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BL45/2K4610 HUB GREASE PLUG
#1
Can it be confirmed that the hubs grease plugs are 3/8 diameter but 26 TPI Whitworth form. Where to get a tap for that odd size?
  (26tpi would normally be 1/4 BSF.

Dennis
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#2
Hi

I don't suppose they are BSPP or BSPT are they ?  1/8 BSPP is a shade over 3/8 diameter and has 28 TPI.
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#3
The holes the plugs are screwed into take a 1/8BSP grease nipple to enable you to (over?) grease the hub bearings
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#4
Tooling as always from Tracy Tools:

Taps and Dies, Reamers & Milling Cutters | Tracy Tools Ltd UK
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#5
Yes 1/8 BSP X 28TPI (should have learned from the steering box Queries).
Fortunately I have taps that size so was able to clean up enough to fit the plug that was not going in.
Dennis
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#6
For those with damaged threads and no tap a wooden plug will suffice. There is no need to rgualrly access. Packed bearings will suffice  for tens of thousands of miles unless wading.
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