Between the tractor’s engine and the gearbox, there is a key component that can be used to separate the power from the engine crankshaft to realize the tractor’s parking and shifting. This is the protagonist of our article today: the tractor clutch, the overload protection function of the tractor clutch, can Make the starting of the tractor more stable.
As we all know, the clutch transmits torque by friction. The longer it is used, the more serious the friction damage will be. However, in the normal use of the tractor, the use of the tractor clutch is very frequent. If you do not pay attention to the tractor clutch repair, once the parts are worn out , resulting in the inability to transmit torque reliably, which will affect the normal use of the tractor. Therefore, we need to regularly troubleshoot the tractor clutch and deal with possible problems in a timely manner. Here, we will briefly talk about the tractor. When the clutch is repaired, the maintenance points of each component.
1. Maintenance of tractor clutch drive plate
The active disc of the tractor clutch, including the clutch pressure plate and the intermediate pressure plate, many manufacturers will use high-quality gray cast iron or ductile iron as the main raw material for these parts. The main damages of the active disc are mostly wear, scratches, burns and cracks on the friction surface; warpage and deformation of the friction surface; breakage of the lugs of the very engaging clutch, and increase of the bearing clearance due to wear; The pin fit gap is loose due to wear, the clutch cover is deformed or cracked, and the window hole is worn.
When the tractor clutch is repaired, the detection of the damage of the active disc is mainly based on visual inspection. The maintenance of the active disc mainly includes the following two points:
(1) If the clutch pressure plate has cracks, defects, or the thickness after grinding is smaller than the limit size, it should be replaced with new parts in time. If there are problems such as ablation, cracking or wear groove depth exceeding 0.5 mm on the surface, or when the plane tolerance exceeds the service limit, the clutch pressure plate can still be used after being smoothed by polishing.
(2) When the matching clearance between the driving disc and the transmission pin is greater than 1.00-1.50 mm, it should be repaired in time.
2.the maintenance of the tractor clutch driven plate
When it comes to the parts that are more prone to damage in the tractor clutch, we have to mention the driven disc. The main damages of the driven disc are: wear, hardening, burns, cracks on the surface of the friction plate, oil stains on the surface (dry type), loose friction plate, warping and deformation of the driven disc, fracture of the steel plate, riveting between the steel plate and the hub Looseness, spline hole wear, etc.
When the tractor clutch is repaired, the main content of the driven disc repair is the correction of the steel plate and the replacement of the friction lining. When the wear of the spline hub exceeds the limit, it is recommended to replace the new parts directly, and there is no need to repair it. When the driven disc steel sheet is warped and deformed, it can be repaired by cold pressing. After calibration, the perpendicularity between the plane of the driven disc steel sheet and its axis shall meet the requirements. When the steel sheet is broken, it should be replaced with a new one. After the steel sheet is overhauled, replace the friction lining with a new one.
3. Maintenance of tractor clutch cover
The failure of the clutch cover is mainly reflected in that the clutch cover is deformed or cracked due to the uneven strength of the pressure plate spring, or improper installation, loose bolts in use, etc. Once the clutch cover has cracks, it should be welded and repaired in time; if it is deformed, the clutch cover can be placed on a flat plate for inspection. When the flatness error exceeds 0.5 mm, it should be repaired.
4. Damage and maintenance of tractor clutch shaft
The main failure of the clutch shaft is reflected in the damage of the spline, the wear of the sliding journal and the journal wear of the bearing, and the bending of the shaft. After the splines are worn, check the backlash on the spline shaft with a standard spline sleeve or a new driven disc hub. When the backlash is greater than 0.8 mm, a new shaft should generally be replaced.
The above content is an introduction to the relevant points of tractor clutch repair. If you need to know more about tractor clutch repair, you are welcome to log in to our official website to browse, or contact our customer service.
