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Home > Technical Articles > Bosch Mechanical Fuel Injection

BOSCH MECHANICAL FUEL INJECTION
REGULATOR SECTION


Regulator parts diagram

For a larger image of the Parts breakdown Diagram click here

BOSCH MECHANICAL FUEL INJECTION
REGULATOR SECTION

KEY NO. PART PART NO. NO.
1 Regulator housing B1 425 103 038 1
2 Governor counterweight 1 428 115 003 1
3 Bush ) with 1 413 341 005 1
4 Spring washer ) part 2 1 420 151 001 1
5 Plate 1 412 305 020 1
6 Spring plate 1 420 328 083 1
7a Coil spring \- inner 1 424 612 013 1
7b \- middle 1 424 634 022 1
7c \- outer 1 424 619 061 1
8 Spring plate (for part 7a) 1 420 120 042 1
9 Capsule 1 420 506 019 1
10 Circlip (30x1.5 DIN 471) 2 916 650 017 1
11 Washer (omitted) 1 420 102 625 1
12 Contoured cam 1 422 200 055 1
13 Washer (omitted) 1 420 102 007 1
14 Coil spring 1 424 615 002 1
15 Stop screw (omitted) 1 413 462 061 1
16 Lever 1 421 901 007 1
18a Shim (0.05mm thick) 1 230 100 601 as req.
18b (0.1mm thick) 1 230 100 631 as req.
19 Circlip (32. DIN 6799) 2 916 080 006 1
21 Hollow bolt 1 423 458 004 1
22 Washer 1 420 212 000 1
24 Tension spring 1 424 651 029 1
26* Adjustable lever 1 421 960 014 1
27 Clamping lever (for part 26) 1 421 903 015 1
28 Clamping bolt (for part 26) 3 393 410 001 1
29 Inner washer (for part 26) 2 916 012 011 1
30 Hex nut (for part 26) 2 915 012 006 1
31* Striker plate 1 421 331 012 1
32 Inner washer (6.4 DIN 125) ) for 2 916 012 014 2
33 Spring (B6 DIN 127) ) part 31 2 916 693 005 2
34 Hex bolt (M 6x15 DIN 933-8.8) 2 911 061 196 2
37 Pressure plug \- spring-loaded 1 423 462 019 1
38a Washer (0.05mm thick) 1 600 101 610 as req.
38b (0.10mm thick) 1 600 101 611 as req.
38c (0.30mm thick) 1 330 101 020 as req.
39 O-ring seal 1 420 210 021 1
40a Allen-head bolt (M 16x1.5 DIN 908 ) \- new fitting 2 911 271 753 1
40b (M 16x1.5 DIN 906) \- former fitting 2 912 142 703 1
40/1 Gasket (A 16x22 DIN 7603 - Copper) (for part 40a) 2 916 710 612 1
45 Tension spring 1 424 650 045 1
46 Lever (with parts 47\- 49) 1 421 960 043 1
47 Linkage ball 1 420 300 002 1
48 Washer 1 420 100 613 1
49 Circlip (2.3 DIN 6799) 2 916 080 005 1
50 Shaft 1 423 101 014 1
55 Bolt (AM 6x10 DIN 84\- 8.8) 2 910 021 191 1
60* Compensating lever (end of control rack on pump) 1 422 305 037 1
61 Coil spring 1 424 611 024 1
63* Lever 1 421 902 035 1
64 Spacer 1 420 300 074 1
65 Circlip (3.2 DIN 6799) 2 916 080 006 1
66 Lever 1 421 021 005 1
67a Washer (0.1mm thick) 1 230 100 631 as req.
67b (0.2mm thick) 1 230 100 632 as req.
67/1 (1.0mm thick) 1 420 100 038 1
68 Circlip (3.2 DIN 6799) 2 916 080 006 1
69* Plate 1 422 319 002 1
70 Circlip (4 DIN 6799) 2 916 080 007 1
71a Washer (0.05mm thick) 1 420 100 037 as req.
71b (0.1mm thick) 1 520 100 606 as req.
72 Circlip (4 DIN 6799) 2 916 080 007 1
73* Lever 1 421 902 023 1
74 Tension spring 1 424 650 042 1
75 Guide stud 1 421 000 022 1
76 Shaft 1 423 101 011 1
77 Screw (AM 5x5 DIN 84\- 8.8) 2 910 022 147 1
84 Inner washer 2 916 021 010 1
85 Circlip (3.2 DIN 6799) 2 916 080 006 1
86 Barometric cell 1 427 232 003 1
87a Washer (0.05mm thick) 1 200 101 605 as req.
87b (0.1mm thick) 1 200 101 606  
87c (0.3mm thick) 1 200 101 607  
87d (0.5mm thick) 1 100 101 600  
87e (2mm thick) 1 420 101 034  
102 Cover plate 1 425 500 010 1
103 Seal )for 1421 015 018 1
104 Screw ) part 102 2 910 022 196 3
109 Housing seal 1 421 015 031 1
110 Bolt (AM 6x15 DIN 84\- 8.8) (for Regulator) 2 910 022 196 5
111 Spring washer (B 6 DIN 127) 2 916 693 005 4
112 Cover 1 425 603 023 1
117 Seal (for part 112) 1 420 206 007 1
118a Bolt (AM 6x15 DIN 84\- 8.8) ) for 2 910 022 196 3,5(2)
118c Bolt with drill hole ) part 112 1 423 410 037 1
119 Spring washer (B 6 DIN 127) (for part 118a) 2 916 693 005 5
128a Domed nut 3 333 317 001 1
129a Hex nut (M 5 DIN 439) \- updated 2 915 051 105 1
129b (M 4 DIN 934) \- previous 2 915 011 005 1
130 Gasket 1 421 015 014 1
131 Spring washer (B 5 DIN 127) (for part 144) 2 916 693 004 4
132 Screw (AM 5x10 DIN 84\- 8.8) 2 910 022 152 4
135 Eccentric bolt 1 423 180 002 1
142 Allen-head screw (M 6x10 DIN 92\- 8.8) 2 910 142 191 1
143 Washer (A 6x10 DIN 7603 - Copper) 2 916 710 602 1
144 Shutoff solenoid (with parts 128\- 129) 0 333 101 016 1
145 Cover 1 420 050 002 1
146 O-ring seal 1 420 206 005 1
147 Screw (AM 6x15 DIN 84\- 8.8) 2 910 022 196 2
148 Spring washer (B 6 DIN 127) 2 916 693 005 2
149 Hex nut 1 423 300 014 1
150 Threaded base (connects to part 156) 1 423 350 003 1
151 Coil spring 1 424 615 051 1
152 Shaft 1 423 123 005 1
153 Cam 1 422 000 003 1
154 Axle shaft 1 423 203 048 1
155 O-ring seal 1 420 206 011 1
156 Thermostat 1 427 230 012 1
157 Seal plate 1 420 051 002 1
158 Gasket (2.11mm thick) 1 421 023 003 1
159 Screw (AM 6x18 DIN 84\- 8.8) 2 910 022 199 2
160 Washer 1 420 112 000 2
161 Washer 1 410 100 024 2
162 Spring washer (6 DIN 7980) 2 916 580 003 2
163 Cover plate 1 420 050 003 1
164 Gasket 1 420 051 001 1
165 Screw (AM 5x12 DIN 84\- 8.8) 2 910 022 154 2
166 Spring washer (B5 DIN 127) 2 916 693 004 2
167 Coil spring ) for 1 424 611 023 1
168 Pin ) part 60 1 423 201 013 1
169 Cover nut (for part 60) 1 423 342 001 1
172 Cable connector (on part 144) 1 221 334 800 1

DISCLAIMER
These are generic diagrams and meant to be a guide only.
Some parts and numbers may not match your particular model MFI pump/regulator.

Courtesy of
Mike Gillies
1972 911T
Brisbane, Australia
Email: mike.gillies@dnr.qld.gov.au

Last updated on 25/4/98 by Porsche Car Club of Queensland

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