850896 - 1084B18 ENGINE OIL PUMP, removed - Check at the bench

Removing ( Refitting ) - Position the engine oil pump in the vice fitted with protective jaws.1. Fit the tool.
DescriptionCodeFunction
1 Counter-torque/Template1.870.799.000Oil pump timing
2. Undo the (left hand0 bolt (2a) and remove the oil pump drive chain assembly (2b).- Remove the tool.
DescriptionCodeFunction
.Counter-torque/Template1.870.799.000Oil 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.
SubjectValue
.Oil/water pump driveshaft sealmm
-Radial clearance between gears and pump casing0.110 - 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.
SubjectValue
.Oil/water pump driveshaft sealmm
-Endfloat between top of gears and pump casing support plane0.016 - 0.086
- Check that the height of the oil pressure relief valve spring is within the recommended values; if not, replace the spring.
SubjectValue
.Oil/water pump driveshaft sealmm
-Height of engine oil pressure relief valve spring11.96 - 12.76
SubjectValue
.Oil/water pump driveshaft sealmm
-Height released49.5
- Fit the oil pressure relief valve and tighten the nut.
Value - daNmFasteningComponentØ  
.1.6 ÷ 2.0NutPRESSURE RELIEF VALVE ENGINE OIL PUMP-
- Fit the drive gear.- Fit the driven gear.- Fit the oil pump cover and tighten the fixing bolts to the recommended torque.
Value - daNmFasteningComponentØ  
.0.8 ÷ 1.2BoltsOIL/COOLANT PUMP DRIVESHAFT SEAL-
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.
DescriptionCodeFunction
1 Counter-torque/Template1.870.799.000Oil pump timing
2. Fit the oil pump drive chain assembly (2a) and tighten the (left hand) bolt (2c) to the recommended torque.
Value - daNmFasteningComponentØ  
2c 4.5 ÷ 5.5Left hand boltOIL PUMP GEARSM10