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HIGHWAY EQUIPMENT COMPANY
22
97373-A
Page Rev. A
INSTALLATION INSTRUCTIONS CONTINUED
2. Pump PTO Selection:
The following chart shows pumps available through Highway Equipment Company (HECO):
HECO Pump
Part No.
Pump CID
Theoretical Pump GPM
(100% efficiency)
Pump RPM
86664 3.87
30
1800
86665 4.38
34
1800
To determine PTO (Power Take-Off) percentage:
(PTO RPM ÷ OPTIMAL TRUCK ENGINE RPM) x 100 = PTO%
To determine Engine RPM:
PTO RPM ÷ (PTO% ÷ 100) = Engine RPM
TRUCK REQUIREMENTS
In mounting the L2020G4 spreader on a truck, the following questions must be considered:
1. Is the CA/CT (Cab to Axle/Cab to Tandem) dimension of the truck correct for the length of the
spreader?
See the Dimensions charts on page 20. This will assist in matching spreader to truck.
2. Is the truck’s GAWR (Gross Axle Weight Rating) and the GVWR (Gross Vehicle Weight Rating)
adequate to carry the fully loaded spreader?
Refer to your New Leader dealer. He knows where to find the GAWR and GVWR for most
trucks, and how to calculate the weight distribution on each axle and total loaded vehicle weight.
Do not select a PTO % and an engine RPM resulting in more than 3000 PTO RPM.
Driving the pumps (referenced above) at speeds greater than 3000 RPM will result in
premature failure of the pump and other hydraulic components.
IMPORTANT!