Go Back   The Ford Barn > General Discussion > Model A (1928-31)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 01-17-2021, 06:11 PM   #1
john charlton
Senior Member
 
john charlton's Avatar
 
Join Date: May 2010
Posts: 994
Default 7 Tooth steering box tip .

There is a quick tip to decrease steering box lash in the dead ahead position . In RHD cars there is good access to the box but in LHD cars the starter motor could present access problems but I dont think so .
Put the steering wheel in the dead ahead position . Remove the Pitman arm . Remove the three bolt triangular cover plate . Depending what lube is in the box watch out for a lube spill and take suitable precautions . Gently tap the sector shaft inwards until the sector clears the worm .Note the sector position keep it like that .Rotate the steering wheel a true half turn and tap the sector back into engagement . Pack the box with whatever lube you prefer and bolt the cover plate back on if the paper gasket is OK if not renew . Replace the Pitman arm .The worm is "double start" and now the sector is meshed with what was the less worn other side of the worm . The trade off is that there will be more lash when the steering wheel is half a turn away from dead ahead but the Ackerman geometry will load against lash so you in practise should not find any difference . I dont think I would be the first to pass this tip on so you might find no improvement this means a previous owner has beaten you to it . In some cases it does remove appreciable ahead lash and it is quick (and cheap) to do !!!

John still very locked down in Suffolk County England .

Last edited by john charlton; 01-17-2021 at 06:16 PM.
john charlton is offline   Reply With Quote
Old 01-17-2021, 06:44 PM   #2
Russ/40
Senior Member
 
Russ/40's Avatar
 
Join Date: May 2010
Location: Santee, California
Posts: 3,340
Default Re: 7 Tooth steering box tip .

Very clever, wish I knew that before I went to an F100 box.
Russ/40 is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 01-17-2021, 08:35 PM   #3
nkaminar
Senior Member
 
nkaminar's Avatar
 
Join Date: Jan 2012
Location: Western North Carolina
Posts: 299
Default Re: 7 Tooth steering box tip .

Hey John, Great tip. Thanks.
__________________
A is for apple, green as the sky.
Step on the gas, for tomorrow I die.
Forget the brakes, they really don't work.
The clutch always sticks, and starts with a jerk.
My car grows red hair, and flies through the air.
Driving's a blast, a blast from the past.
nkaminar is offline   Reply With Quote
Old 01-17-2021, 08:48 PM   #4
Synchro909
Senior Member
 
Synchro909's Avatar
 
Join Date: Jun 2014
Location: Melbourne, Australia
Posts: 5,531
Default Re: 7 Tooth steering box tip .

Makes sense to me!
BTW, I use eccentric bushes for the sector shaft to get zero play when I assemble a 7 tooth steering box. I think a similar result could be achieved if the bushes could be moved after assembly, but they are not.
__________________
Yesterday is History.
Tomorrow is a mystery.
Enjoy Today.
Synchro909 is online now   Reply With Quote
Old 01-18-2021, 05:27 AM   #5
john charlton
Senior Member
 
john charlton's Avatar
 
Join Date: May 2010
Posts: 994
Default Re: 7 Tooth steering box tip .

Hi Synchro ,In the past RHD 7 tooth steering box parts were not available . My local specialist did an exchange service . The sector shaft was turned down to true and an eccentric bush made to suit .This was machined to a slip fit in the housing and rotated to adjust then locked with "Locktite" As RHD parts are now available they do not offer the service anymore as no need .

John in very cold not like you !!! Suffolk County England .
john charlton is offline   Reply With Quote
Old 01-18-2021, 05:02 PM   #6
Synchro909
Senior Member
 
Synchro909's Avatar
 
Join Date: Jun 2014
Location: Melbourne, Australia
Posts: 5,531
Default Re: 7 Tooth steering box tip .

Sponsored Links (Register now to hide all advertisements)
Quote:
Originally Posted by john charlton View Post
Hi Synchro ,In the past RHD 7 tooth steering box parts were not available . My local specialist did an exchange service . The sector shaft was turned down to true and an eccentric bush made to suit .This was machined to a slip fit in the housing and rotated to adjust then locked with "Locktite" As RHD parts are now available they do not offer the service anymore as no need .

John in very cold not like you !!! Suffolk County England .
John, I fully understand how the RHD parts supply is intermittent, if you can get them at all. I use eccentric bushes as a matter of course to get the best possible fit. The last set of 7 tooth gears I bought from Sammy were excellent. I'm sure they would have been fine with ordinary bushes.
Your solution would be OK but did it get tight once you were off the straight ahead position?
__________________
Yesterday is History.
Tomorrow is a mystery.
Enjoy Today.
Synchro909 is online now   Reply With Quote
Old 01-19-2021, 06:29 AM   #7
john charlton
Senior Member
 
john charlton's Avatar
 
Join Date: May 2010
Posts: 994
Default Re: 7 Tooth steering box tip .

Hi Synchro . On the few I have done they have worked just fine no tightness lock to lock .

John in same weather locked down Suffolk County England .
john charlton is offline   Reply With Quote
Old 01-19-2021, 10:52 PM   #8
LEM
Member
 
LEM's Avatar
 
Join Date: Jul 2014
Location: Everett, Wa
Posts: 50
Default Re: 7 Tooth steering box tip .

..... Rotate the steering wheel a true half turn and tap the sector back into engagement......

Does it make any difference which way you turn the steering wheel?
LEM is offline   Reply With Quote
Old 01-20-2021, 03:48 AM   #9
john charlton
Senior Member
 
john charlton's Avatar
 
Join Date: May 2010
Posts: 994
Default Re: 7 Tooth steering box tip .

A half turn either way it makes no difference .

John in windy storm "Cristoph" Suffolk County England .
john charlton is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 09:59 PM.