Contents: Removal ↡ Installation ↡
Removal
Note: This operation involves disconnecting the fuel lines - refer to the safety precautions in paragraph 1 and in the section "Safety first!" at the beginning of this Guide.
1. Disconnect the negative battery terminal.
2. Place a container under the fuel pump and cover the surrounding parts with rags to absorb the liquid. Loosen the clamps and disconnect the fuel inlet and outlet lines from the fuel pump. Mark the position of each hose.
3. Loosen the mounting nuts and remove the washers, then lift the fuel pump (see fig. 4.3). Be prepared to quickly clean up any spilled gasoline.
Fig. 4.3. Removing the fuel pump
4. Remove the push rod and then remove the insulating spacer (see Fig. 4.4, a, b).
Article based on data from the website (mercedesman)
Fig. 4.4, a. Remove the pusher...
Fig. 4.4, b....and then remove the insulating spacer
5. Check the condition of the sealing rings on the isolating spacer. If you find damage or destruction of the track, you must replace the spacer assembly, since the sealing rings are not supplied separately.
Installation
6. Installation is carried out in the reverse order. Remember that the pusher must be inserted so that the retainer is facing the fuel pump. Before installing the pump, make sure that the pusher moves freely in the hole of the insulating spacer.