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Joined: Dec 2004
Posts: 173 Likes: 1
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Dec 2004
Posts: 173 Likes: 1 |
Per my shop manual the knee action adjustment is made by turning the adjusting plug to give a distance between the bottom of the king pin support and the bottom of the brake flange plate of 4 7/8". About two years ago I set this adjustment when installing the rebuilt knee action units. The motor was installed at that time but the rest of the front end (fenders, etc) was not installed. I now find, after driving the car for several hundred miles that I am about 1 inch lower than rquired so I would like to make another adjustment but I cannot seem to turn the adjusting nut now. I have all the weight off of the front end and have tried jaring the nut loose by using a brass punch and hammer. Are there any tricks to loosening the adjusting nut?
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
You can make a tool by taking a socket that matches the size of the adjusting bar and grinding a slot for the bar to fit into.
I assume that you did loosen the lock nut.
Last edited by Chev Nut; 05/01/09 08:41 PM.
Gene Schneider
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Joined: Dec 2004
Posts: 173 Likes: 1
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Dec 2004
Posts: 173 Likes: 1 |
I have removed the lock strip retaining screw and lock strip. I did make a tool to fit the slot in the adjusting plug (adjusting plug is the nomeclature used in my parts book). When you mention adjusting bar are you referring to the adjusting plug that screws into the main housing cover?
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
Gene Schneider
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Joined: Dec 2002
Posts: 689
Oil Can Mechanic
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Oil Can Mechanic
Joined: Dec 2002
Posts: 689 |
I found the plugs in my '35 are difficult to adjust. I ground a slot in an old impact socket to fit the bar on the plug and freed it up using an impact wrench. Soak the plug first with penetrating fluid. If you can't fit an impact wrench under the car maybe a long breaker bar can get your the torque needed to adjust it.
Also, check you manual. Mine says the adjusting plug should not be turned down further than the top of the housing.
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Joined: Dec 2004
Posts: 173 Likes: 1
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Dec 2004
Posts: 173 Likes: 1 |
I was finally able to get the adjusting nut loose using a long breaker bar on my tool. Once it moved it turned fairly easily - it was just a matter of breaking it loose.
Now I have another question. I have turned the adjustment nut to the maximum recommended in my shop manual (1/8" below the top of the housing cover) but I still do not quite meet the 4 7/8", plus or minus 1/8" recommended dimension on the driver side. The driver side is 4/3/8" and the Passenger side is 4 5/8". I am wondering how critical this is. The car seems to drive and handle ok.
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
I wouldn't worry about it if it was mine. Will compensate for the crown of the road.
Last edited by Chev Nut; 05/02/09 07:43 PM.
Gene Schneider
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