Conrad Detonator Operating Instructions Manual page 44

c) Wheel Change
The tyres are glued to the wheel rim to prevent them from coming loose. When the tyre is worn down, the entire wheel
has to be replaced therefore.
The wheels are available pre-assembled, i.e. tyres glued to wheel rims, as spare parts.
If you want to purchase the wheel rims and tyres separately, you still have to glue the tyres to the wheel
rims. A tyre not or improperly glued on may loosen while driving (e.g. in fast curves) or the tyre may turn on
the wheel rim.
Front axle
After loosening of the wheel nut (D), the wheel may be removed from the wheel axle (A).
The wheel tappet nut (C) may be stuck on the inside of the wheel rim. Remove it from the wheel rim.
Replace the wheel tappet nut (C) on the wheel axle. Ensure that the slot in the wheel tappet nut (C) is precisely on top
of the tappet pin (B). The tappet pin (B) is only loosely pushed into the wheel axle (A) and will fall out easily - without
the tappet pin, no force will be transmitted from the wheel axle to the wheel!
Then the wheel is plugged onto the wheel axle (A) so that the hexagon socket on the wheel rim's inside is precisely
pushed onto the wheel tappet nut (C).
Last, screw on the wheel with the wheel nut (D). However, do not apply any force for screwing on. This will require
greater force to turn the wheel, which may damage the drive.
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B
A
D
C
B
D
Rear axle
A
C