View Full Version : Bulletproof Toyota IFS Idler Arm

Bradey Bunch
07-16-2015, 07:06 PM
Hi all

When I bought my truck the idler was ready to fall off, it's a known weak point blah blah blah. Being a RHD truck, idler arm options are somewhat limited, but still available (total chaos, stock with brace etc). I figured I could do better for cheaper. Picked up a LHD steering box for cheap, which is easier to find than a RHD idler arm, and usually cheaper. I'm definitely not the first to do this, but I've yet to see any actual documentation. Anyway, I'll let the pictures do the talking:

Rough Cut:
http://i994.photobucket.com/albums/af64/bradey_bunch/20150611_185327_zpsbqvklyzg.jpg (http://s994.photobucket.com/user/bradey_bunch/media/20150611_185327_zpsbqvklyzg.jpg.html)

Grinding Pitman Shaft
http://i994.photobucket.com/albums/af64/bradey_bunch/20150611_185330_zpszmzpa559.jpg (http://s994.photobucket.com/user/bradey_bunch/media/20150611_185330_zpszmzpa559.jpg.html)

Weld 'Er Up
http://i994.photobucket.com/albums/af64/bradey_bunch/20150615_101622_zpswt7nrcaa.jpg (http://s994.photobucket.com/user/bradey_bunch/media/20150615_101622_zpswt7nrcaa.jpg.html)

http://i994.photobucket.com/albums/af64/bradey_bunch/20150712_133204_zpsfwfpmpem.jpg (http://s994.photobucket.com/user/bradey_bunch/media/20150712_133204_zpsfwfpmpem.jpg.html)

http://i994.photobucket.com/albums/af64/bradey_bunch/20150615_101613_zpsb7zukghc.jpg (http://s994.photobucket.com/user/bradey_bunch/media/20150615_101613_zpsb7zukghc.jpg.html)

Basically here's how I did it:

-Completely disassemble the box
-Grind the teeth off the pitman shaft to allow clearance
-Cut off excess box/power piston housing
-Weld unused holes shut and grind
-Weld in cover to prevent dirt contamination of needle bearings
-Install zerk fittings between each set of bearings (2 zerks total)
-Test fix box BEFORE reaming centre link EDIT: FJ80 tie rod end reamer

So in the end you've got an idler arm that is fully rebuildable, supported by 3 huge sets of needle bearings and uses the larger pitman arm ball and stud. It is a tight fit due to the power steering pump and line location. This would be doable without cutting up the box but one would have to re route the PS lines at least, if not relocate the PS pump as well.

Anyway, hope someone finds this useful. It's probably more likely to be used on another RHD truck but could be applied to a LHD truck easily.


07-16-2015, 10:55 PM
well done

07-16-2015, 10:58 PM
Very cool I have been thinking of something like that using a rhd box to cut up

07-17-2015, 01:41 AM
That's thinking outside of the steering box

07-17-2015, 07:52 AM

dirka dave
07-20-2015, 12:31 AM