Page 53 - Catalog spare parts BPW brake disc

Auto Parts / Page 52 BPW-EL-TSB 31231601e
6 Wheel studs

General

BPW wheel studs
The wheel nave (or wheel disc) connects the rim to
the wheel hub. It must absorb the vertical, lateral and
longitudinal forces which arise and transmit them to the
wheel hub via the wheel studs (wheel bolts).

BPW axles with disc brakes are suitable for wheels with
either bolt or hub centring, and with a few exceptions
they are all supplied with helical bolts.

Helical studs are easy to maintain and connect the brake
drum to the hub using a pressfi t. As a result, there is no
need for internal nuts.

The hub bore is not damaged even after several removal/
installation operations (in contrast to the situation with
splined studs) and the clamping forces for the wheel
studs remain constant.

The prescribed BPW tightening torques for wheel
attachment are listed in the current BPW maintenance
instructions and must be observed.

Assembly of the wheel bolts

The helical bolt is inserted from the rear through the hole
in the brake disc / hub.

Then a sleeve is pushed over it, a wheel nut is applied
and the wheel bolt is drawn into its fi nal position.

 It is important to ensure that the fl attened
head of the wheel bolt sits correctly!

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