Service procedures

Observe greatest possible cleanliness when working with the fuel system.

NOTE! Repair work which requires work on the injection pump and which can alter its setting shall only be carried out by specially trained mechanics, who have the proper tools and test devices at their disposal.

All engine warranties expire if the seals are broken by unauthorized personnel.

Injection pump, removing

1

Carefully wash clean the injection pump, pipes and the engine near the pump. Remove the protection plate for the pump coupling.

2

Close the fuel cocks. Undo the pressure pipes, fuel and lubrication pipes at the pump and the control connections. Fit protective caps. Un-screw the pipe from the smoke control device if in use.

3

Undo the clamping screw on the pump coupling. Remove the screws between the pump coupling and the carrier on pump. Press the pump coupling forwards on the drive shaft.

4

Unscrew the pump’s fixing screws and lift off the pump. Observe care so as not to damage the steel laminates.

Injection pump, fitting and adjusting

Special tools: 6848, 998 9876

NOTE! Do not remove the protective plugs from the injection pump until immediately before connecting the pipes. Check that the pump and governor (only mechanical governor) are correctly filled with oil.

Use new copper washers.

1

Remove the valve cover on 1st cylinder.

2

Remove the inspection plug on the flywheel casing.

3

Crank the engine in its direction of rotation until 1st cylinder is on compression (0° on the flywheel and both valves of 1st cylinder closed).

4

Turn back the flywheel in the opposite direction to the engine’s direction of rotation approx. 90° and then forward in the direction of rotation until the correct number of degrees for the pump setting as per the Workshop Manual, Technical Data for each engine concerned, is immediately behind the needle on the flywheel housing.

NOTE! Set the flywheel to the upper of the given tolerance values.

5

Screw

6

Check that the pump coupling is well cleaned. Connect the pump coupling to the pump flange and tighten the screws.

NOTE! Apply a back stop on the side where the discs are located and tighten on the opposite side to avoid deformation of the discs.

NOTE! Do not tighten the clamping screw.

8 Turn round the pump coupling until the tappet is in its lowest position.

9 Fit tool 6848 on the injection pump. Connect a dial guage to 6848. Adjust the measuring point so that it is flush with the tappet.

7

Remove

9989876