Toyota 2CT Engine Repair Manual
There is an Autodata manual (£50) which covers the 2CT engine. It gives, for example, additional torque information.
The "Russian manual" which is often mentioned - Autodata Moscow published manuals in Russian for Townaces etc 1985-95, and in 2002 for "1985-96". They are very cheap (£5?) but can't be obtained from Autodata UK, and their usefulness depends on how long you've got to decipher the Russian text.
The Toyota "Van" available in USA is very similar to a Townace. The 1988 Toyota RM079U manual for that is available online on the Toyota Van USA website. There is also an 1988 electrical wiring diagram manual for that, EWD041U.
JPNZ New Zealand have published several editions of a Townace Owners Handbook (very old, old) which is available from UK distributors Euro-Spec2000, UK and Import Handbooks, UK.