Jeep Grand Cherokee

1993-1999 of release

Repair and car operation



Jeep Grandee Cheroki
+ Jeep Grand Cherokee brand Cars
+ Settings and routine maintenance
+ Ryadny six-cylinder engine
+ V8 Engine
+ Procedures of the general and major maintenance of the engine
+ Systems of cooling, heating and air conditioning
+ the Power supply system and production of the fulfilled gases
+ System of electric equipment of the engine
+ Systems of decrease in toxicity of the fulfilled gases and engine management
+ Manual box of gear shifting
- Automatic transmission
   General information
   Diagnostics of malfunctions - the general information
   Removal and installation of the lever of switching
   Check of a condition and adjustment of a cable of switching
   The description, replacement and adjustment of a cable of a drive of a butterfly valve in a mode kik-Down (TV cable)
   Serviceability check, adjustment and replacement of the sensor switch of permission of start
   Adjustment of a cable of a lay blokirator
   Check of a condition and replacement of a support of transmission
   Epiploon replacement
   Design description, removal and installation of lines and hoses of cooling of transmission
   Removal and installation of an additional cooler
   Removal and installation of automatic transmission
   Replacement of the module of management with transmission (TSM) (only for AW-4 and 42RЕ)
   Diagnostics of system of electronic control by automatic transmission
+ Transfer case
+ Coupling and transmission line
+ Brake system
+ Suspension bracket and steering
+ Body
+ System of onboard electric equipment
+ Governing bodies and operation receptions
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Diagnostics of malfunctions - the general information

Refusals of AT can occur for five main reasons which treat bad overall performance of the engine, violation of adjustments, malfunction of hydraulics, the mechanical reasons or failure of a control system (processor). Diagnostics of all problems connected with AT should begin with check of most easily eliminated reasons, as that: level and condition of transmission liquid (Head of Control and routine maintenance), adjustment of draft of gear shifting and adjustment of draft of change of provision of a butterfly valve. Further it is necessary to carry out trial runs for the purpose of check of elimination of a problem during the previous corrections. If to debug nevertheless it was not possible, further, fuller, it is necessary to leave diagnostics of AT to experts. See also Section Diagnostics of malfunctions at the beginning of this Management.

Primary checks

 PERFORMANCE ORDER

  1. During a trip warm up transmission to normal working temperature.
  2. Check level of transmission liquid (Head of Control and routine maintenance):
    • If level of liquid is unusually small, add its necessary quantity (on measuring щупу), then check transmission on existence of signs of external leaks.
    • If liquid level, on the contrary, is excessively high, check the merged surplus on existence of signs of pollution by a cooler. Presence at transmission liquid of a cooler of the engine is a sign of damage of internal walls of the radiator separating tanks, filled with transmission liquid from the main cavity of a radiator (The head of System of cooling, heating and air conditioning).
    • If liquid foaming takes place, merge it and replace, then check the merged liquid on cooler hit in it. Check level of filling of transmission.
  3. Check turns of idling of the engine.

If engine failures take place, it is not necessary to start performance of primary checks before complete elimination of their reasons.

  1. Check freedom of a course of draft of a drive of change of provision of a butterfly valve in a mode kik-Down. In case of need make adjustment (The section Description, replacement and adjustment of a cable of a drive of a butterfly valve in a mode kik-Down (TV cable)).

Draft of a drive of a zaslonka in a mode kik-Down can normally function at the switched-off and cold engine, however to give refusal after its warming up. Check functioning of draft both at cold, and at the engine warmed up to normal working temperature.

  1. Check functioning of draft of a drive of gear shifting (The section Check of a condition and adjustment of a cable of switching). Make sure of correctness of adjustment and smoothness of a course of draft.

Check of leakages of transmission liquid

The most part of leakages of transmission liquid can be revealed by a visual way. Repair usually consists in epiploon or laying replacement. If to find a source of leak it is not possible, performance offered below procedure can help.

 PERFORMANCE ORDER

  1. Identify liquid. Make sure that traces of transmission liquid, instead of impellent oil or brake liquid (AT liquid has dark red coloring) are found.
  2. Try to establish a leak source. Make on the car a short trip (of some km), then park it, having stopped over the leaf of a cardboard outspread on the earth. Some minutes later the source of leak can be established on drops falling on a cardboard.
  3. Carefully examine a suspected component and a surface directly round it. Special attention give to surfaces interfaced through laying. Often useful at visual survey there is an application of a small pocket mirror.
  4. If the leak source on former does not manage to be revealed, carefully clear a suspected surface with application of an obezzhirivatel or solvent, then dry it.
  5. Again make a short trip for transmission warming up to normal working temperature, banishing transmission during it through provisions of all transfers. After a stop again make visual survey of the suspect of a component.
  6. After the source of leak is established, it is necessary to find out and eliminate the reason of its emergence. If to replace laying, having left a flange deformed, leak in the near future will arise again. The bent flanges should be obligatory отрихтованы.
  7. Before starting elimination of the reason of leak make sure of performance listed below conditions as their default can lead to fast renewal of leaks.

Some from listed below conditions cannot be executed without use of special tools and carrying out thorough deep examination. It is necessary to leave elimination of such problems to specialists of dealer office or a car-care center workshop.

Leaks through defective laying

Regularly make external survey of the pallet of a case of transmission. Check existence and reliability of a tightening of bolts, a condition of laying and absence of deformations of the pallet (existence on the pallet of dents can be a sign of damage of the case of the valve which was in it).

Excessive increase of level and/or pressure of transmission liquid can be the reason of emergence of leakages of liquid through laying of the pallet of a case. It can appear the ventilating tube is corked, bolts of fastening of the pallet can be drawn, the probability of deformation of a flange of the pallet or damage of a surface of a case of transmission interfaced to it is not excluded. Leak can be a consequence of damage of the laying or formation of cracks or cavities to case molding. If laying was created from hermetic, hermetic not that grade was quite probably used.

Leaks through epiploons

The reason of emergence of leaks through an epiploon excessive level or pressure of liquid or ventilation obstruction also can be. Damage of a contact surface of a nest of an epiploon or a shaft passing through an epiploon is not excluded, it can appear is damaged or incorrectly the epiploon is established also. Weakening of the bearing can lead to emergence of excessive fight of a shaft that also leads to emergence of leaks through an epiploon.

Make sure that sealing laying of a tube measuring щупа is in a satisfactory condition, and the tube correctly is planted in a case. Regularly check a surface around an arrangement of a driving gear wheel or the speedometer sensor on existence of signs of leaks. In the presence of traces of transmission liquid, check a condition of a sealing ring.

Leaks through a case

If there are signs of leaks through actually case of transmission, probably in its molding there were cavities or cracks. The case should be repaired or replaced.

Make sure that shtutserny connections of okhladitelny hoses are in a satisfactory condition and are reliably tightened.

Liquid follows through a ventilating tube or a tube of a jellied mouth

If it occurs, transmission is overflowed and it is possible to speak about hit in cooler liquid, existence of cavities in boat molding, the wrong landing measuring щупа, obstruction of a ventilating tube or returnable drain openings.