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N:\VMT\5TRAININ\MOTOR\MOTORD28\1TEXTE\D2876_tga_e_neu.doc Page 152 S e r v i c e T r a i n i n g C e n t e r FUEL SYSTEM (KSC) The cartridge-type filter elements used to date have been replaced by a Fuel Service Center (KSC). The KSC combines the pre-cleaner, the hand primer and the main filter in one component. It can be used with or without heating. The heating element can be retrofitted fairly simply. Between the fuel supply pump and the KSC there is also a fuel pressure sensor for monitoring the fuel filter. NOTE: For bleeding only the hand primer (1) has to be screwed off. No lines have to be opened. If the pressure in the suction chamber of the injection pump is too low, this will lead to poor performance, high fuel consumption and faults in the needle movement sensor, part no. overflow valve 91.12905.0002 (2.9 bar) The filter area is about 50 % larger than in conventional filters. The filter element has no metal parts and can be disposed of in an environment-friendly manner. The pre-filter can be rinsed out. The cold-start aid uses the conventional flame-start system, but with a new solenoid valve. All parts used in the fuel system are suitable for use of RME fuels. (1) Hand primer (2) Pre-filter (3) Fine filter (4) Filter heater (option) (5) Solenoid valve (6) Flame glow plug (7) Fuel tank
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Fuel System D28

Apr 11, 2016

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Ian Muhammad

MAN D28 Fuel System
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  • N:\VMT\5TRAININ\MOTOR\MOTORD28\1TEXTE\D2876_tga_e_neu.doc Page 152

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    FUEL SYSTEM (KSC)

    The cartridge-type filter elements used to date have beenreplaced by a Fuel Service Center (KSC).The KSC combines the pre-cleaner, the hand primer and themain filter in one component. It can be used with or withoutheating. The heating element can be retrofitted fairly simply.Between the fuel supply pump and the KSC there is also a fuelpressure sensor for monitoring the fuel filter.

    NOTE:For bleeding only the hand primer (1) has to be screwed off. Nolines have to be opened.

    If the pressure in the suction chamber of the injection pump istoo low, this will lead to poor performance, high fuel consumptionand faults in the needle movement sensor, part no. overflowvalve 91.12905.0002 (2.9 bar)

    The filter area is about 50 % larger than in conventional filters.The filter element has no metal parts and can be disposed of inan environment-friendly manner. The pre-filter can be rinsed out.The cold-start aid uses the conventional flame-start system, butwith a new solenoid valve.All parts used in the fuel system are suitable for use of RMEfuels.

    (1) Hand primer(2) Pre-filter(3) Fine filter(4) Filter heater (option)(5) Solenoid valve(6) Flame glow plug(7) Fuel tank

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    SEPAR 2000

    Pre-separator and fuel filter

    The Separ 2000 filter is installed at an easily accessible point ofthe intake line. All other filters in the intake line should beremoved. The pre-cleaner, the fine filter and the microfilterremain in the fuel system.If the filter is installed at a lower level than the fuel tank, a shut-off valve should be installed upstream of the filter so that no fuelcan flow out when the filter element is changed.

    Draining out condensation and impurities(weekly, or more often if climate and operating conditionsdemand it)

    Note: If the condensation is to be drained out the fuel tankmust be at least half-full. Drain out the condensationand impurities before they reach the lower edge of thecentrifuge (this can be seen in the sight glass).

    Park the vehicle Screw hose with clamp (MAN no.: 81.12540-6004) to neck of

    drain cock.

    Note on assembly: Pre-load the clamp only so much that it isjust possible to push the hose into place.

    Place a suitable vessel underneath. Fit a new seal to the drain plug before every draining

    procedure. Unscrew bleed screw by one or two turns. Open drain cock. Let condensation and impurities drain out and dispose of

    them properly. Close drain cock. Tighten bleed screw again. Pull off hose.

    Tightening torque for bleed screw ........................... 8-10 NmIf contaminated the filter element in the upper part of the housingmust be cleaned or changed (see Maintenance Manual).A Fuel inputB Fuel returnC Bleed screwD Drain cockE Micro filter (10 )

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