Mercedes W124

since 1985-1995 of release

Repair and car operation



W124 Mercedes
+ Governing bodies and control devices
+ MAINTENANCE
+ 2. Maintenance (diesel engines)
+ ENGINE
+ 4. Repair of 6-cylinder petrol SOHC engines
+ 5. Repair of 6-cylinder petrol DOHC engines
+ 6. Repair of the diesel engine established in the car
+ 7. Major maintenance of engines
+ COOLING SYSTEM
+ FUEL SYSTEM
+ 10. System of injection of BOSCH CIS-E fuel (KE-JETRONIC)
+ 11. System of injection of BOSCH HFM fuel
+ 12. Fuel system of diesel engines
+ 13. Fuel system of diesel engines
+ SYSTEMS OF START, IGNITION
+ 15. System of ignition of 4-cylinder petrol engines
+ 16. System of ignition of four-cylinder petrol engines
+ PRESTARTING HEATING
+ TRANSMISSION
+ 19. Mechanical transmission
+ 20. Automatic transmission
+ POWER SHAFTS
+ BRAKE SYSTEM
+ SUSPENSION BRACKET
+ BODY
+ ELECTRIC EQUIPMENT
- CHECK OF MALFUNCTIONS
   26.2. Cooling system
   26.3. Fuel and exhaust systems
   26.4. Coupling
   26.5. Mechanical transmission
   26.6. Automatic transmission
   26.7. Differential and driveshaft
   26.8. Brake system
   26.9. Suspension bracket and steering
   26.10. Electric equipment






26.6. Automatic transmission

GENERAL INFORMATION

Prevention

Because the transmission represents very difficult unit therefore it is difficult to diagnose and eliminate malfunction in a transmission. Do not remove a transmission from the car for repair before malfunction as the majority of tests demands that the transmission was in the car will not be professionally revealed.


Leakages of liquid

• Used transmission liquid of usually dark color therefore do not mix leakage of the engine oil which drops can get on a transmission with transmission liquid.
• For definition of a source of leakage of transmission liquid clear a transmission case of pollution, using special means or steam. Make a control trip on small distance on small speed so that in the presence of leaks from a transmission the stream of air did not take down transmission liquid from a leak place. Lift the car or establish it over a viewing hole and define a leak place. The most probable places of leakages of liquid:
and – an oil pan;
b–a pipe for щупа measurements of level of transmission liquid;
with – places of connection of pipes from the heat exchanger.

If transmission liquid has brown color or smells as ashes

• Transmission work with level of transmission liquid. Thus it is necessary to replace transmission liquid.

Indistinct choice of transfers

• Usually wrong choice of transfers is connected with the wrong adjustment of a cable of a choice of transfers. Also indistinct choice of transfers can be connected and with other problems:
and – start of the engine is made not in the position PARK or NEUTRAL of the lever of a choice of transfers,
b–on the display panel the established transfer is incorrectly highlighted;
with – movement of the car can occur in the position PARK or NEUTRAL of the lever of a choice of transfers;
d–unsystematic gear shifting.

The automatic transmission is not switched to lower of transfers at the pedal of an accelerator (KICK DOWN) pressed against the stop

• Level of transmission liquid in a transmission is lower than norm.
• The switching cable is incorrectly adjusted.

The engine is not started at installation of the lever of a choice of transfers to any situation or started in other provisions, except PARK or NEUTRAL

• Position of the switch of blocking of a starter is incorrectly adjusted.
• The switching cable is incorrectly adjusted.