Infringements in transmission work can be caused following reasons:
– Poor-quality adjustment of the engine;
– Poor-quality adjustment of a transmission;
– Malfunctions in hydraulic system of a transmission;
– Malfunctions in mechanical system of a transmission;
– Malfunctions in the computer or its electric chain.
First of all check up level and an oil condition in a transmission and adjustment of draughts, and on models till 2001 — adjustment of draught of management throttle заслонкой.
The preliminary control
Make a short trip for transmission warming up.
Check up level трансмиссионной liquids in a transmission.
If level of a liquid below demanded, add a liquid in a transmission and check up absence of external leaks of a liquid.
If liquid level it is considerable above demanded, merge a superfluous liquid and check up, whether there is at it a cooling liquid. Presence in трансмиссионной liquids of a cooling liquid testifies that there was a destruction of internal walls of a radiator which divide трансмиссионную and cooling liquids.
If трансмиссионная the liquid is made foam, merge it and fill in a fresh liquid.
Check up frequency of rotation of the engine idling. If the engine works unstably, before performance of the further checks adjust the engine.
Check up freedom of moving of a cable of an accelerator, if necessary adjust.
Check up work of the mechanism of a choice of transfers.
Be convinced that there are no leaks in installation sites of linings and sealing rings in a transmission.
The smell of burnt oil is a pollution sign its small particles as a result of deterioration of frictional overlays of elements of management of an automatic transmission. It should guard you as, probably, transmission major repairs is required.
If oil level in an automatic transmission below normal in the oil pump air will start to arrive that leads to formation of oil foam. It in turn will cause decrease in working pressure in a control system, проскальзывание frictional elements of management of a transmission and a gear change delay.
If level of oil more normal as a result of rotation of gear wheels of planetary mechanisms plentiful foaming also will begin that leads to the same consequences, as well as in case of low level of oil.
Formation of a mix of air with oil finally will cause an overheat and oil oxidation that will negatively affect work of valves and frictional elements of management. Besides, foaming becomes the reason of the raised emission of oil through сапун that can be wrongly accepted for leaks of oil from system.
Diagnostics of leaks трансмиссионной liquids
The place of leaks трансмиссионной is easy for defining liquids visually. Repair usually consists in replacement of linings, sealing rings and cuffs.
If the leak place is difficult for finding out, execute following actions:
– Identify a liquid. At first be convinced that there is a leak трансмиссионной liquids, instead of engine oil or a cooling liquid. The transmissionnaja liquid has dark red colour;
– Make a short trip, then stop the car over the big sheet of a cardboard. In some minutes on the drops which have fallen to a cardboard, define a leak place;
– Inspect a place of prospective leak, paying special attention on linings. For simplification of search in hard-to-reach spots use a mirror;
– If leak is not found out, clear a prospective place solvent and dry up it;
– Make a trip before transmission warming up on various modes with a gear change, then repeated survey define a place of leak of a liquid.
After definition of a place of leak define and eliminate its reason. If lining replacement, but привалочная a surface on which the lining is established is made, deformed or has teases only replacement of a lining will not give positive result. It is necessary to level or smooth out preliminary привалочную a surface.