Ex-MBTA Pettibone Hi-Rail crane getting serviced at the Seahsore Trolley Museum.

This vehicle has a speed-swing front arm (hydraulic) and high rail gear to run on the rails at the museum.

Interesting note-the way the high-rail wheels are powered, the tires run against them, but the 'bone needs the tires to be going backwards on rails for it to go forwards.

Photographed by Mark Sylvester (StmTrolleyguy), May 15, 2004.
Added to the photo archive by Mark Sylvester, May 17, 2004.
Railroad: Seashore Trolley Museum.

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