Bedienungsanleitung Kalkhoff 2021 (Seite 49 von 70) (Englisch)

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Originalbetriebsanleitung Allgemein EN-49

25.1 Measuring and adjusting the chain

tension

Information

If the bicycle chain is too tight, pedalling will require

greater eort. The constant tension on the chain links

will also increase wear on the chain. You can tell if

your bicycle chain is not tensioned enough because

the chain will visibly sag, or jump o when riding over

uneven ground. If this is the case, the chain should be

tightened as soon as possible.

25.1.1 Derailleur: measuring the chain

tension

On derailleurs, a spring in the

rear derailleur keeps the chain

at the correct tension. If the

chain still sags, this can be due

to a dirty chain tensioner. If

the chain is still too loose after

you have cleaned the chain

tensioner, the spring in the rear

derailleur may be faulty. If this

is the case, the rear derailleur

must be replaced. Please contact your cycle dealer.

25.1.2 Hub gear: measuring the chain tension

1. Pedelec: Remove the battery.

2. Press the chain up or down at its tautest point. The

correct tension is reached when the chain sags.

3. Check the chain at four or ve points over a complete

revolution of the chain.

Fig. 107 Chain tensioner

25.1.3 Hub gear: adjusting the chain tension

1. Pedelec/S-Pedelec: Remove the battery.

2. Undo the rear wheel nuts.

3. Remove the brake anchor as required.

4. Pull the rear wheel back in the drop-outs until the

chain just has the permissible amount of play.

5. Carefully tighten all bolts in a clockwise direction to a

torque setting of 35 - 40 Nm. Make sure the wheel is

retted straight.

25.2 Checking for chain wear

1. Pedelec/S-Pedelec: Remove the battery.

2. Check chain wear using a chain wear gauge.

3. Have the chain replaced by your dealer if it is worn.

25.3 Cleaning and care

Notice

Damage to the electronics due to water ingress.

▪Do not spray the bicycle or its components, either

with a water hose or with a high-pressure cleaning

device. Although the components are sealed,

damage to the cycle may still result. Clean the bike

with a soft damp cloth.

Remove the battery before cleaning the chain on an

S-Pedelec or Pedelec. Then, roughly brush the bicycle

chain and chain tensioner with a soft brush. You can then

remove the old chain oil with a dry cloth. Now you can oil

the chain. We recommend high-quality chain oils, used

sparingly. Apply the oil to the lower chain from above,

turning the crank as you do so. Then, turn the crank further

and shift through all gears in the derailleurs.

26. Belt

Warnings

Pedelec/S-Pedelec: serious bruising due to accidental

actuation of the On button.

▪Remove the battery before taking measurements,

setting or cleaning your Pedelec/S-Pedelec.

Serious injury caused by worn or damaged belts.

▪Check the belt for signs of wear before every trip 

26.3 Checking the belt for wear Page EN-51. A worn or

damaged drive belt can break.

Notice

Destroyed belt due to incorrect use.

▪Do not kink, twist, bend backwards, turn over, knot

or bind together the belt.

26.1 Measuring the belt tension

There are various ways to measure the tension of the drive

belt. One of these is the Carbon Drive app, which measures

the tension based on the natural frequency (Hz) of the belt

length. You can download the app from gatescarbondrive.

com/products/tools.

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