what steering coupler?
Thread Starter
Le Mans Master
Joined: Jul 2006
Posts: 8,117
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From: charlotte north carolina
what steering coupler?
i've got a steering gear with a round shaft (no flat) and power steering. the parts manual only shows a part # 7806391 for use with non-ps. i need both sides what part # do i need?
thanks
thanks
Le Mans Master
Joined: Jul 2000
Posts: 6,001
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From: Saginaw Michigan
7806391 It is still available through GM dealers. So you should be able to find it for less money at other Vette suppliers. I recommend that you request that it is a genuine GM part.
Jim
Jim
Thread Starter
Le Mans Master
Joined: Jul 2006
Posts: 8,117
Likes: 104
From: charlotte north carolina
thanks, jim
i was concerned about the power vs. non-power steering notation in the parts catalogue. i couldn't understand why it would make a difference, but i'm not an engineer!
i was concerned about the power vs. non-power steering notation in the parts catalogue. i couldn't understand why it would make a difference, but i'm not an engineer!
Le Mans Master
Joined: Jul 2000
Posts: 6,001
Likes: 113
From: Saginaw Michigan
There shouldn't be a power versus non-power issue. The same manual steering gear and the same flexible coupling is used on all C3 vehicles regardless if it is power or not.
The only real change was the addtion of a flat on the gear input shaft which occurred sometime during the 1969 model year. The addition of the flat on the gear shaft dictated a matching flat on the flexible coupling flange as well.
A flexible coupling with a flat will only install on a gear with a flat on the input shaft. A flex coupling with a full round machined flange will install on either gear shaft.
Jim
The only real change was the addtion of a flat on the gear input shaft which occurred sometime during the 1969 model year. The addition of the flat on the gear shaft dictated a matching flat on the flexible coupling flange as well.
A flexible coupling with a flat will only install on a gear with a flat on the input shaft. A flex coupling with a full round machined flange will install on either gear shaft.
Jim
Team Owner
Joined: Jan 2006
Posts: 37,637
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From: Crossville TN
The other 'option' is to machine a flat on that column shaft with a die grinder or belt sander. You need to align that flat with the steering wheel in the 'straight up' position. If there are other [better] ways of determining correct alignment of that flat, maybe J. Shea can offer his knowledge on that. Putting a flat on your shaft is a simple process.
Le Mans Master
Joined: Jul 2000
Posts: 6,001
Likes: 113
From: Saginaw Michigan
Most of the time, the steering wheel being straight up would also mean that the steering gear is exactly on center. However, with our cars being 30 and 40 years old, (and most of us not knowing all of the service history), it is best to set the gear exactly on center before attacking the input shaft with a die grinder.
With the gear out of the car. Rotate the input shaft so the gear rotates full lock to full lock. Count the exact number of revolutions of the input shaft. Starting at full lock rotate exactly one half of the full number of revolutions back to center. This will place the gear exactly on center.
When trying to center the total steering system. You always want to start by placing the steering gear on center. Then work up the steering column to the steering wheel. Then work through the linkage to the tie rods and steering knuckles.
Jim
With the gear out of the car. Rotate the input shaft so the gear rotates full lock to full lock. Count the exact number of revolutions of the input shaft. Starting at full lock rotate exactly one half of the full number of revolutions back to center. This will place the gear exactly on center.
When trying to center the total steering system. You always want to start by placing the steering gear on center. Then work up the steering column to the steering wheel. Then work through the linkage to the tie rods and steering knuckles.
Jim
