{"id":2927,"date":"2023-11-17T23:54:54","date_gmt":"2023-11-17T22:54:54","guid":{"rendered":"https:\/\/mbci.mackuz.ovh\/?p=2927"},"modified":"2023-11-17T23:54:54","modified_gmt":"2023-11-17T22:54:54","slug":"checking-fuel-pump-and-bypass-valve","status":"publish","type":"post","link":"https:\/\/mbci.mackuz.ovh\/index.php\/2023\/11\/17\/checking-fuel-pump-and-bypass-valve\/","title":{"rendered":"Checking fuel pump and bypass valve"},"content":{"rendered":"\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
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07.1\u2014145 Checking fuel pump and bypass valve<\/strong><\/div>\n<\/div>\n<\/td>\n
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Job no. of flat rates or standard texts and flat rates data 07\u20148800 or 5700.<\/div>\n<\/div>\n<\/td>\n
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Test values<\/strong><\/div>\n<\/div>\n<\/td>\n
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Bosch designation<\/div>\n<\/div>\n<\/td>\n
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FP\/K22MW8, MW22<\/div>\n<\/div>\n<\/td>\n
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Measuring point<\/div>\n<\/div>\n<\/td>\n
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prior to fuel pump inlet<\/div>\n<\/div>\n<\/td>\n
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Vacuum<\/div>\n<\/div>\n<\/td>\n
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at idle speed bar vacuum<\/div>\n<\/div>\n<\/td>\n
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0.1<\/div>\n<\/div>\n<\/td>\n
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Measuring point<\/div>\n<\/div>\n<\/td>\n
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between fuel pump and main fuel filter<\/div>\n<\/div>\n<\/td>\n
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Delivery pressure<\/div>\n<\/div>\n<\/td>\n
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at idle speed<\/div>\n
bar gauge pressure<\/div>\n<\/div>\n<\/td>\n
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0.6-0.8<\/div>\n<\/div>\n<\/td>\n
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at 30007min<\/div>\n
bar gauge pressure<\/div>\n<\/div>\n<\/td>\n
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min. 0.8<\/div>\n<\/div>\n<\/td>\n
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at idle speed<\/div>\n
bar gauge pressure<\/div>\n<\/div>\n<\/td>\n
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min. 1.1<\/strong><\/div>\n<\/div>\n<\/td>\n
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Delivery end pressure<\/div>\n<\/div>\n<\/td>\n
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at 3000\/min<\/div>\n
bar gauge pressure<\/div>\n<\/div>\n<\/td>\n
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min. 1<\/strong>.3<\/div>\n<\/div>\n<\/td>\n
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Fuel <\/strong>bypass valve<\/strong><\/div>\n<\/div>\n<\/td>\n
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Opening pressure in bar gauge pressure<\/div>\n<\/div>\n<\/td>\n
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at idle speed<\/div>\n<\/div>\n<\/td>\n
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0.6-0.8<\/div>\n<\/div>\n<\/td>\n
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at 3000\/min<\/div>\n<\/div>\n<\/td>\n
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min. 1.3<\/div>\n<\/div>\n<\/td>\n
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Special tools<\/strong><\/div>\n<\/div>\n<\/td>\n
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Clip for fuel hose<\/div>\n<\/div>\n<\/td>\n
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\"om617<\/div>\n<\/td>\n
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000 589 40 37 00<\/div>\n<\/div>\n<\/td>\n
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Tester for fuel pump<\/div>\n<\/div>\n<\/td>\n
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\"om617<\/div>\n<\/td>\n
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617 589 04 21 00<\/div>\n<\/div>\n<\/td>\n
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07.1.8-145\/1 F3<\/div>\n<\/div>\n<\/td>\n
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Measuring negative pressure<\/strong><\/div>\n<\/div>\n<\/td>\n
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\"om617<\/div>\n<\/td>\n
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1 <\/strong>Connect tester to fuel inlet (1) on fuel pump. For this purpose, remove fuel feed line. Vent in\u00adjection system (07.1 \u2014 140).<\/div>\n<\/div>\n<\/td>\n
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Measure vacuum pressure at idle speed. To do so, use clip to nip hose (arrow) at tester downstream of pressure gage.<\/div>\n
If system fails to reach value of 0.1 bar vacuum, exchange suction and delivery valves or fuel pump (07.1-240).<\/div>\n<\/div>\n<\/td>\n
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Checking fuel feed pressure<\/strong><\/div>\n<\/div>\n<\/td>\n
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\"om617<\/div>\n<\/td>\n
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2\u00a0 \u00a0 \u00a0 \u00a0 Unscrew fuel line (3) on fuel main filter.<\/div>\n
3\u00a0 \u00a0 \u00a0 \u00a0 Connect tester. For this purpose, connect fuel line to hose line for tester with a double hollow screw and closing nut. Connect other hose line of tester to fuel filter.<\/div>\n<\/div>\n<\/td>\n
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4\u00a0 \u00a0 \u00a0 \u00a0 Vent injection system (07.1-140).<\/div>\n
5\u00a0 \u00a0 \u00a0 \u00a0 Warm up engine.<\/div>\n
6\u00a0 \u00a0 \u00a0 \u00a0 Measure fuel feed pressure at idle speed and 3000\/min.<\/div>\n
0.6\u20140.8 bar gauge pressure at idle speed. Min. 0.8 bar gauge pressure at 3000\/min.<\/div>\n<\/div>\n<\/td>\n
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07.1.8-145\/2 F2<\/div>\n<\/div>\n<\/td>\n
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7 What to do in case feed pressure is inadequate:<\/div>\n
a) Check bypass valve, removing, disassembling and cleaning for this purpose.<\/div>\n
Increase preloading of compression spring (2), lengthening spring to 26\u201427 mm.<\/div>\n<\/div>\n<\/td>\n
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\"om617<\/div>\n<\/td>\n
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1\u00a0 \u00a0 \u00a0Ball<\/div>\n
2\u00a0 \u00a0 Compression spring<\/div>\n
3\u00a0 \u00a0 Body<\/div>\n<\/div>\n<\/td>\n
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4\u00a0 \u00a0 Sealing ring<\/div>\n
5\u00a0 \u00a0 Screw plug<\/div>\n<\/div>\n<\/td>\n
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b)\u00a0 \u00a0 \u00a0 \u00a0Check fuel filter for clogging. If necessary, fit new filter element with body (3) and seal\u00ading ring (4).<\/strong><\/div>\n
c)\u00a0 \u00a0 \u00a0 \u00a0Exchange suction and delivery valves or fuel pump (07.1-235).<\/div>\n<\/div>\n<\/td>\n
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\"om617<\/div>\n<\/td>\n
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107-113\u00ae!<\/strong><\/div>\n<\/div>\n<\/td>\n
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Checking final fuel feed pressure<\/strong><\/div>\n<\/div>\n<\/td>\n
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\"om617<\/div>\n<\/td>\n
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8\u00a0 \u00a0 \u00a0 \u00a0 Using clip (arrow), nip fuel return hose.<\/div>\n
9\u00a0 \u00a0 \u00a0 \u00a0 Measure final fuel feed pressure at idle speed and 3000\/min.<\/div>\n
Min. 1.1 bar gauge pressure at idle speed. Min. 1.3 bar gauge pressure at 3000\/min.<\/div>\n<\/div>\n<\/td>\n
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10 If final feed pressure is inadequate, exchange suction and delivery valves or fuel pump (07.1-235).<\/div>\n<\/div>\n<\/td>\n
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07.1.8-145\/3 F2<\/div>\n<\/div>\n<\/td>\n
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07.1\u2014145 Checking fuel pump and bypass valve Job no. of flat rates or standard texts and flat rates data 07\u20148800 or 5700. Test values Bosch designation FP\/K22MW8, MW22 Measuring point prior to fuel pump inlet Vacuum at idle speed bar vacuum 0.1 Measuring point between fuel pump and main fuel filter Delivery pressure at idle speed bar gauge pressure 0.6-0.8 at 30007min bar gauge pressure min. 0.8 at idle speed bar gauge pressure min. 1.1 Delivery end pressure at 3000\/min bar gauge pressure min. 1.3 Fuel bypass valve Opening pressure in bar gauge pressure at idle speed 0.6-0.8 at 3000\/min min. 1.3 Special tools Clip for fuel hose 000 589 40 37 00 Tester for fuel pump 617 589 04 21 00 07.1.8-145\/1 F3 Measuring negative pressure 1 Connect tester to fuel inlet (1) on fuel pump. For this purpose, remove fuel feed line. Vent in\u00adjection system (07.1 \u2014 140). Measure vacuum pressure at idle speed. To do so, use clip to nip hose (arrow) at tester downstream of pressure gage. If system fails to reach value of 0.1 bar vacuum, exchange suction and delivery valves or fuel pump (07.1-240). Checking fuel feed pressure 2\u00a0 \u00a0 \u00a0 \u00a0 Unscrew fuel line (3) on fuel main filter. 3\u00a0 \u00a0 \u00a0 \u00a0 Connect tester. For this purpose, connect fuel line to hose line for tester with a double hollow screw and closing nut. Connect other hose line of tester to fuel filter. 4\u00a0 \u00a0 \u00a0 \u00a0 Vent injection system (07.1-140). 5\u00a0 \u00a0 \u00a0 \u00a0 Warm up engine. 6\u00a0 \u00a0 \u00a0 \u00a0 Measure fuel feed pressure at idle speed and 3000\/min. 0.6\u20140.8 bar gauge pressure at idle speed. Min. 0.8 bar gauge pressure at 3000\/min. 07.1.8-145\/2 F2 7 What to do in case feed pressure is inadequate: a) Check bypass valve, removing, disassembling and cleaning for this purpose. Increase preloading of compression spring (2), lengthening spring to 26\u201427 mm. 1\u00a0 \u00a0 \u00a0Ball 2\u00a0 \u00a0 Compression spring 3\u00a0 \u00a0 Body 4\u00a0 \u00a0 Sealing ring 5\u00a0 \u00a0 Screw plug b)\u00a0 \u00a0 \u00a0 \u00a0Check fuel filter for clogging. If necessary, fit new filter element with body (3) and seal\u00ading ring (4). c)\u00a0 \u00a0 \u00a0 \u00a0Exchange suction and delivery valves or fuel pump (07.1-235). 107-113\u00ae! Checking final fuel feed pressure 8\u00a0 \u00a0 \u00a0 \u00a0 Using clip (arrow), nip fuel return hose. 9\u00a0 \u00a0 \u00a0 \u00a0 Measure final fuel feed pressure at idle speed and 3000\/min. Min. 1.1 bar gauge pressure at idle speed. Min. 1.3 bar gauge pressure at 3000\/min. 10 If final feed pressure is inadequate, exchange suction and delivery valves or fuel pump (07.1-235). 07.1.8-145\/3 F2<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","footnotes":""},"categories":[49,44],"tags":[],"class_list":["post-2927","post","type-post","status-publish","format-standard","hentry","category-injection-system","category-om617"],"aioseo_notices":[],"featured_image_src":null,"author_info":{"display_name":"mackuz","author_link":"https:\/\/mbci.mackuz.ovh\/index.php\/author\/mackuz\/"},"_links":{"self":[{"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/posts\/2927","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/comments?post=2927"}],"version-history":[{"count":1,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/posts\/2927\/revisions"}],"predecessor-version":[{"id":2928,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/posts\/2927\/revisions\/2928"}],"wp:attachment":[{"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/media?parent=2927"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/categories?post=2927"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/tags?post=2927"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}