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BL45/2K4610 HUB GREASE PLUG

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BL45/2K4610 HUB GREASE PLUG
Dennis Nicholas Offline
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Joined: Aug 2017 Posts: 471 Threads: 61
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Location: West/North Devon England
#1
23-03-2022, 05:46 PM
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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John Cornforth Offline
Sevenner since 2002
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Location: Hampshire UK
#2
23-03-2022, 07:05 PM
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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David Stepney Offline
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Joined: Jan 2019 Posts: 1,481 Threads: 17
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Location: Bala North Wales
Car type: 1933 RP Standard Saloon
#3
23-03-2022, 10:02 PM
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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Parazine Offline
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Location: North Wiltshire
Car type: 1927 Chummy, 1926 Top Hat 1938 Big Seven 1/2 a Trials Chummy
#4
23-03-2022, 10:36 PM
Tooling as always from Tracy Tools:

Taps and Dies, Reamers & Milling Cutters | Tracy Tools Ltd UK
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Dennis Nicholas Offline
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Joined: Aug 2017 Posts: 471 Threads: 61
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Location: West/North Devon England
#5
23-03-2022, 10:38 PM
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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Bob Culver Offline
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Joined: Aug 2017 Posts: 2,748 Threads: 31
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Location: Auckland, NZ
#6
24-03-2022, 04:36 AM
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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