EXHIBIT 23 INDEPENDENT AUDITORS' CONSENT We consent to the incorporation by reference in this Registration Statement of Oshkosh Truck Corporation on Form S-8 of our report dated October 28, 2002, appearing in the Annual Report on Form 10-K of Oshkosh Truck Corporation for the year ended September 30, 2002. /s/ Deloitte & Touche LLP Milwaukee, Wisconsin December 2, 2002