{"id":2631,"date":"2023-11-14T20:35:02","date_gmt":"2023-11-14T19:35:02","guid":{"rendered":"https:\/\/mbci.mackuz.ovh\/?p=2631"},"modified":"2023-11-14T20:35:02","modified_gmt":"2023-11-14T19:35:02","slug":"conversion-of-fuel-pump-assembly","status":"publish","type":"post","link":"https:\/\/mbci.mackuz.ovh\/index.php\/2023\/11\/14\/conversion-of-fuel-pump-assembly\/","title":{"rendered":"Conversion of fuel pump assembly"},"content":{"rendered":"

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07.3\u2014282 Conversion of fuel pump assembly<\/strong><\/div>\n<\/div>\n<\/td>\n
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A. General<\/strong><\/div>\n<\/div>\n<\/td>\n
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Since February 1979 the pressure reservoir (14) is connected in front of fuel filter, and an additional pressure compensating valve (27) is also installed. As a result, the cold engine will fire much easier and smooth running directly following a cold start will be improved.<\/div>\n
As a result of the installation of light alloy fuel distri\u00adbutor, the pressure compensating valve is integrated in fuel distributor.<\/div>\n<\/div>\n<\/td>\n
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For start of series production <\/strong>refer to „Technical revisions”.<\/div>\n
Note: <\/strong>Since February 1981 the pressure reservoir (14) is connected in front of fuel filter on model 123.093. On this model, the pressure compensating valve (27) is not installed owing to installation position of fuel tank.<\/div>\n<\/div>\n<\/td>\n
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Operation<\/strong><\/div>\n<\/div>\n<\/td>\n
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The pressure reservoir (14) has now only one connection and owing to a throttle is filled only slowly with fuel. From fuel filter the fuel flows directly into feed line toward engine. As a result, the fuel pressure is building up much faster at injection valves.<\/div>\n<\/div>\n<\/td>\n
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07.3.2 lla-282\/1 F2<\/div>\n<\/div>\n<\/td>\n
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In front of fuel filter (21) is an additional pressure compensating valve (27), which closes in the event of pressure in system. If the fuel volume in system is re\u00adduced when the fuel is cooling down, the pressure compensating valve will open. This will prevent that the control piston in fuel distributor will be pulled to full load under influence of vacuum, since other\u00adwise during a cold start the full fuel quantity might be injected for a short period and the engine might be excessively enriched.<\/div>\n<\/div>\n<\/td>\n
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107-t6158<\/div>\n<\/div>\n<\/td>\n
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B. Scope<\/div>\n<\/div>\n<\/td>\n
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Note<\/strong><\/div>\n<\/div>\n<\/td>\n
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On models 107 and 126 fuel filters will be installed with damper (86), as well as a diaphragm damper (95). This will reduce noises caused by fuel pump.<\/div>\n<\/div>\n<\/td>\n
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86\u00a0 \u00a0 \u00a0Fuel filter with damper<\/div>\n
87\u00a0 \u00a0 \u00a0Fuel pump<\/div>\n
95 Diaphragm damper<\/div>\n<\/div>\n<\/td>\n
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On vehicles in national version (aus)(TXZ) and(@) with CIS injection system prior to model year 1981, the respective components can also be installed. On vehicles of model year 1981, the changes are already in place. However, the fuel pump assembly differs by a fuel filter of larger diameter (owing to revised maintenance intervals).<\/div>\n<\/div>\n<\/td>\n
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Introduction into series<\/strong><\/div>\n<\/div>\n<\/td>\n
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Model<\/div>\n<\/div>\n<\/td>\n
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Starting chassis end no.<\/div>\n<\/div>\n<\/td>\n
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Remarks<\/div>\n<\/div>\n<\/td>\n
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107.022 107.042<\/div>\n<\/div>\n<\/td>\n
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010166 010715<\/div>\n<\/div>\n<\/td>\n
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Fuel filter with damper and diaphragm damper (since April 1981)<\/div>\n<\/div>\n<\/td>\n
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126.022\/023<\/div>\n<\/div>\n<\/td>\n
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004661<\/div>\n<\/div>\n<\/td>\n
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Fuel filter with damper (since April 1980)<\/div>\n<\/div>\n<\/td>\n
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126.022\/023<\/div>\n<\/div>\n<\/td>\n
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Diaphragm damper (since October 1980)<\/div>\n<\/div>\n<\/td>\n
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On vehicles with lower chassis end no. the components can be subsequently installed in the event of complaints about „Fuel pump loud”.<\/div>\n<\/div>\n<\/td>\n
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07.3.2 I la-282\/2 F2<\/div>\n<\/div>\n<\/td>\n
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Special tool<\/strong><\/div>\n<\/div>\n<\/td>\n
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Clamp for hose lines<\/div>\n<\/div>\n<\/td>\n
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000 589 40 37 00<\/div>\n<\/div>\n<\/td>\n
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Spare parts<\/strong><\/div>\n<\/div>\n<\/td>\n
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Designation<\/div>\n<\/div>\n<\/td>\n
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Part no.<\/div>\n<\/div>\n<\/td>\n
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Conversion kit<\/div>\n
Steel line for engines with light alloy fuel distributor<\/div>\n<\/div>\n<\/td>\n
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123 470 05 93 126 470 01 64<\/div>\n<\/div>\n<\/td>\n
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Responsible for delivery: Plant 50 (PEW Sindelfingen)<\/div>\n<\/div>\n<\/td>\n
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Note<\/div>\n<\/div>\n<\/td>\n
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When exchanging fuel filter (21), fuel pump (22) or pressure compensating valve (27) make sure that a plastic sheet or plastic sleeve is mounted between these parts and holder (6, 15, 28). Sleeve should project on both sides of holder, since direct contact of parts with holder may lead to contact corrosion.<\/div>\n
On vehicles in (aus) and (T) <\/em>version, a pressure compen\u00adsating valve may not be subsequently installed.<\/div>\n<\/div>\n<\/td>\n
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07.3.2 lla-283\/3<\/div>\n<\/div>\n<\/td>\n
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Layout fuel pump assembly<\/strong><\/div>\n<\/div>\n<\/td>\n
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Former layout<\/div>\n
14 Pressure reservoir<\/div>\n
21\u00a0 \u00a0Filter<\/div>\n
22\u00a0 Fuel pump 24 Damper<\/div>\n<\/div>\n<\/td>\n
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Present layout<\/div>\n
6 Holder for fuel pump and filter 12 Leak line<\/div>\n
14\u00a0 Pressure reservoir\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 ^<\/div>\n
15\u00a0 Holder for pressure reservoir*’ 19 Fuel hose<\/div>\n
21\u00a0 \u00a0Filter<\/div>\n
22\u00a0 Fuel pump<\/div>\n<\/div>\n<\/td>\n
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24 Damper<\/div>\n
26\u00a0 Fuel pressure line<\/div>\n
27\u00a0 Fuel compensating valve<\/div>\n
28\u00a0 Clamp for pressure compensating valve<\/div>\n
29\u00a0 Closing cone<\/div>\n
30\u00a0 Coupling nut<\/div>\n<\/div>\n<\/td>\n
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For conversion, the following parts may be used again:<\/div>\n
Fuel pump, suction damper, pressure reservoir, fuel filter.<\/div>\n<\/div>\n<\/td>\n
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Conversion<\/strong><\/div>\n<\/div>\n<\/td>\n
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1\u00a0 \u00a0 Unscrew protective case.<\/div>\n
2\u00a0 \u00a0 Disconnect electric connections.<\/div>\n
3\u00a0 \u00a0Pinch fuel suction hose (1) between fuel tank and suction damper by means of a clamp.<\/div>\n<\/div>\n<\/td>\n
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07.3..2 lla-282\/4 F2<\/div>\n<\/div>\n<\/td>\n
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4\u00a0 \u00a0 Loosen suction hose on suction damper and pull off.<\/div>\n
5\u00a0 \u00a0 Unscrew fuel pressure line from feed line to engine compartment. Clean screw connection first.<\/div>\n
6\u00a0 \u00a0Unscrew fastening nuts of anti-vibration buffers and remove „fuel pump assembly”.<\/div>\n
7\u00a0 \u00a0 Disassemble fuel pump assembly.<\/div>\n<\/div>\n<\/td>\n
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8 Clean fuel pump and fuel filter externally and mount in addition to plastic sleeve (slip up to bead of pump).<\/div>\n
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Attach plastic sleeve or sheet always in such a manner that it projects on both sides of holder. A direct con\u00adtact of holder and pump or filter may lead to contact corrosion.<\/div>\n<\/div>\n<\/td>\n
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9 Assemble with components of conversion kit pump assembly, as shown in illustration. Slip fuel pump (22) up to bead into holder (6) and mount clamp (28) for pressure compensating valve (27) under holder of pressure reservojr. Prior to tightening screws of holder, position fuel pressure line (26) at pump, filter and pressure reservoir, align parts in relation to each other and tighten screws. On pressure reservoir, close the off-center connection with a closing cone (29) and a coupling nut (30).<\/div>\n<\/div>\n<\/td>\n
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10\u00a0 \u00a0 Install pump assembly and fuel hoses, and make electrical connections.<\/div>\n
11\u00a0 \u00a0 \u00a0Remove clamp on suction hose, run engine and check system for leaks.<\/div>\n
12\u00a0 \u00a0 Mount protective case. Then make sure that fuel hoses are not exposed to chafing.<\/div>\n
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07.3.2 lla-282\/5<\/div>\n<\/div>\n<\/td>\n
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    07.3\u2014282 Conversion of fuel pump assembly   A. General Since February 1979 the pressure reservoir (14) is connected in front of fuel filter, and an additional pressure compensating valve (27) is also installed. As a result, the cold engine will fire much easier and smooth running directly following a cold start will be improved. As a result of the installation of light alloy fuel distri\u00adbutor, the pressure compensating valve is integrated in fuel distributor.   For start of series production refer to „Technical revisions”. Note: Since February 1981 the pressure reservoir (14) is connected in front of fuel filter on model 123.093. On this model, the pressure compensating valve (27) is not installed owing to installation position of fuel tank.   Operation   The pressure reservoir (14) has now only one connection and owing to a throttle is filled only slowly with fuel. From fuel filter the fuel flows directly into feed line toward engine. As a result, the fuel pressure is building up much faster at injection valves.   07.3.2 lla-282\/1 F2       In front of fuel filter (21) is an additional pressure compensating valve (27), which closes in the event of pressure in system. If the fuel volume in system is re\u00adduced when the fuel is cooling down, the pressure compensating valve will open. This will prevent that the control piston in fuel distributor will be pulled to full load under influence of vacuum, since other\u00adwise during a cold start the full fuel quantity might be injected for a short period and the engine might be excessively enriched.   107-t6158   B. Scope Note On models 107 and 126 fuel filters will be installed with damper (86), as well as a diaphragm damper (95). This will reduce noises caused by fuel pump. 86\u00a0 \u00a0 \u00a0Fuel filter with damper 87\u00a0 \u00a0 \u00a0Fuel pump 95 Diaphragm damper   On vehicles in national version (aus)(TXZ) and(@) with CIS injection system prior to model year 1981, the respective components can also be installed. On vehicles of model year 1981, the changes are already in place. However, the fuel pump assembly differs by a fuel filter of larger diameter (owing to revised maintenance intervals).   Introduction into series   Model Starting chassis end no. Remarks 107.022 107.042 010166 010715 Fuel filter with damper and diaphragm damper (since April 1981) 126.022\/023 004661 Fuel filter with damper (since April 1980) 126.022\/023 016862 Diaphragm damper (since October 1980)   On vehicles with lower chassis end no. the components can be subsequently installed in the event of complaints about „Fuel pump loud”.   07.3.2 I la-282\/2 F2       Special tool   Clamp for hose lines 000 589 40 37 00   Spare parts   Designation Part no.   Conversion kit Steel line for engines with light alloy fuel distributor 123 470 05 93 126 470 01 64   Responsible for delivery: Plant 50 (PEW Sindelfingen)   Note When exchanging fuel filter (21), fuel pump (22) or pressure compensating valve (27) make sure that a plastic sheet or plastic sleeve is mounted between these parts and holder (6, 15, 28). Sleeve should project on both sides of holder, since direct contact of parts with holder may lead to contact corrosion. On vehicles in (aus) and (T) version, a pressure compen\u00adsating valve may not be subsequently installed.   07.3.2 lla-283\/3 F 2       Layout fuel pump assembly Former layout 14 Pressure reservoir 21\u00a0 \u00a0Filter 22\u00a0 Fuel pump 24 Damper   Present layout 6 Holder for fuel pump and filter 12 Leak line 14\u00a0 Pressure reservoir\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 ^ 15\u00a0 Holder for pressure reservoir*’ 19 Fuel hose 21\u00a0 \u00a0Filter 22\u00a0 Fuel pump 24 Damper 26\u00a0 Fuel pressure line 27\u00a0 Fuel compensating valve 28\u00a0 Clamp for pressure compensating valve 29\u00a0 Closing cone 30\u00a0 Coupling nut   For conversion, the following parts may be used again: Fuel pump, suction damper, pressure reservoir, fuel filter.   Conversion 1\u00a0 \u00a0 Unscrew protective case. 2\u00a0 \u00a0 Disconnect electric connections. 3\u00a0 \u00a0Pinch fuel suction hose (1) between fuel tank and suction damper by means of a clamp.   07.3..2 lla-282\/4 F2       4\u00a0 \u00a0 Loosen suction hose on suction damper and pull off. 5\u00a0 \u00a0 Unscrew fuel pressure line from feed line to engine compartment. Clean screw connection first. 6\u00a0 \u00a0Unscrew fastening nuts of anti-vibration buffers and remove „fuel pump assembly”. 7\u00a0 \u00a0 Disassemble fuel pump assembly.   8 Clean fuel pump and fuel filter externally and mount in addition to plastic sleeve (slip up to bead of pump). As an exception, a sheet (e.g. Tesafilm) may be glued on instead of plastic sleeve. Attach plastic sleeve or sheet always in such a manner that it projects on both sides of holder. A direct con\u00adtact of holder and pump or filter may lead to contact corrosion.   9 Assemble with components of conversion kit pump assembly, as shown in illustration. Slip fuel pump (22) up to bead into holder (6) and mount clamp (28) for pressure compensating valve (27) under holder of pressure reservojr. Prior to tightening screws of holder, position fuel pressure line (26) at pump, filter and pressure reservoir, align parts in relation to each other and tighten screws. On pressure reservoir, close the off-center connection with a closing cone (29) and a coupling nut (30).   10\u00a0 \u00a0 Install pump assembly and fuel hoses, and make electrical connections. 11\u00a0 \u00a0 \u00a0Remove clamp on suction hose, run engine and check system for leaks. 12\u00a0 \u00a0 Mount protective case. Then make sure that fuel hoses are not exposed to chafing. Note: On vehicles with auxiliary heater, the leak line is approx. 50 mm in front of suction damper. Insert a T-fitting. Here, the protective anti-chafing hose must be shortened.   07.3.2 lla-282\/5 F 2        <\/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":[27,33],"tags":[],"class_list":["post-2631","post","type-post","status-publish","format-standard","hentry","category-m110","category-mechanical-gazoline-injection-system-cis"],"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\/2631","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=2631"}],"version-history":[{"count":1,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/posts\/2631\/revisions"}],"predecessor-version":[{"id":2632,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/posts\/2631\/revisions\/2632"}],"wp:attachment":[{"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/media?parent=2631"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/categories?post=2631"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/tags?post=2631"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}