volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Measurement Specifications|Page 1324 > < Lifter / Lash Adjuster, Valve|Service Precautions|Page 1318
Page 1
background image

Connecting Rod Bearing: Specifications
Measurement Specifications

Connecting Rod Radial Clearance [1]:

New ........................................................................................................................................................................  0.01-0.06 mm (0.0004-0.0024 in.)
Wear limit ...................................................................................................................................................................................  0.12 mm (0.0047 in.)

Connecting Rod Axial Clearance [2]:

New ........................................................................................................................................................................  0.05-0.31 mm (0.0020-0.0122 in.)
Wear limit ...................................................................................................................................................................................  0.37 mm (0.0145 in.)

Checking Torque ..........................................................................................................................................................................................  30 Nm (22 ft lb)

Connecting Rod Journal Diameters [3]:

Basic dimension:

Connecting rod ...................................................................................................................................................................  47.80 mm (1.8819 in.)

1st undersize (0.25 mm)

Connecting rod ...................................................................................................................................................................  47.55 mm (1.8720 in.)

2nd undersize (0.50 mm)

Connecting rod ...................................................................................................................................................................  47.30 mm (1.8622 in.)

3rd undersize (0.75 mm) 

Connecting rod ...................................................................................................................................................................  47.05 mm (1.8524 in.)

Tolerance limits ..........................................................................................................................  -0.022 mm to -0.042 mm (-0.00087 to -0.00165 in.)

_____________________________________
[1]:  When checking radial clearance, lubricate the contact surface of the nut before tightening. When checking, tighten the nut to 30 Nm (22 ft lb)
[2]:  If connecting rod radial clearance is excessive, the crankshaft connecting rod journals should be checked. If the crankshaft journal diameters are
within specifications, recheck radial clearance using new bearing shells.
[3]:  The journal diameters given are nominal diameters and not actual measured dimensions.

Measurement Specifications|Page 1324 > < Lifter / Lash Adjuster, Valve|Service Precautions|Page 1318