mercedes-benz — Non-tight ferrule connection

Introduction General repair instructions 120840-004 Ferrule fittings 1044-004 Screwing in ►Cut off the corresponding tube at right angles. ►Do not use a pipe cutter. In case of pipe bends, the straight pipe end up to where the bending radius starts must be at least twice the height of the union nut. ►Slightly deburr the pipe end on the inside and outside. ►Do not chamfer the pipe end. ►Clean the pipe end. 2 3 1 ►Push the union nut (1) and the ferrule (2) on the pipe. ►Push the pipe against the stop in the connector (3) and tighten the union nut until the ferrule seizes the pipe. This pressure point can be felt because increased power is needed from here.

The pipe must be fixed securely during assembly and must not rotate. ►Tighten the union nut by half a rotation beyond the first pressure point. ►Check the incision at the cutting edge. A visible collar must fill the space ahead of the ferrule face end. The ferrule may rotate, but axial displacement must not be possible. ►Insert the pre-assembled pipe into the well-oiled threaded joint. ►Screw on the union nut until the power needed to do this clearly increases. ►After that, continue to screw the union nut on for half a turn beyond that point. ►Observe the tightening torques.

Page 23 21 Ferrule without seal 154515-001 4 3 2 1 22 Ferrule with seal 154516-001 Non-tight ferrule connection ►If a connection leaks, loosen the union nut until some oil escapes. ►Then tighten according to instructions. ►Replace the seal (4) if required. 16 00 0296 433 2 - RHB Dieselmotor OM906/926LA - 10/2014