You are lucky when you have a John Deere because it is one of the few original conventional combines. For the mixed farmer, this machine holds special interest because baling straw is a necessity on most farms using livestock. Let us look at the parts of the John Deere 9600 concave one by one to see what one has to do to get the best result during harvest.
Cylinder and Concave
Good threshing and good flow are essential in the harvesting operation. Many key concepts of the John Deere 9600 concave involve in this including:
1. Concave - For the concave, the tolerance limit is 5 mm. This is the most you must set. When the rub bars and concaves remain worn out, the full slack becomes double. Use a wide wire concave with filler bars because it will suit all crops. Seed recovery is good. At the back of the concave, set the tolerance to near zero. The front opening depends on what you are harvesting.
2. Feeder house - Good flow gets inhibited by a worn-out floor and a feeder chain not adjusted well. Wear of the John Deere 9600 concave increases a lot when the sprockets and feeder chains remain excessively worn. Take care when you replace the chain or sprockets.
3. Walkers and rear beaters - Inspect the rear beater vanes and replace worn and damaged ones. The straw walkers do not go wrong, but when it happens, things become unbearable. Check the bushings and cranks because if you find them worn, the walkers will pound causing them to break. To check the condition, go under the walkers and push them up. There has to be some play so if there isn't, adjust them to get the needed play. The bushings and cranks might need replacement.
4. Headers and pickups: In the John Deere 9600 concave, durability and full function are fantastic. Make sure the auger flighting is in an excellent condition in the header. There is a stripper bar behind the auger; make sure it is alright. Adjust the setting so that it remains close to the auger flighting but not touching it.
5. Engine - It is the heart of the combine. Make sure you use good quality fuel and clean the fuel filters often. Clean the fuel injection system and service it often.
6. Straw chopper - There are two blades here in the John Deere 9600 concave, one stationary and the other, rotating. You need 15-30 horsepower to drive it. If they are in excellent condition, you need less power to run them.
In conventional combines, the efficiency increases when they are almost full. The threshing happens when grain rubs against grain. If there isn't enough grain, the threshing will be poor. The grain sample is dirty and lots of un-threshed heads. If you encounter this condition, the answer is to increase the speed. You want to keep the rub bars and concave as close together as possible for cereals (hard to thresh) and wider for easy to thresh oil seeds, small grains, and pulses. Start with the factory settings and adjust them as you go along.