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Transmission & Transfer Case

Everything pertaining to transmissions and transfer cases. This includes automatic transmissions and manual transmissions.

10 Cummins articles in this category

  1. pepsi71ocean ·
    Hey Guys, Pepsi here with another article.  This one I feel is pertinent for diagnosing transmission issues. I've compiled this from a few of my articles and some more threads. I also got help from my one friend Mitch who was nice enough to copy a ATSG manual for me.     ALWAYS THE FIRST STEP…. CHECK YOUR DAM FLUID! Ha, yes you guessed it most times low/high fluid levels will cause tons of issues, its best to check your fluid
    pepsi71ocean
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    • 30,001 views
  2. IBMobile ·
    Adding a Transmission Drain Plug When you have the pan off you may want to install a drain plug in it. Parts needed:   1 M12 x 1.25 x 30mm drain plug 1 M12 x 1.25 nut 1 12mm ID plastic washer Paint (your choice type and color) Tools needed: Hammer Center punch Drill motor ½” drill bit Torque wrench 0-75 FT-LB or 0-300 IN-LB  Socket to fit drain plug   An automotive supply store like
    IBMobile
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    • 2,608 views
  3. IBMobile ·
    Torque Converter Lockup Switch with Brake Pedal Release System   What it will do   This system can keep the torque converter locked in 3ed or 4th gear.  With a modification to the valve body 2ed gear can be locked up.  When driving normal freeway speed the torque converter can be locked up with the momentary switch and stays locked up.  The transmission stays in direct drive even when the accelerator pedal is released, there is no freewheeling, RPM level is maintained and tor
    IBMobile
    • 0 comments
    • 11,907 views
  4. Me78569 ·
    I decided to go through the trouble of installing a Momentary switch in the gear select arm.  A Momentary switch means that it will only connect the circuit if the button is pressed.  As soon as you release the button the circuit closes.  IE: Pressing it will complete the Ground and trigger the Torque Converter to Lockup, as soon as you release the button the Torque converter lockup will release.  This fixed the issue of forgetting that the switch was on when coming to a stop.  I found th
    Me78569
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    • 6,003 views
  5. CUMMINSDIESELPWR ·
    So this thread is an illustration of me actually doing the work. What is not in the commentary in the photos is the axle center bearing has to be pressed off with a 12ton press. The new bearing and the bearing replacement was done at Englewood Driveshafts Inc (Denver). Bill was the one who replaced the bearing after i removed the driveshafts and brought the front portion to him. The new bearing,rubber damper,bearing removel and replacement was less than $100. He was very nice to tell me h
    CUMMINSDIESELPWR
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    • 8,655 views
  6. Mopar1973Man ·
    I was warned on a few forum sites that I shouldn't do the NAPA replacement master and slave cylinders for the clutch system. I was also told that they are nearly impossible to bleed out the air in the system. Well... I figured out a way of doing it and it was very easy to do! Now there is no more need for expensive dealer units or high performance units. You can purchase the parts at your local NAPA auto parts store for about $150 buck and replace both units. Firs
    Mopar1973Man
    • 2 comments
    • 8,548 views
  7. Me78569 ·
    Here is the NP241DHD transfer case.  The R&R for the LD transfer case should be very similar. Here is the Parts Blow-out for the NP241DHD You can find any of the part numbers for the transfer case using the part number lookup tool.  The link below will take you to the transfer case section for a 2nd gen Dodge Ram Truck.   https://mopar1973man.com/external-media/pdf/2000Ra
    Me78569
    • 1 comment
    • 52,183 views
  8. Mopar1973Man ·
    PCM Operation Two different control modules are used: The Powertrain Control Module (PCM), and the Engine Control Module (ECM). The ECM controls the fuel system. The PCM does not control the fuel system. The PCM’s main function is to control: the vehicle charging system, speed control system, transmission, air conditioning system and certain bussed messages. The PCM can adapt its programming to meet changing operating conditions. The PCM r
    Mopar1973Man
    • 0 comments
    • 7,583 views
  9. Mopar1973Man ·
    Torque Converter Issues and Alternator Noise Testing Before Testing - IMPORTANT PLEASE DO NOT SKIP! Before doing any testing of the alternator for AC noise, make sure to remove any and all wiring modifications. Return the electrical system back to stock. Make sure there is no extra grounds, relocation of ground wires or noise filters installed before testing the alternator. It has been brought to my attention that wiring mods can and will provide false passing grades for the alternator
    Mopar1973Man
    • 0 comments
    • 40,055 views
  10. Me78569 ·
    Well I have finally came up with a solution for the dreaded torque management that has plagued us 2nd gen owners for decades, and best of all its free. It all happened by accident actually. I opened up my trans due to some funny shifting issues and found every screen inside it was full of metal shavings. Which obviously meant that they got past the filter but more on this later. I cleaned all the solenoids and sensors of the metal and the little screens that protected them along with installing
    Me78569
    • 2 comments
    • 9,842 views