OWNER / OPERATOR MANUAL
LeakProof III
4
DOC06436 Rev B
2.3 Floor Speed vs Pump Flow Rate
With a Fuller 13 or 15 speed transmission, a bottom mount 118% series 442/489 Chelsea power take off,
and a Commercial p-51 pump with a 2 1/2” gear, the tractor unload RPM in relation to floor movement is
as follows*.
Truck RPM
Pump Output
Floor Movement
950 RPM
30 gallon
7.3 ft/minute
1270 RPM
40 gallon
9.8 ft/minute
1430 RPM
45 gallon
11.1 ft/minute
1750 RPM
55 gallon
13.3 ft/minute
1900 RPM
60 gallon
14.6 ft/minute
Above specifications are for KEITH
®
LEAKPROOF III Drive units with 80mm bore cylinders. These are
approximate feet per minute only and should be used strictly as a guide.
