Technical data

Overhaul

Pressure testing the nozzles

7. Check the nozzle´s spray pattern at the correct

opening pressure (see Technical Data). Check also

that the fuel sprays stop simultaneously and no drip-

ping occurs. Adjust the opening-pressure with

adjustment-washers (1) being available in different

thicknesses from 1 mm (.03937 in.) to 1.95 mm

(.076772 in.) in steps of 0.05 mm (.001969 in.). Disas-

semble the injector and replace the adjustment-wash-

er against a thinner one or a thicker one depending on

whether the pressure must be reduced or increased.

Assemble the injector and check the opening-pressure

and the spray-pattern.

Injector-sleeve

8. Insert the expanding screw on the special tool p/n

884811 into the copper sleeve and turn the screw anti-

clockwise until the screw has stuck in the sleeve.

Tighten the screw hard to allow the threads to work

themselves into the copper material. Then install the

yoke (1) on the stud bolt of the injector. Put a cylinder

head screw in the cylinder head as a support for the

leg of the yoke. Install the nut (2) and tighten it until

the sleeve is removed.

9. Replace the O-ring, sealing off between the sleeve

and the cylinder head. Dip the new O-ring in soap-water

in order to facilitate the installation. Oil the new injec-

tor sleeve and install it, using special tool p/n 884557.

Knock down the sleeve until it bottoms.

10. Oil the flare-tool p/n 884823 and insert it into the

sleeve (make sure that the dowel is properly retract-

ed). Brace the tool with the injector yoke. Screw down

the flare-tool as far as the shoulder in the injector

sleeve allows, thereby flaring the sleeve. Remove the

tool. Adjust the length of the sleeve outside the plane

of the cylinder head to maximum 1 mm (.03937 in.).