3 tractor requirements, 2 tire pressure – Seed Hawk TOOLBAR 2010 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. 
 
Tire Size
Description
PSI Rating
480 x 400 x 8
Packer Tire
20 PSI
11 L 15
Wing Tire (Front and Rear)
36 PSI
12.5 L 15
Main Frame Castor Tire (Front)
44 PSI
19.0 / 45 x 17
Front Main Frame Castor
58 PSI
500 / 45 x 22.5
Rear Axle Tire
52 PSI
30.5 L 32 SAT (Single)
Rear Axle Tire
26 PSI
30.5 L 32 SAT (Inner
Dual)
Rear Axle Tire
26 PSI
30.5 L 32 SAT (Outer
Dual)
Rear Axle Tire
16 PSI
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. 
