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  • Exploring Some of the Mystery in the MP3023 Transfer Case
    Wednesday, November 13, 2019 1:30 PM
    Introduced in 2011 in the Jeep Grand Cherokee WK2 series and Dodge Durango vehicles and continuing into 2019, there are a lot of these units on the roads. Magna Powertrain designed and produced the 3023 and 3010 transfer cases. The 3010 series is a single speed active transfer case (no low range) called Quadra-Trac Active on Demand, which is standard on the SRT8 models. The 3023 is a two-speed active transfer case electronically controlled by computer that requires no intervention on the driver’s part.
  • Leading Causes of Manual Transmission Failure
    Thursday, November 1, 2018 12:00 AM
    The most common reasons a manual transmission failed are lack of lubrication, incorrect lubrication and improper or no clutch release.
  • Up To Standards: Learn New Things.
    Thursday, January 4, 2018 2:54 PM
    You are not supposed to get to the finish line in pristine condition. You are supposed to cross the line a burnt out, beat up hulk, and through the smoke and leakage, yell, “WHAT A RIDE!”
  • MP3023 T-Case: Simple Mechanics, Complex Electronics
    Friday, December 1, 2017 12:01 AM
    The MP3023 is an active automatic transfer case that is found in a wide variety of vehicles. This unit will be found in GM trucks 2007-13, Jeep Grand Cherokees 2011-19, and in Dodge Durangos 2010-up. We will be discussing the Jeep version here, which has very sophisticated control electronics.
  • Simple Routines Can Leat To Solutions
    Wednesday, November 1, 2017 12:00 AM
    Mike Weinberg recommends using simple routines to pin-point the cause of a problem.
  • Lubricants: Understanding the Mysteries
    Sunday, October 1, 2017 12:00 AM
    Lubricating oils or lubricants have been around since the invention of the wheel, and every class or type of machinery uses and needs them. But, how much do we really understand about these products and about the amazing amount of engineering that is found in a can?
  • Up To Standards: Tires Vastly Improved, but Check the Specs
    Wednesday, September 6, 2017 10:16 AM
    The advancement of technology in the automotive field is rapid and unrelenting. Forces that shape the marketplace, state and federal regulations, the need to attract new customers, and the need to be different and at the same time profitable are driving the car makers to develop technology at a pace never seen before.
  • Are We Speaking the Same Language?
    Monday, August 7, 2017 10:52 AM
    May I have a word with you, please?
    If you are repairing transmissions for a living, you will invariably spend some time on the phone ordering parts and speaking with technical hotlines to assist in your diagnosis of problems. Having been on both ends of a tech line for over half a century and an equal amount of time buying parts, I have learned a whole new language...
  • Electronics In Dual Clutch Units
    Monday, July 10, 2017 9:33 AM
    This article is the final segment of our exploration of the dual-clutch transmission, or direct shift gear box (VW and Audi) or DualTronic in BorgWarner’s brand. We have included several schematics from a VW Touran model, as VW has the largest amount of these transmissions in use.
  • Hydraulic & Fluid Controls in Dual-Clutch Units
    Wednesday, June 7, 2017 3:00 PM
    To recap, we have looked at how the dual-clutch transmission functions, essentially two gear boxes in one with the input shafts driven by hydraulically applied clutch packs that drive three concentric shafts that are one inside the other.
Beyond the missions of providing education and reference materials, Transmission Digest serves as a prime resource used as shops find the parts, supplies and services necessary for successful and profitable operation. Nine of the 12 issues published each year are focused on the products, services and suppliers relating to a specific profit center within the retail shop.

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