1084B18 ENGINE OIL PUMP, REMOVED - CHECK AT THE BENCH - Lancia - THESIS - eLearn

505994 - 1084B18 Engine oil pump, removed - Check at the bench

) - Position the engine oil pump in the vice fitted with protective jaws.1. Fit the tool.

	Description	Code	Function
1	Counter-torque/Template	1.870.799.000	Oil pump timing

2. Undo the left hand bolt (2a) and remove the oil pump drive chain assembly (2b).- Remove the tool.

	Description	Code	Function
.	Counter-torque/Template	1.870.799.000	Oil pump timing

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

Refitting ( Removing

) - Check the oil pump drive chain assembly for wear and, if necessary, replace it.- Check that the radial clearance between the gears and the pump casing is within the recommended limits; if this is not the case, replace the engine oil pump.

	Subject	Value
.	Engine oil pump	mm
-	Radial clearance between gears and pump casing	0.110 - 0.180

- Check that the endfloat between the top of the gears and the oil pump cover support plane is within the reocmmended values; if this is not the case, replace the enigne oil pump.

	Subject	Value
.	Engine oil pump	mm
-	Endfloat between top of gears and pump casing support plane	0.016 - 0.086

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

	Subject	Value
.	Engine oil pump	mm
-	Height of engine oil pressure relief spring released	49.5
-	Test load	11.73 - 12.51

	Subject	Value
.	Engine oil pump	mm
-	Height of engine oil pressure relief spring released	35
-	Test load	11.96 - 12.76

	Subject	Value
.	Oil pressure relief valve spring	mm
-	Wire diameter	1.8 ± 0.15
-	Outer diameter	11.5 ± 0.10
-	Total number of coils	16

- Fit the oil pressure relief valve and tighten the cap to the recommended torque.

	Value - daNm	Fastening	Component	Ø
.	1.6 - 2.0	Nut	ENGINE OIL PUMP PRESSURE RELIEF VALVE	-

- Fit the drive gear.- Fit the driven gear.- Fit the oil pump cover and tighten the bolts.

	Value - daNm	Fastening	Component	Ø
.	0.8 - 1,2	Bolt	OIL PUMP GEARS COVER

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

- Position the engine oil pump in the vice fitted with protective jaws.1. Fit the tool.

	Description	Code	Function
1	Counter-torque/Template	1.870.799.000	Oil pump timing

2. Fit the oil pump drive chain assembly (2a) so that the references (2b) are aligned and tighten the (left hand) bolt (2c) to the recommended torque.

	Value - daNm	Fastening	Component	Ø
2c	4.5 - 5.5	Bolt (left hand thread)	OIL PUMP DRIVE CHAIN ASSEMBLY	M10