PeachParts Mercedes-Benz Forum - View Single Post

tinypanzer · #5 06-17-2009, 10:51 PM

The strainer goes inside the tank and is a separate job from the pump.

Here's the gig:

Tools you need -

2 hose pinchers, or C-Clamps you can use to pinch off the rubber fuel hoses.
A set of open end wrenches, various sizes
Nut drivers for the fuel pump terminals
Fire extinguisher at arm's reach

Parts you need -

A Pump, and a complete set of copper crush washers for the job. You need 4 if I recall correctly. Might want to get those from the dealer, I have had bad luck with aftermarket ones being the wrong size. It's wise to do the filter at the same time

Job -

1) Disconnect the battery
2) Open the gas cap to release tank pressure.
3) Open the air filter and push the meter plate down. This will flood the motor, but will also release the stored fuel system pressure. Besides, that extra gas in the manifold will be useful when you try to dry start with a new pump.
4) Remove the plastic pump shroud, and the 2 power lines to the pump. You can get those rubber booties from the dealer if they are shot.
5) Use the hose pinchers to pinch off the rubber hose feeding the pump, and the one on the fuel accumulator. This will keep leakage and spray to a minimum.
6) Now you just have to remove the banjo fittings from the pump and filter. Beware of the spray, and use goggles. Hold the thing well, don't bend up the banjo fitting, and don't nick or gall the mating surface.
7) Loosen or open completely the clamp holding the pump and filter
8) Take out the old filter and pump, put in the new ones, installing new copper crush washers in the appropriate spots.

The rest is just reverse of removal. I don't think I've forgotten anything.......