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AMX Manual Steering Gear

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Ohio AMX View Drop Down
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    Posted: Aug/14/2019 at 8:28am
From what I've found in the TSM a 1969 vintage manual steering box contained some type of grease. Over the decades it breaks down, turning to liquid, which then leaks out since the box is not designed to contain it. What is the procedure to clean out and repack the steering gear with grease, and what type of grease is recommended for this?
1941 Hupmobile Skylark
1968 Javelin
1969 AMX 290 (first car)
1986 Corvette Pace Car
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tomj View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tomj Quote  Post ReplyReply Direct Link To This Post Posted: Aug/14/2019 at 10:04pm
wouldn't that just be remove, disassemble and rebuild?

1961 roadster american, 195.6 OHV, T5
1968 american, 199ci, T96
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ohio AMX Quote  Post ReplyReply Direct Link To This Post Posted: Aug/15/2019 at 7:10am
Originally posted by tomj tomj wrote:

wouldn't that just be remove, disassemble and rebuild?



Yes, mainly seeking recommendations for the grease.
1941 Hupmobile Skylark
1968 Javelin
1969 AMX 290 (first car)
1986 Corvette Pace Car
AMO# 983
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Post Options Post Options   Thanks (0) Thanks(0)   Quote BrotherBamc Quote  Post ReplyReply Direct Link To This Post Posted: Aug/15/2019 at 7:34am
When I rebuilt my manual steering box I used sticky red grease.

https://www.amazon.com/dp/B000M8O056/ref=nav_timeline_asin?_encoding=UTF8&psc=1


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Post Options Post Options   Thanks (0) Thanks(0)   Quote Trader Quote  Post ReplyReply Direct Link To This Post Posted: Aug/15/2019 at 7:54am
The original was "AMC Chassis Lubricant". I have never seen a breakdown of this but would expect it to be lithium based EP2.
That stated, grease is made from a metal "soap" and oil. Mixing greases can cause chemical reactions that break the lubrication properties down. When you do the rebuild it would be best to flush all remaining grease and document somewhere what you do put in for the next rebuild in 30-50 years:)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mopar_guy Quote  Post ReplyReply Direct Link To This Post Posted: Aug/15/2019 at 7:58am
I remember this subject back in my Mopar days and you should use a moly grease, not a chassis grease. Some people refer moly grease as axle grease or wheel bearing grease. It's usually a finer, or smoother grease than chassis grease. That was years ago so maybe there's some equivalent.

I did a little searching and some guys use John Deere "Corn head" grease. Here's an explanation of it - "The Corn head grease is a #00 grease which is self leveling. All that means is that it will return to level as it sets, normal axle grease will stay where its pushed out of the way, the #00 grease will return to where it started from."

Either way you go the one thing I see in common with all of them is fill the box up all the way so that when it settles or melts, you don't have exposed gears or bearings.

"Hemilina" My 1973, 5.7 Hemi powered Javelin
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Steve_P Quote  Post ReplyReply Direct Link To This Post Posted: Aug/15/2019 at 8:15am
I was going to suggest the gear box grease like the old snapper riding mowers used. It's #00 and is somewhat of a cross between grease and gear oil as far as viscosity; here is the generic:

https://www.amazon.com/Stens-770-123-00-Grease-oz/dp/B001OKBHRK

The "moly" greases are basic chassis type grease with a few percent (low single digits) moly added. A real moly "grease", with high moly content (65%), is thick and would probably cost $1000 to fill a steering box.

I have this moly paste when needed:

https://www.amazon.com/gp/product/B001HWBSJW/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1




Edited by Steve_P - Aug/15/2019 at 8:18am
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Post Options Post Options   Thanks (0) Thanks(0)   Quote billd Quote  Post ReplyReply Direct Link To This Post Posted: Aug/15/2019 at 8:22am
Trader is right-on about mixing types. People have done that and lost axle bearings. I make sure I use the same grease consistently when greasing and don't grab the wrong grease gun after some study on the topic a few years ago. 

And Mopar_guy is right on the greases, too - having farmed and serviced all types of machinery, combines, back hoes, trenchers, boom trucks, augers, grain drying equipment, and more..... ever pulled a bearing and seen a stiff ridge of grease?

There's moly, lithium, etc. etc. 

Check this out as a starting point - 
https://www.machinerylubrication.com/Read/29658/multi-purpose-grease

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ohio AMX Quote  Post ReplyReply Direct Link To This Post Posted: Aug/15/2019 at 4:48pm
I'm a bit concerned that a semi-liquid type of grease may immediately begin leaking out. The self-leveling aspect does sound important though.
1941 Hupmobile Skylark
1968 Javelin
1969 AMX 290 (first car)
1986 Corvette Pace Car
AMO# 983
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tomj Quote  Post ReplyReply Direct Link To This Post Posted: Aug/16/2019 at 8:49pm
thanks everyone for the discussion on steering gear grease! i had no idea.

i'm about to rebuild the manual steering gear in my 68 American. it's operable, but 197,000 miles on it.  i've not done a recirculating ball type, only the old worm and sector types.

where to get a rebuild kit for it? rockauto lists rebuild kits but they seem to be for power gears, though will shortly try to disambiguate the kits they do list.

any hints on tearing into these things?

1961 roadster american, 195.6 OHV, T5
1968 american, 199ci, T96
sr-ix.com

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