Case Halves Reseal...FWD RTV Sealant Procedure with Current Oil Distribution Plate
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    Case Halves Reseal...FWD RTV Sealant Procedure with Current Oil Distribution Plate

    Subject: Info - FWD RTV Sealant Procedure with Current Oil Distribution Plate #03-06-01-027 - (10/06/2003)

    Models: 1993 Cadillac Allante

    1993-2002 Cadillac Eldorado

    1993-2004 Cadillac DeVille, Seville

    2004 Pontiac Bonneville G/XP




    --------------------------------------------------------------------------------

    This bulletin is being issued to inform dealers of enhancements to crankcase, oil distribution plate and oil pan sealing by using RTV sealant in the procedure below.

    Important: For detailed component and engine removal information, refer to Engine Replacement Procedure in the Engine Mechanical subsection of the appropriate Service Manual or SI.
    1. Drain the engine coolant and engine oil from the engine.
    2. Remove the powertrain from the vehicle.
    3. Remove the drive belt.
    4. Remove the A/C compressor and set it aside.
    5. Remove the power steering pump and set it aside.
    6. Remove the engine from the transmission.
    7. Install the engine on an engine stand.
    8. Remove the components necessary to remove the oil pan and lower crankcase, including but not limited to the following:
      Generator
      Oil filter adapter
      Crankshaft balancer
      Engine front cover
      Engine front cover gasket
      Oil pump
      Lower crankshaft sensor
    9. Rotate the engine stand with the oil pan facing up.

      1.gif
    10. Remove the oil pan bolts.

      2.gif
    11. Remove the oil pan.

      3.gif
    12. Remove the gasket from the oil pan.

      4.gif
    13. Remove the oil suction tube bolt and nut.
    14. Remove the oil suction tube.

      5.gif
    15. Remove the main bearing bolts.
    16. Remove the crankshaft oil scraper plate.

      6.gif
    17. Remove the oil distribution plate bolts.

      7.gif
    18. Remove the oil distribution plate.

      8.gif
    19. Remove the crankcase perimeter bolts on the right side.

      9.gif
    20. Remove the crankcase perimeter bolts on the left side.

      10.gif
    21. Remove the lower crankcase by prying at the designated pry points.




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    Re: Case Halves Reseal...FWD RTV Sealant Procedure with Current Oil Distribution Plat

    22. Remove the lower crankcase.

    11.gif

    23. Remove the upper-to-lower crankcase seals.
    24. Using a suitable scraper, clean the anaerobic sealant from the rail surfaces of the block.
    25. Using a suitable cleaning tool, clean out the anaerobic sealant from the engine block seal groove in the rail of the block.
    26. Using a suitable cleaning solvent, clean the anaerobic sealant from the rail surfaces of the block.
    27. Using a suitable scraper, clean the anaerobic sealant from the rail surfaces of the lower crankcase.
    28. Using a suitable cleaning solvent, clean the anaerobic sealant from the rail surfaces of the lower crankcase.
    29. Ensure the surfaces to be sealed are free of anaerobic sealant and free of any nicks, gouges or scratches. Repair or replace components as necessary.
    30. Inspect all components removed for serviceability. Repair or replace components as necessary.

    12.gif

    31. Place a 5 mm (0.197 in) spot of RTV sealant, P/N 12378521 (in Canada, use P/N 88901148) or equivalent, at the two points where the crankshaft rear oil seal meets the split line of the engine block.

    13.gif

    32. Completely fill and slightly overfill the engine block seal groove with a continuous bead of RTV sealant, P/N 12378521 (in Canada, use P/N 88901148) or the equivalent.
    33. Ensure the RTV sealant, P/N 12378521 (in Canada, use P/N 88901148) or the equivalent, bead is higher than the rail surface by 3 mm (0.118 in).

    14.gif

    34. Using a suitable tool, spread the sealant in the area near the oil drain back passages away from the oil drain back passages and towards the outboard edge of the rail surface.

    15.gif

    35. To prevent shifting of the lower crankcase, install one of the EN 46109 tools into a bolt hole in each rail.

    16.gif

    36. Install the cleaned lower crankcase onto the engine.

    17.gif

    37. Using a rubber mallet, gently tap the lower crankcase into position.
    38. Remove both EN 46109 tools.

    18.gif

    39. Loosely install the crankcase perimeter bolts on the right side.

    19.gif

    40. Loosely install the crankcase perimeter bolts on the left side.

    20.gif

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    Re: Case Halves Reseal...FWD RTV Sealant Procedure with Current Oil Distribution Plat

    21.gif
    41. Using a small long blade screwdriver, clean out any sealant in the oil drain back passages.

    22.gif

    42. Using a NEW oil distribution plate, plate a 3 mm (0.118 in) wide bead (1) of RTV sealant, P/N 12378521 (in Canada, use P/N 88901148) or the equivalent, around the perimeter of the outer seal of the oil distribution plate place.
    43. Ensure the RTV sealant, P/N 12378521 (in Canada, use P/N 88901148) or the equivalent, bead is inboard of all the oil pan bolt holes.

    23.gif

    44. To prevent shifting of the oil distribution plate, install one of the EN 46109 tools into a bolt hole in each side of the lower crankcase.

    24.gif
    45. Install the NEW oil distribution plate.
    46. Remove both of the EN 46109 tools.


    25.gif
    47. Install the oil distribution plate bolts.
    Tighten
    Tighten the oil distribution plate bolts to 10 Nm (89 lb in).


    26.gif


    48. Using a small long blade screwdriver, clean out any sealant in the oil drain back passages.

    27.gif

    49. Install the crankshaft oil scraper plate.
    50. Install the main bearing bolts. Ensure the stud-head bolts used for the oil suction tube support bracket are placed in the proper position.

    28.gif

    51. Tighten the main bearing bolts in the proper sequence.
    51.1. First pass:

    Tighten
    Tighten the main bearing bolts (1 through 20) to 20 Nm (15 lb ft) in proper sequence.

    51.2. Final pass:

    Tighten
    Tighten the main bearing bolts (1 through 20) an additional 65 degrees in proper sequence using the J 45059.


    29.gif


    52. Tighten the crankcase perimeter bolts in the sequence shown.
    Tighten
    Tighten the crankcase perimeter bolts to 30 Nm (22 lb ft).

    30.gif

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    Re: Case Halves Reseal...FWD RTV Sealant Procedure with Current Oil Distribution Plat

    53. Using a small long bladed screwdriver, verify that the oil drain back passages are clear of sealant.

    31.gif

    54. Lubricate the silicone seal in the oil distribution plate. With a twisting motion, install the end of the oil suction tube (2).
    55. Install the oil suction tube retaining bolt (1) and nut (3).
    Tighten

    Tighten the oil suction tube support bracket nut to 24 Nm (18 lb ft).

    Tighten the oil suction tube bolt to 10 Nm (89 lb in).

    56. Using a suitable cleaning solvent, clean the sealing surfaces and seal groove of the oil pan.
    57. Using a suitable cleaning solvent, clean the sealing surfaces of the oil distribution plate.

    32.gif

    58. Completely fill and slightly overfill the oil pan seal groove with a continuous bead of RTV sealant, P/N 12378521 (in Canada, use P/N 88901148) or the equivalent.
    59. Ensure the RTV sealant, P/N 12378521 (in Canada, use P/N 88901148) or the equivalent, bead is higher than the oil pan sealing surface by 3 mm (0.118 in).

    33.gif

    60. To prevent shifting of the oil pan, install one of the EN 46109 tools into a bolt hole in each side of the lower crankcase.

    34.gif

    61. Position the oil pan onto the lower crankcase.
    62. Remove both EN 46109 tools.

    35.gif

    63. Install the oil pan bolts.

    36.gif

    64. Tighten the oil pan bolts in the sequence shown.
    Tighten
    Tighten the oil pan bolts in sequence to 10 Nm (89 lb in).

    65. Clean off any sealant that has protruded to the exterior of the engine.
    Important: For detailed component and engine installation, refer to Engine Replacement Procedure in the Engine Mechanical subsection of the appropriate Service Manual or SI.

    66. Install the components removed.
    67. Remove the engine from the engine stand.
    68. Install the engine to the transmission.
    69. Install a NEW oil filter.
    70. Install the power steering pump.
    71. Install the A/C compressor.
    72. Install the drive belt.
    73. Install the powertrain into the vehicle.
    74. Refill the engine coolant and the engine oil.

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    Re: Case Halves Reseal...FWD RTV Sealant Procedure with Current Oil Distribution Plat

    This was the initial information given to us in 2001. They called it TRI-BOND or TRI-BOND Epoxy


    RTV silicone sealant is used due to its ability to withstand GM Powertrain’s most grueling sealing tests.

    You must use GM #12478521, not a substitute RTV.

    This required sealant comes in a caulk gun applicator with a pre-cut 3 mm metered nozzle.

    The cartridge contains 150 grams of sealant.

    Don’t try to save left over sealant; throw the cartridge away and use a fresh one for each job.

    Plan to work quickly once you’ve opened the applicator; you should have the component in place within 10 minutes .

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    Re: Case Halves Reseal...FWD RTV Sealant Procedure with Current Oil Distribution Plat

    Service Information Update on Consolidating the Use of GM Liquid Gasket/Engine Sealants and the New Sealant Dispenser GE-48326 Essential Tool #05-06-01-010A - (04/16/2007)

    In 2005 General Motors consolidated the use of all liquid gaskets/engine sealants. At that time, two sealants replaced all previous sealants referred to in Service Information (SI) and/or the Service Manual.

    In 2007, GM has consolidated to one engine sealant already available in a 150 g cartridge and now in a 75 g aluminum tube. As a result, P/N 12346141, 54 g tube, has been deleted from service.

    One of these, engine sealant P/N 12378521 (U.S.) and P/N 88901148 (Canada), was released in a cartridge to be used in a conventional caulking gun. The cartridge and conventional caulking gun proved to be too large and cumbersome in certain instances when used in on-vehicle service.

    To address this concern, GM Powertrain Engineering released the engine sealant in a 0.075 kg (75 gram) squeeze tube (packaged six to the carton, with nozzles) along with a new essential service tool, Sealant Dispenser GE-48326, which has been shipped to all GM dealerships.

    Sealant Guidelines
    The GM Powertrain engineering specification for applying this sealant is an even bead, 3 mm (0.118 in) in diameter. Due to the high viscosity of the sealant, a dispenser is required to meet this specification. The GE-48326 Sealant Dispenser provides the ability to apply the sealant to specification using one hand, even in areas not accessible using the P/N 12378521 Engine Sealant cartridge and caulking gun.

    This solitary engine sealant available in tubes and small cartridge is compatible with all synthetic, synthetic blends and mineral oils, as well as all engine coolants including DEX-COOL. The maximum working time of this sealant is 20 minutes. The sealant will be fully cured in 24 hours. The assembly may be filled with oil or coolant immediately after applying the sealant and tightening the bolts.

    Engine Sealant Part Numbers

    88861417 (U.S.) Engine Sealant 0.075 kg (75 gram) Squeeze Tube
    .
    12378521 (U.S.) Engine Sealant 0.15 kg (150 gram) Cartridge

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    Re: Case Halves Reseal...FWD RTV Sealant Procedure with Current Oil Distribution Plat

    Wait until you see the last part of this.

    later

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    Re: Case Halves Reseal...FWD RTV Sealant Procedure with Current Oil Distribution Plat

    Isn't it against GM's policy to post TSB's for the public?
    "They call Alabama the Crimson Tide, call me Deacon Blues."

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    Re: Case Halves Reseal...FWD RTV Sealant Procedure with Current Oil Distribution Plat

    I keep blathering on and on about this...........Alldatadiy.com (subscription) has all the TSB's posted for your vehicle/year/engine VIN code. (and I don't get a kickback: I paid my $39.95/3 years just as everyone else.)

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    Re: Case Halves Reseal...FWD RTV Sealant Procedure with Current Oil Distribution Plat

    Quote Originally Posted by I~LUV~Caddys8792 View Post
    Isn't it against GM's policy to post TSB's for the public?
    NO
    How does alldata get them?
    It is a federal law that they can not be with held.
    They used to come mailed to me at home before they stopped publishing them and went all electronic.

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    Re: Case Halves Reseal...FWD RTV Sealant Procedure with Current Oil Distribution Plat

    Quote Originally Posted by submariner409 View Post
    I keep blathering on and on about this...........Alldatadiy.com (subscription) has all the TSB's posted for your vehicle/year/engine VIN code. (and I don't get a kickback: I paid my $39.95/3 years just as everyone else.)
    They do not list PI's

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    Re: Case Halves Reseal...FWD RTV Sealant Procedure with Current Oil Distribution Plat


    The highlighted hole is the oil drainback for the rear main seal. If it is not cleared out it will blow out the rear main seal

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    Re: Case Halves Reseal...FWD RTV Sealant Procedure with Current Oil Distribution Plat

    Crankshaft Rear Oil Seal Installation
    Tools Required
    • • EN-48072 Sealant Applicator
    • • J 45930-A Crankshaft Rear Oil Seal Installer

    Important: The EN-48072 must be used to ensure even application of the sealant in the bore and to prevent blockage of the drain back hole.

    Important: Ensure components that are being sealed with RTV sealant are assembled within 20 minutes. Components assembled after the RTV sealant has skinned-over, approximately 20 minutes, will not bond properly.

    Important: Although originally equipped with a lip-style crankshaft rear oil seal, engines built from March 1, 1996 and thru 1999 should use the cassette-style crankshaft rear oil seal.




    1. Ensure the engine block where the crankshaft rear oil seal is installed is a deep bore (1).
    • A deep bore of approximately 15 mm (0.5906 in) was used on engines from March 1, 1996 and later.
    • A shallow bore of approximately 8 mm (0.3150 in) was used on engines from 1993 thru February 29, 1996. This block would use a lip-style crankshaft rear oil seal and the J 38817-A for installation.



    2. Inspect the engine block bore (1) and the crankshaft flange (2) for the damage. Repair or replace any damaged components.



    3. Ensure the oil drain-back hole (1) is clear of debris using a wire or an unbound plastic tie wrap (2).



    Important: In order to ensure proper bonding of the sealant the bore must be clean and dry.

    4. Clean the bore in the block with cleaner solvent GM P/N 12378392 or 12346139 (Canadian P/N 88901247).



    Important: Northstar engines 2005 and older have an 8 x 1.25 mm flywheel/flexplate crankshaft bolt hole thread. Northstar engines 2006 and later have an 11 x 1.5 mm flywheel/flexplate crankshaft bolt hole thread.

    5. Remove the proper sized bolts from the J 45930-A . Use the bolts (2) 8 mm or the bolts (3) 11 mm.



    6. Install the EN-48072 pilot base onto the crankshaft. The hub on the crankshaft will fit into the recess on the inboard side of the EN-48072 pilot base.



    Important: Northstar engines 2005 and older have an 8 x 1.25 mm flywheel/flexplate crankshaft bolt hole thread. Northstar engines 2006 and later have an 11 x 1.5 mm flywheel/flexplate crankshaft bolt hole thread.

    7. Use the proper bolts from the J 45930-A to retain the EN-48072 pilot base in place.



    8. Install the EN-48072 applicator housing over the EN-48072 pilot base. Ensure the EN-48072 applicator housing bottoms in the bore of the block



    Important: The sealant must not block the drain back hole. Blockage of the drain back hole can lead to oil leakage.


    9. Apply the sealant GM P/N 12378521 (Canadian P/N 88901148) to the bore outer diameter in the block. Ensure the sealant does not block the drain hole.



    Important: Apply steady even pressure to the EN-48072 applicator housing.

    10. Using a suitable tool spread the sealant within the bore to ensure an even coating across the bore.



    Important: In order to apply an even coat of the sealant do not twist or turn the EN-48072 applicator housing as it is pulled away from the bottom of the bore.


    11. Using both hands, slowly and evenly, pull the EN-48072 applicator housing out of the bore and remove it from the EN-48072 pilot base.



    12. Remove the J 45930-A bolts from the EN-48072 pilot base.



    13. Remove the EN-48072 pilot base.


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    Re: Case Halves Reseal...FWD RTV Sealant Procedure with Current Oil Distribution Plat

    Crankshaft Rear Oil Seal Installation continued


    14. Ensure that the sealant (1) is evenly spread across the bore of the block.



    15. Ensure the drain back hole (1) is clear of the sealant.


    Notice: The cassette seal is installed onto the crankshaft with a press fit that requires over 135 Nm (100 lb ft) of force to remove or install. This high force requires the use of special tools to remove and install the seal. Use of any other tools during removal or installation can lead to damage to the seal or other components. An improperly installed or damaged seal can leak oil and can lead to engine damage. Use of the J 38817-A to install the cassette seal can damage the tool and cause improper seal installation and/or seal damage.

    Important: Beginning with the model year 2006 the flywheel/flexplate crankshaft bolt hole thread was changed from 8 x 1.25 mm to 11 x 1.5 mm. The J 45930-A will service the cassette seals installed on engines from March 1, 1996 to 2006. If a J 45930 is to be used on a 2006 or later engine the update kit, J 45930-10, must be used to convert the J 45930 to a J 45930-A .

    Important: Crankshaft rear oil seal and engine flywheel installation requires adequate space for installation. If the engine stand does not allow suitable space to use the J 45930-A install the crankshaft rear oil seal and engine flywheel with the engine properly supported on the floor or on a bench.




    16. Ensure the proper size of bolt (2) 8 mm or (3) 11 mm is being installed in the J 45930-A .



    17. Turn the center nut (1) of the J 45930-A until the center hub (2) protrudes approximately 15 mm (0.591 in) beyond the outer plate (3).



    Important: DO NOT use any lubricant in order to install the crankshaft rear oil seal. Do not use any lubricant on the coating pre-applied to the inner diameter of the crankshaft rear oil seal. The coating is a sealant that must not be contaminated. Do not use any lubricant on the outer diameter of the crankshaft rear oil seal. The sealant applied to the bore of the engine block will not properly bond to a lubricated crankshaft rear oil seal.

    18. Do not lubricate any part of the new cassette style crankshaft rear oil seal.



    19. Install the new cassette style crankshaft rear oil seal onto the center hub of the J 45930-A .



    20. Thread the two J 45930-A mounting bolts into the crankshaft flywheel bolt holes.



    21. Tighten the two mounting bolts until the J 45930-A is firmly mounted on the crankshaft.



    22. Install the new cassette style crankshaft rear oil seal by turning the nut of the J 45930-A until the drive portion of the J 45930-A bottoms against the crankcase.



    23. Loosen the center nut to release pressure on the crankcase.



    24. Loosen the two mounting bolts.



    25. Remove the J 45930-A from the crankshaft.
    26. Wipe off any excessive sealant from the block.



    27. Ensure the new cassette style crankshaft rear oil seal is installed properly.
    • The outer surface of the seal (3) should be 0.500-0.800 mm (0.0197-0.0315 in) (1) below the surface of the engine block (2).
    • The inner surface of the sleeve (6) should be 0.400-0.900 mm (0.0158-0.0354 in) (4) below the surface of the outer surface of the seal (5).
    • The installed seal and sleeve need to be parallel to the block by 0.000-0.500 mm (0.000-0.0197 in).

    28. Clean all tools to remove any residual sealant.

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    Re: Case Halves Reseal...FWD RTV Sealant Procedure with Current Oil Distribution Plat

    Quote Originally Posted by AJxtcman View Post

    The highlighted hole is the oil drainback for the rear main seal. If it is not cleared out it will blow out the rear main seal







    This can become restricted during a case half reseal. TSB #03-06-01-027

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