Direct Fuel Injection
Page 3B-50 90-8M0050731 MAY 2011
Fuel Pressure Regulator Cutaway
Regulator Closed Regulator Open
1 - Top cover
2 - Expansion plug
3 - O‑ring
4 - Spring retainer
5 - Spring
6 - O‑ring
7 - Diaphragm seat
8 - Air rail
9 - Air passage from air compressor
10 - Fuel return passage to vapor separator
11 - Fuel inlet passage from electric fuel pump
12 - Diaphragm assembly
13 - Calibration screw (do not adjust)
1
13
12
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4
3
2
1
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