Prior requirements

PRIOR REQUIREMENTS

Cleaning the gasket and joint faces

• Never clean these faces with an abrasive or a sharp edged tool. There should be no impact marks, scores or burrs on the gasket and joint faces.
• Use the special stripper (pt. no. 9731.25), scrupulously observing the instructions for use.

Lubricate the various engine components with engine oil as they are fitted.

Consult the relevant sections for information on refacing the cylinder head, recutting the valve seats, regrinding the crankshaft, etc.

Preparation :

• Use only parts that are clean and free from defect.
• When refitting original components, retain the same matched assemblies and follow the position and direction marks made during dismantling.
• Retain new components in their correct matched assemblies.
• Automatically replace all seals and locking washers.

Checking the connecting rods, figs. I and II :

• Check the condition of the big-end bolts.
• There should be no signs of overheating.
• There should be no signs of picking-up in the small end and big-end bores.

NOTE - The big-end bolts should not be replaced.

They can, however, be replaced individually if the threads is damaged.

• Ensure that the oil jet is not blocked.

Preparing the crankshaft

Sludge trap plugs

• Clean the thread, fig. III, by screwing and M24 x 1,50 plug tap down the thread (depth 10 mm).
• Screw-in a new plug as shown in fig. IV and tighten it to a torque of 5.5 m.daN (55 Nm. 40 lbf ft).
• Lock it fig. V by marking a punch mark half on the plug and half.

Counterbalance weights

• Fit the counterbalance weights, fig. VI, following the marks made during dismantling.
• Tighten the bolts to a torque of 6.75 m.daN. (67.5 Nm, 50 lbf ft).