1084B18 ENGINE OIL PUMP, REMOVED - CHECK AT BENCH - Fiat - NUOVA 500 - eLearn

312002408 - 1084B18 ENGINE OIL PUMP, REMOVED - CHECK AT BENCH

) 1. Undo the cap (1a) and remove the oil pressure relief valve (1b).2. Undo the bolts (2a) and remove the engine oil intake duct (2b) complete with gasket (2c).

1. Undo the bolts (1a) and remove the oil pump cover (1b).2. Remove the drive gear.3. Remove the driven gear.

1. 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 (mm)	0.1÷ 0.23	1.3 Mjet

- 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 (mm)	0.025 ÷ 0.075	1.3 Mjet

- 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 5.44 - 6.02 daN (mm)	36.0	1.3 Mjet

1. Fit the crankshaft front oil seal (1a) using the tool (1b).

Tool	Description	Function	Validity
1.860.878.000	Fitting tool	Fitting crankshaft front oil seal	1.3 Mjet

- Place the driven gear in position.- Place the drive gear in position.- Fit the oil pump cover in its housing and tighten the bolts.

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

- Position the intake duct complete with gasket in its housing and secure it using the bolts.- Place the oil pressure relief valve in position and tighten the cap.