Was doing the transmission and diff oils today, when... what is this thing? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Entroper · 03-04-2013, 01:24 AM

It's got threads on the end of it, but it appears to be a GNDN (goes nowhere, does nothing). Anyone know what this is and what purpose it serves?

Sportsguy83 · 03-04-2013, 02:40 AM

Quote:

Originally Posted by Entroper

It's got threads on the end of it, but it appears to be a GNDN (goes nowhere, does nothing). Anyone know what this is and what purpose it serves?

Rack & Pinion?

Touge Monster · 03-04-2013, 04:00 AM

Looks like an inspection plug

Entroper · 03-04-2013, 04:37 AM

Quote:

Originally Posted by Sportsguy83

Rack & Pinion?

That's what it's on, but I'm referring specifically to the threaded circular opening there. Which appears to be closed off about an inch inside.

JP · 03-04-2013, 04:40 AM

it's for steering rack yoke pre-load adjustment.

superpilun · 03-06-2013, 06:11 PM

Yup, it basically pushes the rack (the straight part) against the pinion (the gear that turns when you turn the steering wheel) so that there is no play between the gears. There is a spring underneath that thing you're pointing at (technically that's probably the cover, but the adjustment is there). You can tighten it and compress the spring more, and in doing so, you can adjust the force the rack and pinion is pushed together. Too tight and steering becomes too stiff. Too loose and there may be play. It's usually adjusted with an in-lb torque indicator to the specs called out for in the service manual. Feel free to correct me if I'm wrong.

Jeff Lange · 03-06-2013, 07:59 PM

Definitely for steering rack pre-load. You'll probably never need or want to touch it.

Jeff

Dake · 03-07-2013, 12:45 AM

Looks like a left-handed sammoflange.

whataboutbob · 03-07-2013, 12:48 AM

Is that Agent Scully?

buckets · 03-07-2013, 01:52 AM

Quote:

Originally Posted by whataboutbob

Is that Agent Scully?

im sure agent mulder isnt too far away.

GerryL · 03-12-2013, 12:40 AM

Basically thats the access port needed for manufacturing. Most will never be used again after being put in service, but an adjustment could be done there, and then a new press in cap fitted, if needed.

03-04-2013, 04:00 AM	#3
Touge Monster Senior Member Join Date: Jun 2012 Drives: 85 AE86 Hatch, 92 SW20 , 13 GT86 Location: San Francisco Posts: 317 Thanks: 149 Thanked 97 Times in 61 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Looks like an inspection plug __________________ Living life one HPDE at a time

03-06-2013, 07:59 PM	#7
Jeff Lange Senior Member Join Date: Dec 2011 Drives: 1986 AE86 GT-S, 2011 Lexus IS250 6M Location: Calgary, Canada Posts: 661 Thanks: 136 Thanked 361 Times in 161 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Definitely for steering rack pre-load. You'll probably never need or want to touch it. Jeff __________________ 2011 Lexus IS350 F-Sport 6MT with LSD 1986 Toyota Corolla GT-S Supercharged

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03-04-2013, 04:40 AM	#5
JP Backyard Fabricator Join Date: May 2012 Drives: JZX83, SF5 GT, ZZE82 turbo Location: Australia Posts: 303 Thanks: 47 Thanked 166 Times in 83 Posts Mentioned: 40 Post(s) Tagged: 0 Thread(s)	it's for steering rack yoke pre-load adjustment.

03-06-2013, 06:11 PM	#6
superpilun Member Join Date: Feb 2013 Drives: 1986 MR2 Location: California Posts: 25 Thanks: 0 Thanked 11 Times in 5 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Yup, it basically pushes the rack (the straight part) against the pinion (the gear that turns when you turn the steering wheel) so that there is no play between the gears. There is a spring underneath that thing you're pointing at (technically that's probably the cover, but the adjustment is there). You can tighten it and compress the spring more, and in doing so, you can adjust the force the rack and pinion is pushed together. Too tight and steering becomes too stiff. Too loose and there may be play. It's usually adjusted with an in-lb torque indicator to the specs called out for in the service manual. Feel free to correct me if I'm wrong.

03-07-2013, 12:45 AM	#8
Dake Senior Member Join Date: Aug 2012 Drives: FR-S Location: Houston Posts: 1,078 Thanks: 468 Thanked 832 Times in 420 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Looks like a left-handed sammoflange.

03-12-2013, 12:40 AM	#11
GerryL Member Join Date: Dec 2012 Drives: White BRZ Location: San Diego Posts: 53 Thanks: 8 Thanked 6 Times in 5 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Basically thats the access port needed for manufacturing. Most will never be used again after being put in service, but an adjustment could be done there, and then a new press in cap fitted, if needed.

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