Removal and installation of outer oil return line

The intake manifold of fuel injection engines has to be detached for replacement of the return lined).

1    Detach oil return adaptor at cylinder head.

2    Detach both oil lines to air oil cooler at filter upper section and loosen clamps (arrows).

3    Pull oil return line off of adaptor at oil pan and oil return adaptor.

Models 114 and 116

Models 116 with CIS and 123

Model 126

18.2-030/1 F3

4   Install new oil return line on oil return adaptor.

5   Soften lower end of oil return line by placing in boiling water and then install on oil pan adaptor up to stop without delay.

6   Install oil return adaptor with new gasket and both oil lines.

7    Run engine and check for leaks.

18.2-030/2 F3