Maintenance
5564−1/A2
Winterthur Gas & Diesel Ltd.
1/ 5
Removal and Installation
Tools:
1 Eye bolt 94045−M10 1 Chain 94327
1. General 1..........................................................
2. Preparation 1.......................................................
3. Removal 2.........................................................
4. Installation 4.......................................................
5. Completion 5.......................................................
6. Storage 5..........................................................
1. General
It is possible to do maintenance to this injection control unit (ICU) on board. Speak to,
or send a message to Wärtsilä Services Switzerland to get the repair kits and
instruction manuals that follow:
D Repair kit for the fuel valve assembly
D Repair kit for the control device
D Repair kit for the measuring device
Maintenance on the injection control unit must only be done by approved personnel
who have the special knowledge of the ICU. If personnel are not approved, send the
ICU to a Wärtsilä service station for overhaul.
Note: Do not do maintenance on the rail valves. Defective rail valves must
replaced.
Fig. 1
Fuel Valve Assembly
Measuring Device
Control Device
2. Preparation
1) Cut out the injection, refer to the Operation Manual 0510−1.
2) Let the engine temperature decrease to zero.
3) Let the pressure in the fuel rail decrease to zero.
4) Make sure that the fuel injection system has no pressure.
5) Make sure that all tools and equipment are clean and in good condition.
6) Clean the work area adjacent to the ICU (1, Fig. 2).
7) Remove the HP fuel pipes, refer to 8733.1.
Injection Control Unit
2017−11
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