New Holland 640 is one of the most preferred tractors in the farming and agricultural industry since it has an exponential horsepower of 75HP and has four cylinders.
In addition, it has parallelogram suspension and a hydraulic power system, which improves efficiency. Moreover, it has exceptional position control, and the driver seat is fully upholstered.
There is a round baler in this tractor that helps pick crop from the ground and add it to the bale chamber. However, performance issues with this tractor’s round baler are pretty common, but there are various solutions that you can try!
New Holland 640 Round Baler Problems
- Clutch Issue
New Holland 640 users have complained that the belt and clutch start slipping after using the round baler for some time, and it’s caused by various reasons. First of all, you must inspect the bottom roller and make sure there is no wrapped crop or grass.
This is because grass or crop stuck to the roller can limit its performance and jams the entire system. So, if there is some grass on the roller, it’s recommended that you use a scraper to clear it off.
Secondly, you have to check between the gears to make sure there are no stones or pebbles stuck between them. This is because these small hindrances can lead to clutch failure.
So, inspect the gears, and if there are some pebbles or small stones, you will need to take them out and test the clutch again. If the clutch slips, it is damaged and should be replaced.
- Rotation Issues
If the round baler on your tractor has stopped working, it’s likely that something is stuck between the rollers or the belt is slipping.
So, begin by inspecting the rollers, and if you see some foreign objects, remove them to make sure the baler can rotate freely. However, if nothing is stuck, it’s recommended that you check the belt for slipping.
The belt usually slips because of loose joints or wrapped grass around the belt. For this reason, you should remove the grass or other crops if it’s stuck to the belt. In addition to this, if there are some loose joints, you must tighten them up.
Also, you must adjust the belt tension, especially if it is not connected to the clutch plate. You can use the nut on the clutch rod’s end to adjust the belt tension – you have to turn the nut in a clockwise direction. 3. Weak Teeth
Weak teeth can also lead to round baler issues, especially if you are worried about the efficiency of a baler. For this reason, if the teeth seem to be worn out, they must be replaced. However, you must hire a professional to replace the teeth as they can be sharp and cause an accident if you aren’t careful.
- Baler Is Not Working But PTO Is Turning
When the baler stops working even when the PTO is operating, you must check the sheer bolt. The sheer bolts are added to protect the driveline between the baler’s gearbox and tractor. If the sheer bolt is worn out, it should be replaced. However, if the bolt is loose, use a wrench to tighten it up.
Secondly, a slipping slip clutch is another reason why the baler fails to perform. In most cases, it makes a noise and starts producing a burning smell. In that case, the slip clutch has to be replaced and make sure there are no stuck bearings or chains and blockages that are causing the slippage.
- The Belt Are Not Spinning
The belt has to spin for the baler to work and pick up crops from the ground. However, if the baler is running, but the belt isn’t spinning, you need to check the tailgate.
This is because the tailgate is usually closed, but it has to be opened to ensure the baler works in sync with the belts. So, locate the tailgate and open it.
However, if opening the tailgate doesn’t work, you need to check the belt tension. You can consult the user manual to check the suitable belt tension to ensure the belts are running at the right tension level.
If the tension is more or less than the desired value, you have to tighten or loosen the belt (loosening the belt will reduce the tension, and tightening it will increase the tension).
On the other hand, if the belts seem damaged or worn out, you must replace them. This is because the worn-out or damaged belt will fail to grip.
- Bales Are Lopsided
Improper driving or windrows are the primary cause behind lopsided balers. The windrows are defined as the pickup width, and they should be distributed evenly.
In addition, the windrows weave back and forth to even the sides. However, if the windrows aren’t set properly, the balers will be lopsided. To fix this issue, you need to fill out the baler’s sides.
Secondly, you must check the belts because if some of the belts are loose or worn out, it will result in an uneven orientation of the baler. So, inspect the belts and make sure they are all the same length and aren’t worn out. In addition to this, if some belts are longer than the others, you should cut them.
- Loose Bales
There are three common reasons behind loose bales, including improper density, worn-out belts, and incorrect ground speed. First of all, you must consult the manual to see how you can set the correct density setting.
Secondly, if the belts are worn out, they won’t be able to make a tight bale, which means less crop will be imported to the chamber. So, if the belts are worn out, replace them and adjust their tension.
Last but not least, you should check the ground speed. In particular, the high ground speed can result in loose bales, and it also leads to constant clogging of the pickup head. So, it’s recommended that you reduce the ground speed and see if it resolves the issue.
- Twine Not Wrapping
If the round baler is unable to wrap the twine, the first step is to check the twine and make sure there is enough twine. In addition to this, you’ve to ensure that the twine is tracked properly. Secondly, you’ve to ensure that the twine isn’t wrapping around the drive shaft.
Lastly, many people don’t realize this, but they have to be particular about the twine’s size. This is because the thick twine might not fit properly. It’s recommended that you consult the user manual to determine the correct size of the twine to make sure it’s pulled into the baler chamber properly.
- Pickup Head Is Plugging
First of all, you must correct the ground speed because high ground speed is the most common reason behind constant clogging and plugging of the pickup head. Secondly, you must opt for smaller windrows.
Last but not least, the pickup head might plug when you use a bigger hitch pin to catch the crops. The hitch pin is used to connect the round baler and tractor, but you must use a smaller one. In addition, you must install a locking hitch pin to ensure the pin stays in place.
- Baler Is Sparking
If there is sparking in the baler, it’s recommended that you inspect the belts, bearings, and chains for wear and tear. If any of these parts are worn out, they must be replaced.
In addition to this, you’ve to ensure that the twine and net wrap aren’t wrapped around your tractor’s rollers as they have to be wrapped around the bales.
Secondly, you have to check the baler belts because the loose belts can slip on the rollers, which produces friction. The friction allows the loose material and dust particles to ignite in the chamber.
So, if the belts are loose, tighten them up. Last but not least, it’s recommended that you lubricate the gears and chains but make sure you use an air compressor to clear the dry matter, such as plant stems, dust, and leaves, before lubricating.