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Fuller 5C650


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By rlchv70 - Friday, April 02, 2021 2:52 AM
I have what i believe is a Fuller 5C650 transmission in my 1957 Howe Defender fire truck. Does anyone know were I can find information on it? Service manual? Operator's manual? What fluid should I use? Fill/level location? Any other useful information.
By Geoff Weeks - Friday, April 02, 2021 5:47 AM
SAE 50 or 40 engine oil will see you right. Should be a pipe plug on the side of the trans, fill to bottom of hole. GL-1 90 could also be used.