SKF Timing Belt Kits - SKF.com

Failure analysis overview
If you hear noise coming from the water
pump, it could be for one of the following
reasons:
1. Wear in the impeller spindle shaft bearing assembly
due to foreign particles through grease loss.
2. Airlocks, due to an improperly purged cooling system.
3. Bad coolant forms coating on mechanical seal giving
rise to noise.
Auxiliary drive system
Multi-V belt
Common causes of failure:
1. Damage to the timing system, causing an engine
breakdown.
2. Overheating, if it is water pump driven.
3. Loss of power steering.
4. Dead battery, i.e. non-operational alternator.
5. In the long term the stop/start mechanism will not
function, thus the car will not function if the belt
breaks when the car is in the stop mode.
Damage from other components can also be the cause
of the system failure – mounting brackets, damper
units, and injection/water pumps.
Tensioner and idler
Common failures often follow similar patterns to the
timing system tensioners and idlers. However, the metal
parts are more prone to corrosion and material debris
due to their low position on the engine in relation to
the road. Any damaged covers will allow this material to
enter.
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3. Wrong/bad coolant
1. Damage to the timing system
The driver of a car with a broken multi-V belt could be left with a
non-functioning alternator, loss of power steering or, in the worst
case, even a belt that has entered the timing system resulting in
engine breakdown.
Note: For more detailed information on troubleshooting and failure analysis see pages 86 thru 88.
Loss of power steering.
Tensioner bracket and shaft has become
misaligned due to heavy belt load.