DS 19 OPERATION No. DS 100-3 : Overhauling an engine 54
TOOLS
31 To fit the connecting rods on the crankshaft :
Oil the bearing faces with an oil-can (SAE 20 engine oil), do not use a brush as this is liable to cause the
introduction of dirt of brush hairs.
Fit the half bearings in the rod and in the cap. Make sure that the lugs engage in the grooves. If the old bearings
are to be used, make sure that they are fitted in accordance with the reference marks made when dismantling.
Fit the rods on the crankshaft (see Pl. 2, for position). Do not reverse the position of the cap on the rod. Tighten
the screws to 36 ft/lbs (5 m.kg) (socket 1624-T, see Pl. 16 fig. 3). This tightening torsion must be observed . . . . Torsion spanner 2471-T
Socket 1624-T
NOTE – The bearings are narrower than the cap and the big end of the connecting rod. The cap is also narrower
than the big end of the connecting rod.
32 To fit the camshaft :
a) Fit the camshaft after first oiling its bearings.
Tighten the screws of the thrust plate to 7.5 ft/lbs (1 m.kg) and turn over the lockwashers . . . . . . . . . . . . . . . . . . 12 mm box spanner
b) Fit the oiled tappets in the bores.
33 To fit the cylinder barrels (see Pl. 12) :
NOTE – The precision machining of the cylinder barrels allows them to be assembled in the cylinder block without
the adjustment of the heights, there is therefore, only one type of paper joint (blue marking).
a) Make sure that the base of the cylinder barrels and the bearing face in the cylinder block are perfectly clean;
offer up the cylinder barrels to the cylinder block and make sure they seat squarely.
b) Offer up a joint on the cylinder barrel, the straight edge on the joint parallel to the flat on the cylinder barrel,
the reinforcement towards the cylinder barrel.
By hand, work the joint on to the cylinder barrel until it is as far as the first shoulder on the barrel at “a”.
Then complete the fitting by using the punched plate MR-4134 (see Pl. 12 fig. 3) . . . . . . . . . . . . . . . . . . . . . . Punched plate MR-4134
c) Fit the cylinder barrels in the bores of the cylinder block. Make sure they are correctly in position.
34 To fit the cylinder head (see Pl. 3) :
a) Put the dowels for the cylinder head in position in the cylinder block, the chamfer towards the cylinder head.
b) Fit the cylinder head gasket smeared with boiled linseed oil, the crimping towards the cylinder barrels. Fit
the cylinder head, making sure that no foreign matter is trapped between the cylinder head and the cylinder
head gasket during this operation.
c) Put the rocker push-rods in position (the exhaust valve rods are longer).
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