Fuel injection pump installation details on models 163.113 (612 series engine)
1 - Support bracket; 2 - Fuel return line; 3 - Pressure line support bracket; 4 - Transition nozzle; 5 - Drive element; 19 - Fuel injection pump; 19/1 - Pressure line of high-pressure fuel pump; 19/3 - Threaded nipple; Y75 - Electric shut-off valve
1. Installation details of the fuel injection pump on models 163.113 (612 series engine) are shown in the illustration, to which all references found in the text refer.
2. Remove the cylinder head cover trim panels.
3. Remove the accessory drive belt.
4. Unbolt the pressure line (19/1) from the high-pressure fuel pump (19).
5. Remove the bracket (1) from the pump assembly.
6. Disconnect the fuel return line (2) from the high-pressure fuel pump (19).
7. Remove the electric shut-off valve (Y75).
8. Unscrew the mounting bolts and remove the fuel injection pump assembly (19).
Attention! Do not open the fuel injection pump assembly - if necessary, remove the drive element (5)!
9. Disconnect the connecting pipe (4) from the high-pressure fuel pump.
10. Installation is carried out in the reverse order. Do not forget to replace all sealing elements, ensure that the mating surfaces are clean.
Note: The drive element is replaced together with the intermediate sprocket of the fuel injection pump drive (see Chapter Engine).
Models 163.128
Fuel injection pump installation details on models 163.128 (628 series engine)
1 - Fuel injection pump; 2 - Fuel supply line; 3 - Pressure line of the high-pressure fuel pump; 3a - Threaded nipple; 4 - Fuel return line; 5 - Bolt; 6 - Floating injection advance clutch; 7 - Sealing ring; 8 - Bolt; 9 - Pre-fuel pump; 10 - Drive element; 11 - Sealing ring; 12 - Bolt; Y94 - Mixture quality control valve
Fuel injection pump installation details on models 163.128 (628 series engine)
1 - Fuel injection pump; 6 - Floating injection advance clutch; 13 - Intermediate sprocket of the fuel injection pump drive with a centrifugal corrector; 14 - Nest
1. Details of installation of fuel injection pump on models 163.128 (628 series engine) are shown in the illustrations, to which all references found in the text refer.
2. Remove the throttle positioner with the upper air hoses.
3. Unbolt the pressure line (3) and the fuel return line (4) from the high-pressure fuel pump (1).
4. Disconnect the communication line (arrow) from the mixture quality control valve (Y94).
5. Unscrew the bolts (5) and remove the fuel injection pump assembly (1).
Attention! Do not open the fuel injection pump assembly - if necessary, remove the floating coupling (6)!
6. Assess the degree of wear of the floating clutch (6), replace if necessary.
7. Installation is carried out in the reverse order - make sure that when installing the fuel injection pump, the socket (13) of the intermediate sprocket is turned in the same direction as the zero mark (arrow). Do not forget to replace the tensioner sealing element. Do not forget to replace all sealing elements, ensure that the mating surfaces are clean.