Seed Hawk AIRCART 2014 - Manual (Page 38)

SEED HAWK ® 2014 AIRCART OPERATOR’S MANUAL SEED HAWK ® 2014 AIRCART OPERATOR’S MANUAL 68 69
8.0 Hydraulic Drive
8.1 Roller Changing Procedure
All 2014 Aircarts are equipped with hydraulically driven meters. These motors
have a maximum speed of 113 rpm and a minimum speed of 2 rpm. Speeds in
excess of the maximum may result in premature wear or failure of the motors.
Reducing the rotational speeds of the motor below 2 rpm may result in erratic
metering which may affect the seeding rate.
Each hydraulic motor requires a flow rate of 1.0 gal/min (3.8 L/min). The max-
imum torque output is 26 ft-lbs (35.3 N•m). The maximum inlet pressure of
the hydraulic motors is 1500 psi. The inlet pressure is regulated by a pressure
reducing valve which will be discussed in Section 8.2.
1. Remove the two flange nuts hold-
ing the hydraulic motor mount to
the meter body, the lynch pin on the
roller shaft and the hydraulic motor
spacer.
2. Slide the hydraulic motor mount
assembly off of the roller spindle, and
remove the spur gear from the agita-
tor shaft (also fastened by a lynch pin)
3. The roller is now free to be slid
out for the replacement of a roller
section or an entirely new roller
4. To re-install the hydraulic drive assembly, simply repeat the steps in reverse.
Mount the agitator spur gear. Replace the hydraulic motor and hydraulic motor
mount. Tighten the flange nuts back onto the meter body. Replace hydraulic
motor spacer and lynch pin onto roller shaft.
NOTE: If the tanks contain
product ensure to shut the
gates before changing the
meter roller.
NOTE: Installing a roller is
often easier with the front
cleanout door removed. This
reduces the chance of the
roller binding on any residual
product that remains below
the product gates after they
have been shut.