The 248731 universal joint is used on many popular floor jacks. Application is for the following 2 ton up to 3 ton capacity floor jacks. * Snap On – YA642 * Snap On YA700 – YA700B * Mac Tools JS642USA * Lincoln- 93642 – 2 ton floor jack * Lincoln- 93652 – 3 ton floor jack * Hein Warner – 93642 * Hein Werner – 93652 * Napa 91-642 * Marquette and more! The 248731 supersedes the following part numbers – 228356, 228349, 227874, 890-022-666 and YA700B3. We also have the measurements of the u-joint in case you’re still unsure if it will work on your particular jack.
The inserts are held in by the bottom being expanded when the install driver is used. This creates a solid repair and is GM’s only authorized thread repair. GM does not recommend stud type repairs in place of the TTY (Torque to Yield) bolts. Ten inserts are used per side so if doing an entire block be sure to order 20. Some GM dealers prefer to order these in bulk at an even greater savings. See our bulk pricing on the Kent Moore J-42385-507 100-Pack.
Question – I broke a 3/16″ drill bit trying to drill out a broke bolt. Should I use your 1/8″ bit? The broken bit is about 1/4″ inside the hole with jagged edges showing, will the rescue bit be able to get the bit out, then the remnants of the bolt? Should I just use an extractor to get the bolt after the rescue bit removes the broken drill bit?
Answer – Usually you go a little smaller than what you’re trying to drill out so you can use a rounding motion, so I’d try the 1/8″. The rounding motion makes the hole a little bigger to reduce binding which could break the Rescue Bit. I’d also start with the reamer end of the Rescue Bit, because it would have less chance of snagging and breaking on the jagged part of the broken drill bit. An extractor could work but as always be careful not to break it! Too much force will break an extractor every-time if the bolt won’t budge. If the extractor idea doesn’t work keep in mind we sell Time Sert thread repair kits that can be used if needed to install a solid inert that allows the use of the same size bolt. Just need to know what size bolt to recommend a kit. In most cases we have over-size kits available, if needed that still uses the original size bolt.
The 1/8″ Rescue Bit can be used in a drill or in a die grinder. We have the 1/8″ Rescue Bit listed with a collet which is the adapter that fits 1/4″ straight and 90 degree air die grinders. It adapts the die grinder so it can use 1/8 accessories, in this case the 1/8″ Rescue Bit. See our Rescue Bits for sale on our main website.
Hope you’ve had a great summer so far. Quick update for you. I took on the project to install sleeves on all the spark plugs on my V-10 F-250. I had originally installed two sleeves (of lesser quality) and found out that the previous owners had also done another one (of lesser quality also). In all, three spark plugs had blown out of this engine before I decided to replace them all. I ordered your Calvan 38900 Ford spark plug thread repair kit and four extra sleeves (inserts) and started working on my truck the last week.