POWER OF ATTORNEY

Know all by these presents, that the undersigned, Thomas J. Polnaszek,
hereby constitutes and appoints each of Robert G. Bohn, Charles L. Szews
and Bryan J. Blankfield, signing singly, the undersigneds true and lawful
attorney in fact to:

(1)	execute for and on behalf of the undersigned, in the undersigneds
capacity as an officer and/or director of Oshkosh Truck Corporation (the
Company), Forms 3, 4, and 5 and Form 144 in accordance with the Securities
Exchange Act of 1934 and the rules thereunder;

(2)	do and perform any and all acts for and on behalf of the undersigned
which may be necessary or desirable to complete and execute any such Form
3, 4, or 5 and Form 144, complete and execute any amendment or amendments
thereto, and timely file such form with the United States Securities and
Exchange Commission and any stock exchange or similar authority; and

(3)	take other action in connection with the foregoing which, in the
opinion of such attorney in fact, may be of benefit to, in the best interest
of, or legally required by, the undersigned, it being understood that the
documents executed by such attorney in fact on behalf of the undersigned
pursuant to this Power of Attorney shall be in such form and shall contain
such terms and conditions as such attorney in fact may approve in such
attorney in facts discretion.

The undersigned hereby grants to each such attorney in fact full power and
authority to do and perform any and every act and thing whatsoever requisite,
necessary, or proper to be done in the exercise of any of the rights and
powers herein granted, as fully to all intents and purposes as the
undersigned might or could do if personally present, with full power of
substitution or revocation, hereby ratifying and confirming all that such
attorney in fact, or such attorney in facts substitute or substitutes, shall
lawfully do or cause to be done by virtue of this power of attorney and the
rights and powers herein granted.  The undersigned acknowledges that the
foregoing attorneys in fact, in serving in such capacity at the request of
the undersigned, are not assuming, nor is the Company assuming, any of the
undersigneds responsibilities to comply with Section 16 or any other
provision of the Securities Exchange Act of 1934.

This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4, and 5 and Form 144 with
respect to the undersigneds holdings of and transactions in securities issued
by the Company, unless earlier revoked by the undersigned in a signed writing
delivered to the foregoing attorneys in fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 31st of October, 2002.


/s/ Thomas J. Polnaszek