Deep tillage plough pre-season maintenance and pre-start checklist

Use the following checklist as part of the pre-season checks on your deep ripper to make sure you're machine is ready to go and to minimise downtime from faults

This article provides some basic information on pre-season and daily checks needed to keep deep rippers in optimal working conditions. The information assumes the plough is using the #9 Shank Assembly, however, the basic information is applicable to all ploughs in the Agrowplow range. More detailed information is available in the plough operators manual

Refer to your parts manual for part numbers if you are using a plough with a different undercarriage assembly. 

 

Cracks in the swing arms and shank carriers

hydraulic shank swing arm and carrier

Visually check the swing arms and shank carriers for cracks as part of your daily pre-start checks or after hitting a rock reef. 

Order replacement swing arms and shank carriers as necessary. 

 

Wear on the blades and shinguards

Visually check the blades and shinguards for signs on wear. Check all the tungsten teeth are still present, that the tungsten grit has not worn away from the top, sides, or bottom of the blade, and that the blade body or shinguards has not been worn down. 

Re-apply tungsten grit if the body of the blade or shinguard has not been worn. Otherwise, order replacement blades or shinguards

 

Lift cylinders are phased

Fully lift and lower the wheel arms, then hold on relief for 2-3 seconds. Repeat this process 3 times to phase all the wheel lift cylinders. This should be done as part of your pre-start check. 

Lif the plough to maximum height at the end of each row to maintain maximum phasing. 

 

Shank carrier mounting bolts

Use a 30mm socket wrench to check all the bolts are properly secured. This should be done once a week or whenever a bolt is replaced. Refer to the torque guide in your operator's manual (page 36) for more information.

 

Air in the hydraulics

purge hydraulic air test

Lower the hydraulic pre-charge to 0PSI and lean with your body weight on the shanks. The shanks should be tight and not break back when you apply your weight. Lower the hydraulic pre-charge to 0PSI and lean with your body weight on the shanks. The shanks should be tight and not break back when you apply your weight.

This should be done as part of your pre-start checks and periodically though the day as the pressure will change significantly with ambient temperature.

See how to purge air in the hydraulics if your shanks break back when you apply your body weight to them. 

 

Hydraulic cylinder gland cap is secure

Visually inspect the cylinder gland caps to make sure the tack weld on the cap is present and secures the cap as part of your pre-start checks. 

 

Hydraulic pressure

Visually inspect the pressure gauge throughout the working day to ensure the pressure is within acceptable limits. 

Note: the following values are for the #9 Hydraulics Shank working in a reasonably clean country. See Hydraulic Shank Operational Limits in the operator's manual for more information.

Accumulator pre-charge Minimum pressure Maximum pressure
115 bar (1660 psi) 125 bar (1800 psi) 150 bar (2200 psi)
140 bar (2030 psi) 145 bar (2100 psi) 165 bar (2400 psi)

 

Nitrogen bottles are charged

Pre-charge the hydraulic system to above the pre-charge pressure in the accumulator. Then slowly release pressure from the system and watch the gauge for when it changes speed.

See Accumulator Pre-Charge Pressure and Testing in the operators manual (page 30) for more information.