Tip & How-To about Chevrolet Chevy
I inherited a rust bucket that ran great but had lots of small, irritating problems. One of those problems was the 4 wheel drive not engaging the front axle. The actuator is a big vacuum diaphragm that pulls a cable that moves a shift fork that engages the front axle to the transfer case. The problem was that the vacuum actuator was covered in very tiny pinholes. I verified this by applying a vacuum, seeing the diaphragm pull in its guts, then watching it slowly re-inflate and hiss at me with the vacuum hose still attached and no other visible or audible leaks. What I found was that, in a pinch, a couple of layers of liquid electrical tape will seal it up enough to make it work fine for a couple of weeks. The trick is to make sure to clean the rubber well with denatured alcohol and to let those layers dry COMPLETELY before applying vacuum again. Only takes a couple of hours. Helps when you live upstate in the mountains and nobody can get your part for a few days. At least you can get unstuck, drive down to the parts store and yell at the guy IN PERSON.
Posted by superjulim... on
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