30/ENGINE - WORK ON INDIVIDUAL PARTS 102
20.11Checking the radial clearance of the bottom connecting rod bearing
Info
Perform the operation on both connecting rods.
200455-10
– Position the bearing shells. Insert the Plastigauge measuring strips offset by 90°
from the bearing joint.
Plastigauge measuring strips (60029012000) ( p. 196)
– Position the connecting rod bearing cap. Mount and tighten the screws.
Guideline
Screw, conrod bearing M10x1 Step 1
25 Nm
(18.4 lbf ft)
Step 2
30 Nm
(22.1 lbf ft)
Step 3
90°
Info
Do not twist the connecting rod.
– Remove the connecting rod bearing cap again. Compare the Plastigauge measuring
strip with the specifications on the packaging.
Guideline
Connecting rod - radial clearance of lower conrod bearing
New condition 0.030… 0.060 mm (0.00118…
0.00236 in)
Wear limit 0.080 mm (0.00315 in)
Info
The width of the Plastigauge measuring strips indicates the bearing play.
– Clean the parts.
20.12Checking/measuring the cylinder
200472-10
– Check the cylinder bearing surface for damage.
» If the cylinder bearing surface is damaged:
– Change the cylinder and piston.
– Measure the cylinder diameter at several places on the contact surface in the
and axes using a micrometer to check for oval wear.
Guideline
Cylinder - bore diameter
Size I 103.000… 103.012 mm (4.05511…
4.05558 in)
Size II 103.013… 103.025 mm (4.05562…
4.05609 in)
200474-10
– Cylinder size is marked on the side of the cylinder.
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