Cooper L4-16L (N12) Crankshaft Main Bearing Specs
Crankshaft Main Bearing: Service and Repair
11 21 531 Replacing all crankshaft main bearings (N 12)
Special tools required:
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11 4 470
Important:
Modified assignment of bearings.
Bearing (1) is at the output end (clutch end)
Determine main bearing colours; the designations on the crankcase and crankshaft are always required and can only determined using the
table.
Necessary preliminary tasks:
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Remove crankshaft.
Installation:
Bearing shell (1) with lubricant groove must be fitted in crankcase upper section.
Bearing shell (2) without lubricant groove must be fitted in crankcase lower section (bed plate).
Important:
Modified assignment of bearings.
Bearing (1) is at the output end (clutch end)
Bearings (1 to 5).
Bearing (2) is a guide bearing.
Important:
Clean sealing surfaces.
Do not clean sealing faces with a metal-cutting tool.
Clean sealing faces with special tool 11 4 470 only.