| Author | Message | ||
     Alan Dibley Frequent User Username: alsdibley Post Number: 72 Registered: 10-2009 |
While browsing some old threads I came across the problem of pendulum lever failure. How can I tell if my car has UR13344 (the original) or UR17106 (the beefed-up version) retro-fitted? They look the same in the catalogue and the picture shown in the antique thread does not give a useful idea of the size of the new or old part. I looked at mine and it has ears on the input boss where the picture shows ears on the old-style one only. The catalogue shows ears on both parts. Mine looks fairly 'butch' but..... Alan D. (SBH10630 which is before the new style fitted as standard,) | ||
| Mark Herbstreit Prolific User Username: mark_herbstreit Post Number: 167 Registered: 5-2005 |
Tee one Topics edition 56 page 810 has a picture of both | ||
| Alan Dibley Frequent User Username: alsdibley Post Number: 73 Registered: 10-2009 |
Thank you Mark. What confused me was that the catalogue shows the new lever has ears. My car has the old-style lever and is about to get a new-style one fitted ASAP. Alan D. | ||
| John Beech Grand Master Username: jbeech Post Number: 414 Registered: 10-2016 |
OK, I give up, what's a pendulum lever? | ||
| Patrick Lockyer. Grand Master Username: pat_lockyer Post Number: 1429 Registered: 9-2004 |
John, [Pendulum lever] more commonly known as the Pitman Arm or Pitman Drop Arm or just Steering Box Drop Arm. Years ago I did a mod on my original arm, put some sort of posting with pix on the forum. Don't worry to much as they only let go on slow speed maneuvers if not checked. I made a tool for removal as the arm from memory is on a splined taper. A fluid can be used for crack testing before any modifications. | ||
| John Beech Grand Master Username: jbeech Post Number: 416 Registered: 10-2016 |
Wow, these cars have a history of Pitman arm failure? Hmmm, the only steering when that happens is prayer, right? I suppose I can break out my Magnaflux Spotcheck kit but I wonder if I can clean it well enough to preclude having to first remove the arm . . . probably not, grrr. Maybe I'll first try to determine if I have the small or the large joint before I fret overly much (as Patrick suggests). Thanks for the info! | ||
| David Gore Moderator Username: david_gore Post Number: 2606 Registered: 4-2003 |
John, Make a packed lunch and have at least two full containers of your favourite beverage at hand before opening the following thread link - all you need to know and lots of superfluous irrelevant speculation about cracked pitman arms plus some very relevant photos showing the cracks together with the redesigned arms to solve the problem. A classic instance of fatigue failure discovered a considerable time after the release of the Silver Shadow and rectified by a manufacturing change to eliminate stress concentration factors inherent in the original design. http://au.rrforums.net/forum/messages/17001/1707.html?1107428696 * | ||
| Patrick Lockyer. Grand Master Username: pat_lockyer Post Number: 1434 Registered: 9-2004 |
And to conclude the mod after nearly 17 years. First in my old posting I am not so sure about the torquing of the nut, once the mod is done a quick check on any movement is observed by paint and centre pop marks. Some pix of the mod showing some rust on the nut so maybe should have put some black paint on.    | ||
| David Gore Moderator Username: david_gore Post Number: 2614 Registered: 4-2003 |
Thanks Pat for the update - certainly brings closure to what I consider to be the most contentious and acrimonious topic on this forum. |
