Volkswagen Touran Service Manual: Foreign Object Damage
| Driving over hard, pointed objects like nails, screws and
the like can pierce the tire. |
| This always leads to tire damage. |
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| Damage from Imbedded Foreign Bodies |
| Frequently, the foreign object
-marking- is so securely embedded in the tire that it
will not free itself even at higher speeds. Due to this, it can
act as a plug and seal the tire relatively well. The result is
gradual loss of pressure which the driver does not notice
immediately but which can lead to sudden and complete tire
failure. |
 Note
| No repair should be attempted on steel belted tires of which
the structure has been punctured by a foreign body. |
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Disintegrated Tread
| Tires with Torn-Out Tread |
| Such damage usually develops over a longer period of time.
If an already damaged tire is exposed to high stress, the
centrifugal force at higher speeds can tear components off the
tire. |
| Illustration shows a tire with torn-out tread due to driving
with insufficient tire pressure. |
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A swelling in the flank of the tire indicates that the
substructure of the carcass has been damaged.
Typical ...
The most common causes of failure are small external damage,
a defective valve or a leaky rim due to corrosion or damage.
...
Other materials:
Wheel, Balancing, Tire and Wheel Radial and Lateral Run-Out, Checking
Before beginning balancing, the following requirements must
be fulfilled.
The tire pressure must be OK.
The tire profile must not be worn on one side. The tire
profile must be at least 4 mm.
...
Electrical childproof lock
Fig. 28 In the driver door:
buttons for the electrical childproof lock
First read and observe the introductory information
and safety warnings The electrical childproof lock prevents
the rear doors from being opened from the inside, e.g. so that children cannot open
the doors acciden ...
Service fluids and consumables
First read and observe the introductory
information and safety warnings All service fluids and
consumables, e.g. toothed belts, tyres, coolant, engine oil, spark
plugs and vehicle batteries, are being constantly developed. For this reason,
service fluids and consumables should be replaced ...
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Tire Sidewall Swelling
Tires, Damage from Low Tire Pressure