Changing timing belt and noisy hydraulics

[Brian Mole]

> > I can understand using 2084 to make sure that the cam and crank pulleys do
> > not vary from TDC if one does not use the screwdriver trick, but why would
> > one have to retorque the retainer bolt unless the oil pump was being
> removed
> > for check or replacement?
>
> 'Cos you can't get the belt off without doing so.  It's obvious that the
> block casting is deliberately designed to force this.  The pulley has to
> come off - you can't get the belt out otherwise.

Apologies for the daft question but why does the pulley have hex-bolts
holding it to the sprocket? On 4-cylinder cars, these allow the pulley
to be 'split', thus permitting removal of belt without removal of centre
bolt.

Brian