1









                                            AMENDMENT No. 2, dated as of October
                                    20, 1998 (this  "Amendment"),  to the Credit
                                    Agreement  dated  as of March  6,  1998,  as
                                    amended  (the  "Credit  Agreement"),   among
                                    TEREX  CORPORATION,  a Delaware  corporation
                                    ("Terex"),   TEREX  EQUIPMENT   LIMITED,   a
                                    company   organized   under   the   laws  of
                                    Scotland,  P.P.M.  S.A., a company organized
                                    under the laws of the  Republic  of  France,
                                    UNIT RIG  (AUSTRALIA)  PTY.  LTD., a company
                                    organized under the laws of New South Wales,
                                    Australia,   and  P.P.M.  Sp.A.,  a  company
                                    organized  under the laws of the Republic of
                                    Italy, the Lenders (as defined in the Credit
                                    Agreement), the Issuing Banks (as defined in
                                    the  Credit  Agreement)  and  CREDIT  SUISSE
                                    FIRST  BOSTON,  a bank  organized  under the
                                    laws of Switzerland,  acting through its New
                                    York  branch  ("CSFB"),   as  administrative
                                    agent (in such capacity, the "Administrative
                                    Agent")  and as  collateral  agent  (in such
                                    capacity,  the  "Collateral  Agent") for the
                                    Lenders.

                  A.  Pursuant  to the Credit  Agreement,  the  Lenders  and the
Issuing Banks have extended  credit to the Borrowers,  and have agreed to extend
credit to the  Borrowers,  in each case pursuant to the terms and subject to the
conditions set forth therein.

                  B. The Borrowers have requested that certain provisions of the
Credit Agreement be amended as set forth herein.

                  C. The  Required  Lenders  are  willing  to amend  the  Credit
Agreement, pursuant to the terms and subject to the conditions set forth herein.

                  D.  Capitalized  terms used and not otherwise  defined  herein
shall have the meanings assigned to them in the Credit Agreement.

                  Accordingly,  in consideration of the mutual agreements herein
contained and other good and valuable consideration, the sufficiency and receipt
of which are hereby acknowledged, the parties hereto agree as follows:

                  SECTION  1.  Amendment  to the  Preliminary  Statement  of the
Credit Agreement.  The third sentence of the second paragraph of the preliminary
statement  of the Credit  Agreement is hereby  amended by  replacing  the amount
"$35,000,000" with the amount "$60,000,000".

                  SECTION  2.  Amendment  to  Section   2.23(b)  of  the  Credit
Agreement.  The last  sentence  of Section  2.23(b) of the Credit  Agreement  is
hereby   amended  by  replacing  the  amount   "$35,000,000"   with  the  amount
"$60,000,000".

                  SECTION 3.  Representations and Warranties.  Each of the
Borrowers represents and warrants to each other party hereto that, after giving
effect to this Amendment, (a) the representations and warranties set forth in
Article III  of  the  Credit  Agreement are  true  and correct  in  all material




                                                                               2

respects on and as of the date hereof with the same effect as though made on and
as of the date hereof,  except to the extent such representations and warranties
expressly  relate to an earlier date, and (b) no Default or Event of Default has
occurred and is continuing.

                  SECTION 4. Conditions to  Effectiveness.  This Amendment shall
become  effective  as of the date  first  written  above  on the  date  that the
Administrative  Agent shall have received  counterparts of this Amendment which,
when taken together, bear the signatures of the Required Lenders.

                  SECTION 5. Effect of Amendment.  Except as expressly set forth
herein,  this Amendment  shall not by implication  or otherwise  limit,  impair,
constitute  a waiver of, or  otherwise  affect the  rights and  remedies  of the
Lenders,  the Swingline  Lender,  any Issuing Bank, the Collateral  Agent or the
Administrative Agent, under the Credit Agreement or any other Loan Document, and
shall  not  alter,  modify,  amend  or in any  way  affect  any  of  the  terms,
conditions,  obligations,  covenants  or  agreements  contained  in  the  Credit
Agreement or any other Loan Document,  all of which are ratified and affirmed in
all respects and shall  continue in full force and effect.  Nothing herein shall
be deemed to  entitle  any  Borrower  to a consent  to, or a waiver,  amendment,
modification  or other  change of, any of the  terms,  conditions,  obligations,
covenants  or  agreements  contained  in the Credit  Agreement or any other Loan
Document in similar or different  circumstances.  This Amendment shall apply and
be  effective  only with  respect  to the  provisions  of the  Credit  Agreement
specifically referred to herein.

                  SECTION 6. Counterparts. This Amendment may be executed in any
number of counterparts and by different parties hereto in separate counterparts,
each of which when so executed and  delivered  shall be deemed an original,  but
all such counterparts together shall constitute but one and the same instrument.
Delivery of any executed  counterpart  of a signature  page of this Amendment by
facsimile  transmission shall be as effective as delivery of a manually executed
counterpart hereof.

                  SECTION 7.  Applicable Law.  THIS AMENDMENT SHALL  BE GOVERNED
BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.

                  SECTION 8.  Headings.  The headings of this Amendment are for
purposes of reference only and shall not limit or otherwise affect the meaning
hereof.

                  IN WITNESS  WHEREOF,  the  parties  hereto  have  caused  this
Agreement to be duly executed by their respective  authorized officers as of the
day and year first above written.


                                             TEREX CORPORATION,

                                                 by
                                                   /s/ Susan K. Sutherland
                                                 -------------------------------
                                                   Name:     Susan K. Sutherland
                                                   Title:    Treasurer






                                                                               3

                                             TEREX EQUIPMENT LIMITED,

                                                 by
                                                   /s/ Eric Cohen
                                                 -------------------------------
                                                   Name:     Eric Cohen
                                                   Title:    Director


                                             P.P.M. S.A.,

                                                 by
                                                   /s/ J.M. Fleury
                                                 -------------------------------
                                                   Name:   J.M. Fleury
                                                   Title:  V.P., General Manager


                                             UNIT RIG (AUSTRALIA) PTY. LTD.,

                                                 by
                                                   /s/ Eric Cohen
                                                 -------------------------------
                                                   Name:  Eric Cohen
                                                   Title:    Director


                                             P.P.M. Sp.A,

                                                 by
                                                   /s/ Michele Hillebrand
                                                 -------------------------------
                                                   Name:     Michele Hillebrand
                                                   Title:    General Manager






                                                                               4



                                       CREDIT SUISSE FIRST BOSTON,
                                       individually and as Administrative Agent,
                                       Collateral Agent and Swingline Lender,

                                                 by
                                                   /s/ William O'Daly
                                                 -------------------------------
                                                   Name:     William O'Daly
                                                   Title:    Vice President

                                                 by
                                                   /s/ J. Glodowski
                                                 -------------------------------
                                                   Name:     J. Glodowski
                                                   Title:    Managing Director


                                             ABN AMRO BANK N.V.,

                                                 by
                                                   /s/ Donald Sutton
                                                 -------------------------------
                                                   Name:  Donald Sutton
                                                   Title:    Vice President

                                                 by
                                                   /s/ Stephen Van Besien
                                                 -------------------------------
                                                   Name:   Stephen Van Besien
                                                   Title:   Group Vice President


                                          ALLIANCE CAPITAL MANAGEMENT
                                          L.P., as Manager on behalf of ALLIANCE
                                          CAPITAL FUNDING, L.L.C. by:
                                          ALLIANCE CAPITAL MANAGEMENT
                                          CORPORATION, General Partner of
                                          Alliance Capital Management L.P.,

                                                 by
                                                   /s/ Kenneth G. Ostmann
                                                 -------------------------------
                                                   Name:  Kenneth G. Ostmann
                                                   Title:    Vice President







                                                                               5


                                             ARES LEVERAGED INVESTMENT
                                             FUND L.P.,

                                             by   ARES Management, L.P.

                                             by    ARES Operating Member, LLC
                                             Its   General Partner

                                                 by
                                                   /s/ David A. Sachs
                                                 -------------------------------
                                                   Name:   David A. Sachs
                                                   Title:    Vice President


                                             BANK OF TOKYO-MITSUBISHI TRUST
                                             COMPANY,

                                                 by
                                                   /s/ Paul Malecki
                                                 -------------------------------
                                                   Name:   Paul Malecki
                                                   Title:    Vice President


                                             BANKBOSTON N.A., as Revolver and
                                             Term A Lender,

                                                 by
                                                   /s/ Garrett Quinn
                                                 -------------------------------
                                                   Name:  Garrett Quinn
                                                   Title:    Vice President


                                             BANKBOSTON, N.A.,

                                                 by
                                                   /s/ Garrett Quinn
                                                 -------------------------------
                                                   Name:   Garrett Quinn
                                                   Title:    Vice President


                                             CIBC INC.,

                                                 by
                                                   /s/ Timothy Doyle
                                                 -------------------------------
                                                   Name:   Timothy Doyle
                                                   Title:    Managing Director







                                                                               6


                                             CREDIT LYONNAIS, NEW YORK
                                             BRANCH,

                                                 by
                                                 -------------------------------
                                                   Name:
                                                   Title:


                                             CYPRESSTREE INVESTMENT
                                             PARTNERS I, LTD., BY: CYPRESSTREE
                                             INVESTMENT MANAGEMENT
                                             COMPANY INC., as portfolio manager,

                                                 by
                                                   /s/ Philip C. Robbins
                                                 -------------------------------
                                                   Name:   Philip C. Robbins
                                                   Title:     Principal


                                             DEBT STRATEGIES FUND II, INC.,

                                                 by
                                                 -------------------------------
                                                   Name:
                                                   Title:


                                             DRESDNER BANK AG, NEW YORK
                                             AND GRAND CAYMAN BRANCHES,

                                                 by
                                                 -------------------------------
                                                   Name:
                                                   Title:

                                                 by
                                                 -------------------------------
                                                   Name:
                                                   Title:


                                             FIRST DOMINION FUNDING I,

                                                 by
                                                 -------------------------------
                                                   Name:
                                                   Title:








                                                                               7


                                              FIRST UNION NATIONAL BANK,

                                                 by
                                                  /s/ Hank Biedrzyscki
                                                 -------------------------------
                                                  Name: Hank Biedrzyscki
                                                  Title: Vice President/Director


                                             GENERAL ELECTRIC CAPITAL
                                             CORPORATION,

                                                 by
                                                   /s/ Janet K. Williams
                                                 -------------------------------
                                                Name: Janet K. Williams
                                                Title: Duly Authorized Signatory


                                             KZH III LLC,

                                                 by
                                                   /s/ Virginia Conway
                                                 -------------------------------
                                                   Name:   Virginia Conway
                                                   Title: Authorized Agent


                                             LEHMAN COMMERCIAL PAPER INC,

                                                 by
                                                   /s/ Michelle Swanson
                                                 -------------------------------
                                                   Name:   Michelle Swanson
                                                   Title:   Authorized Signatory


                                             MARINE MIDLAND BANK,

                                                 by
                                                   /s/ Randolph M. Ross
                                                 -------------------------------
                                                   Name:   Randolph M. Ross
                                                   Title: Authorized Signatory


                                             MERRILL LYNCH GLOBAL
                                             INVESTMENT SERIES:  INCOME
                                             STRATEGIES PORTFOLIO, by MERRILL
                                             LYNCH ASSET MANAGEMENT, L.P., as
                                             investment advisor,

                                                 by
                                                   /s/ Paul Travers
                                                 -------------------------------
                                                   Name:   Paul Travers
                                                   Title:     Vice President






                                                                               8



                                             MERRILL LYNCH, PIERCE, FENNER &
                                             SMITH INCORPORATED,

                                                 by
                                                   /s/ Neil Brisson
                                                 -------------------------------
                                                   Name:   Neil Brisson
                                                   Title:    Director


                                             MERRILL LYNCH PRIME RATE
                                             PORTFOLIO, by MERRILL LYNCH
                                             ASSET MANAGEMENT, L.P., as
                                             investment advisor,

                                                 by
                                                   /s/ Paul Travers
                                                 -------------------------------
                                                   Name:   Paul Travers
                                                   Title:     Vice President


                                             MOUNTAIN CLO TRUST,

                                                 by
                                                 -------------------------------
                                                   Name:
                                                   Title:


                                             NATIONAL CITY BANK,

                                                 by
                                                   /s/ Joseph D. Robison
                                                 -------------------------------
                                                   Name:   Joseph D. Robison
                                                   Title:    Vice President


                                             PAM CAPITAL FUNDING LP

                                             by   HIGHLAND CAPITAL
                                             MANAGEMENT, L.P., as Collateral
                                             Manager

                                                 by
                                                  /s/ Mark K. Okada
                                                 -------------------------------
                                                 Name:   Mark K. Okada CFA
                                                 Title: Executive Vice President








                                                                               9


                                             PUTNAM DIVERSIFIED INCOME
                                             TRUST,

                                                 by
                                                 -------------------------------
                                                   Name:
                                                   Title:


                                             PUTNAM FIDUCIARY TRUST
                                             COMPANY, on behalf of PUTNAM HIGH
                                             YIELD MANAGED TRUST,

                                                 by
                                                 -------------------------------
                                                   Name:
                                                   Title:


                                             PUTNAM HIGH YIELD TRUST,

                                                 by
                                                 -------------------------------
                                                   Name:
                                                   Title:


                                             PUTNAM VARIABLE TRUST, on behalf
                                             of PUTNAM VT DIVERSIFIED INCOME
                                             FUND,

                                                 by
                                                 -------------------------------
                                                   Name:
                                                   Title:


                                             SKANDINAVISKA ENSKILDA
                                             BANKEN AB (publ), NEW YORK
                                             BRANCH,

                                                 by
                                                   /s/ Philip Montemurro
                                                 -------------------------------
                                                   Name:   Philip Montemurro
                                                   Title:    Vice President

                                                 by
                                                   /s/ Sveryer Johansson
                                                 -------------------------------
                                                   Name:   Sveryer Johansson
                                                   Title:     Vice President






                                                                              10

                                             TORONTO DOMINION (TEXAS), INC.,

                                                 by
                                                 -------------------------------
                                                   Name:
                                                   Title:


                                             GOLDMAN SACHS CREDIT PARTNERS
                                             LP

                                                 by
                                                   /s/ Stephen J. McGuinness
                                                 -------------------------------
                                                   Name:   Stephen J. McGuiness
                                                   Title:     Managing Director


                                             KZH PAMCO LLC,

                                                 by
                                                   /s/ Virginia Conway
                                                 -------------------------------
                                                   Name:   Virginia Conway
                                                   Title:      Authorized Agent


                                             PAMCO CAYMAN, LTD.

                                             by  HIGHLAND CAPITAL
                                             MANAGEMENT, L.P., as Collateral
                                             Manager

                                                 by
                                                   /s/ Mark K. Okada
                                                 -------------------------------
                                                 Name:   Mark K. Okada CFA
                                                 Title: Executive Vice President


                                             DEUTSCHE FINANCIAL SERVICES
                                             CORPORATION

                                                 by
                                                 -------------------------------
                                                   Name:
                                                   Title: