1084B18 ENGINE OIL PUMP, REMOVED - CHECK AT BENCH - Alfa - 159 - eLearn

939010655 - 1084B18 ENGINE OIL PUMP, REMOVED - CHECK AT BENCH

) 1. Undo the bolts (1a) and remove the oil pump cover (1b).2. Remove the drive gear.3. Remove the driven gear.4. Undo the cap (4a) and remove the oil pressure relief valve (4b).- Remove the crankshaft front oil seal

Refitting ( Removing

) - Check that the radial clearance between the driven gear and the pump casing is within the recommended limits; if this is not the case, replace the oil pump assembly.

Measurement	Value	Validity
Radial clearance between pump casing and driven gear	0.080 - 0.186 mm	1.9 JTD 8V1.9 JTD 16V

- Check that the axial clearance between the pump cover support plane and the top of the gears is within the recommended values; if this is not the case, replace the oil pump assembly.

Measurement	Value	Validity
Endfloat between the pump casing support plane and the top of the gears	0.025 - 0.070 mm	1.9 JTD 8V1.9 JTD 16V

- Check that the height of the oil pressure relief valve spring is within the recommended values; if not, replace the spring.

Measurement	Value	Validity
Height of engine oil pressure relief valve spring with test load of 8.78 - 9.66 daN	36.0 mm	1.9 JTD 8V1.9 JTD 16V

Measurement	Value	Validity
Length of engine oil pressure relief valve spring	49.8 mm	1.9 JTD 8V

- Fit the engine oil pressure relief valve and tighten the cap.- Fit the driven gear.- Fit the drive gear.- Fit the oil pump cover and tighten the bolts.

Manually rotate the gears to check that they turn without sticking.