Chevrolet Full-size Cars 1968-1978 Repair Guide

Transmission

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REMOVAL & INSTALLATION





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Fig. Fig. 1 Some transmission rear mounts are shimmed



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Fig. Fig. 2 Schematic of the transmission oil cooler lines



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Fig. Fig. 3 Once the transmission is removed, this holding tool can be used to keep the torque converter in place



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Fig. Fig. 4 Flywheel-to-torque converter attachment-net hole design shown, others are similar

  1. Open the hood and place protectors on the fenders. Remove the air cleaner assembly and cover the air intake.
  2.  
  3. Disconnect the negative battery cable. Disconnect the detent cable at its upper end.
  4.  
  5. Remove the transmission oil dipstick, and the bolt holding the dipstick tube if it is accessible.
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  7. Raise and support the vehicle safely.
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If a floor pan reinforcement is used, remove it if it interferes with driveshaft removal and installation.

  1. Disconnect the speedometer cable at the transmission.
  2.  
  3. Disconnect the shift linkage at the transmission. Remove the driveshaft from the transmission.
  4.  
  5. Disconnect all electrical leads at the transmission and any clips that hold these leads to the transmission case.
  6.  
  7. Remove the flywheel cover and matchmark the flywheel and torque converter for later assembly.
  8.  
  9. Remove the torque converter-to-flywheel bolts and/or nuts.
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  11. On gasoline engine vehicles, disconnect the catalytic converter support bracket.
  12.  
  13. Remove transmission support-to-transmission mount bolt and transmission support-to-frame bolts, and any insulators (if used).
  14.  
  15. Position the transmission jack under the transmission and raise it slightly.
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  17. Slide the transmission support rearward.
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  19. Loosen the transmission enough to gain access to the oil cooler lines and detent cable attachments.
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  21. Disconnect the oil cooler lines and detent cable. Plug all openings.
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  23. Support the engine and remove the engine-to-transmission bolts.
  24.  
  25. Disconnect the transmission assembly, being careful not to damage any cables, lines or linkage.
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  27. Install a C-clamp or torque converter holding tool onto the transmission housing to hold the converter to the housing. Remove the transmission assembly from the vehicle, using a transmission jack.
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  29. Using the transmission jack carefully move the transmission into position. Replace or connect all components removed above. When installing the flex pate-to-converter bolts, make sure that the weld nuts on the converter are flush with the flex plate and that the converter rotates freely by hand. Hand start the three bolts and tighten them finger-tight, then torque them evenly.
  30.  
  31. Install a new oil seal on the oil filler tube before installing the tube. Torque the flywheel-to-converter bolts to 35 ft. lbs. Torque the transmission-to-engine bolts to 35 to 40 ft. lbs. Adjust the shift linkage and detent cable following the procedures in this information, and check the transmission fluid if the transmission was not drained previously.
  32.  

 
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