Common trouble shooting ,reason and deal with the Sionteng wheel loader Driving Axle.
Common troubles of axle: abnormal noise of the main drive differential, damage of the main drive bearing, damage of the main driven spiral bevel gear, oil leakage, overheat, damage of the wheel hull bearing, damage of the wheel planetary reduction gear, crack of the axle welding seam or fracture of the axle housing when the circumstance is severe, etc.
(1) Abnormal noise of the main drive differential
The abnormal noise is produced because the clearance between the driving and driven spiral bevel gears is abnormal, and the meshing plane is unstable. The gear meshing clearance refers to the clearance among the driving and driven spiral bevel gears, the bevel gear, the axle shaft gear, the axle shaft gear key and the half axle spline tooth. Due to abrasion or gear tooth damage and bearing loosening, the normal meshing place and normal meshing clearance are damaged, thus the noise will be produced due to collision and abrasion during running.
(2) Oil leakage
Main causes of oil leakage:
A. Oil seal abrasion, improper assembly or damage;
B. Shaft ends abrasion and excessive spline abrasion;
C. Blockage of the ventilating valve on the axle;
D. Casting defects (sand blisters and pores) or cracks on the casing, uneven junction plane, damaged gasket and loosened fastening blot;
E. The lubricating oil is excessively filled into the axle housing and leaks because the oil drainage screw plug is not screwed down.
(3) Overheat
After the loader runs for a certain mileage, the oil temperature of the axle housing
and the temperature at the main driving flange shall not exceed 90℃. Generally, the
main reducer housing can be touched by hand. If the hand has unendurable burning
feeling when touching, it is called overheat. The heat can be measured with the
thermometer with a contact. The causes of overheat are excessively small bearing
meshing clearance and lack of the lubricating oil. When the bearing part is touched by
hand, and the hand can endure but can not stay for a long time, it shows that the
temperature is excessively high, and the bearing assembly is over tight and shall be
readjusted.
(4) Other troubles
A. Curving and cracks of the axles housing. The main causes are that the loader operates under the long-term overload condition, and is not decelerated on the rough road to cause the axles under the large impact vibration and metal fatigue damage.
B. Damage of the main driving bearing. The main causes are that firstly, the lubricating oil is insufficient or the lubricating oil duct is not smooth to cause the bearing lubricating condition to be worse and burn; secondly, the bearing clearance becomes large, and abrasion happens in advance to cause damage because of long-term heavy load operation.
C. Damage of the wheel hull bearing. The main causes are that the taper roller bearing operates under the long-term heavy load to cause the ends to be abraded excessively ad the bearing clearance to be larger.
D. Break-off of the half axle. When the loader is highly loaded on the rugged ground, the bearing torque of all parts is extremely high. If the axles jumps up and down, the engine acts on the main drive differential suddenly, and the action force is transferred to the half axle for an instant, and the stress on the half axle is extremely high to cause break-off.