198002105 - 1084B18 ENGINE OIL PUMP, REMOVED - CHECK AT BENCH

Removing ( Refitting ) 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).5. 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 driven gear and pump casing (mm)	0.080 ÷ 0.186	1.9 JTD

- 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 ÷ 0.070

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 limit valve free spring (mm)	49.8	1.9 JTD

Measurement	Value	Validity
Height of engine oil pressure limit valve spring under load of 8.78 - 9.66 daN (mm)	36.0	1.9 JTD

- Place the oil pressure relief valve in position and tighten the cap to the recommended torque.

Component	Fastening	dia	Value (daNm)	Validity
Engine oil pressure relief valve	Plug	-	1.6 ÷ 2.0	1.9 JTD

- 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.