Check fluid level, leakage control

1. When marked oiling the power unit and a large consumption of oil, inspect the place of the most probable development of leaks:

• The sealing element filler cap motor oil - check for cracks and other mechanical damages;
• Components of the crankcase ventilation system (in particular, - the ventilation hose extending from the cylinder head cover to the intake duct);
• Cover Gasket (EC) of the cylinder head;
• Head gasket (s) of cylinders;
• The sealing element drain plug sump;
• Gasket oil filter - carefully examine the place fit the filter flange to the landing;
• Laying of the oil pan;
• Front and rear crankshaft oil.

2. Wrap in plastic generator, spray the engine is usually cold cleaner - then, after a short time - at the car wash machine.
3. The joints of the mating surfaces and sealing elements of the power unit outside sprinkle lime or talc.
4. Check the oil level, if necessary, make appropriate adjustment (see. Below).
5. During a short (about 30 km) trip (preferably on the highway) warm up the engine to normal operating temperature - hot oil has high fluidity and easily seep through leaks.
6. Park the car in a safe place and, flashing his lamp, examine the engine to localize sources of oil leaks. Eliminate the causes of leaks.

1. The monitoring function of the motor oil level lies in the section "Standard Display" menu of the main on-board computer (refer to the manual car - ask in shops of automobile literature).
2. , ?�???????�?�?�?�?????�?? ???�???�?? ?????�?�?�?????�?� ???????�?�?�?? G270 CDI ?? ?�???????�?�?�?�?????�?? ???�???�?? ?????�?�?�?????�?� ???????�?�?�?? G400 CDI ). Physical check the oil level using the dipstick threaded into the guide tube and descends into the engine to the bottom of the tray of his housing (see. Illustration Engine compartment petrol models (for example, G55 AMG), Engine compartment diesel models G270 CDI and Engine compartment diesel models CDI G400). Checking the oil level should be done before the first day of the current trip, or after about 5 minutes after stopping the engine. If you run the test immediately after switching off the engine, the results are not adequately reflect the situation as part of the oil will be distributed on internal engine components and galleries.

3. Remove the dipstick from guide tube and wipe it dry with a clean cloth or a blade with a paper towel. Fill the dipstick back into the tube until it stops, then remove again. After examining the blade of the probe, evaluate the value of oil-wetted area. The oil level should be between the upper and lower marks on the blade of the probe. If necessary, add the appropriate amount of engine oil grades required.

1 - The design of the blade of the probe used in the models G320 / 500/55 AMG / 400 CDI
2 - The design of the blade of the probe used in the models G270 CDI

4. Lowering the level of the lower border allowable range leads to the development of oil starvation of engine, and is fraught with serious mechanical damage to the latter. Try not to pour oil above the top mark as this can lead to thrown at the spark plug or failure of seals of the power unit as a result of excessive pressure.
5. , ?�???????�?�?�?�?????�?? ???�???�?? ?????�?�?�?????�?� ???????�?�?�?? G270 CDI ?? ?�???????�?�?�?�?????�?? ???�???�?? ?????�?�?�?????�?� ???????�?�?�?? G400 CDI ). To pour the oil in the engine must be removed threaded filler cap (see. Illustration Engine compartment petrol models (for example, AMG G55), Engine compartment G270 CDI diesel models and Engine compartment CDI diesel models G400). In order to avoid oil spray during filling into the engine, use a funnel or oil can with a long spout. Gulf oil, screw and tighten the oil filler cap, and then start the engine and inspect for signs of leakage drain plug and mating with the surface of the oil filter unit. Stop the engine, wait a 5-10 minutes, during which the oil drains into the tray, and then recheck the level.

6. Check engine oil level is the important preventive procedure of maintenance of the engine. Continuous reduction indicates the presence of oil leaks as a result of failure of the seals, damaged seals, wear of piston rings or valve guides. If the oil is in color or consistency like milk or are present in a drop of water, this indicates possible damage to the cylinder head gasket, or the formation of cracks in the body of the head (s) or block. The check should be made without delay. During the measurement of level of oil, always check its condition. Thumb and index finger to remove the blade probe traces of oil - in the case of the presence therein of small metal particles oil must be replaced (see. Section Replacement of impellent oil and the oil filter).

1. All vehicles covered in this manual are equipped with a cooling system of compensation type, operating at a positive pressure. ). Plastic expansion tank is located on the right in the engine compartment and connected hoses to the radiator and the water jacket of the power unit (see. Illustration Engine compartment petrol models (for example, AMG G55)). As the heating of the engine during its operation expanding coolant fills the tank. At cooling of the engine coolant is automatically fed back into the cooling system, which ensures the maintenance of a constant value of its level.

2. Checking the coolant level in the reservoir should be done regularly, at a strictly horizontal position of the car and the engine is off. When cold, the coolant level should be up to the reference mark on the wall / in the expansion tank, depending on the version. After warming up the engine coolant level is still rising by around 1.0 - 1.5 cm. In case of need make corresponding updating - just add the required liquid formulation (see. Specifications).

3. Having made the short trip by car, once again measure the coolant level - a slight adjustment can be made by topping up with distilled water, however, it should be remembered that the frequent addition of water leads to dilution of antifreeze, it is wise always topped up in a mixture of the desired composition.
4. Regularly there is a need to adjust the coolant level indicate the presence of its leaks (external or internal), - carefully examine structural condition radiator, connecting hoses, filler cap, drain plug and the water pump (see. Section Check of functioning of system of cooling and frost coolant replacement fluid). If you identify the source of the leak is not possible, check the tightness of landing covers a broad tank and a radiator in a service station.
5. Removing the covers of the components of the cooling system must be carried out after the complete cooling of the engine. Wrap a cloth cover and remove it to the first point of weakening the resistance - if it from the cover begins to break out steam or cooling liquid, allow the engine to cool a little, and only then completely remove the cover.
6. It is also necessary to check the condition of the cooling liquid, it should be relatively clear. If the fluid has a reddish-brown color, it is necessary to drain, then rinse path cooling system and fill it with fresh mixture of the desired composition. Even if the coolant looks fine, its member corrosion inhibitors over time lose their effectiveness, so a replacement in any case should be made in accordance with the schedule of routine maintenance.
7. If necessary, check the coolant freezing resistance can be made using a hydrometer - compare the results of measurement to requirements of Specifications.

1. Equipped with the brake master cylinder reservoir (GTZ), the system is installed in the rear left corner of the engine compartment. On the fall of the brake fluid level of the driver prevents firing of built-in combination of devices the control lamp (see. Section A combination of devices, meters, warning lights and indicator lights), the float sensor switch which is integrated in the (models of release till 12.2000) / housing (models of release since 12.2000) tank GTZ.

   and - Location of tank equipped with (1) the brake master cylinder on models of release till 12.2000
   b - Location fitted tank (1) of the master cylinder on models of release with 12.2000

a.

b.

2. The brake fluid level is checked visually and must be between the ?�MAX?� and ?�MIN?�, marked on translucent tank wall GTZ. In case of need make corresponding updating, having added the required amount of fresh fluid through the neck of the reservoir - to loosen the cover, wipe the outside of the tank to prevent the ingress of dirt into the hydraulic path.

3. When the cover is removed, check the fluid and the walls of the tank GTZ for signs of contamination. In the case of detecting the presence of rust particles, dirt or water droplets, the liquid should be replaced by a subsequent "pumping" the brake system (see chap. Brakes and auxiliary systems).
4. After finishing adjustment / replacement, be sure of landing evenness and reliability of a tightening of the lid of the tank.
5. The gradual lowering of the level of liquid in the tank due to the GTZ brake pad wear. The need for the addition of liquid is absent if the level does not drop below the ?�MIN?�, - if necessary, check the condition of the friction linings brake pads, - replacement pads will automatically equalize level.
6. If you need to adjust the brake fluid level occurs regularly, you should immediately check carefully hydraulic path of brake system for signs of leaks, - carefully inspect the condition of supports / wheel cylinders, GTZ, brake tubes, hoses and compression fittings (see. Categories Test brake system and check and replacement of hoses of an impellent compartment, localization of leaks).
7. When lowering the level of liquid in the tank GTZ below the ?�MIN?� brake system should be "bled" (see chap. Brakes and auxiliary systems).

1. Checking the power steering fluid is produced at a temperature of about 20 ?� C. ?? ???????????????????�?�?�?????�?� ???�?�?????�???�?�????). The tank is equipped with a power steering equipped dipstick and screw cap is placed on the right in the engine compartment (see. Illustration Engine compartment petrol models (for example, G55 AMG) and the accompanying illustration). On diesel models to provide access to the tank must be removed GUR trim panel of the cylinder head. The fluid level must be between the ?�MIN?� and ?�MAX" on the cutting edge of the probe.
   
   and - Location tank GUR on petrol models
   30a - Tank GUR
   30g - The lid of the tank GUR
   and - probe measuring the liquid level GUR
   b - Location tank GUR on diesel models equipped with motor M612
   30a - Tank GUR
   30g - The lid of the tank GUR
   and - probe measuring the liquid level GUR
   c - Location of the tank GUR on diesel models equipped with motor M628

a.

b.

c.

1. Check of level ATF correct to produce when the engine and transmission, - make a car a short (about 15 km) trip.
2. Park the car on a level surface, cock a lay brake. To secure the vehicle prop wheel chock.
3. Run the engine at idle. Depress the brake pedal and carefully switch the selector lever from the "P" position ?�D?�, then return back. Make sure there are no signs of external leaks ATF.
4. Dipstick fluid located in the rear part of the transmission. Before removing the probe, thoroughly clean the surface adjacent to the crankcase - dirt inside the transmission is not allowed.
5. Having hooked a suitable screwdriver, remove the locking clip (red lock tab breaks off, the remaining fragment of the lid is pushed down) and remove the cover (see. Illustration above).
6. Start the engine and hold the brake pedal car fixed, consistently push the lever through all operating ranges, in conclusion, once again returned to the "P".
7. Pre thoroughly wiping, thread the dipstick all the way into the filler neck of the transmission. Remove the dipstick and the length of the wetted portion of his blade determine the ATF level in the transmission housing, in cold unit level should be between the min and max the lower (25 ?� C) scale of the probe, the hot - between identical marks top (80 ?�) of the scale (see . illustration above).
8. During a short trip transmission warm to normal operating temperature Wait about 2 minutes and again recheck the fluid level with the engine running. If the ATF level is too high, excess fluid to be pumped from the crankcase AT mandatory, - excess levels, as well as the lack of ATF can lead to transmission failure.
9. Replace the filler cap and lock it with a new locking latch (see. Illustration above).
10. Inspect sump AT for signs of leaks, if necessary, make the necessary corrections.

1. Ensure the horizontal installation of the car. Wipe the surface of the transfer case around the filler / level plug (see. Conjugated. Illustration - Location of the filler / level plug on the transfer case Series 750.65).

2. Remove the plug and inserting a finger into the hole, check the oil level - it should reach up to the lower edge of the hole. If necessary, make appropriate adjustment.