Operation8019−1/A2
Winterthur Gas & Diesel Ltd.
4/ 13
Key to Fig. 1
1 Fuel inlet pipe 3.24 30 Drain valve 3.65 (usually closed)
2 Shut-off valve (inlet) 31 Drain screw 3.82
3 Fuel pump 3.14 32 Fuel overpressure safety valves 3.52
4 Fuel outlet pipe 33 Fuel pressure control valve 3.06
5 Shut-off valve (outlet) 34 Fuel shut-down pilot valve 3.08
6 Pressure retaining valve 3.53-1 35 Leakage fuel collection pipe
7 Pressure retaining valve 3.53-2 of HP fuel pipes
8 Pressure gages 36 Leakage fuel from fuel pumps
9 HP fuel pipe 3.28 37 Leakage fuel collection pipe 3.46
10 HP fuel pipe 3.29 38 Leakage fuel collection pipe from
11 Non-return valve 3.81−1 injection valves
12 Non-return valve 3.81−2 39 Leakage drain from rail unit DE
13 Collector block 40 Leakage drain from rail unit FE
14 Connection pipe 41 Plug 3.39
15 Fuel rail 3.05 42 Drain valve (fuel inlet)
16 Injection control unit 3.02 43 Drain valve (fuel outlet)
17 HP fuel pipe 3.47 (to injection valve) 44 Drain pipe from fuel overpressure
18 Injection valve 3.01 safety valve 31
19 Leakage inspection point 3.17 45 Connection from bearing oil system
20 Level switch LS3426A 46 Fuel leakage pipe 3.49
21 Level switch LS3427A 47 Rail unit
22 Level switch LS3446A 48 Intermediate piece 3.30
23 Level switch LS3447A
24 Level switch LS3444A ST To sludge tank
25 Level switch LS3445A FR Fuel return
26 Shut−off valve 3.33−3 FS Fuel supply
27 Shut−off valve 3.33−4 SO Steam outlet
28 Shut−off valve 3.33−5 SI Steam inlet
29 Shut−off valve 3.33−6 FO To fuel overflow tank
321
010.238/02
Fig. 2: Pressure Retaining Valve
1 Locknut 3 Spindle
2 Locknut
2015-05
Fuel System 9-cylinders
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