Where is the vacuum reservoir on a Mercedes?
The reservoir is located in the truck on the sedan models and behind the drivers front fender on other models. Closer view of the lines. Now we will check the supply to the check valve. This side will have full vacuum since it is supplying most of the lines that come through the firewall.
Are there any problems with a Mercedes vacuum pump?
Typical Mercedes diesel vacuum pump. They are very reliable and easy to rebuild if need be. The most common failure is the check valve and internal diaphragm. The very first thing I do is make sure we have a constant supply of vacuum.
Why does my Mercedes vacuum leak motor oil?
Combine that with years of moving and bumping the lines while taking off the oil filter housing top, and you have a recipe for a leak. Nothing will destroy a rubber vacuum component faster than motor oil. It swells the rubber, makes the connections loose and then bingo, leaks. So follow along as we hunt down some vacuum leaks…..
How to test yellow lines on Mercedes vacuum?
Replace the 2 one inch pieces of vacuum attached to the check valve also. To test the yellow lines, hook up your hand pump to each line with the other blocked off, and see if you can pull and hold a vacuum.
Why is my vacuum not working on my Mercedes?
Use you hand pump to test the various check valves and to pull vacuum on actuators, reservoir, and other moving mechanisms. In the case with this car the main culprit was the 5 way connector. It was original and swollen with oil vapor and did not grip the lines very well.
Where is the check valve on a Mercedes?
Well different year cars have some differences but these are the main ones. The 2 yellow lines going to the check valve is for the door lock system. The solid brown line is the ignition switch supply line. The brown with blue stripe is to the fuel shut off valve. The green with yellow stripe goes to the HVAC system.
Is there a vacuum system on a Mercedes?
Vacuum, vacuum everywhere, or you wished it was. To many owners of the older Mercedes diesel cars, the vacuum system continues to be an amazing mystery. Full of weird components and even weirder operation of all kinds of stuff on the car. Well I am here to tell you today, it is not that complicated and mysterious.
Replace the 2 one inch pieces of vacuum attached to the check valve also. To test the yellow lines, hook up your hand pump to each line with the other blocked off, and see if you can pull and hold a vacuum.
What to do if your Mercedes vacuum starts leaking?
Be very careful removing the 2 connectors from the supply line metering valve. The nipples are small and very fragile and prone to cracking. If one breaks you will have to replace the entire line. Its not very expensive, but if it is not is perfect condition, then it will leak. Next is the green vacuum dashpot for the transmission.
Why is my Mercedes vacuum door not working?
The metering valve is designed to restrict the vacuum going to this area. Replace the dashpot and the connector if necessary. Next we turn out attention to the big culprits to vacuum leaks. The door lock check valve. If this is leaking then the doors may work slowly or not at all.
Is the Mercedes-Benz W211 dynamic seat reservoir replacement?
Dynamic Seat Vacuum Pump and Reservoir Replacement. Mercedes-Benz W211 models are equipped with dynamic seats in the front of the vehicle. These seats are equipped to fill and exhaust the air cushions of the multi-contour seat according to the requirements that are read by the operating switch.
The reservoir is located in the truck on the sedan models and behind the drivers front fender on other models. Closer view of the lines. Now we will check the supply to the check valve. This side will have full vacuum since it is supplying most of the lines that come through the firewall.
Dynamic Seat Vacuum Pump and Reservoir Replacement. Mercedes-Benz W211 models are equipped with dynamic seats in the front of the vehicle. These seats are equipped to fill and exhaust the air cushions of the multi-contour seat according to the requirements that are read by the operating switch.
Use you hand pump to test the various check valves and to pull vacuum on actuators, reservoir, and other moving mechanisms. In the case with this car the main culprit was the 5 way connector. It was original and swollen with oil vapor and did not grip the lines very well.
Be very careful removing the 2 connectors from the supply line metering valve. The nipples are small and very fragile and prone to cracking. If one breaks you will have to replace the entire line. Its not very expensive, but if it is not is perfect condition, then it will leak. Next is the green vacuum dashpot for the transmission.
Why is my dashpot not working on my Mercedes vacuum?
Because the dashpot is being supplied by the 3 way connector and that is connected to the metering valve in the supply line. The metering valve is designed to restrict the vacuum going to this area. Replace the dashpot and the connector if necessary. Next we turn out attention to the big culprits to vacuum leaks.