timing belt replacement on 2004 Volvo XC90

During 105,000 mile service our dealer said he'd have to remove the axle to replace the timing belt. Is that unusual and what should that extra work cost?

Asked by for the 2004 Volvo XC90
The CV axle does not need to be removed. There is a plastic access cover to the crank pulley - which can be fold up.
I'd suggest to replace ALL THE TIMING COMPONENTS, not only the belt.
The tensioner, idler pulley, water pump front crank, cam and rear cam seals just as important as the belt. The bad thing is, for the seal replacement the crank and the cams has to be locked by a special tools into the service position, which will kind of doubles the labor time, however that would be the correct timing service.
Very helpful. Thanks so much!
1 more answer , 1 more comment
Total cost with timing belt, tensioner, idler pulley, water pump and labor $665.56. The axle does not have to be removed for timing belt replacement. Water pump is recommended. Hope this helps.

Thanks for your advice!