The rubber seal allows the filter to fit tightly to the housing. When passing through the filter, small particles of dirt are deposited in its folds of fine-pored material, while larger particles are deposited in the housing.
The filter only performs its function well if it is regularly maintained. A clogged filter does not allow enough air to enter the engine. The mixture becomes greasy, power drops and fuel consumption increases.
Cleaning and replacing the filter
The filter itself must be cleaned at least once a year and replaced after two years. The filter type for your Mercedes E-class is described in the documentation, you can also find it out in specialized stores selling spare parts for foreign cars. It is not necessary to purchase an original spare filter, filters from other manufacturers are also suitable for use.
Sequence of works
"60,000 km 2 years"
Fig. 4.55. Air filter cover fastening locks
1. Remove the upper part of the air injection damper. Open the six latches on the air injection pipe of the meter (Fig. 4.55) and remove the clamp.
Fig. 4.56. Evaluation of the degree of filter contamination
2. Remove the filter (Fig. 4.56).
Fig. 4.57. Place of accumulation of dirt in the filter housing
3. Clean the filter housing (Fig. 4.57). Oil accumulation in dirt indicates engine wear or an excess of oil in the system.
4. Knock the paper filter on a hard surface. Remove large particles of dirt.
Fig. 4.58. Cleaning the filter
5. Remove finer dirt using compressed air (Fig. 4.58). Direct the air flow from the side along the filter folds.
Do not blow the filter from the outside in. Do not clean the paper filter with liquid.
6. When changing the filter, make sure that the seal fits tightly against the bottom of the filter housing.
7. Insert the new filter into the bottom of the damper, making sure the rubber seal fits tightly.
8. Check the seal on the top of the damper. Replace if necessary.
Fig. 4.59. Installing the sealing ring on the air flow meter discharge pipe
9. Place the upper part of the housing on the discharge pipe, place the lower part, place the discharge pipe on the fitting and tighten with a clamp (Fig. 4.59).
Removal the air boost damper
1. Remove the suction tube from the damper. To do this, unscrew the clamp.
2. Lift the damper off the rubber pad and remove it from the engine compartment.
3. When installing the damper, pay attention to the correct fit of the housing journals on the rubber pad.