Alan
Further comments.
Your number 2/ and 3/ below were the same.
I have found that some Gold Seal BMC gearboxes had the old gear set
fitted. I believe that it was decided that the so called improved gears
were not much better than the originals.
The part number stamped on the laygear is not the same as the finished
item part number as found in the parts list. The numbers in square
brackets below are those stamped on the laygear
DESCRIPTION OLD PART NEW PART
Laygear with bushes 1B 3481 [1B 3474], 1B 3693 [1B 3694]
Regards
>
>John is right, but it's actually more complicated than that. there
>are 4 types of gears commonly used in BN1 boxes:
>
>1) Very Early BN1 used one set
>2) All other BN1s used another set with a slightly revised helical
>angle (this gear is in probably about 90% of the boxes out there)
>3) A third set which was an attempt by the factory to fix weak third
>gear and were sold as a complete set to replace gear sets in broken
>boxes (and used in gold seal repaired boxes)
>4) Gears stolen from A90 Atlantic boxes which was very common in
>Australia and NZ, as they had lots of derelict A90s and a
>disproportionate number of BN1s vs other models on the road.
>
>Best thing to do is to let us know the part number on the current
>laygear then and only then can it be properly matched.
>
>Best,
>
>Alan
>
>On Wed, Jun 4, 2008 at 6:05 AM, John Harper <ah@jharper.demon.co.uk> wrote:
>> Jack
>>
>> Just a word of caution. There are two versions of the laygear and the
>> VIN may not be a good guide because there were conversion sets available
>> to fit to early types.
>
--
John Harper
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