DS 19 OPERATION No. DS 111-1 : Work on the crankcase 60
PARTICULAR POINTS
Replacement of the sump.
Remove the engine-gearbox assembly and leave suspended from a pulley block for this operation (see Op. DS 100-1).
Before assembly, cut the old joint close to the bearing caps using a sharp blade. Smear the bearing surface, on the crankcase, with very thin
Hermetic (slightly dilute with alcohol if necessary). Do not fit paper joints.
Replacement of the oil seals.
Removal .
Remove the engine-gearbox assembly and disconnect the gearbox from the engine.
After having removed the sump, turn the engine over, turn the crankshaft so that the throws are horizontal.
Then remove the timing chain and pinion assembly without displacing them.
Assembly .
22 Fitting the half-shells:
Fit a shim steel strip (L=200, l=10, thickness = 0.10) round the crankshaft oil thrower.
Fit the half-shells and the rear bearing cap (Festinol on the bearing faces) and tighten the screws of the bearing cap to 72 ft/lb (10 m.kg).
Tighten the assembly screws of the half-shells.
Tighten the screws fixing the half-shells to 9.5 ft/lb (1.3 m.kg) and remove the assembly screws.
Remove the bearing cap and disengage the shim steel strip. Reassemble the parts (bearing tightening 72 ft/lb (10 m.kg).
23 Adjust the end float on the crankshaft: 0.03 to 0.09 mm (shims fitted between the outer face of the bearing and the timing pinion thrust washer).
24 Fit the timing pinions. Tighten the camshaft nut to 108 ft/lb (15 m.kg) and the crankshaft nut to 145 ft/lb (20 m.kg).
26 Fit the timing cover: smear the bearing face receiving the timing cover join, with liquid Hermetic or Festinol.
Brass washers or Hermetic under the heads of the three screws projecting on the inside of the timing cover (new screws with circular base).
Tighten the screws to 11 ft/lb (1.5 m.kg)
27 Engine flywheel: Tighten the screws to 36 ft/lb (5 m.kg) (no locktabs).
28 Clutch: Tighten the screws to 14 ft/lb (2 m.kg) (spring washers).
30 Connect the gearbox to the engine: smear with Festinol or liquid Hermetic round the area of the driving shaft on the clutch housing.
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