Automatic transemissions 3

Replacement process трансмиссионной liquids and an estimation of degree of its deterioration are not absolutely simple, but, if to use our recommendations, can be executed independently. Certainly, it is possible to be limited and well-known, primitive way which consists only in a reversing of a drain stopper and its returning to the place after отекания liquids, but we urgently recommend through each 3000 km of run for replacement трансмиссионной liquids to use the following technology:

1. To organise an easy approach to the transmission pallet, having tired out the car on a platform or having lifted a jack (having provided, of course, the safety).

2. To turn out a drain stopper and to merge трансмиссионную a liquid.

3. To wrap a drain stopper into place and, without applying the big efforts, to tighten it.

4. To turn out all bolts located on perimetre of the oil pallet of a transmission, and it is accurate not to damage a lining, to separate the pallet from the transmission case. Without merging the liquid rests, to clean it aside for the analysis.

5. To find on the bottom part of a surface клапанной boxes the filter for трансмиссионной liquids, to remove it for washing and the analysis of products of the deterioration which has collected in it. The filter represents the metal grid concluded in the steel case.

6. To carry out the analysis of products of the deterioration which is in the filter and the pallet. Deterioration products can consist of a steel, brass and aluminium shaving, black lamellar чешуек and a large plastic shaving. The aluminium and brass shaving results from deterioration of bearings of sliding. At normal degree of deterioration it appears in the form of a grey touch on an internal surface of the pallet, the filter case, magnets and is present in трансмиссионной liquids in the form of very small suspension. The steel shaving arises from deterioration of steel bearings качения, shaft, gear wheels, etc. In norm it can be present only at very scanty quantities, as the product which has remained still since extra earnings of knots in a transmission. Большее its quantity testifies to an emergency condition of the automatic machine. Presence of a great number of black lamellar particles speaks about the beginning of process of fast deterioration of frictional disks, after some time inevitably conducting to breakage. As presence of a large plastic shaving which arises in connection with failure of various gear wheels and the bearings of sliding made of polymeric materials is inadmissible. While in service deterioration products hammer in apertures in сеточке the filter and sharply reduce receipt трансмиссионной liquids, as a result transmission necessarily fails.

7. To wash out in kerosene gasoline or other liquid the pallet and сеточку the filter. For removal of products of deterioration it is possible to use compressed air from the compressor or the pump. In this case it is not recommended to use rags, as it leaves pile on a surface of wiped details. Washed off трансмиссионной a liquid, it corks the filter. If the case of the pallet or the filter is bent, and throughput on a liquid is reduced, it also can lead to automatic machine breakage, therefore it is necessary to try to give them an initial condition or to replace. The cleared magnets come back in the transmission pallet.

8. The washed out filter трансмиссионной liquids is established on the place and carefully drawn by fixing bolts.

9. The prepared pallet together with magnets and a lining needs to be established on a regular place. If the lining is damaged, its surface is recommended to be processed hermetic. The effort of an inhaling of bolts should not be very great, as it can lead to lining damage and then the liquid leak is inevitable.

10. Pouring трансмиссионной liquids in a transmission is carried out through mine щупа. Level should correspond to the labels specified on щупе. At the moment of gauging the car engine should work, and the lever of a choice of a mode of movement is necessary for establishing in position "N" this results from the fact that in this position to all rubbing details greasing moves and are filled all обвоздушенные transmission cavities. The volume of updated oil fluctuates in limits from three to five litres depending on make of the car.

For earlier and more exact definition of malfunction there are some operations and verifying tests. However we urgently recommend not to abuse them and, in order to avoid breakages, to observe security measures.

The most simple is "the time lag Test".

In an engine operating time, idling, at installation of the lever of a choice of a mode of movement in position "D" or "R" from a neutral position before operation will be felt, there should be a time lag. The purpose of carrying out of the given test is check of working capacity of knots and transmission mechanisms. With a view of safety and prevention of breakages it is necessary:

- Before test carrying out it is good to warm up a transmission, the temperature of automatic transmission should make not less than 50 - 80°С;

- For quality achievement of check it is necessary to make not less than three measurements and to define their average size;

- For preservation of high working capacity of an automatic transmission between measurements minute breaks necessarily should become.

"The time lag test" is spent as follows:

1. Completely extend the lever of a manual brake.

2. Start the engine.

3. Check up frequency of rotation of the engine idling in a range "N".

For example, frequency of single turns for the engine 3S-F should make 800 rpm, for 3S-FE to be in limits from 700 to 750 rpm, and for the engine 4A-F to correspond 800 - 900 rpm. If single turns of the engine do not correspond to norm results of measurement too will be incorrect, and the test should be repeated.

4. Translate the lever of a choice of a mode of movement from a position "N" in a range "D".

5. Using a stop watch, measure time from the beginning of movement of the handle till the moment of operation of transmission. Measurements are recommended to be spent not less than three times and to define their average value. In this case the time lag should make no more than 1,2 seconds.

6. Using the same way, spend measurements at switching from a range "N" in "R". In this case the time lag should not exceed 1,5 seconds.

Estimating results of the spent test, you should recognise that in the presence of any breakage operation time can increase only. To find out the reason and eliminate malfunction the professional can only. Therefore you should address urgently in the corresponding service enterprise.

Also "the Lay test" is simple enough. Its purpose - check of working qualities of the engine, the hydrotransformer and a transmission as a whole.

For safety and an exception of breakages it is necessary:

- To carry out the test for light enough and wide site;

- The test should be spent by two masters working in steam: one of them should observe of wheels or their stoppers and immediately warn about a procollar of wheels or moving of stoppers whereas the second master conducts tests and writes down measurements;

- Duration of carrying out of the test should not exceed five seconds.

Carrying out of the test and estimation of its results:

1. Necessarily fix forward and back wheels.

2. If it is necessary, establish a tachometre.

3. Completely extend the lever of a parking brake.

4. Press on a pedal of a brake the left foot and keep it in this position during all test.

5. Get the engine.

6. Establish the lever of a choice of a mode of movement in a range "D".

7. Pressing a pedal of gas the right foot against the stop, measure tachometre indications.

8. Make a break lasting not less than one minute.

Repeat the test, having established the lever of a choice of a mode of movement in a range "R".

At an estimation of this test it is necessary to know that by each pressing of a pedal of gas of the marksman of a tachometre should rise and stop smoothly on certain turns. For example, for engines 4A-F, 3S-F and 3S-FE frequency of turns should be in limits from 1950 to 2350 rpm. Thus there should be no extraneous noise, vibrations and blows, and the car should remain on a place.

If tachometre indications do not correspond to norm:

- It is less than face value, but are identical in both ranges ("D" and "R"), - more often the reason is concluded in insufficient capacity of the engine;

- Above face value in both ranges - the reason, most likely, is covered in malfunction of the hydrotransformer or a transmission;

- Above face value in one of ranges - it is the most probable that malfunction is concentrated only in a transmission.

Once again we pay your attention that at reception doubtful or negative (from listed above) result to you is better to address to experts.

It is the most difficult to spend and estimate "the Road test" which is spent for definition of presence of points of switching, detection of extraneous noise, vibrations and proslippings in a transmission.

For safety test carrying out should be carried out on wide enough, light, equal and empty site of road; before departure it is necessary to warm up the engine and a transmission well.

Carrying out of "the Road test" and its estimation:

1. Establish the lever of a choice of a mode of movement in position "D" and, gradually pressing a gas pedal, check up presence switching 1 - 2, 2 - 3 and 3 - 4 (after button pressing "0/D"). If is not present any of switching the automatic transmission or its knot of management and control is faulty;

If the switching moments are tightened, the throttle rope (about its check and adjustment we will talk later) is incorrectly adjusted.

2. Fix speed of 70 km/hour in a mode "D" on transfer "0/D" and carry out small pressing a gas pedal. Engine turns should not change sharply. If on a tachometre sharp jump of turns of the engine it is possible to assert is observed that breakage is in the hydrotransformer, and it soon completely will fail.

3. Stop and translate the lever of a choice of a mode of movement in a range "2". Gradually pressing a gas pedal, check up presence of switching 1 - 2. Moving on the second transfer.отпустите a pedal of an accelerator also pay attention to presence of braking by the engine. Having repeated some times this operation, make sure that switchings 1 - 2, 2 - 1 are not accompanied by vibration, blows or проскальзыванием. If the negative phenomena are not present, the box is in a good condition.

4. Completely stop and, having moved the lever to position "L", smoothly pressing a gas pedal, be convinced of absence of switching on the second step, and also check up presence of braking by the engine at отпускании gas pedals. By repeated pressing and отпускании gas pedals listen to work of a transmission for revealing of extraneous noise and vibrations. If there is a switching on the second step or not braking by the engine the management and control knot is faulty.

5. Stop and, having switched in a range "R", sharply press a gas pedal. Having convinced of absence of proslippings, vibrations and extraneous noise, continue testing.

6. Having established the car on an inclined site, with a bias nearby 5 °, move the lever of a choice of a mode of movement to position "Р" and отпуститe a brake. The car should be fixed on a place; if the car rolls down, it is necessary to search for the reason in malfunction of the mechanism of a parking of the automatic machine.

We remind that at test carrying out it is necessary to pay special attention on presence of extraneous noise and vibrations. To concern them it is necessary with due responsibility as these noise and vibrations can be caused disbalance of the hydrotransformer, a leading shaft, etc. that can lead to emergency creation.

Important detail in management of the automatic machine - a throttle rope. It connects the mechanism of management and control of an automatic transmission to sector throttle заслонки the engine which is set in motion from a gas pedal. This detail also is the means reflecting desire of the driver. It represents the metal rope concluded in a plastic casing, rigidly fixed with both parties. At long operation the plastic casing dries up, is shortened and gets out of the seats as a result of change of its length. Management of the automatic machine becomes incorrect, and he answers the driver with incorrect actions. For elimination of this malfunction it is necessary to be convinced of absence of ruptures, places оплавления and sharp excesses, and having repaired seats of a plastic casing, anew it to adjust:

1. After repair to check up ease вытягивания, and the main thing, return of a throttle rope in a casing.

2. To weaken adjusting nuts.

3. Completely to press a pedal of gas and adjusting nuts to establish a rope in such position at which the stopper will leave a protective rubber casing no more than on millimetre.

4. Accurately to tighten adjusting nuts and only after that to release a gas pedal.

5. Repeatedly pressing a gas pedal, to check up quality of adjustment.

Having done all tests set forth above, it is possible to define precisely enough a condition of automatic transmission, earlier to reveal arising malfunctions and to eliminate them.