Fuel prefilter – Flushing
Note: Only in the case of double fuel prefilter:
1. Cut out contaminated filter.
1 Left filter cut in
2 Right filter cut in
2. Open vent plug (5) of 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 unfil-
tered side, flushing the filter deposits down-
wards out of the filter.
4. Close vent plug (5) and drain cock (6).
Fuel prefilter – Filling with fuel
1. Remove screws securing cover and take off cover (2).
2. Fill filter housing with clean fuel.
3. Place new gasket in cover (2).
4. Fit cover with gasket and secure it with screws.
5. Check differential pressure (→ Page 92).
Result: If flushing did not improve differential pressure, replace fuel prefilter element (→ Page 96).
MS150094/02E 2015-05
| Task Description | 95
TIM-ID: 0000004937 - 022
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