2. Open threaded vent plug (5) of the filter to
be flushed.
3. Unlock drain cock (6) by pressing toggle,
open it and drain fuel.
Result: Fuel flows from filtered side back to the un-
filtered side, flushing the filter deposits
downwards out of the filter.
4. Close threaded vent plug (5) and drain
cock (6).
Fuel prefilter – Filling with fuel
1. Stop engine (→ Page 60) and disable engine start.
2. Remove screws securing the cover and take off cover (2).
3. Fill filter housing with clean fuel.
4. Place new seal in cover (2).
5. Fit cover with gasket and secure it with screws.
6. Check differential pressure (→ Page 88).
Result: If flushing did not lead to an improvement of the differential pressure, replace filter element of fuel pre-
filter (→ Page 92).
MS150118/00E 2014-07 | Task Description | 91
TIM-ID: 0000004937 - 018
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