Is the Haynes manual for typ89 of any use to B4 owners?

[Robert Stirrat]

Listers, I have badly worn brakes pads and discs on my 80 B4 (scoring
sound).  I would like to try and tackle the job myself to help keep costs
down.  Can anyone tell me if the Haynes manual for the typ89 would be of
value in general for carrying work such as this, or do the parts of these
cars differ greatly?  I also have an inoperative temp guage which I'd like
to troubleshoot (I'm sure I smelt burning this morningon my way to work).

Yours anxiously,
                         Robert Stirrat