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Assessing wear on chain, pulley sets "I” and "II”, bearing "C” and suction-jet pump > < Assessing wear on input shaft

A4 Mk2

Assessing wear on bearing “D”, bearing “E” and bearing “G”
   
Assessing wear on bearing “D”, bearing “E” and bearing “G”
2 - Bearing “D”
q   Roller bearing for pulley set “I”
q   Different versions: with or without inner race
q   Checking → Fig.
3 - Bearing “E”
q   Ball bearing for pulley set “I”
q   Checking → Fig.
4 - Intermediate housing
q   With bearing “G” (roller bearing for pulley set “II”)
q   Checking bearing “G” → Fig.
q   Checking running surface for bearing “G” → Fig.

   
Checking bearing “D” (roller bearing for pulley set “I”)
  Note
Bearing “D” is available in two versions: without inner bearing race or with inner bearing race.
–  Check bearing “D”-item 1- for damage (illustration shows version without inner race):
l  The roller bearings should not exhibit any signs of damage on the surface.
l  There must be no cracks or chips on the bearing cage.
–  Run your finger nail over the entire running surface to assess the damage on the roller bearings.
l  Any very slight scores or damage that cannot be felt with the finger nail can be disregarded.
l  If you feel any scores or damage with your finger nail, or if your nail catches, renew bearing “D”.
–  Also check running surface on pulley set “I” → Fig..
  A37-10734
Checking bearing “E” (ball bearing for pulley set “I”)
–  Check bearing “E”-item 1- for damage:
l  The balls and running surfaces should not exhibit any signs of damage.
l  The ball bearing must not exhibit “rough” running on turning.
–  Also check running surface on pulley set “I” → Fig..
  A37-10785
Checking bearing “G” (roller bearing for pulley set “II”)
–  Check bearing “G”-item 1- for damage:
l  The roller bearings should not exhibit any signs of damage on the surface.
l  There must be no cracks or chips on the bearing cage.
–  Run your finger nail over the entire running surface to assess the damage on the roller bearings.
l  Any very slight scores or damage that cannot be felt with the finger nail can be disregarded.
l  If bearing “G” is damaged, the gearbox must be renewed.
–  Also check running surface for bearing “G” on pulley set “II” → Fig..
  A37-10551

Assessing wear on chain, pulley sets "I” and "II”, bearing "C” and suction-jet pump > < Assessing wear on input shaft