Maintenance
2140−1/A1
Winterthur Gas & Diesel Ltd.
1/ 14
Removal, Disassemble, Assemble, Checks, Installation
Tools:
1 Assembly tool 94023A 1 Pressure reducing valve 94214B
1 Eye bolt 94040-M8 1 Handle 94214A
1 Disassembly / assembly tool 94214 1 Disassembly / assembly tool 94890
2 Screws 94214L 2 Nuts 94214M
1 Disassembly / assembly tool 94214C 1 Pusher 94214D
1 Bush 94214E 1 Steel plate 94214F
2 Screws 94214L 2 Allen screws (M6x12) 94214G
2 Allen screws M6x50) 94214H 1 Gasket 94214I
1. General 1..........................................................
2. Preparation 1.......................................................
3. Removal 3.........................................................
4. Disassemble 4.....................................................
4.1 Hydraulic Drive − Removal 4...................................
4.2 Valve Bush and Valve Guide − Remove 5.......................
4.3 Valve Spindle − Removal 6.....................................
5. Pressure Test 7.....................................................
6. Valve Seat − Lap 8..................................................
7. Checks 8...........................................................
7.1 Visual Check 8................................................
7.2 Manual Check − Free Movement 9..............................
7.3 Valve Seat − Leakage Check 9.................................
8. Assemble 10........................................................
9. Installation 12.......................................................
10. Completion 13.......................................................
1. General
For general overhaul and spare part kits, speak to, or send a message to Wärtsilä
Services Switzerland Ltd.
1) Read the data in the:
D Operation Manual, 0210−1 Safety Precautions and Warnings
D Operation Manual, 2140 Gas Admission Valve (GAV)
D Operation Manual, 8014−1, Gas Fuel System
D Operation Manual, 4003−12, Diagram Gas Fuel.
2) For the inspection intervals, refer to the Maintenance Schedule 0380−1, Gas
Admission Valve.
2. Preparation
WARNING
Danger: Some gas can leak during the removal of the GAV. Do not
use equipment that can cause a spark. Make sure that all equipment
that can case a spark is not in the work area. This will prevent an
explosion, or a fire.
1) Stop the engine, refer to the Operation Manual, 0310−1 paragraph 3.
2) Set to off the main bearing oil pumps (use the service pump for tests).
3) Make sure that the pressure in servo oil supply pipes is zero.
4) Make sure that the pressure in the gas pipe, high pressure pipe and lubricating
oil pipe is zero.
5) Make sure that the drain from the gas control valve is open.
2016
Gas Admission Valve (GAV)
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