Okay I managed it.
The easy bit:
1. Jacked car up, put an axle stand under.
2. Remove wheel.
3. Loosened the pivot bolt.
The harder bit:
4. Removed PAS fluid reservoir clamp from inside of RH wing.
5. Fed my 3/8" drive ratchet socket wrench down the side and fitted it onto the adjuster clamp bolt.
6. Spent a long time moving the wrench back and forth to loosen off the adjuster bolt!
Adjustment:
7. Fed a pry-bar down between the block and the
alternator and pushed it out.
8. Jammed a spare spanner between the pry bar and the block to hold tension.
9. Tested the tension.
10. Repeated 7-9 until I reached the "goldilocks zone" (not too loose, not too tight...)
The easy bit:
11. Tightened up the pivot bolt.
The harder bit:
12. Tightened up the adjusterbolt.
Testing:
13. Started the engine, revved it a bit, no squeals, no whining, job's a good'ne.
Putting it back together:
14. Refit PAS fluid reservoir clamp.
15. Remove axle stand, wheel back on, lower jack down, tighten wheel up.
The fun bit:
16. Drive it!
I know other write-ups have said to detach the PAS fluid pipes, but for me they weren't the issue, it was the oil cooler pipes stopping me getting to the adjuster bolt. I left out the faffing around with flexible headed ratchet spanners (funny, they went on the adjuster bolt when I first tried, but not this time! They are a good suggestion and a worthwhile purchase) and loosing the bolt from the PAS fluid reservoir clamp (it got stuck between the
alternator and the block of all places!).
I hope this helps others.
Cheers,
Will