Audi Workshop Service and Repair Manuals

Note:

For performing assembly work, engine is to be attached with engine holder VW 540 to repair stand => Page 10-33.

• Bearing shell
• ◆ For cylinder block with oil groove
• ◆ Do not interchange used bearing shells (mark)
• Chain sprocket
• ◆ For oil pump chain
• ◆ Replacing => Page 13-82
• Bearing shell
• ◆ For bearing cap without oil groove
• ◆ Do not interchange used bearing shells (mark)

• Thrust washers
• ◆ For bearing 3
• ◆ Different versions for cylinder block and bearing cap
• ◆ Note position
• 65 Nm + further 90° (1/4) turn
• ◆ Replace
• ◆ For measuring radial clearance of crankshaft tighten to 65 Nm but do not give further turn
• Bearing cap
• ◆ Bearing cap 1: Pulley end
• ◆ Bearing cap 3 with recesses for thrust washers
• ◆ Retainer tabs of cylinder block/bearing cap bearing shells must coincide

• Sender wheel
• ◆ For engine speed sender -G28
• ◆ Can only be fitted in one position
  -offset holes-
• ◆ Always replace sender wheel if bolts have been unscrewed
• ◆ Removing and installing => Fig.13-76
• 10 Nm + further 90° (1/4) turn
• ◆ Replace
• ◆ Always replace sender wheel if bolts have been unscrewed => Fig.13-76
• Needle bearing
• ◆ On vehicles with manual gearbox
• ◆ Extracting and driving in
  => Page 13-78

• Fitted pin
• ◆ Check projection from crankshaft
  => Fig.13-77
• Crankshaft
• ◆ Axial clearance, new: 0,07...00.23 mm
  Wear limit: 0.30 mm
• ◆ Measure radial clearance with Plastigage
  New: 0,02...0,04 mm
  Wear limit: 0.15 mm
• ◆ Do not turn crankshaft when measuring radial clearance
• ◆ Crankshaft dimensions=> Page 13-81

→ Fig.1    Removing and installing sender wheel

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

Notes:

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

Tightening torque

    1)    Replace bolts

    2)    90°corresponds to quarter of a turn

→ Fig. 2    Checking projection of fitted pin from crankshaft

Projection of fitted pin -3- from crankshaft

• ◆ a =2.5...3.0 mm