• The Roadster Factory Recovery Fund - Friends, as you may have heard, The Roadster Factory, a respected British Car Parts business in PA, suffered a total loss in a fire on Christmas Day. Read about it, discuss or ask questions >> HERE. The Triumph Register of America is sponsoring a fund raiser to help TRF get back on their feet. If you can help, vist >> their GoFundMe page.
  • Hey there Guest!
    If you enjoy BCF and find our forum a useful resource, if you appreciate not having ads pop up all over the place and you want to ensure we can stay online - Please consider supporting with an "optional" low-cost annual subscription.
    **Upgrade Now**
    (PS: Subscribers don't see this UGLY banner)
Tips
Tips

Steering Box Adjusting Bolt Lock Nut

Jerry

Darth Vader
Gold
Country flag
Offline
I am working on a BJ8 and the locking nut is toast. It has been ground off half way by someone. Does anyone know the thread on adjusting bolt for the steering box?

thank you
 
Last edited by a moderator:

gonzo

Jedi Warrior
Country flag
Offline
Re: thread on the lock nut for the adjusting bolt on Steering box?

I believe the steering box adjustment peg is secured with a jam nut which is typically lower in profile and about half the size of a conventional nut of same threading. Yours just might be correct. Is the nut ruined or damaged in any way so that it's not locking the peg properly? Gonzo
 
OP
J

Jerry

Darth Vader
Gold
Country flag
Offline
Re: thread on the lock nut for the adjusting bolt on Steering box?

It is damaged enough that you would not be able to get it loose once the car is together. And yes it is the half profile nut I am asking about.
 

gonzo

Jedi Warrior
Country flag
Offline
Re: thread on the lock nut for the adjusting bolt on Steering box?

Understood. Not knowing thread size, suggest you pull the peg and take it to local hardware store for a correct size jam nut - alternatively purchase from your favorite supplier. Good luck.
 

steveg

Yoda
Gold
Country flag
Offline
Re: thread on the lock nut for the adjusting bolt on Steering box?

Jerry,

Guessing here as I don't have my car right now... nut and screw are "NA" in Moss catalog. I'm guessing they're an obsolete whitworth pattern. AH spares sells the screw for a hefty price - but not the nut.

Suggest buying used from British Car Specialists - David Nock handles the used stuff.

PS - if you can measure the thread count and diameter, you could look up the spec on one of the British fastener charts online and maybe get a nut from:
https://britishfasteners.com/
 

BoyRacer

Jedi Warrior
Country flag
Offline
Re: thread on the lock nut for the adjusting bolt on Steering box?

Jerry, I sent you a PM. Call me
 

CraigC

Jedi Trainee
Country flag
Offline
Jerry, if you haven't located one, I probably have one but will have to do a little digging tomorrow to confirm.
 
OP
J

Jerry

Darth Vader
Gold
Country flag
Offline
If you think it is whitworth threads, I have a kit of tap and dies for that. I will check to see if I have anything that large. The nut at present is on the peg and stuck. I think it will break before it will unscrew.

Richard, I will call this morning to get your advice.
 
OP
J

Jerry

Darth Vader
Gold
Country flag
Offline
Richard thinks the tpi is close to 20tpi. I checked my dies. BSF, BSW, Metric and nothing matches. It is very close to 1/4 pipe thread. Also to m14 x 2.0. . But none of those are close enough that they would not ruin the peg.
Jerry
 

CraigC

Jedi Trainee
Country flag
Offline
Jerry, quite unlikely that it is Whitworth or metric. I'm heading down to check my spares stash shortly. Can I assume that due to the nut problem the adjusting screw is stuck in the steering box cover?

EDIT: just checked and I have a couple pegs and nuts. Major diameter of peg is approx .510" and has between 18.5 and 19 tpi. This seems to indicate it is 1/4" BSP. Rather odd for the usage.
EDIT2: little further digging and it may be an obsolete M13 thread.

Jerry, I pm'd you my phone number. I can get whatever you need into the mail today or tomorrow.
 

red57

Jedi Knight
Country flag
Offline
I have no idea what thread it is.

the flats (wrench size) measure 18mm across, the threaded stud measures about .510/13mm,
I have no thread gauge that matches... it's somewhere between 18 and 20 tpi and none of my metric thread gauges seem to match.

I do have one though, along with the stud - last summer I bought a couple of steering boxes on eBay trying to find a rebuildable one - no joy, but it has left me with some spare parts :smile:

The only way I have to ship it is priority mail because I happen to have a box here and some stamps (I won't go near a post office because of the virus).
Down side is USPS website says $8:30 for postage - if you want to pay the postage, it's yours. Just PM me a mailing address.
IMG_3894.jpg

Dave
 
OP
J

Jerry

Darth Vader
Gold
Country flag
Offline
thanks Dave, the previous lister Craig is sending me a nut. He only lives a few hours away! Great Forum.

Jerry
 
Similar threads
Thread starter Title Forum Replies Date
doc50 Adjusting play on steering box? Other British Cars 5
Geo Hahn TR2/3/3A Steering Box Adjusting Screw Triumph 12
drambuie Adjusting steering box with shims Austin Healey 6
R TR2/3/3A Jammed Steering Box Triumph 10
R TR2/3/3A Steering Box Gaskets Triumph 4
JAV For Sale non adjustable steering box Austin Healey Classifieds 3
W BN1 Steering Box Removal Austin Healey 11
Martinld123 Steering Wheel Alignment [Lost centering on steering box 1956 Austin Healey, BN2] Austin Healey 14
W BN1 Steering Box Austin Healey 3
Martinld123 Steering Box Leak Austin Healey 27
TomMull TR2/3/3A Steering Box Cam or Worm Triumph 18
W BN4 Steering box bushing. Austin Healey 2
Gundog61 BN2 Steering Box Leak Austin Healey 2
bighealeysource Changing Steering Box Lube (BN2) Austin Healey 9
B TR2/3/3A TR3a steering box rebuild Triumph 19
T For Sale - 1961 TR3A Steering Box Triumph Classifieds 8
BoyRacer Replace BN1 steering box with later version? Austin Healey 0
TAS525 TR2/3/3A Steering Box Rebuild? Triumph 19
Walter74 Steering Box End Play Austin Healey 2
J Experience with High Ratio Steering Box? Austin Healey 15
Jayplum TR2/3/3A Steering Box end play Triumph 6
Michael Oritt Steering box lube Austin Healey 22
K TR2/3/3A The steering box again? Triumph 9
I Ball Bearing cup for old style BN1 steering box Austin Healey 0
C 1962 Healey 3000 Mark II Steering Box Austin Healey 9
M TR2/3/3A Steering Box Rocker Shaft Bushing Reaming Triumph 4
T TR2/3/3A Steering box oils - grease ? Triumph 20
K TR2/3/3A Steering box install again...the collar with the pinch bolt? Triumph 9
T TR2/3/3A Question on torquing nut on steering box rocker shaft Triumph 8
K TR2/3/3A Steering box fluid again.... Triumph 2
T TR2/3/3A Requesting help on removing TR3A steering column and box Triumph 21
R TR2/3/3A Oops...Steering Box Situation Triumph 7
Csarneson Early BN4 steering box pitting Austin Healey 16
D TR2/3/3A steering box question Triumph 1
doc50 58 Metropolitan Steering Box Leaks Other British Cars 0
AH67 Wanted Wanted steering Idler Box & Arm Austin Healey Classifieds 3
Bob_Spidell Steering Box Replacement Austin Healey 76
B Steering box BJ8 Austin Healey 5
T TR2/3/3A TR-3a Steering Box rebuild question Triumph 3
doc50 Nash metro steering box question Other British Cars 1
L Tight spot on steering box is way off Austin Healey 18
R TR2/3/3A Lube for steering box, transmission and rear end Triumph 6
K TR2/3/3A Penrite semi fluid steering box lube? Triumph 14
B Outer steering column connection to the steering box Austin Healey 6
simon1966 Steering box lubricant Austin Healey 17
S TR2/3/3A Suspension Rebuild & Steering Box Triumph 4
M BN1 "in-site" steering box overhaul ? Austin Healey 4
Got_All_4 TR2/3/3A Has anyone tried this new steering box top plate Triumph 14
K TR2/3/3A Steering Box Triumph 2
M BJ8 Steering box removal Austin Healey 8

Similar threads

Top