Dear Amarin,

Hope you're well. You're surely correct as to the pressures involved. A fix - if the steel next to the pin hole is not corroded - is fine, if it works. If not, no harm done, except for expended time and energy.

As to replacing the hose, Volvo VADIS - the superseded dealer parts/service database - shows that the pressure hose for the CAM/TRW Rack is Part #9157221, which has been superseded by part #9191449. In North American markets, the Manufacturer's Suggested Retail Price (MSRP) is about $203. For the Koyo Rack, the part is #6819375, for which the MSRP is about $166. So near as I can tell, these hoses are still available from Volvo North America.

Thus, your sound advice - that hose replacement is entirely worthwhile - can be pursued using a Volvo brand part.

If robertmfranklin cannot repair the pin-hole, a new hose would seem to be readily available.

Hope this helps.

Yours faithfully,

Spook