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removing wrist pins

Old 08-19-2014, 04:23 PM
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Default removing wrist pins

do you have to press them out , on a quadra engine?
Old 08-19-2014, 04:33 PM
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If they aren't floating pins then yes you do have to press them out, a small vice is all you need, I've done them carefully with a channel lock plyer, not a quadra but other engines.
Old 08-19-2014, 06:17 PM
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Mine are retained by a clip ring. I don't know about a Quadra. Dan.
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Old 08-19-2014, 08:44 PM
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Most pins are full floating and retained by wire clips. Varnish and other residue can collect on the pin and make it very difficult to remove. Of course, the clips have to be removed first and yes I have seen guys try to remove the pin with the clips in place! The varnish or other residue can be softened by using a bit of heat from a torch focused on the pin bosses in the piston and the top of the rod. You don't want to get things too hot, just hot enough to soften the goo so the pin will come out. In extreme cases, there may be rust or other corrosion present and a bit of penetrating oil may help with that. Regardless, keep moving the pin as much as you can and it will finally come out. In some cases I've had to drive it out with a wood dowel and hammer while supporting the piston on a wood block.
Old 08-20-2014, 06:08 AM
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Yeah, +1 on everything TruckRacer said, plus be really careful to properly support the rod while your working on it as it is easy to damage the piston or bend the rod while removing stubborn ones.

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Old 08-20-2014, 06:14 AM
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To warm up the piston helps get them out too.
Old 08-22-2014, 11:23 AM
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Some engines used the wire clips or E clips to help lock the wrist pins in place and you still needed to use a piston pin tool to remove or press them back in with. The tool basically looks sort of like a large C clamp. But the way you use it keeps pressure off the piston itself so you don't distort the piston.
But as mentioned a large vice works as does a Arbor press or a press for that matter. The key trick is to avoid putting pressure on the piston as much as possible.
Old 08-24-2014, 01:39 PM
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what i finnaly used was a copper drift rod , wood blocks and a c clamp , it worked good, but took
some time and patience.

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