• transfer case can be set up to drive PTO
• PTO usually can not handle full engine power; drop box can
• dropbox
  • can drive either wheels or pto
  • can not drive at the same time
  • use to drive something require more power
• power tower
  • monsy: blue, aluminum
  • chasy: red, cast iron, direct mount
• clutch pack engaging, “hot shift”
• others has to stop trans to engage pto
• pressure protection vavle used to protect air brake system by prevent air in tank drop down 65-70psi otherwise air brake on
• PTO air apply, spring release
• rather use bigger backlash than smaller backlash as gears expands on heating up, say spec [.005,.014] => should use 0.14
• max 4 paper, if need more, use sleeve, fiber gasket