PPM
Subordinated Note, Restricted Investment, Revolving Credit Facility and Weighted
Average Life to Maturity.

          (b) The  definition  of  "Permitted  Liens" is hereby  amended  by (i)
inserting  on the  third to last  line  thereof  after  the  words  "leases  and
subleases," a new clause (xii) which shall read as follows:  "(xii) Liens junior
to the Liens granted by the Company or any of its  Subsidiaries  on any of their
respective  properties,  assets or revenues pursuant to the Security Documents,"
(ii)  renumbering  current  clause (xii) as clause (xiii) and (iii) changing the
number "(xi)" on the last line thereof to the number "(xii)."

          (c) The definition of "Purchase  Money Liens" is hereby amended in its
entirety to read as follows:

                           "Purchase  Money  Liens" means (i) Liens to secure or
                  securing  Purchase Money  Obligations and (ii) Liens to secure
                  Indebtedness  issued in exchange for, or the proceeds of which
                  are  contemporaneously  used  to  extend,  refinance,   renew,
                  replace, or refund outstanding  Indebtedness of the Company or
                  any  of  its  Restricted   Subsidiaries   incurred  solely  to
                  refinance  Purchase  Money  Obligations   provided  that  such
                  refinancing  indebtedness  is  incurred no later than 180 days
                  after the satisfaction of such Purchase Money Obligations.

          (d) Section 1.2 is hereby  amended by (i) deleting the  references  to
"Affiliate  Transaction,"  "Excess  Proceeds,"  "Purchase  Money  Indebtedness,"
"Refinance,"  "Refinance   Indebtedness"  and  "Restricted  Payments"  and  (ii)
changing the  references to "Excess  Proceeds  Offer,"  "Excess  Proceeds  Offer
Period"  and  "Excess  Proceeds  Payment  Date" to "Net  Proceeds  Offer,"  "Net
Proceeds Offer Period" and "Net Proceeds Payment Date," respectively.

          Section  1.02.  Articles  4, 5, 6 and 8 of the  Indenture  are  hereby
amended as follows:


          (a) Sections 4.7, 4.8, 4.9, 4.11,  4.15 and 4.16 are hereby deleted in
their entirety.

          (b) Section 4.10 is hereby amended in its entirety to read as follows:

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          Section 4.10. Purchase of Notes Following Asset Sales.

                              If the Company or any  Restricted  Subsidiary  (i)
                    elects  to  make an  Asset  Sale  on  such  terms  as it may
                    determine in its sole  discretion and (ii) further elects to
                    offer  to  purchase  the  Notes  with  any or all of the Net
                    Proceeds of such Asset Sale (the "Net Proceeds Offer"),  the
                    Company  shall offer to purchase  Notes  having an aggregate
                    principal  amount  equal to the Net  Proceeds  of such Asset
                    Sale that the  Company  elects to apply to the  purchase  of
                    Notes (the "Purchase Amount"),  at a purchase price equal to
                    100% of the aggregate principal amount thereof, plus accrued
                    and unpaid interest, if any, to the purchase date.

                              The Net  Proceeds  Offer  shall  remain open for a
                    period of 20  Business  Days and no longer,  unless a longer
                    period is required by law (the "Net Proceeds Offer Period").
                    Promptly  after the  termination  of the Net Proceeds  Offer
                    Period (the "Net Proceeds Payment Date"),  the Company shall
                    purchase and mail or deliver payment for the Purchase Amount
                    for the Notes or portions thereof  tendered,  pro rata or by
                    such other  method as may be  required  by law,  or, if less
                    than the  Purchase  Amount  has  been  tendered,  all  Notes
                    tendered  pursuant to the Net Proceeds Offer.  The principal
                    amount of Notes to be  purchased  pursuant to a Net Proceeds
                    Offer  may be  reduced  by the  principal  amount  of  Notes
                    acquired  by the  Company  through  purchase  or  redemption
                    (other  than   pursuant  to  a  Change  of  Control   Offer)
                    subsequent to the date of an Asset Sale and  surrendered  to
                    the Trustee for cancellation.

                              The Net  Proceeds  Offer  shall  be  conducted  in
                    compliance  with all  applicable  laws,  including  (without
                    limitation),  Regulation  14E of the  Exchange  Act  and the
                    rules thereunder and all other applicable  Federal and state
                    securities laws.

                              The Company shall  commence the Net Proceeds Offer
                    by mailing to the Trustee and each Holder,  at such Holder's
                    last registered  address,  a notice,  which shall govern the
                    terms of the Net Proceeds Offer, and shall state:

                              (1) that  the Net  Proceeds  Offer  is being  made
                    pursuant to this Section 4.10, the principal amount of Notes
                    which  shall be  accepted  for  payment  and that all  Notes
                    validly tendered shall be accepted for payment on a pro rata
                    basis;

                              (2) the purchase price and the date of purchase;

                              (3) that any Notes not  tendered or  accepted  for
                    payment pursuant to the Net Proceeds Offer shall continue to
                    accrue interest;

                              (4)  that,  unless  the  Company  defaults  in the
                    payment  of the  purchase  price  with  respect to any Notes
                    tendered,  Notes  accepted  for payment  pursuant to the Net
                    Proceeds Offer shall cease to accrue  interest after the Net
                    Proceeds Payment Date;

                              (5) that Holders  electing to have Notes purchased
                    pursuant  to a Net  Proceeds  Offer  shall  be  required  to
                    surrender  their Notes,  with the form  entitled  "Option of
                    Holder  to  Elect  Purchase"  on the  reverse  of  the  Note
                    completed,  to the Company prior to the close of business on
                    the  third  Business  Day  immediately   preceding  the  Net
                    Proceeds Payment Date;


                                       4


                              (6) that  Holders  shall be  entitled  to withdraw
                    their election if the Company  receives,  not later than the
                    close of business on the second  Business Day  preceding the
                    Net  Proceeds  Payment  Date, a telegram,  telex,  facsimile
                    transmission or letter setting forth the name of the Holder,
                    the  principal  amount of Notes  the  Holder  delivered  for
                    purchase and a statement that such Holder is withdrawing his
                    election to have such Notes purchased;

                              (7) that Holders whose Notes are purchased only in
                    part  shall be issued  Notes  representing  the  unpurchased
                    portion of the Notes  surrendered;  provided  that each Note
                    purchased  and each new Note  issued  shall be in  principal
                    amount of $1,000 or whole multiples thereof; and

                              (8) the  instructions  that Holders must follow in
                    order to tender their Notes.

          On or before the Net  Proceeds  Payment  Date,  the Company  shall (i)
accept for  payment on a pro rata basis the Notes or portions  thereof  tendered
pursuant to the Net  Proceeds  Offer,  (ii)  deposit with the Paying Agent money
sufficient  to pay the  purchase  price of all  Notes  or  portions  thereof  so
accepted and (iii)  deliver to the Trustee the Notes so accepted,  together with
an Officer's  Certificate stating that the Notes or portions thereof tendered to
the Company are accepted for payment.  The Paying Agent shall  promptly  mail to
each  Holder of Notes so  accepted  payment in an amount  equal to the  purchase
price of such Notes,  and the Trustee shall  promptly  authenticate  and mail to
such Holders new Notes equal in principal  amount to any unpurchased  portion of
the Note surrendered.

          The Company shall make a public announcement of the results of the Net
Proceeds Offer as soon as practicable  after the Net Proceeds  Payment Date. For
the purposes of this Section 4.10, the Trustee shall act as the Paying Agent.

          (c) Section 4.12 is hereby amended in its entirety to read as follows:

          Section 4.12. Limitation on Liens.

                    (a)  The  Company  shall  not,  and  shall  not  permit  any
          Restricted  Subsidiary  to,  directly or  indirectly,  create,  incur,
          assume  or suffer  to exist  any Lien on any  asset  (real,  personal,
          tangible or  intangible)  now owned or hereafter  acquired,  or on any
          income or profits therefrom,  or assign or convey any right to receive
          income  therefrom,  except (i) Liens on Accounts and Inventory and the
          proceeds thereof (and contract rights and general intangibles relating
          thereto  and  any  other   Mutual   Collateral   (as  defined  in  the
          Intercreditor  Agreement)),   (ii)  Purchase  Money  Liens  and  (iii)
          Permitted Liens.

                    (b)  Anything  in the  Security  Documents  to the  contrary
          notwithstanding,  the Company and its  Subsidiaries may grant Liens in
          accordance with this Section 4.12;  provided,  that no such Lien shall
          affect  the  attachment,  perfection  or  priority  of the Lien of the
          Security  Documents.  Subject  to the  foregoing,  upon  receipt  of a
          written  notice from the Company or a pledging  Subsidiary  or another


                                       5


          secured  party  stating  that  Collateral  is  subject  to a  security
          interest  under a security  agreement  executed by the  pledgor  which
          contains a  description  of the  security,  the Trustee  shall execute
          appropriate instruments  acknowledging that such Collateral is subject
          to such other security interest.

          (d) Section 4.17 is hereby  amended by deleting the  following  clause
which  begins  at the  end of the  twenty-first  line  thereof  and  ends on the
twenty-fourth line thereof: "and such Person shall be permitted by virtue of its
Fixed Charge  Coverage Ratio to incur,  immediately  after giving effect to such
acquisition,  at least  $1.00 of  additional  Indebtedness  pursuant  to Section
4.9(a) of this Indenture."

          (e) Section 5.1 of the  Indenture is hereby  amended by (i) adding the
word "and" after Section 5.1(ii), (ii) replacing the comma and the word "and" at
the end of Section 5.1(iii) with a period, (iii) deleting Section 5.1(iv) in its
entirety  and (iv)  inserting  a new  paragraph  immediately  following  Section
5.1(iii) which shall read as follows:

          Nothing  in  this  Section  5.1  shall  be  construed  to  prohibit  a
          consolidation or merger between the Company,  any Guarantor and/or any
          Restricted Subsidiary or among Restricted  Subsidiaries or Guarantors,
          nor prohibit the sale,  assignment,  transfer,  lease,  conveyance  or
          other disposal by the Company or any  Restricted  Subsidiary of all or
          substantially  all of its  properties or assets in one or more related
          transactions to any Restricted Subsidiary or to the Company.

          (f) Section 6.1 of the Indenture is hereby amended by (i) changing the
reference to "Excess  Proceeds Offer" in Section 6.1(2) to "Net Proceeds Offer,"
(ii)  amending  Section  6.1(3) in its  entirety  to read as  follows:  "(3) the
Company  defaults in the  performance  of or breaches any of the  provisions  of
Sections 4.10, 4.12 or 4.14 hereof" and (iii) deleting  Sections 6.1(4),  6.1(6)
and 6.1(7) in their entirety.

          (g) Section 8.1 of the Indenture is hereby amended by (i) deleting the
words "(as certified by a nationally  recognized  accounting  firm designated by
the  Company)" on the sixth and seventh  lines of Section  8.1(1) and  inserting
therefor the words "(as certified by an Officers'  Certificate  delivered by the
Company)",  (ii) inserting the word "and" after Section  8.1(1),  (iii) deleting
Sections 8.1(2) and 8.1(3) and (iv) deleting the first sentence of the paragraph
immediately  following 8.1(4) which begins with the words "Then, this Indenture"
and replacing it with a new sentence which shall read as follows:

          Then,  this  Indenture  shall cease to be of further effect (except as
          provided  in  this  paragraph),  and the  Trustee,  on  demand  of the
          Company, shall execute proper instruments  acknowledging  confirmation
          of and discharge under this Indenture in the case of clause (A) above,
          and the Company's ability not to comply with restrictive covenants and
          related Events of Default in the case of clause (B) above, and, in the
          case of clauses (A) and (B) above,  the  release of the Liens  created
          under the Security Documents.

                                       6



                                    ARTICLE 2

                                  MISCELLANEOUS

         Section 2.01. The supplement to the Indenture  effected hereby shall be
binding upon all Holders of the Securities,  their transferees and assigns.  All
Securities  issued  and  outstanding  on the  date  hereof  shall be  deemed  to
incorporate  by reference or include the  supplement to the  Indenture  effected
hereby.

         Section 2.02. All terms used in this Fifth Supplemental Indenture which
are defined in the Indenture shall have the meanings  specified in the Indenture
unless the context of this Supplemental Indenture otherwise requires.

         Section 2.03. This Fifth Supplemental  Indenture shall become a binding
agreement between the parties when counterparts  hereof shall have been executed
and delivered by each of the parties hereto. The amendments set forth in Article
1 shall become  operative on the opening of business on the Acceptance  Date, as
defined in the Company's Offer to Purchase and Consent  Solicitation  Statement,
dated February 2, 1998,  relating to the Company's  offer to purchase all of the
outstanding Notes.

         Section 2.04.  This Fifth  Supplemental  Indenture  shall be construed,
interpreted and the rights of the parties determined in accordance with the laws
of the State of New York, as applied to contracts made and performed  within the
State of New York, without regard to principles of conflicts of law.

         Section  2.05.  This Fifth  Supplemental  Indenture  may be executed in
several counterparts,  each of which shall be an original and all of which shall
constitute but one and the same amendment.

         Section 2.06. The recitals contained in this Supplemental Indenture are
made by the Company and not by the Trustee and all of the  provisions  contained
in the Indenture, in respect of the rights, privileges,  immunities,  powers and
duties of the Trustee shall be  applicable in respect  thereof as fully and with
like effect as if set forth herein in full.

         IN  WITNESS  WHEREOF,   the  parties  hereto  have  caused  this  Fifth
Supplemental Indenture to be duly executed as of the date first above written.



                                       7


                                      TEREX CORPORATION

                                      By:___________________________
                                         Name:  Brian J. Henry
ATTEST:                                  Title: Vice President-Finance/Treasurer

- -------------------------
Eric I Cohen, Secretary



                                      UNITED STATES TRUST COMPANY
                                      OF NEW YORK, as Trustee


                                      By:______________________________
                                         Name:
ATTEST:                                  Title:

- -------------------------


                                      GUARANTORS:

                                      KOEHRING CRANES, INC.



                                      By:____________________________
                                         Name:  Brian J. Henry
ATTEST:                                  Title: Treasurer

- --------------------------
Eric I Cohen, Secretary


                                      PPM CRANES, INC.


                                      By:___________________________________
                                         Name:  Brian J. Henry
ATTEST:                                  Title: Treasurer

- ---------------------------
Eric I Cohen, Secretary

                                       8




                                       TEREX-TELELECT INC.


                                       By:___________________________________
                                          Name:  Brian J. Henry
ATTEST:                                   Title: Treasurer

- ---------------------------
Eric I Cohen, Secretary


                                       TEREX AERIALS INC.


                                       By:________________________________
                                          Name:  Brian J. Henry
ATTEST:                                   Title: Treasurer

- --------------------------
Eric I Cohen, Secretary


                                        TEREX WEST COAST INC.


                                        By:________________________________
                                           Name:  Brian J. Henry
ATTEST:                                    Title: Treasurer

- --------------------------
Eric I Cohen, Secretary


                                        TEREX ATLANTICO, INC.


                                        By:_________________________________
                                           Name:  Brian J. Henry
ATTEST:                                    Title: Treasurer

- --------------------------
Eric I Cohen, Secretary


                                       9



                                        TEREX AVIATION GROUND EQUIPMENT INC.


                                        By:________________________________
                                           Name:  Brian J. Henry
ATTEST:                                    Title: Treasurer

- --------------------------
Eric I Cohen, Secretary


                                        TEREX-RO CORPORATION


                                        By:________________________________
                                           Name:  Brian J. Henry
ATTEST:                                    Title: Treasurer

- --------------------------
Eric I Cohen, Secretary



                                        TEREX CRANES, INC.


                                        By:________________________________
                                           Name:  Brian J. Henry
ATTEST:                                    Title: Treasurer

- --------------------------
Eric I Cohen, Secretary



                                         PAYHAULER CORP.


                                         By:________________________________
                                            Name:  Brian J. Henry
ATTEST:                                     Title: Treasurer

- --------------------------
Eric I Cohen, Secretary


                                       10



                                          TEREX BARAGA PRODUCTS, INC.


                                          By:________________________________
                                             Name:   Brian J. Henry
ATTEST:                                      Title:  Treasurer


- --------------------------
Eric I Cohen, Secretary


                                           M & M ENTERPRISES OF BARAGA, INC.


                                           By:_______________________________
                                              Name:  Brian J. Henry
ATTEST:                                       Title: Treasurer

- --------------------------
Eric I Cohen, Secretary



                                           PROGRESSIVE COMPONENTS, INC.



                                           By:_______________________________
                                              Name:  Brian J. Henry
ATTEST:                                       Title: Treasurer

- --------------------------
Eric I Cohen, Secretary