BERG E-Gran Tour Mode D'emploi page 13

cuts, cracks and bulges). Watch out: damage to tyres and rims can cause accidents! Tyre pressure
should be at least 2.0 bar with a maximum of 2.2 bar (remember that pressure increases with high
temperatures). If the tyres are at the correct pressure, the vehicle will run easily and smoothly. At
too low a pressure, the tyres will puncture faster and there will be excessive wear and tear.When
the tyre pressure is too high, the tyre may pop of the rim. This can lead to dangerous situations.
(Watch out -pressure rises in bright sun and high temperatures!) Tyres should not come into con-
tact with oil, grease and fuel. Make sure that the valve caps are always fitted to the valves.
4.3 Steering
The steering mechanism should be regularly oiled in order to operate smoothly. The steering
mechanism should be checked monthly for the following:
• Breakage, wear and tear and / or damage to all components of the steering mechanism.
• Tightness of screws.
4.4 Chains
The chains need greasing regularly to run smoothly.If the chains are too tight the vehicle will
be hard to pedal, and there is a high chance that the axles will break. If the chains are not tight
enough, however, they can easily come off the sprockets, and damage can be caused to the chain
guard. The chains are tensioned as described below. To tension the chains:
• Loosen off screw A and nut B.
• Tighten the chain using nut C.
A
Watch out: Do not pull it too tight! By pushing the chain down firmly with your thumb you should
be able to move it 3 cm or so. Remove the chain guard to check this. Retighten A,B and C.
4.5 Adjusting the cranks when running in a new GranTour
After using the GranTour (a few days of intensive use up to two weeks normal use), the bolts
fastening left and right-hand cranks should be tightened up. Note: this needs to be 'hand tight' ,
i.e. with a maximum torque of 30 Nm. You can also contact your dealer. He will be happy to do
this for you. (It is normal for the crank fittings to bed in after a short period in use as a result of the
forces on the pedals. An additional effect of this is that some play can develop, which could result
in some damage to the crank and the spindle. This play can be eliminated by tightening the bolts
further).
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