Exhibit 4.11 [CONFORMED COPY] SIXTH WAIVER ------------ SIXTH WAIVER (the "Waiver"), dated as of August 3, 1993, among COLTEC INDUSTRIES INC (the "Company") and the financial institutions party to the Credit Agreement referred to below (the "Banks"). All capitalized terms used herein and not otherwise defined shall have the respective meanings provided such terms in the Credit Agreement. W I T N E S S E T H : - - - - - - - - - - WHEREAS, the Company, the Banks, Bankers Trust Company, Chemical Bank (as successor by merger with Manufacturers Hanover Trust Company), Barclays Bank PLC, New York Branch, and Credit Lyonnais New York Branch, as Agents, and Bankers Trust Company, as Administrative Agent, are parties to a Credit Agreement, dated as of March 24, 1992, as amended to the date hereof (as so amended, the "Credit Agreement"); and WHEREAS, the parties hereto wish to waive certain provisions of the Credit Agreement as herein provided; NOW, THEREFORE, it is agreed: 1. Notwithstanding anything to the contrary in Section 9.05(c) of the Credit Agreement, the Company shall be permitted to enter into financial leases, guarantees and other instruments in connection with the issuance of industrial development revenue bonds (the "New IDBs") to refinance each of the (i) $6,055,000 9-7/8% Industrial Development Revenue Bonds (Alabama); (ii) $3,000,000 9-7/8% Industrial Building Revenue Bonds (Illinois); (iii) $1,000,000 9-7/8% Industrial Development Revenue Bonds (Kentucky); (iv) $3,000,000 9-7/8% Industrial Development Revenue Bonds (Arkansas); and (v) $2,500,000 9-7/8% Industrial Development Revenue Bonds (Illinois) (collectively, the "9-7/8% Bonds"), PROVIDED that, (i) the principal amount of the New IDBs shall not exceed $15,055,000, (ii) the maturity date of all of the New IDBs shall be no earlier than the thirteenth anniversary of the date of issuance thereof and (iii) the covenants and defaults set forth in the New IDBs shall not be more restrictive as to the Company than those set forth in the 9-7/8% Bonds. 2. Notwithstanding anything to the contrary in the Credit Agreement, in the event the Company is unable to sell all or any part of the New IDBs, after the Company has irrevocably committed to effect the redemption of the 9- 7/8% Bonds, the Company shall nonetheless still be permitted to redeem up to $5,935,000 of the 9-7/8% Bonds in accordance with the terms of the respective indenture at a redemption price not in excess of the redemption price set forth in the respective indenture. 3. Notwithstanding anything to the contrary in Sections 9.06 and 9.17 of the Credit Agreement, the Company shall be permitted to establish a wholly- owned Singapore subsidiary with an authorized paid-in-capital not to exceed $100,000, PROVIDED that, 100% of the stock of such new subsidiary is pledged pursuant to the Company Pledge Agreement and the certificates representing such stock, together with stock powers duly executed in blank, are delivered to the Collateral Agent. 4. In order to induce the Banks to enter into this Waiver, the Company hereby (i) makes each of the representations, warranties and agreements contained in Section 7 of the Credit Agreement and (ii) represents and warrants that there exists no Default or Event of Default, in each case on the Waiver Effective Date (as defined herein) before and after giving effect to this Waiver. 5. This Waiver is limited as specified and shall not constitute a modification, acceptance or waiver of any other provision of the Credit Agreement or any other Credit Document. 6. This Waiver may be executed in any number of counterparts and by the different parties hereto on separate counterparts, each of which counterparts when executed and delivered shall be an original, but all of which shall together constitute one and the same instrument. A complete set of counterparts shall be lodged with the Company and the Administrative Agent. 7. THIS WAIVER AND THE RIGHTS AND OBLIGATIONS OF THE PARTIES HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE WITH AND GOVERNED BY THE LAW OF THE STATE OF NEW YORK. 8. This Waiver shall become effective on the date (the "Waiver Effective Date") when the Company and the Required Banks shall have signed a copy hereof (whether the same or different copies) and shall have delivered (including -2- by way of telecopier) the same to the Administrative Agent at the Notice Office. 9. From and after the Waiver Effective Date all references to the Credit Agreement and the other Credit Documents to the Credit Agreement shall be deemed to be references to the Credit Agreement as modified hereby. IN WITNESSES WHEREOF, each of the parties hereto has caused a counterpart of this Amendment to be duly executed and delivered as of the date first above written. COLTEC INDUSTRIES INC By /s/ John J. Ennis ------------------------------ Title: Assistant Treasurer BANKERS TRUST COMPANY, Individually, as Agent, as Mortgagee and as Administrative Agent By /s/ Mary Kay Coyle ------------------------------ Title: Vice President CHEMICAL BANK (as successor by merger with Manufacturers Hanover Trust Company), Individually, and as Agent By /s/ William M. Lane ------------------------------ Title: Managing Director -3- BARCLAYS BANK PLC, NEW YORK BRANCH, Individually, and as Agent By /s/ Russell Gorman ------------------------------ Title: Director CREDIT LYONNAIS NEW YORK BRANCH, Individually, and as Agent By /s/ Sebastian Rocco ------------------------------ Title: First Vice President CREDIT LYONNAIS CAYMAN ISLAND BRANCH By /s/ Sebastian Rocco ------------------------------ Title: Authorized Signature THE BANK OF MONTREAL By /s/ John M. Denson ------------------------------ Title: Managing Director THE BANK OF NEW YORK By /s/ David K. Nichols ------------------------------ Title: Senior Vice President -4- THE BANK OF TOKYO TRUST COMPANY By /s/ Neal Hoffson ------------------------------ Title: Vice President BANQUE FRANCAISE DU COMMERCE EXTERIEUR By /s/ David S. Kopp ------------------------------ Title: Vice President By /s/ Jean Richard ------------------------------ Title: First Vice President BANQUE PARIBAS By /s/ Stephen M. Burns ------------------------------ Title: Vice President By /s/ Gary A. Binning ------------------------------ Title: Vice President THE CHASE MANHATTAN BANK, N.A. By /s/ S. Clarke Moody ------------------------------ Title: Vice President -5- COMMONWEALTH BANK OF AUSTRALIA By /s/ Paul Hamilton ------------------------------ Title: General Manager EATON VANCE PRIME RATE RESERVES By /s/ Jeffrey S. Garner ------------------------------ Title: Vice President THE FUJI BANK, LIMITED, New York Branch By____________________________ Title: GIROCREDIT BANK, New York Branch By____________________________ Title: THE INDUSTRIAL BANK OF JAPAN, LIMITED, New York Branch By /s/ Junri Oda ------------------------------ Title: Senior Vice President & Senior Manager -6- THE LONG-TERM CREDIT BANK OF JAPAN, LIMITED, NEW YORK BRANCH By /s/ Mitsuo Matsunaga ------------------------------ Title: Vice President THE MITSUBISHI TRUST AND BANKING CORPORATION By /s/ Patricia Loret de Mola ------------------------------ Title: Senior Vice President THE NIPPON CREDIT BANK, LTD., New York Branch By /s/ Michael A. Monteleone ------------------------------ Title: Assistant Vice President UNION BANK OF FINLAND LIMITED, Grand Cayman Branch By /s/ Durval Araujo ------------------------------ Title: Vice President By /s/ John Kehnle ------------------------------ Title: Vice President -7- VAN KAMPEN MERRITT PRIME RATE INCOME TRUST By /s/ Jeffrey W. Maillet ------------------------------ Title: Vice President & Portfolio Manager WESTPAC BANKING CORPORATION Grand Cayman Branch By____________________________ Title: PRIME INCOME TRUST By____________________________ Title: ARAB BANKING CORP. By /s/ Louise Bilbro ------------------------------ Title: Vice President BAHRAIN MIDDLE EAST BANK E.C. New York Agency By /s/ Audrey Brown ------------------------------ Title: Assistant Vice President By /s/ Frank Renda ------------------------------ Title: Assistant Vice President -8- BANK OF IRELAND By /s/ Randolph M. Ross ------------------------------ Title: Vice President THE BANK OF NOVA SCOTIA By /s/ Stephen Lockhart ------------------------------ Title: Vice President BANK OF SCOTLAND By /s/ Catherine M. Oniffrey ------------------------------ Title: Vice President MERRILL LYNCH PRIME FUND INC. By /s/ R. Douglas Henderson ------------------------------ Title: Authorized Signatory MERRILL LYNCH PRIME RATE PORTFOLIO BY MERRILL LYNCH INVESTMENT MANAGEMENT, INC., as investment advisor By /s/ R. Douglas Henderson ------------------------------ Title: Authorized Signatory PROTECTIVE LIFE INSURANCE COMPANY By /s/ Mark K. Okada ------------------------------ Title: Manager - Fixed Income -9- RESTRUCTURED OBLIGATION BACKED BY SENIOR ASSETS B.V. By____________________________ Title: RYOSHIN LEASING (USA) INC. By____________________________ Title: STICHTING RESTRUCTURED OBLIGATIONS BACKED BY SENIOR ASSETS 2 (ROSA2) (Chancellor) By____________________________ Title: TOKYO CITY FINANCE (ASIA) LIMITED By /s/ Sadami Kubota ------------------------------ Title: Managing Director TOYO TRUST AND BANKING COMPANY, LTD. New York Branch By____________________________ Title: -10- TRAVELERS INSURANCE COMPANY By____________________________ Title: -11-