Try the following two links
1.
http://www.aecmilitant.co.uk/downloads.html
A good way down the page (if all the other goodies have not distracted you) you will find a downloadable copy of "REME Guide to recovery" This may well answer your questions
2.
http://www.raeme.net/toc.php?cat=rec&item=1#article This reproduces 10 pages from "British Machine Tool Engineering, Jan-Feb-Mar 1944" -114 pages were devoted to the then new Corps of REME - But since finding this site I have never been able to find any of the other 104 pages.
Theres enough in those two to make any fan of Reccy Mechs wet his (or her) pants
Cheers
Noel