LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2018 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 55 (Manual Transmission - Y4A/Y4M (MR7)) >> Repair Instructions - Off Vehicle >> Transmission Disassemble

Transmission Disassemble

WARNING: This page is about a different car, the 2017 Chevrolet Spark. However, it is still accessible from the selected car via links, so may be relevant.

Special Tools

For equivalent regional tools, refer to Special Tools .

  1. Remove the manual transmission. Refer to Transmission Replacement (With 1.0L Engine) Transmission Replacement (With 1.4L Engine) .
  2. Remove the selector and shift lever cable bracket bolts (1).
    Fig 1: Selector And Shift Lever Cable Bracket And Bolts
    GM3970223Courtesy of GENERAL MOTORS COMPANY
  3. Remove the selector and shift lever cable bracket (2).
  4. Remove the backup light switch (2) using the DT-50182  backup lamp switch remover/installer (1).
    Fig 2: Backup Light Switch And Special Tool
    GM3970224Courtesy of GENERAL MOTORS COMPANY
  5. If equipped, remove the vehicle speed sensor assembly bolt (1).
    Fig 3: Vehicle Speed Sensor Assembly And Bolt
    GM3970225Courtesy of GENERAL MOTORS COMPANY
  6. If equipped, remove the vehicle speed sensor assembly (2).
  7. If equipped, remove the input speed sensor bolt (1).
    Fig 4: Input Speed Sensor And Bolt
    GM4646448Courtesy of GENERAL MOTORS COMPANY
  8. If equipped, remove the input speed sensor (2).
  9. Remove the clutch actuator cylinder pipe elbow clip (1).
    Fig 5: Clutch Actuator Cylinder Pipe Elbow And Clip
    GM3970226Courtesy of GENERAL MOTORS COMPANY
  10. Remove the clutch actuator cylinder pipe elbow (2).
  11. Remove the clutch actuator cylinder clip (1).
    Fig 6: Clutch Actuator Cylinder Components
    GM3970227Courtesy of GENERAL MOTORS COMPANY
  12. Remove the clutch actuator cylinder pipe (2) and sleeve (3) from transmission right side case.
  13. Remove the clutch actuator cylinder pipe sleeve (3) from the clutch actuator cylinder pipe.
    NOTE: Push the key (4) of the clutch actuator cylinder pipe sleeve using a screw driver.
  14. Remove the 3 clutch actuator cylinder bolts (1).
    Fig 7: Clutch Actuator Cylinder And Bolts
    GM3970229Courtesy of GENERAL MOTORS COMPANY
  15. Remove the clutch actuator cylinder (2).
  16. Remove 8 side cover bolts (1).
    Fig 8: Side Cover Bolts
    GM2308498Courtesy of GENERAL MOTORS COMPANY
  17. Remove side cover (2) using a rubber hammer.
  18. Remove the sealant on the side cover and the transmission case.
  19. Remove the input shaft circlip (1).
    Fig 9: Input Shaft Circlip
    GM2754425Courtesy of GENERAL MOTORS COMPANY
  20. Remove the 5th gear shift fork pin (1) using a pin punch and a hammer.
    Fig 10: 5th Gear Shift Fork Pin
    GM3970231Courtesy of GENERAL MOTORS COMPANY
  21. Pull and remove the 5th gear fork (1) and the synchronizer sleeve (2) together.
    Fig 11: 5th Gear Fork And Synchronizer Sleeve
    GM3970233Courtesy of GENERAL MOTORS COMPANY
  22. Remove the 5th gear synchronizer hub plate (4) from the 5th synchronizer hub.
    Fig 12: 5th Gear Synchronizer Hub Components
    GM3970234Courtesy of GENERAL MOTORS COMPANY
  23. Remove the 5th synchronizer hub (3), 2 levers (2) and the synchronizer ring (1).
  24. Pull and remove the input shaft 5th gear (1).
    Fig 13: Input Shaft 5th Gear And Bearing
    GM2308508Courtesy of GENERAL MOTORS COMPANY
  25. Remove the input shaft 5th gear bearing (2).
  26. Hold the input shaft using the DT-49084  input shaft holder (1).
    Fig 14: View Of DT-49084 Input Shaft Holder
    GM2308510Courtesy of GENERAL MOTORS COMPANY
  27. Remove the caulking and the counter shaft 5th gear nut (2).
  28. Remove the counter shaft 5th gear (1) from the counter shaft.
    Fig 15: Counter Shaft 5th Gear
    GM3970235Courtesy of GENERAL MOTORS COMPANY
  29. Remove 6 left case plate screws (1).
    Fig 16: Left Case Plate, Shim And Screws
    GM2308511Courtesy of GENERAL MOTORS COMPANY
  30. Remove the left case plate (2).
  31. Remove the countershaft bearing shim (3).
  32. Remove the reverse idle gear shaft bolt (1) and gasket (2).
    Fig 17: Reverse Idle Gear Shaft Bolt And Gasket
    GM3970236Courtesy of GENERAL MOTORS COMPANY
    NOTE: The case (Left) cannot be removed without removing the reverse idle gear shaft bolt.
  33. Remove the shift interlock washer (2) and bolt (1).
    Fig 18: Shift Interlock Washer And Bolt
    GM3970238Courtesy of GENERAL MOTORS COMPANY
    NOTE: Certainly remove the shift interlock bolt. Otherwise, shift control housing assembly cannot be removed.
  34. Remove the 4 shift control housing bolts (1).
    Fig 19: Shift Control Housing Assembly And Bolts
    GM3970239Courtesy of GENERAL MOTORS COMPANY
    NOTE: Shift the transmission into NEUTRAL.
  35. Remove the shift control housing assembly (2).
  36. Remove the sealant on the shift control housing and the transmission case.
  37. Remove the 2 bolts (1) from the right case side.
    Fig 20: Right Case Side Bolts
    GM2308565Courtesy of GENERAL MOTORS COMPANY
  38. Remove 13 bolts (1) from the left case side.
    Fig 21: Left Case Side Bolts
    GM3970240Courtesy of GENERAL MOTORS COMPANY
  39. Remove the shift shaft detent (3) using the DT-727  remover (1) and GE-328 - B  Puller (2).
    Fig 22: Shift Shaft Detent And Special Tools
    GM4595494Courtesy of GENERAL MOTORS COMPANY
    NOTE: Inspect the detent for damage. If the detent is damaged, remove and discard the detent.
  40. Remove the left side case by hitting with a rubber hammer lightly.
    Fig 23: Left Side Case
    GM3970243Courtesy of GENERAL MOTORS COMPANY
  41. Remove the sealant on the case.
  42. Remove the reverse gear shift lever washer (2) and bolts (1).
    Fig 24: Reverse Gear Shift Lever, Washer And Bolts
    GM3970244Courtesy of GENERAL MOTORS COMPANY
  43. Remove the reverse gear shift lever (3).
  44. Remove the reverse idle gear (2) and shaft (1).
    Fig 25: Reverse Idle Gear And Shaft
    GM3970245Courtesy of GENERAL MOTORS COMPANY
  45. Remove the reverse idle gear (2) from the shaft assembly.
  46. Remove the 5th and reverse gear shift shaft (1).
    Fig 26: 5th And Reverse Gear Shift Shaft
    GM3970246Courtesy of GENERAL MOTORS COMPANY
  47. Remove the gear unit and the shift shaft assembly (1) together.
    Fig 27: Gear Unit And Shift Shaft Assembly
    GM3970962Courtesy of GENERAL MOTORS COMPANY
    NOTE: Be careful not to damage the teeth of the counter shaft pinion and the differential ring gear.
  48. Remove the high and the low speed shift shaft assembly from the gear unit.
  49. Insert a wooden prying device into the lower side of the differential.
    Fig 28: Differential Assembly
    GM3970963Courtesy of GENERAL MOTORS COMPANY
  50. Remove the differential assembly (1) by moving it right and left.
  51. Remove the oil gutter (1).
    Fig 29: Oil Gutter
    GM3970964Courtesy of GENERAL MOTORS COMPANY
    NOTE: Push the key of the oil gutter from the left side case using a screw driver.
  52. Remove the counter shaft bearing cup (2) using the DT-50504  counter shaft bearing cup remover/installer (1) and a hammer.
    Fig 30: Counter Shaft Bearing Cup And Special Tool
    GM2493559Courtesy of GENERAL MOTORS COMPANY
  53. Remove the differential left side bearing cup (3) using the DT-50500  differential bearing cup remover (1) and the DT-50505  bridge (2).
    Fig 31: Differential Left Side Bearing Cup, Left Side Bearing Shim And Special Tools
    GM2493560Courtesy of GENERAL MOTORS COMPANY
  54. Remove the differential left side bearing shim (4).
  55. Remove the differential right side oil seal (1) using the DT-7004  sliding hammer and the DT-586  seal remover hook (2).
    Fig 32: Differential Right Side Oil Seal And Special Tools
    GM3970966Courtesy of GENERAL MOTORS COMPANY
    NOTE: Do not reuse the differential right side oil seal.
  56. Remove the input shaft right side seal (1) using a screwdriver.
    Fig 33: Input Shaft Right Side Seal
    GM3970967Courtesy of GENERAL MOTORS COMPANY
    NOTE: Do not reuse the input shaft right side seal.
  57. Remove the differential right side bearing cup (3) using the DT-50500  differential bearing cup remover (1) and the DT-50505  bridge (2).
    Fig 34: Differential Right Side Bearing Cup And Special Tools
    GM2493563Courtesy of GENERAL MOTORS COMPANY
  58. Remove the differential left side oil seal (1) using the DT-586  seal remover hook (2) and DT-7004  sliding hammer (3).
    Fig 35: Differential Left Side Oil Seal And Special Tools
    GM3970968Courtesy of GENERAL MOTORS COMPANY
    NOTE: Do not reuse the differential left side oil seal.