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Home >> Chevrolet >> 2006 >> Silverado 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1741 (Automatic Transmission - ALLISON - Repair Instructions - Off Vehicle) >> Repair Instructions - Off Vehicle >> Transmission Fluid Pump Cover Assemble >> Converter Housing/Oil Pump Cover Assembly

Converter Housing/Oil Pump Cover Assembly

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    Fig 1: Aligning Locating Pins In Pump Body With Pin Holes
    GM1207567Courtesy of GENERAL MOTORS CORP.
  1. Position the oil pump assembly (2) on the work table so that the rear of the pump is facing up.
  2. Align the locating pin holes in the torque converter housing to case channel plate (1) with the locating pins (3) in the oil pump assembly (2).
  3. Make sure the bolt holes in the torque converter housing to case channel plate (1) align with the bolt holes in the oil pump assembly (2).
  4. Install the torque converter housing to case channel plate (1) onto the oil pump assembly (2).
    5. Fig 2: Locating Oil Pump Cover Assembly Components
    GM1207584Courtesy of GENERAL MOTORS CORP.
  5. Position the oil pump cover assembly (5) on the work table so that the stator shaft (4) is facing up.
  6. Align, as a unit, the oil pump assembly (1) and the torque converter housing to case channel plate (3) so that the following conditions are met:
    • Oil pump locating pins (2) align with the holes in the oil pump cover assembly (5).
    • The oil pump assembly bolt holes align with the bolt holes of the oil pump cover assembly.
  7. Install, as a unit, the oil pump assembly (1) and the torque converter housing to case channel plate (2) onto the oil pump cover assembly (5).
    8. CAUTION: Refer to Fastener Caution .
  8. Install 5 bolts (6). Tighten the bolts to 27 N.m (20 lb ft).
    9. Fig 3: Identifying Overlap Seal Rings, Stator Shaft, Rear Hub & Thrust Washer
    GM1207713Courtesy of GENERAL MOTORS CORP.
  9. Align the tangs of the thrust washer (5) with the slots at the base of the oil pump cover assembly rear hub.
  10. Install the thrust washer (5) onto the oil pump cover assembly. The thrust washer snaps into place.
  11. Install 3 new overlap seal rings (6) onto the oil pump cover assembly rear hub.
  12. Install a new overlap seal ring (2) onto the middle of the stator shaft (3).
  13. Install a new overlap seal ring (1) onto the front of the stator shaft (3).
    14. Fig 4: Identifying Converter Housing, Oil Pump Cover Module, Channel Plate & Gasket
    GM1914742Courtesy of GENERAL MOTORS CORP.
  14. Position the oil pump cover module (5) on the work table so that the stator shaft is facing up.
  15. Align the bolt holes of the torque converter housing to case channel plate gasket (2) with the bolt holes in the torque converter housing to case channel plate (4).
  16. Apply J 36850:  lubricant or an equivalent lubricant to the gasket face nearest the torque converter housing to case channel plate.
  17. Install the gasket onto the torque converter housing to case channel plate.
  18. Apply J 36850:  lubricant or an equivalent lubricant onto the outside diameter (OD) of the oil pump assembly (3).
    19. Fig 5: View Of Guide Bolts & Oil Pump Cover Module
    GM1914744Courtesy of GENERAL MOTORS CORP.
  19. Install 2 M10 x 1.5 guide bolts (2) into the oil pump cover module (3).
  20. Align the converter housing bolt holes with the bolt holes in the oil pump cover module.
  21. Install the converter housing onto the guide bolts and onto the oil pump cover module.
  22. Remove the guide bolts from the oil pump cover module.
    23. Fig 6: Identifying Bolt Seals
    GM1207880Courtesy of GENERAL MOTORS CORP.
  23. Inspect the bolt seals (2) for nicks or other damage. Replace damaged seals.
  24. Install seals (2) onto 10 bolts (1).
    25. Fig 7: View Of Oil Seal Assembly Retaining Bolts
    GM1207885Courtesy of GENERAL MOTORS CORP.
  25. Install 10 bolts (1) into the converter housing to retain the oil pump cover module. In a criss-cross pattern, tighten the bolts to 56 N.m (42 lb ft).
    26. Fig 8: Installing Pump Body Hub Oil Seal Assembly
    GM1914745Courtesy of GENERAL MOTORS CORP.
  26. Align the oil seal assembly (2) with the oil pump body so that the double edges face the pump body hub.
  27. Using J 43772:  installer, install the oil seal assembly into the pump body hub. The seal installed depth measurement is flush to 0.25 mm (0.010 in) below the oil pump body surface.
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