07.3-500 Operation   A. Decel shutoff   General   During deceleration, the switchover valve located in vacuum line between intake manifold and decel shut-off valve is activated by means of a microswitch and switched to…

    07.3—283 Subsequent installation of separate check valve on fuel pump   Note   In the event of a complaint concerning “Engine fires poorly when warm” an internal leak of fuel pump shows up, a check…

    07.3—282 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…

    07.3—281 Replacement of holder for fuel pump, fuel filter and fuel reservoir   For renewing holder, remove fuel reservoir (07.3-270), fuel filter (07.3-275), fuel pump (07.3-280).   Note Holder has been modified to improve installation…

    07.3—280 Removal and installation of fuel pump   Special tools   Clamp for hose lines 000 589 40 37 00   Note The fuel pump is provided with a special coating on roller running surface,…

    07.3-275 Removal and installation of fuel filter   Special tool   Clamp for hose lines 000 589 40 37 00   Note   The fuel filter is especially provided with an integrated damper for silencing.…

    07.3—270 Removal and installation of fuel reservoir   Special tool   Clamp for fuel hose 000 589 40 37 00   Removal 1 Unscrew protective case. 2 Pinch fuel intake hose (arrow) with a clamp.…

    07.3—245 Replacement, centering and zero position of air flow sensor plate   Tightening torque Nm   Hex. screw 5.0-5.5   Special tool   Torque wrench 1/4″ square, 4—16 Nm 000 589 67 21 00  …

    07.3—242 Subsequent installation of safety switch on air flow sensor   When installing a new engine or an exchange engine without safety switch (19) on air flow sensor and distributor rotor with rpm limitation in…