3 tractor requirements, 2 tire pressure – Seed Hawk TOOLBAR 2009 User Manual
Page 20

Seed Hawk Manual
Tool Bar
Page 17
3.2 TIRE PRESSURE
 
Use the following chart to check and adjust, if necessary, tire pressure. 
 
Recommended Tire Air Pressure
Tire Size
lb/in2 (psi)
kPa
4.80-8 18 124
11L15 45 310
12.5L15 45 310
19.0/45-17 45
310
500/45-22.5 48
330
30.5L32 32 220
NOTE: Proper inflation of tire pressure contributes to longer tire life and proper 
flotation for field operations. Tire inflation pressures listed are recommended 
initial settings. Some soil conditions and operating environments may dictate 
deviation (on Packer Tires Only) from the recommended settings. Contact 
Seed Hawk
®
for additional information and advice if needed.
 
NOTE: If you do change your tire pressure, ensure that your opener is correctly placing your seed 
at the depth you require. 
 
 
3.3 TRACTOR REQUIREMENTS
 
 
Tractor Hydraulic Circuit Requirements 
 
Circuit #1 
Shank Lift/Lower
(intermittent)
 
<40’ (12.2 m) Flow Rate 
2-3 gal-US/min
 
40’+ (12.2 m) 
Flow Rate
3-4 gal-US/min
 
 
Circuit #2 
Hydraulic Manifold
(continuous)
 
Model: SH Tool Bar 
Flow Rate
3-4 gal-US/min (11.3-18.9 L/min)
Rear Steering (option)
3 gal-US/min (11.3 L/min)
SBR Hitch 2-3 gal-US/min 
Low Pressure Tank Line(s) Tractor Reservoir 3-5 gal-US/min (11.3-18.9 
L/min) 
 
IMPORTANT! The low pressure return must 
enter tractor reservoir directly. 
 
 
 
 
 
 
 
 
