Operation8019−1/A1
Winterthur Gas & Diesel Ltd.
4/ 12
Key to Fig. 1
1 Fuel inlet pipe 3.24 25 Fuel shut-down pilot valve 3.08
2 Shut-off valve 26 Leakage fuel collection pipe
3 Fuel pump 3.14 of HP fuel pipes and fuel pumps
4 Fuel outlet pipe 27 Leakage fuel (from fuel pumps)
5 Shut-off valve 28 Leakage fuel collection pipe 3.46
6 Pressure retaining valve 3.53 29 Leakage fuel collection pipe (from
7 Pressure gages injection valves)
8 HP fuel pipes 3.29 30 Leakage drain (from rail unit)
9 Intermediate piece 3.30 31 Plug 3.39
10 Intermediate piece 3.30−1, 3.30−2 32 Drain valve (fuel inlet)
11 Non-return valve 3.81−2 33 Drain valve (fuel outlet)
12 Non-return valve 3.81−1 34 Drain pipe (from fuel overpressure
13 Fuel rail 3.05 safety valve 3.52)
14 Injection control unit 3.02 35 Connection from bearing oil system
15 HP fuel pipe 3.47 (to injection valve) 36 Fuel leakage pipe 3.49
16 Injection valve 3.01 37 Rail unit
17 Leakage inspection point 3.17
18 Level switch LS3426A
19 Level switch LS3446A FR Fuel return
20 Level switch LS3444A FS Fuel supply
21 Drain valve 3.65 (usually closed) SO Steam outlet
22 Drain screw 3.82 SI Steam inlet
23 Fuel overpressure safety valve 3.52 FO To fuel overflow tank
24 Fuel pressure control valve 3.06 ST To sludge tank
321
010.238/02
Fig. 2: Pressure Retaining Valve
1 Locknut 3 Spindle
2 Locknut
2015-05
Fuel System 6-cylinders to 8-cylinders
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