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♦ Cracks or tears in belt profile and on reverse side (cracks, core
fractures, cross-sectional fractures)
♦ Layer separation (top layer, cord strands)
♦ Fraying of cord strands
♦ Foreign objects in belt profile and reverse side
♦ Excessive traces of oil and grease on rollers and pulleys
♦ Flank wear on pulleys (material wear, frayed flanks, surface
cracks); see -illustration-
– If faults are found: Renew poly V-belt ⇒ Rep. gr. 13 ; Cylinder
block (pulley end); Removing and installing poly V-belt .
Continue installation in reverse sequence.
Note
The example given here shows possible damage to a pulley. The
appearance of other types of material wear on the load-bearing
flanks of the ribbing can be different.
3.47
Spark plugs: renewing
4-cyl. petrol engine 2.0 ltr. TFSI hybrid
6-cyl. petrol engine 2.5 ltr. FSI, 3.0 ltr. TFSI
8-cyl. petrol engine 4.0 ltr. TFSI
8-cyl. petrol engine 4.2 ltr. FSI
12-cyl. petrol engine 6.3 ltr. FSI
3.47.1
4-cyl. petrol engine 2.0 ltr. TFSI hybrid
Special tools and workshop equipment required
♦ Spark plug socket and extension - 3122B-
Audi A8 2010 ➤
Maintenance - Edition 11.2014
3. Maintenance
85