Mercedes-Benz E-class W124 - Repair manual and operation

2.4.1. Replacement of oil and oil filter

Periodic replacement of oil and oil filter – the most important preventive operations of maintenance. When engine oil grows old, it becomes liquid and polluted that leads to premature wear of the engine.

Before this operation gather all necessary tools and materials. It is necessary that the engine was warm in order that oil flew down together with the bulk of the substances which polluted it better.

Arrangement of a bracket (1) of fastening of a sealant to a box of a motor compartment

Oil return pipeline arrangement

Arrangement of nuts of fastening of a cover of an oil filter

Arrangement of a stopper of discharge of oil from the engine

Extraction of the filtering element from a casing of an oil filter

Opening at the oil return pipeline basis

Clean a small opening at the oil return pipeline basis.

Installation of a new sealing ring of round section on a cover of an oil filter

PERFORMANCE ORDER

1. Lift the car so that the stopper for discharge of oil from the engine was in the lowermost point. 2. The casing of an oil filter is located in the left back corner of a motor compartment behind a final collector. 3. In the presence remove a bracket of fastening or unscrew the screw and remove rubber consolidation from the top part of a partition of a motor compartment for improvement of access to a casing of an oil filter (see rice. An arrangement of a bracket (1) of fastening of a sealant to a box of a motor compartment). 4. On models with the oil return pipeline fastening to the center of a cover of a casing of an oil filter unscrew the pipeline of return of oil and remove it from a cover (see rice. Oil return pipeline arrangement). 5. Unscrew two nuts and uncover a casing of an oil filter (see rice. Arrangement of nuts of fastening of a cover of an oil filter). 6. Weaken a drain stopper approximately on a half of a turn. Place a container for discharge of oil under a drain stopper and unscrew a stopper completely. If it is necessary, press a stopper when you unscrew that oil did not proceed prematurely. Remove ring consolidation from a masloslivny stopper (see rice. An arrangement of a stopper of discharge of oil from the engine). 7. When oil completely flows down, wipe everything around a drain opening a rag and reliably screw up a stopper into place. 8. Remove all tools from under the car and lower the car. 9. Take the filtering element from a casing of an oil filter (see rice. Extraction of the filtering element from a casing of an oil filter). 10. Wipe a casing and a cover of an oil filter. Check passability of the pipeline of return of oil. The pipeline has to be blown freely. If necessary clear a small opening at the pipeline basis (see rice. An opening at the oil return pipeline basis). 11. Establish a new sealing ring of round section on a cover of an oil filter (see rice. Installation of a new sealing ring of round section on a cover of an oil filter). 12. Establish the new filtering element of an oil filter in a casing and a cover and fix by bolts, having tightened them the required moment. 13. Establish a new sealing ring of round section to the top part of a returnable oil pipeline, then establish an oil return pipe. 14. Take the probe for measurement of level of oil and remove a stopper from a maslozalivny mouth. Fill in oil in the engine, using the corresponding grade of oil. Fill in a half of necessary amount of oil and wait several minutes that oil flew down in the pallet. Then continue to pour oil in the small portions until the level of oil reaches the minimum level on the probe. At addition about 1 more liter the level of oil will rise to maximum on the probe. Insert the probe for measurement of level of oil and close a cover of a maslozalivny mouth. 15. Start the engine and let's it work several minutes. Check it regarding leak of oil around the filter and a drain stopper on the oil pallet. Keep in mind that the emergency bulb of pressure of oil can burn several seconds as oil has to fill all channels and oil capacities in the engine. 16. Switch off the engine and wait several minutes that oil flew down in the pallet. Check the level of oil and add if it is necessary.