The proper function of the feed pump is essential for the filling of the in-line injection pump and hence the engine runs smoothly, and the full power of the engine. Age and mileage-related the feed pump wears in both the diesel and the veggie oil use. The valves exhaust, the spring tension decreases and the seals shrink.
It is recommended to use Viton seals if you overhaul the feed pump, because they are more durable and resistant to all fuels.
The set consists of:
1 x retun valve for DB-fuel pump(rv-db)
1 x sealing insert for DB-fuel pump
1 x valve spring, enforced, for DB-fuel pump
1 x o-ring for DB-fuel pump, Viton small
1 x o-ring for DB-fuel pump, Viton, medium
1 x o-ring for DB-fuel pump, Viton large
1 x o-ring for DB-fuel pump, Viton, XL
This set fits only to E250D, E300D 4-valve-Diesel.
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