Firetruck pump cutaway.
Fullsize image: https://diqn32j8nouaz.cloudfront.net...y_fullsize.jpg
https://diqn32j8nouaz.cloudfront.net...mp_cutaway.jpg
Previously:
https://www.homemadetools.net/forum/...861#post167675
https://www.homemadetools.net/forum/...090#post164909
https://www.homemadetools.net/forum/...281#post146162
https://www.homemadetools.net/forum/...890#post100252
https://www.homemadetools.net/forum/...792#post152292
