Not a book again, but there's a DVD produced by Bovington Tank museum on restoring Tiger 131, it's rather good & even now you feel for the maintenance chap as he explains the limited access in the engine compartment and the vagaries of the Maybach.
It can be bought via the excellent 'Tiger Journal' website covering the restoration;
The Tank Museum, Bovington UK - Restoration of Tiger Tank 131, captured during World War II or at the museum itself.
(If you like Tigers and haven't seen the site I strongly recommend clicking 'The Journal' and immersing yourself in one of the most interesting Tiger resources on the Internet
).
& here's some video of the big beast (which needed a fair bit of tender loving care on the day) at 2006's Tankfest taken by my brother:
YouTube - Tiger 131 Backing Up
YouTube - Tiger
Talked to one chap who'd flown his family over from Spain that morning to see it & was going back that night & another who'd come from Italy for the week... The Tiger certainly can inspire a strange devotion.
Cheers,
Adam.