Thursday, October 23, 2014

How To Handle GM Lock Retainer

Many automotive locksmith technicians who had the chance to work with a lot of GM door locks, probably found loose, broken or distorted wafer spring retainer. Many of them probably had to do call backs regarding those vehicles on cylinders that were serviced where the retainer dislodged from the plug even after staking. I have found a solution to the problem that will prevent technicians form the hassle of going back to the same job for support.

I use a second retainer leg, that was modified by me and installed alongside the loose end of the first retainer. To make this second retainer leg work, I used a grinder to grind the leg of the retainer to a knife edge. Next, I inserted the modified retainer leg alongside the loose retainer and slowly tap it down all the way. That will effectively wedges the loose retainer in place. If required, I sometimes use one of my modified retainer legs on both ends of the first wafer retainer. Then I will break off the rest of the retainer flush with the plug.

Sometimes it would be necessary to file or grind the leg down in order to get it even with the top of the plug. Once the broken edges were smoothed out of the retainer and its easy to tell they are even with the edge of the plug, the key and the plug would need to be inserted into the cylinder making sure the plug rotates without binding, or hanging up. If it does, reassemble the lock and re-install it in the vehicle.

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