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 Werner – 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 equivalent 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.
The following is an email from a customer: Hello Dennis, Good morning. 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. Â 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.
DennisB DenLorsTools.com © Summary: Kent Moore inserts always available with us. We have the Kent Moore J-42385-507 head bolt inserts in STOCK. They are frequently on backorder with GM but we keep plenty in stock. See the following link 
DennisB DenLorsTools.com © Summary: This is another question regarding how to drill out a tool like a drill bit which has a hard metal compound. While the Rescue Bit can also break in some cases, it has saved a lot of jobs. The success rate is good if recommendations are followed and common sense prevails.
The following is an email from a customer: Hello Dennis, Good morning. 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. Â I ordered your 
DennisB DenLorsTools.com © Summary: Toyota Camry Toyota Rav4 and Highlanders with the 2.4 four cylinder engine has a very common problem with blown head gaskets due to the aluminum threads in the block failing for the head bolts. The middle three in the back of the head are usually the weak point. However, we recommend installing all 10 inserts to strengthen the threads so that it will be less likely to have a repeat problem. Most of the work is getting the head off, so why not spend a little more time to upgrade all the threads? Below are some of our most common questions when it comes to doing this type of repair. Read on for more information or continue to the 
DennisB DenLorsTools.com © Summary: In this quick article we cover a recent question one of our customer’s had about the SATAJet paint spray guns regarding the difference between “RP” and “HVLP”. Image to the left is a SATA Limited edition CHOPPER series! 
DennisB DenLorsTools.com © Summary: Car manufacturers are using much more aluminum in vehicles today reducing over-all weight to increase fuel mileage. One example is Ford and it’s new trucks having an aluminum cab to reduce vehicle weight by hundreds of pounds. We’ve seen it for years in engine components with aluminum heads, blocks and intakes etc. Suspension and steering components are used a lot too. But, now more body panels are aluminum. With aluminum body panels new tooling is needed to handle these repairs. But what if one dent repair station can handle both steel and aluminum? What if the station could also be used for paint on and paint off? If you own or work in a body shop, I think you’re going to like the H&S Autoshot 9850. Read on or go on over to our product listing for current pricing and a video showing all the ways the 
DennisB DenLorsTools.com © Summary: Head bolt thread repair kits for repairing headbolt threads in the cylinder block are covered by a master automotive technician. Advantages of using Time Sert 11125 over the Helicoil 5543-11. Both kits are for M11x1.25 head bolts which are commonly found in Subaru and Nissan (and Infiniti) engines. Which is better? What causes failure of the threads? These questions and more answered below. Also see the video discussing differences in Helicoil VS Time Sert. Click the following current pricing on the