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Installation Guide

YANK Converter Installation Guide
Please check the following...
  1. Crank pilot hole for trash or wear.
  2. Check the flexplate for cracks and chipped teeth on the ring gear. Take the new torque converter and hold it against the flexplate to see if the application is correct by checking that the pilot size and bolt circle are correct.
  3. Mounting points for rust and flatness.
  4. Converter bolts for correct length and threads.
  5. Converter fits correctly on pump.
  6. Add one qt. Oil prior to installation of converter. We recommend a good name brand ATF in either a Dextron III or a Type F (We do not recommend any type of Synthetic fluid at all.) DEXTRON 6 IS OK. Use high temperature grease on crank pilot. (a light coat will do.) - After transmission is bolted up check that converter will pull away from the flywheel at least 3/32" but no more than 3/16". - Use spacers as needed, if needed. - Check that pump is fully engaged. - Please use a high capacity transmission cooler.
Chrysler 727 = 1.250" from bell housing to Ring Gear.
GM TH350, Powerglide = 1.125" from bell housing to converter pads. GM TH 400 = 1.187" from bell housing to converter pads.
GM 700 R4, 4L60E, 200-4R = 1.125" from bell housing to converter pads.
GM 4L80E = 1.030" from bell housing to converter pads.
FORD C6/C4 = 1.125" from bell housing to converter pads.
AODE = 1.030" from bell housing to converter pads.
AOD = 1.000" from bell housing to converter pads. Distance may vary +/- .050"

Break in period...

Yank converters have a special clutch lining material that requires a special break in procedure. This procedure consists of: Driving the converter at normal speed with NO WOT starts or brake stalling the converter for approximately 150 miles. Stall checking or Brake stalling will severely damage the clutch lining if converter is not broken in properly. THIS WILL VOID ANY WARRANTY.
If you have any questions please don't hesitate to give us a call at (775) 826-9955. Or you can e-mail us at yankconverters@gmail.com

6L80E Transmission Fluid Checking Procedure:

This procedure checks both the transmission fluid level, as well as the condition of the glut itself. Since the transmission on this vehicle is not equipped with a fill tube and dipstick, a tube in the bottom pan is used to set the fluid level.

Notice: This transmission fluid level must be checked when the transmission fluid temperature (TFT) is between 30 - 50°C (86 - 122°F). If the TFT is not within the range, operate the vehicle or allow the fluid to cool as required. Setting the lid level with a TFT outside this range will result in either an under or over-filled transmission. TFT>50°C=under-filled, TFT<30°C=over-filled. An under-filled transmission will cause premature component wear or damage. An over-filled transmission will cause fluid to discharge out the vent tube, fluid foaming, or pump cavitation.

  1. Observe the TFT using the driver information center (DIC) or a scan tool.
  2. Start and idle the engine.
  3. Depress the brake pedal and move the shift lever through each gear range. Pause for at least 3 seconds in each range. Move the shift lever back to PARK. Ensure the engine RPM is low (500-800 RPM).
  4. Allow the engine to idle for at least 1 minute.
  5. Raise the vehicle on a hoist. The vehicle must be level, with the engine running and the shift lever in the PARK range.
  6. Notice: THE ENGINE MUST BE RUNNING when the transmission fluid level control plug is removed or excessive fluid loss will occur, resulting in an under-filled condition. An under-filled transmission will cause premature component wear or damage. Important: Continue to monitor the TFT. If the TFT is not within the specified values, reinstall the fluid level control plug and repeat the previous steps. Remove the fluid level control plug/drain plug from the transmission fluid pan. Allow any fluid to drain. - If the fluid is flowing as a steady stream, wait until the fluid begins to drip.
  7. If no fluid comes out, add fluid until fluid drips out. Refer to Transmission Fluid Fill Procedure.
  8. Inspect the fluid color. The fluid should be red or dark brown. - If the fluid color is very dark or black and has a burnt odor, inspect the fluid and inside of the bottom pan for excessive metal particles or other debris. A small amount of "friction" material in the bottom pan is a normal condition. If large pieces and/or metal particles are noted in the fluid or bottom pan, flush the oil cooler and cooler lines and overhaul the transmission. If there are no signs of transmission internal damage noted, replace the fluid filter assembly, repair the oil cooler, and flush the cooler lines. - Fluid that is cloudy or milky or appears to be contaminated with water indicates engine coolant or water contamination. Refer to Engine Coolant/Water in Transmission.
  9. Replace the fluid level control plug/drain plug and tighten to 25 Nm (18 ft lbs.).
  10. Inspect for external leaks. Refer to Fluid Leak Diagnosis.

If you have any questions please don't hesitate to give us a call at (775) 826-9955. Or you can e-mail us at yankconverters@gmail.com
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