1978 Jota 180 Starter Motor Question

T

Tee Dee

New member
Location
Surrey Hills
I have just removed the starter motor from my 1978 Jota 180, to send it off to Robson and Francis for a refurb. Checking with Tim Parker and Phil Todds Laverda bible, the green book, it states that the triples had Bosch 0 001 160 003 starter motors. Looking at mine its a Bosch but with a part number of 0 001 160 018? Does anyone know what the difference is between these two serial numbers?

Also upon inspection of the starter toothed wheel (starter freewheel?) that sits inside the crankcase, ( which mates to the splined rotor on the end of the starter motor), seems to have a small amount of play in it, is this correct, or should there be no play at all? The play is east to west, if when sitting on the bike north is the headlamp and south is the tail light, if that makes sense? There is no play north to south.

Any help with this would be muchly appreciated.  :)
 
Sometimes we think it's the starter motor but it is Infact the starter clutch.
If in doubt take off and inspect.
  Faulty starter is normally just slow like a flat battery,and maybe a little smoke.
Start clutch will make mechanical noise.
This is my opinion and others will contradict 😘
Happy new year Andy 😁
 
Difference in part numbers could be down to the fact that some starter motors had the gear that interacts with idle gear machined in to the end of the shaft, and others had a removeable gear on the starter motor shaft.

Andy
 
The difference in part #'s MAY be because there are very slight differences between Bosch starters fitted over the years.

Apparently, in an another application, this particular starter had a freewheel/rachet mechanism (all not used and present on the triple) fitted into the drive gear, next to the quick thread throw-out on the shaft .  Other starters have an abbreviated version of that freewheel/rachet housing, possibly causing a "name change" for the part.  In essence, both starters are identical for Laverda triple applications.  Quite possible that other numbers might pop up from other applications, they may even be a drop-in replacement.

Bosch has made millions of components for the automotive industry, no matter how small the deviance, a new or revised part recieved a new number.  The regulator for the 750s is a prime example.  It was made in dozens of versions, for different applications, each has its own number.  Even differences in the mounting bracket called for a new part number.

The Bosch starters for triples all had removable drive gears.  Those with an integral gear, ie, teeth machined in the shaft, were fitted to the 350/500 4-valve twins.

piet
 
Tee Dee said:
Thanks again for all the above info, fantastic to be able to get answers so fast.. Brilliant forum.  :)  Steve I live in Ockham Surrey.
Click to expand...

Second that, there is a wealth of information and help available within these pages and from Laverda owners far and wide,Iit certainly helped me out when I first arrived here as a newbie.
So being Ockham you must be a Newlands corner regular?
 
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