Attention! The main reasons for the abnormal operation of the transmission can be a malfunction of the engine (power loss), incorrect adjustments, failures of the hydraulic transmission system, mechanical drive and processor control system. First of all, you should check the level and condition of the fluid, adjust the traction. If these measures do not lead to a positive result, then you should contact a car service.
Preliminary checks
1. Check fluid level and condition. If the level is above normal, then check for contamination with coolant, which may have entered due to a leak in the radiator. If foaminess is found, replace the fluid.
2. Check engine idle speed. If necessary, repair and adjust, as further verification of the transmission does not make sense.
3. Check the operation of the mechanical transmission drive.
Fluid Leak Status Check
1. Liquid leakage is easily identified by a dark red color and is eliminated by replacing seals or gaskets. To detect a noticeable leak, park your vehicle after driving a few miles over a blank sheet of cardboard or paper. After about 2 min. leak can be found. If the leak is weak, then carefully clean the crankcase and check the seals after the trip.
2. If the leak is located, then determine the cause of the leak and how to fix it (for example, replacing the gasket cannot eliminate the leak if the split planes are deformed).
3. Before repairing a leak, analyze the causes of the leak and determine the nature of the repair work, since many types of repairs cannot be performed independently.
Leakage from under the gasket may be the result of an increase in pressure or liquid level due to clogging of the ventilation holes, deformation of the pan or its split plane, inconsistency of the used sealant brand with the recommended one, and defects in the casting of the pan. Check periodically the tightness of the seal of the pointer pipe and the speedometer gearbox.
Packing leaks can be caused by high pressure or liquid levels due to clogged vents, improper packing, damaged shaft journals, or worn shaft bearings.
The crankcase leak is due to casting defects. Check that the fluid cooler hoses are secure.
A leak from the breather indicates transmission overflow, coolant ingress, porous crankcase material, incorrect pointer position, clogged ventilation and drainage channels.