I am trying to get the system to work. Installed new cable and ignition lock cylinder. I can turn the lock cylinder and pull out the key with the shifter in any position. Could something be broke in the column ? Thanks for any help Bob
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Re: 71 trans interlock system
There must be a problem within steering column because the key cannot, should not, be removed unless the lock lever going to trans. is in the upper most position as it would be when in reverse position on a 4 speed transmission. Steve -
Re: 71 trans interlock system
I agree, but what could have broke ? Does the column have to come out? I can't seem to find any info on how it works in the column. I pulled up jim shea paper on interlock systems 69-76 doesn't give to much info on the column. BobComment
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Re: 71 trans interlock system
Thanks for the reply. No, I don't think it was working. there was no cable and the ignition lock cylinder was broken . You could pull the key out with the car running. Installed a new cylinder and cable. I don't know what to look for. Thanks BobComment
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Re: 71 trans interlock system
Robert first take a look at your steering column just fwd of the fire wall there is a lever that has 2 positions full down and full up I don't remember which is the lock position I think up. See if the lever is connected to the cable from the trans.
1. If not check for all the components for the lock system are there
2. a. cable b. support/guide at trans side cover c. at trans case/tail shaft bolt a mounting bracket for the cable and a Mickey Mouse clip d. and the cable connected to the reverse trans lever e. at the steering column the cable is connected to steering column support bracket also with a Mickey mouse clip and to the lever.
If you have an AIM there is a set of complete instruction for installing and adjustment of the lock system. You can move the lever at the steering column to the locked position by hand if the cable is disconnect to see if the lock in the column is working. Also under your steering wheel is a small ring that numerous holes in it and a pin that will engage the ring when the wheel is turned and the lock is in the locked position that pin is what actually locks your steering wheel.
Paul 18046Comment
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Re: 71 trans interlock system
Paul, I have the cable disconnected, and have the lever in lock. I can turn the cylinder and pull out the key. The car is on ramps so I am not able to turn the front wheels. Are there two different interlocks one for the key and one for the steering wheel ? BobComment
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Re: 71 trans interlock system
Hi Bob. How are you? I too had issues getting mine hooked up. When I got the car, the cable was packed in a box with all the usual stuff that gets torn off over the years, like ignition shielding, TCS, etc. Without the cable, you will be able to turn the key to OFF and remove it in any gear.
I had to take mine to my mechanic and he got it without trouble. I think he lowered the column to install/adjust and then lifted it back into place afterwards. Does this sound right to others here?
If you want to use a life line, PM or call me and I'll give you his contact info. He's near you.Don Lowe
NCRS #44382
Carolinas ChapterComment
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Re: 71 trans interlock system
Hi,Don ,I'm doing OK how are you. I have Dave's no. I am trying to find out how these works in the column and what can be done. I had it apart once . I can't find a lot of info on it. BobComment
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Re: 71 trans interlock system
Robert the pin that locks the steering wheel also when it moves up to lock the steering wheel also locks ignition key cylinder will not allow it to rotate. From what you are saying sounds like there is damage to your ignition lock cylinder to have the key removed at anytime and not lock. Sounds like your problems are located right there in the column.
Paul 18046Comment
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Re: 71 trans interlock system
Paul, I installed a new lock cylinder. do you have to turn the wheel to line up the pin with the hole ? BobComment
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Re: 71 trans interlock system
It is not the locking pin that locks the steering wheel that keeps the lock cylinder from moving. You have the tail waging the dog.
When the cable moves the lever on the lower end of the steering column to the UP position (about 2 o'clock viewed from drive position), the lever rotates the shift tube inside the column. This rotates the shift bowl (hidden inside the plastic shroud) and opens a gate that allows the lock cylinder to be rotated from the engine OFF position to the OFF-LOCK position where the locking pin now extends up and locks the steering wheel.
The lock cylinder positions are as follows (rotating CCW): START (spring loads to the RUN position; detents to the engine OFF position; detents to the OFF-LOCK position when lower lever is UP; push the lock cylinder in toward the column and rotate to the ACCESSORY position.
With the column lever in any position but full UP, you should only be able to rotate the igniiton key and lock cylinder from START, to RUN, to OFF. Moving the lever the full UP position , should allow you to rotate further to the OFF-LOCK and finally to ACCESSORY.
JimComment
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Re: 71 trans interlock system
I reciently worked on a 69' camaro that has basically the same design steering column, after replacing a second new repro key lock, I found that the plastic gear that actuates the brass mating toothed rod to make column plate lock was not in the one and only mating position that will work properly, just in case someone had the column apart before and failed to properly reassemble. SteveComment
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Re: 71 trans interlock system
With the lever up, pushing the cylinder in, it is very hard to turn to accessory. I can pull out the key and lock the ignition with the lever in any position. I installed a new cylinder . Could I have installed it wrong ? I want to thank you guys for all the help. BobComment
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Re: 71 trans interlock system
Robert
Jim said it much better then I did about the ignition lock cylinder, pin and lever. I was trying to say that all of these items work together to lock the steering wheel and key assembly when the lever is up and the cylinder is in the locked and off position that should be the only time you should be able to remove the key from the cylinder. You have stated that you can remove the key at any position the ignition cylinder is in. Does the steering wheel and cylinder lock when the trans is in reverse, ignition cylinder lock/off position and the steering wheel lock pin is through one of the slots in the locking ring (you may have to move the steering wheel slightly). If it is locking with the lever in any position and the key can be removed in any position you have more then one problem going on here. Do you you have and shop manual also is it a standard or tilt column if not Jim has a web site that may help you. Here it is jimshea.corvettefaq.com/?page_id=4.
Paul 18046Comment
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