tr7triumph.com

Hello list,

Can anyone advise what the (Leyland Specialist) tool looks like that removes the end plug holding in the steering pinion on a manual Tr7 steering rack?

It's the part labelled "end plug" in fig. 4 of this diagram:

http://vintage.mitchell1.com/PClubData/chassis/chis78/V2I7810106.pdf

My Haynes manual just calls it the "specialist tool", and my TR8 manual naturally doesn't discuss the manual rack...

Thanks in advance.

Craig

TR7V8

Hi Craig, It is special tool 18G 1261

They say if you have S356 A or B Hub remover, you can order additional parts to upgrade them for the job.

Unfortunately none of these appear in the diagrams of special tools in my 1977 Leyland manual.

Hasbeen

That is interesting. I have replaced the steering pinion on a TR7 manual rack and don't have any special tool. Have you checked an actual rack to see what you might need ....

Thanks Hasbeen. I just googled that tool number though, and it turned up zip. Lots of 18G tools, just not that one. And there is a LOT of diversity in those 18G tools so you can't extrapolate...

Jeff, the plug looks just like a threaded donut shaped plug. It appears to have no notches or dimples or anything for any shaped tool to latch onto. And I would have said that if unscrews with just finger pressure it ain't doing its job!

Craig
TR7V8

<blockquote id="quote"><font size="1" face="Century Gothic, Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Craig C</i>

Thanks Hasbeen. I just googled that tool number though, and it turned up zip. Lots of 18G tools, just not that one. And there is a LOT of diversity in those 18G tools so you can't extrapolate...

Jeff, the plug looks just like a threaded donut shaped plug. It appears to have no notches or dimples or anything for any shaped tool to latch onto. And I would have said that if unscrews with just finger pressure it ain't doing its job!

Craig
TR7V8
<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">
Here is a picture of the 18G 1261 tool. I don't remember borrowing one, so perhaps I used a right angled circlip tool that I have?

Thanks Jeff,

That was what I needed to investigate. Judicious wiping with a cotton bud in the "donut hole" between the plug and the pinion shaft removed all the grease and revealed the notches sought. I cut a 9/16 box spanner to leave two 6-7mm long and wide tines. This slipped over the shaft, the tines fitted into the notches and with a bit of leverage the plug unscrewed. Voila; my own 18G 1261!

Then I had to figure out how to remove the pinion that was not going to come out due to the interference fit of the bearing in the housing. Luckily I had an intermediate shaft lying around (Ok it was in one of the many boxes of TR7 parts that I had to sort through...). Putting that on the shaft and fitting the bolt gave me a surface to tap with a hammer and the pinion popped out.

Putting in the fast ratio replacement pinion (7 splines vs 6 of the original), the purpose behind this entire exercise, revealed a problem. The pinion shaft of the new pinion is 15mm not 9/16 so my new tool doesn't fit over the pinion. Grrr. My "modified" box spanner has a 5/8 other end so will modify that end to get the plug fully seated.

Thanks for all the help.

Craig
Tr7V8