Workshop Manual

0312 1600 - 0138

2/6

Fuel system

W 07-07-05

2011

Testing the opening pressure

z Press down the lever of the nozzle tester slowly, with

connected pressure gauge.

The pressure at which the pointer stands still or

suddenly drops is the opening pressure.

07 52

Note

- When the hand lever of the nozzle tester has

been actuated three or four times, the

pressure in the spring space has built back

up.

- The nozzle clamping nut must be loosened

again and re-tightened.

- The test must be repeated.

- If the measured values of three tests are

identical, these can be considered valid.

z Remove the injection valve from the nozzle tester.

07002

Setting the opening pressure on the injection valve

z Insert the injection valve in the holder, unscrew the

nozzle clamping nut and remove all parts.