Checking Radial Play Of Crankshaft

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Dismantle bearing cover for shaft journals and remove along with bearing shell.
Clean shaft journal and bearing shell with a lint-free cloth.
Information
- When measuring radial play, do not rotate the crankshaft .
- Plastigage is highly susceptible to damage Insert Plastigage carefully .
- With the Plastigage strip inserted, do not allow any sideways or axial movement of the bearing shells otherwise the measurements may be incorrect (changes to the Plastigage strip) .
Lay the 10 mm strip of red Plastigage on the shaft journal or on the bearing shell. -arrow-

Fig 1: Identifying Plastigage On Shaft Journal
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Fit the bearing cover along with the bearing shell and tighten to the specified Tightening Torque. For details, see → 134819 REMOVING AND INSTALLING CRANKSHAFT
Information
- The Plastigage packaging features a representation of a measurement scale on both sides, one in inches and the other in millimeters. Do not mix up the two of them when measuring .
Remove the bearing cover again and compare the thickness of the Plastigage with the scale on the packaging - see Fig 2-. If the wear limit is reached or exceeded, replace the crankshaft and bearing shells. → 134819 REMOVING AND INSTALLING CRANKSHAFT .

Fig 2: Checking Plastigage Strip Using Scale
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Connecting Rod Bearings (Crankshaft Journals)	Main Bearing (Shaft Journals)
53.968 mm	59.958 mm

Crankshaft	Radial Play Measured Using Plastigage
	New	Wear Limit
Main Bearing (Shaft Journals)	0.02....0.06 mm	0.10 mm