Maintenance
5562−2/A1
Winterthur Gas & Diesel Ltd.
1/ 3
Checks and Setting
Tools:
1 OBEL test bench 94272 2 Hydraulic distributors 94934A
1 Valve holder 94272A 2 HP hoses 94935
1 HP oil pump 94931
1. General
Maintenance of the relief valve (1, Fig. 1) is not usually necessary, but you must do a
function check at regular intervals. Refer to the Maintenance Schedule 0380−1 Fuel
Overpressure Safety Valve for the frequency to do the function test. Unserviceable
relief valves must be sent to the manufacturer, or a Wärtsilä Switzerland Ltd.
authorized repair workshop for inspection and repair.
The International Association of Classification Societies (IACS) approval is given for:
D The type of test
D The type of certificate
D The frequency of the test.
The results of the test must be recorded in the Inspection Report.
Note: The two bores (2) identify the relief valve as a new item.
Fig. 1
Applicable pressure that
opens the relief valve is
stamped here.
015.499/07
3
1
AF80
2
2. Removal
1) Stop the engine (refer to the Operation Manual 0310−1).
2) Make sure that the fuel rail has no pressure.
3) Use a spanner (AF80) to remove the relief valve (1) from the valve block (4).
4) Remove and discard the O-rings (3).
2016
Fuel Overpressure Safety Valve
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