petemick2 July 2012 at 18:40 #49394
Anybody who has battled with very brittle mazak brush holders on V12 engines might like this steel copy we cut from a steel billet. Not cheap but pretty!h142 July 2012 at 19:01 #49395
Nice job…only the V12 starter doesn’t have a mazak brush holder. Just checked my spare, & as I thought, Herr Bosch wouldn’t stoop so low as to use mazak in his machine. Now, if we’re talking Mr Berkshire, now he made a fine mess of the wiper motors with this cr*p metal.
So, next question…what starter motor do you have fitted? The correct original is a Bosch axial starter. Incidentally the brush holder is made up of laminated steel rivetted together.
Laurencepetemick3 July 2012 at 17:29 #49396
Starter motor numbers from case BJG12/12 RS19 R Bosch A-G might be 6 . Looks like a Bosch motor to meh143 July 2012 at 20:49 #49397
Yes, certainly Bosch. Both my starters are BJH 18/12 RS42, which I understand is the factory equipment. My notes state that the “18” can be another number.
I’d say that yours could be the nearest viable replacement supplied by Bosch once stock ran out…but then I thought mazak fatigue was a pre-war thing. Intriguing. Obviously the important issue is that it starts your engine. Mine simply states “BOSCH” with their symbol; “R Bosch A-G” would indicate a different period of manufacture
I’ve found Bosch very helpful, although I gather they threw all remaining spares for these starters in the 1970s. They did email me detailed exploded diagrams and parts lists…if you like I can email copies on to you, pm me your email address if so.
A thought…Bosch could probably tell you what the original vehicle/s were fitting your starter…in which case it’s just possible the relevant owners club could supply, or know sources of, spares should you need other parts. I’d certainly like to know where to get brushes from for mine!
You must be logged in to reply to this topic.