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Found 10 results

  1. When we were in kindergarten, it was common to take a watch apart—and not get it back together. Some of us, not content with things that no longer worked, went on to fixing things instead of just taking them apart. Toying with mechanical things versus putting things back together properly is for most a clear fork in the road. In my early childhood, I was fascinated with all things that rolled: trucks, cars, bicycles, motorized cycles, locomotives, take your pick! By age eleven, with the go kart and mini-bike craze in full swing, a neighbor built his sons a gasoline powered, wooden car
  2. Many Jeep owners need how-to information on checking valve clearances and adjusting the hydraulic valve lifters on the inline 232, 258 and 4.0L six-cylinder engines and the 2.5L Jeep pushrod engine. Between the model years 1971 and 2006, Jeep used these AMC-design 232, 258 and 4.0L sixes and the 2.5L straight four-cylinder engine (1983.5-2002). The hydraulic lifter and valvetrain design has particular needs, especially the valve clearances. When these engines develop valvetrain noise, owners often think a valve adjustment will cure the problem. In each of these AMC/Jeep engines, v
  3. There's a lot of chatter about the use of dielectric grease. Permatex suggests that Dielectric Tune-Up Grease is a good barrier to oxidation at plugs, connectors and terminals. There are some online comments at forums that say not to place dielectric grease on connector pins. I've gone to the Permatex site, and the information is vague: "Protects electrical connections and wiring from salt, dirt and corrosion. Extends the life of bulb sockets. Prevents voltage leakage around any electrical connection. Also prevents spark plugs from fusing to boots. Required for modern high energy i
  4. Originally a Q&A Vlog question at the magazine, a Jeep owner has trouble with the gauges and engine tune on his early YJ Wrangler. I suggest several troubleshooting and diagnostics tools for checking circuits, grounds and voltage drops. The use of a volt-ohmmeter, lamp load test and other techniques apply. Wiring integrity and proper splices are also discussed: Trust you'll find this helpful... Moses
  5. The magazine's YouTube Channel generates a lot of questions, and I encourage viewers to join us at these forums. A current exchange involved a viewer installing a 4.0L Jeep water pump and asking about how to seal the gasket and engine-to-block. This is worthwhile for our forum community, here is the discussion: Question from Ben D.: Did you use Gasgacinch between the water pump gasket and block? Looooong time ago I remember using RTV. Was it necessary? My reply: I like Gasgacinch on a cut paper gasket like the water pump. RTV can slough and find its way into the radiator tubes a
  6. Forum Member Alberto from Colombia did a rear axle lube change on his recently purchased 1989 Jeep Wrangler 4x4. He discovered that the Dana 35 rear axle differential case is missing the lock pin retainer for the pinions/spider gear shaft. This is a crucial safety issue and deserves its own topic. Here is a copy of my response to Alberto, we can discuss this further: "Alberto...The "missing" lock pin retainer on the pinions or "spider gears" shaft is very important, as this lock pin holds the pinions/spider gears shaft in place. Warning: If the pinions/spider gear shaft works its w
  7. One of the best lessons learned from years of instructing and our forum discussions is the value of visual learning! Now, the innovative Vimeo On Demand streaming HD video program enables the streaming of 4WD Mechanix 'Tech and Travel' How-to Series HD videos covering a wide range of subjects. Under the 4x4 hood and chassis, on the motorcycle repair stand or from the work bench, I'll deliver step-by-step, close-up HD video details for shop technicians and serious DIY enthusiasts. As you would expect, the growing list of instructional videos will demonstrate best professional practices an
  8. When you find that your engine repair includes cylinder honing, apply this process properly. The optimal honing finish will have the right cross-hatch pattern with correct angles. If you're unsure of the right "look" or angles, look closely at the photo below, the magazine's cylinder barrel after machine honing at L.A. Sleeve Company: Hand honing will involve the correct diameter stone hone or flex hone ("glaze buster"). Your cross-hatch pattern will depend upon the right pressure and speed of the hone as you run it up and down in the cylinder. At our tools forum, you will find m
  9. Hi guys. I have an odd question, and since i keep getting different answers, i figured i would ask here for some clarification. My question actually pertains specifically to the AX15 in the Dakota, but maybe this can be used to start a discussion about other transmissions as well. My question is simple, which is better to use in the Dakotas AX15, regular 80w-90, Pennzoil syncromesh, Lucas heavy duty 80w-90, or 50w engine oil? My truck sees extreme cold and warm weather, limited 4 wheel drive use, mild to once in awhile heavy towing, and frequent short trips and large amounts of highway miles.
  10. We all know the value of anti-freeze/coolant. Anti-freeze is essential for preventing casting cracks when you park the vehicle in freezing weather. By contrast, the coolant properties raise the boiling point of the solution, making our modern engines tolerate higher operating temperatures, which can provide more complete combustion of fuel and cleaner tailpipe emissions. Higher pressure radiator caps also help raise the boiling point. Every liquid cooled engine parked at below freezing temperatures requires anti-freeze. Specifications call for anti-freeze/coolant that is compatible with en
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