Audi Workshop Service and Repair Manuals

Note:

When working on the engine, it should be secured to the engine stand using the engine bracket VW 540.

• Thrust washers
• ◆ For bearing 3
• ◆ Different versions for cylinder block and bearing cap
• ◆ Note fixing arrangement
• Bearing shell
• ◆ For cylinder block with oil groove
• ◆ Do not interchange used bearing shells (mark).

• Crankshaft
• ◆ Axial clearance new: 0.07...0.17 mm
  Wear limit: 0.37 mm
• ◆ Check radial clearance with Plastigage
  New: 0,03...00,08 mm
  Wear limit: 0.17 mm
• ◆ Do not rotate the crankshaft when checking the radial clearance.
• ◆ Crankshaft dimensions
  
• Bearing shell
• ◆ For bearing cap without oil groove
• ◆ Do not interchange used bearing shells (mark).
• Thrust washers
• ◆ For bearing 3 bearing cap
• ◆ different versions for cylinder block and bearing cap
• ◆ Note fixing arrangement

• 65 Nm + 1/4 turn (90°) further
• ◆ Replace
• ◆ When measuring radial clearance of crankshaft, tighten to 65 Nm but do not turn further.
• Bearing cap
• ◆ Bearing cap 1: Pulley end
• ◆ Bearing cap 3 with recesses for thrust washers
• ◆ Bearing shell retaining lugs (cylinder block/bearing cap) must be on the same side.
• 10 Nm + 1/4 turn (90°) further
• ◆ Replace
• ◆ Always renew sender wheel if securing bolts have been unscrewed
  => Fig.1

• Needle bearing
• ◆ Pulling out and driving in
  => Page 13-82
• Sender wheel
• ◆ For sender for engine speed sender -G28
• ◆ Can only be installed in one position. Holes are off set
• ◆ Always renew sender wheel if securing bolts have been unscrewed.
• ◆ Removing and installing => Fig.1
• Fitted pin
• ◆ Check projection from crankshaft => Fig.2

→ Fig.1    Removing and installing sender wheel

• ‒ Always renew sender wheel -2- if securing bolts -1- have been unscrewed.

Notes:

• ◆ If the securing bolts are tightened a second time, the seats for the countersunk bolt heads in the sender wheel will be distorted to such an extent that the bolt heads will come into direct contact with the crankshaft -3- (-arrows-) and the sender wheel will only fit loosely under the bolts.
• ◆ The mounting holes are asymmetrically spaced, so it is only possible to install the sender wheel in one position.

Tightening torque

    1)    Renew bolts

    2)    90°corresponds to a quarter turn

→ Fig.2    Checking projection of fitted pin from crankshaft

Projection fitted pin -3- from crankshaft

• ◆ a =2.5...3.0 mm