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Joined: Nov 2011
Posts: 42
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Nov 2011
Posts: 42 |
Should my brand new lower (steering knuckle) pins have any play in them. Mine sure do. They are not as bad as the orginals, but I was expecting zero play. Is that just the way it is? Thanks. Joe
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Joined: May 2002
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ChatMaster - 6,000
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ChatMaster - 6,000
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Joe You say new knuckle pins, were the bushes replaced as well (that is what wears the most)? I would think no play (at least that is the way I set them) but should swivel freely. Tony
1938 1/2 ton Hope to drive it before I retire
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Joined: Nov 2011
Posts: 42
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Nov 2011
Posts: 42 |
Outer lower link pins. One of these: http://www.chevsofthe40s.com/detail...ER_OUTER_W_SEALS_PASS_5362_CORVETTE.htmlI've installed it into the A-Arm/steering upright and there just seems to be an excessive amount of play, however, this is my first King-Pin car, so Im not sure what to expect. There is no adjustment to this part.
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Joined: Jul 2008
Posts: 714
Oil Can Mechanic
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Oil Can Mechanic
Joined: Jul 2008
Posts: 714 |
Which way is the excessive play? Side to side? Or up and down? Could be you may have worn out bushings?
Ken's 1940 Special Deluxe Sedan 1970 Cadillac Hearse
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Joined: Nov 2011
Posts: 42
Shade Tree Mechanic
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OP
Shade Tree Mechanic
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The a-arm/steering is off of the car in the Vise. These are BRAND new. That is my question. Should new ones have play?
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Joined: Nov 2001
Posts: 19,757 Likes: 62
ChatMaster - 15,000
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ChatMaster - 15,000
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There should not be any noticeable play between bushing and shaft. There are some "floating" bushings that have some play between housings and shafts. I don't know if this year and application is one of them.
How Sweet the roar of a Chevy four!
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Joined: Jan 2002
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ChatMaster - 25,000
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ChatMaster - 25,000
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The thread between the bushing and pin is not a real tight fit....there will be a very slight amount of play. I will check out a genuine set later and give a reply.
Gene Schneider
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Joined: Jan 2002
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ChatMaster - 25,000
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ChatMaster - 25,000
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A new genuine has several thousands of play. Probably designed that way so greae would flow through . Years ago we sold 10 uppers to every lower. If they get lubed every 1000 miles they will last forever. I use a grease with moly in it for mine.
Gene Schneider
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Joined: Nov 2001
Posts: 19,757 Likes: 62
ChatMaster - 15,000
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ChatMaster - 15,000
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I don't feel that a few thousandths gap between pin and bushing would be noticeable unless paying strict attention. For greased joints 2+ thousandths gap is required for proper lubrication. Oil can be ~ 0.001 and still lube properly.
How Sweet the roar of a Chevy four!
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Joined: Nov 2011
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Shade Tree Mechanic
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Shade Tree Mechanic
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Thank you for the replys, and I was afraid of that. These are new, and there is much more than a few thousands play. I purchased them from a vendor on eBay and am very dissappointed with everything that I've tried to use so far. The bottom bushing requires a 26mm wrench. The bushing for the top pin (screws into the shock A arm) wont even start. The threads are obviously wrong. This is VERY frustrating.
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Joined: Nov 2011
Posts: 42
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Nov 2011
Posts: 42 |
A new genuine has several thousands of play. Probably designed that way so greae would flow through . Years ago we sold 10 uppers to every lower. If they get lubed every 1000 miles they will last forever. I use a grease with moly in it for mine. So when I go to the autoparts store, and grease that has "moly" in it? Do you have a specific recommendation? Thanks. Joe
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Joined: Jan 2002
Posts: 30,700 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
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The tube will say contains moly and it is the grease required by Ford so its easy to find. Get a major brand.
Gene Schneider
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Joined: Nov 2011
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Shade Tree Mechanic
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Shade Tree Mechanic
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Well I returned the kit I purchased from eBay and purchased new uppers and lowers from chevsofthe40s. Guess what. Same problem with the uppers. The bushing wont even start to thread into the upper A arm. (The old bushing hand screws in with no problem.) I had a machinest look at the old and new bushings. Old bushing: .979-OD .957-root thread diameter. New bushing: .985-OD .964-root thread diameter. I haven't called chevs of the 40's yet. Does anyone have a 49-54 bushing that they can measure the OD and root thread diameter on. I have this idea for two reasons: This is the same issue I had with the ones from ebay. (So maybe an entire batch got screwed up at the factory) If I believe the pictures in the chevs of the 40's catalog, the bushings (and seals) look like they are from a 49-54 pin. 39-48 pin: (my original looks identical) http://www.chevsofthe40s.com/detail/8131/Chevrolet_LINK_PINS_UPPER_OUTER_W_SEALS.html49-54 pin: (my new pins have these bushing and seals) http://www.chevsofthe40s.com/detail...ER_OUTER_W_SEALS_PASS_5362_CORVETTE.htmlJoe
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