OLD AND NEW SERVICE MANUALS OF VARIOUS KINDS
http://www.factoryautomanuals.com/search.php?mode=search

The following is a link to a general Toyota truck maintenance manual for early trucks including 1970-1978 pick-ups, 1979-1988 Pick-ups and 4Runners, 1971-1988 Land Cruisers,

1L, 2L, 2L-T, 8R-C, F, 2F, 3F-E, 18R-C, 20R, 22R, 22R-E, 22R-TE, and 3VZ-E engines

http://aarc.epnet.com/application/8578/8578.htm

1993 Factory Service Manual for Pick-ups and 4Runners:

http://personal.utulsa.edu/~nathan-buchanan/93fsm/

There is alot of overlapping information with 4Runners. It's missing six pages that I know of, but other than that, it's complete.

Missing pages are MT1-77 from Manual Transmission R150 & R150F section, pages SA36 - SA39 in the 4WD section of the Suspension and Axle section, and SR38-SR39 in the Steering section.