What transmission is in a 1966 Pettibone Multicrane 25?

[Jayne_Monie]

My Pettibone Multicrane 25 has been sitting for two years and now grinds when put in gear. The shift cables look fine. Does anyone know the transmission model or where I can find a manual?

 

[James R.]

My Pettibone Multicrane 25 has been sitting for two years and now grinds when put in gear. The shift cables look fine. Does anyone know the transmission model or where I can find a manual?

I would check the transmission fluid and linkage first, especially after sitting for two years.