2022.3-0000010 OM Oil leakage through the cups
Disconnect the tractor in order to detach from clutch coupling case and replace cups
7.4 Possible failures in the electronic control system for rear axle differential lock, front driving axle drive, front power take off shaft, GB reduction gear and instructions for their troubleshooting The list of possible failures in the electronic system for rear axle DL, FDA drive, FPTO (if mounted), GB reduction gear (if mounted) and instructions for their troubleshooting are shown in Table 7.4. Table 7.4 Failure, Troubleshooting external manifestation, cause FDA drive or rear axle DL can not be engaged in the forced mode, or GB reduction unit can not be shifted to the higher pass, FPTO drive can not be engaged Power supply voltage is not trans- Check according to the electric circuit diagram ferred to the respective distribution (Annex ) if the power supply voltage is transferred to the respective distribution valve solenoid valve solenoid Jamming of the respective distribu- Rinse the distribution valve tion valve spool None of the drives (FDA, rear axle DL, FPTO) can be engaged and GB reduction unit can not be shifted to the high gear There is no pressure in the trans- Eliminate the failure in the transmission hydraulic mission hydraulic system system When the front PTO drive is engaged, indicating lamp lights up but the PTO shaft end extension fails to rotate Make sure that the cylinder pin is If the cylinder rod is moving, FPTO shaft electric moving while engagement control is operating in a proper manner Check the adjustment of FPTO Adjust if necessary brake band tightening Rear axle DL can not be engaged in an automated mode when guide wheels are in the forward motion position Big clearance between the bracket Adjust the clearance within 3±0,2 mm by rotating and the butt end of left or corre- nuts 6 and 7 as shown in figure 7.4.1 spondingly right sensors 3 of guide wheels turning angle Breakage in the electric “minus” Check electric circuits according to the electric circuit of power supply or in the connections diagram (Annex ). “signal” circuit of left or correspondingly right sensor of turning angle Left or correspondingly, right sensor of Replace faulty sensor turning angle is faulty Rear axle DL or FDA drive is constantly activated in the automatic mode (fail to get deactivated while guide wheels turning) Breakage in the “plus” circuit of Check “plus” circuit of sensor power supply accordpower supply of left or correspond- ing to the electric connections diagram (Annex ) ingly right sensor of turning angle While tractor slowing down (depressing both brake pedals simultaneously), FDA drive can not be engaged and rear axle DL can not be disengaged (depressing either of the brake pedals) Faulty one or both brake actuation Simulate sensor actuation one-by-one by means of sensors 12-21 (actuation of contact closure in cable sockets to the sensors. Replace the faulty sensor brake pedals) Cable of connection to sensors Check the cable for operability according to the 304
