3239074 - 1024A10 crank shaft - r + r with engine removed - check main and connecting rod bearingand replace if necessary

Removing ( Refitting )  - 1020D17  engind front cover - r r . 1. Fit the flywheel lock.

NameCountry
1Counter-torque1.860.846.001
2. Undo the fixing bolts (2a) and remove the clutch (2b).
1. Undo the fixing bolts (1a) and remove the engine flywheel (1b).
1. Remove the flywheel lock.

NameCountry
1Counter-torque1.860.846.001
2. Undo the bolts (2a) and remove the engine flywheel protection (2b).
1. Undo the bolts (1a) and remove the rear crankshaft oil sealling cover (1b).Fit the tool.

NameCountry
-Flange1.860.815.000
Rotate the crankshaft using the tool fitted previously until the cylinder concerned is at B.D.C.1. Undo the bolts (1a) and remove the connecting rod cap (1b).2. Remove the lower big end bearing shell.Proceed in the same way with removing the connecting rod caps and the half-bearings for the remaining cylinders.3. Undo the bolts (3a) and remove the bearing caps (3b).4. Remove the lower main journal half-bearings.5. Remove the crankshaft.6. Remove the upper connecting rod half-bearings.7. Remove the upper main journal half-bearings.8. Remove the thrust washers from the 4th main journal support.
Refitting ( Removing ) Visually inspect the condition of the main journal and connecting rod half-bearings and, if necessary, replace them.Record the main bearing half thickness.

MeasurementValue
-Side crankshaft bearing thickness (mm)Category B1.836 -1.844
Category C1.843 -1.849
Classe A1.831 -1.837
Record the main bearing half thickness.

MeasurementValue
-Connecting rod half bearing thickness (mm)Category B1.530 ÷ 1.534
Category C1.533 ÷ 1.537
Classe A1.527 ÷ 1.531
Measure the clearance between main journals and bearing halves and crankpins and bearing halves using Plastic Gauge.The clearance between bearing halves and journals must be within specified limits.

MeasurementValue
-Big end bearing clearance (mm)crankshaft big end bearings0.030 ÷ 0.056
If the clearance is not within specified limits, replace the main bearings and/or connecting rod bearings as indicated in  - 1004E20  engine - dismantle and re-build following operation 1004e10 - wash and check dismantled parts - re-fit cylinder head and oil sump - does not include repairs to cylinder head and auxiliary unit . Fit the upper main journal half-bearings in the cylinder block/crankcase.Fit the upper connecting rod half-bearings on the connecting rods.Fit the crankshaft on the cylinder block/crankcase.Fit the thrust washers on the 4th main journal support.1. Fit the bearing caps.
The bearing caps have progressive notches (from zero to five starting from the front of the engine) which define their fitting position.
1. Tighten the bearing cap bolts (1a) to the recommended torque using the angular tightening tool (1b).

FasteningComponentØValue(daNm)
1aBoltBIG END BEARING CAPSM12(Engine block side) 2.5 + 100°

NameCountry
1bProtractor1.860.942.000
Rotate the crankshaft using the tool fitted previously until the cylinder concerned is at B.D.C.Fit the connecting rod cap, complete with half-bearing, and fix it using the bolts without tightening them.
The connecting rod caps are fitted so that the number stamped on them is facing the same side as the one stamped on the big end (inlet side).
Continue in the same way when fitting the connecting rod caps for the remaining cylinders.1. Tighten the bolts (1a) for the connecting rod caps to the recommended torque, using the angular tightening tool (1b).

FasteningComponentØValue(daNm)
1aBoltBIG END BEARING CAPSM92.0 + 60°

NameCountry
1bProtractor1.860.942.000
Remove the tool.

NameCountry
-Flange1.860.815.000
1. Fit rear engine block cover (1a) with integrated oil sealing ring and tighten relevant bolts (1b).

FasteningComponentØValue(daNm)
1bBoltFLYWHEEL SIDE COVERM6(Engine block side) 0.9 ÷ 1.2
1. Fit the engine flywheel shield (1a) and tighten the fixing bolts (1b).
Fit the tool.

NameCountry
-Counter-torque1.860.846.001
1. Fit the engine flywheel (1a) and fix it tightening the bolts (1b) to the recommended torque.

FasteningComponentØValue(daNm)
1bBoltFLYWHEELM1214.7 - 21.2
Fit the clutch locating tool.

NameCountry
-Tool for centering clutch1.870.081.000
1. Fit the clutch assembly in its seat.2. Tighten the clutch bolts.

FasteningComponentØValue(daNm)
2BoltCLUTCH ASSEMBLYM82.8
Remove the tool.

NameCountry
-Tool for centering clutch1.870.081.000
3. Remove the flywheel lock.

NameCountry
3Counter-torque1.860.846.000
 - 1020D17  engind front cover - r r