Michael,
I may be mistaken but I believe that the early cars did not have the front
hub dust cap tool.
The Clausager book notes that the.... *"Front hub dust cap extractor added
to tool kit" * Chassis number *148935* Dec. '53.
The bottom line is that your car should have BSF threads and not UNF
threads. Most likely changed early in the cars history, but who really
knows.
Cheers,
Curt
On Wed, Aug 13, 2014 at 7:29 AM, Michael Salter <michaelsalter@gmail.com>
wrote:
> I'm slowly assembling a tool kit for #174 and I have a question.
> The tools supplement of the guidelines includes the following note.
> "Because the earlier dust cap's BSF stud threads were changed to UNF by
> December, 1953, this tool only was made with UNF threads, and will not work
> on earlier 100s "
> Although both the dust caps on #174 were UNF thread and appeared to be
> undisturbed I was quite happy to accept this until I found, upon reading
> through the handbook for my car Publication Number 996, dated September
> 1953, on page 53 the following:
> "*Front Road Wheel Hubs*: Unscrew the knock-on hub cap and, using the
> extractor provided, withdraw the grease cap from within the hub."
> Well September 1953 is a good long time before December 1953.
> I have also checked the parts book and found that there is only one number
> for the dust cap, 1B4316, and that is applicable to all cars and one number
> for the extractor tool, 1B4339, also applicable to all cars.
> I do note that there is an Austin Service Journal Reference associated with
> the extractor (24 Tools Pg2).
> Does anyone out there have a copy of this edition of the Austin Journal
> which may shed light on this anomaly?
> Many thanks,
> Michael S
> BN1 #174
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