GM's Northstar TimeSert procedure
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Cadillac Tech Tips - How to fix it Discussion, GM's Northstar TimeSert procedure in Item Specific Cadillac Discussion; Hey guy's this will be a long one and it will take some time. Please don't post untill I am ...
  1. #1
    AJxtcman's Avatar
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    GM's Northstar TimeSert procedure

    Hey guy's this will be a long one and it will take some time.
    Please don't post untill I am done.

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  3. #2
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    Re: GM's Northstar TimeSert procedure

    Cylinder Head Bolt Hole Thread Repair
    Tools Required


    The cylinder head bolt hole thread repair kit J 42385-2030 components consist of the following:

    • Drill (1) J 42385-2031

    • Tap (2) J 42385-2032

    • Installation driver (3) J 42385-2033

    • Stop collar (4) for inboard holes J 42385-2034

    • Alignment pin (5) J 42385-303

    • Bushing (6) J 42385-302

    • Bolts (7) J 42385-2035 and J 42385-2036

    • Fixture plate (8) J 42385-301

    Notice: Ensure the cylinder head bolts, tools and inserts that are being used are the proper pitch or engine damage will occur. The thread pitch on the M11 cylinder head bolts and the engine block cylinder head bolt holes have been revised. In order to install the proper pitch insert it is important to identify which thread pitch is being used. Cylinder head bolts with a pitch of 1.5 mm have a thread length of about 48 mm (1.890 in) long. Cylinder head bolts with a pitch of 2.0 mm have a thread length of about 67 mm (2.638 in) long.

    Important:

    • Cylinder head bolt holes with a pitch of 2.0 mm (0.08 in) use the tooling from the J 42385-2030 . Cylinder head bolt holes with a pitch of 1.5 mm (5.90 in) use the tooling from the J 42385-2000 .

    • Verify the depth of the cylinder head bolt hole and the pitch of the cylinder head bolt threads. Measure the depth from the deck surface of the block to the bottom of the cylinder head hole. All cylinder head holes should use only one of the bushings. Never use both bushings to repair a block.


    With M11 bolts with a 1.5 mm pitch:

    • Use the bushing J 42385-2022 for inboard holes that measure 73 mm (2.874 in) deep and outboard holes that measure 89.5 mm (3.524 in) deep.

    • Use the bushing J 42385-302 for inboard holes that measure 80 mm (3.150 in) deep and outboard holes that measure 96.5 mm (3.799 in) deep.

    With M11 bolts with 2.0 mm pitch:

    Use the bushing J 42385-302 for inboard holes that measure 73 mm (2.874 in) deep and outboard holes that measure 89.5 mm (3.524 in) deep.

    Inboard Bolt Holes
    Caution: Wear safety glasses in order to avoid eye damage.

    Important:

    • Remove the fixture plate prior to installing the insert with the installer tool.

    • The use of a cutting type fluid GM P/N 1052864, (Canadian P/N 992881), WD 40® or equivalent is recommended when performing the drilling, counterboring and tapping procedures.



    When installed to the proper depth, the flange of the insert will be seated against the counterbore of the drilled/tapped hole.



    1. Position the fixture plate (3) with the bushing (1) installed over the cylinder head bolt hole to be repaired (4).
    2. Loosely install the fixture plate bolts (2) into the remaining cylinder head bolt holes.


    3. Position the alignment pin (1) through the bushing and into the cylinder head bolt hole.
    4. With the alignment pin in the desired cylinder head bolt hole, tighten the fixture retaining bolts (2).
    5. Remove the alignment pin (1) from the cylinder head bolt hole.


    6. Install the stop collar (2) onto the drill (1).



      Important:
      • During the drilling process, it is necessary to repeatedly remove the drill and clean chips from the hole and the flutes of the drill.
      • Drill the hole until the stop collar contacts the top of the drill bushing.


    7. Drill out the threads of the damaged hole.



      Important: All chips must be removed from the drilled hole prior to tapping.
    8. Using compressed air, clean out any chips.



      Important:
      • During the tapping process, it is necessary to repeatedly remove the tap and clean chips from the hole and the flutes of the tap.
      • Ensure the tap has created full threads at least to the depth equal to the insert length.


    9. Using a suitable tapping wrench, tap the threads of the drilled hole by hand only.


    10. In order to tap the new threads for the insert to the proper depth, rotate the tap into the cylinder head bolt hole until the first mark (1) on the tap aligns with the top of the drill bushing (3).



      Important: Remove the fixture plate prior to installing the insert with the installer tool.
    11. Remove the fixture plate bolts (2).
    12. Remove the fixture plate (3) and bushing (1).



      Important: All chips must be removed from the tapped hole prior to insert installation.
    13. Using compressed air, clean out any chips.


    14. Spray cleaner GM P/N 12346139, GM P/N 12377981 (Canadian P/N 10953463) or equivalent into the tapped hole.


      Important: All chips must be removed from the tapped hole prior to insert installation.
    15. Using compressed air, clean out any chips.



      Important: Do not allow oil or other foreign material to contact the OD of the insert.
    16. Lubricate the threads of the driver installation tool (2) with the driver oil J 42385-110 (1).

    17. Install the insert (2) onto the driver installation tool (1).


    18. Apply threadlock sealant GM P/N 12345493, (Canadian P/N 10953488), J 42385-109, LOCTITE 277®, or equivalent (1) to the insert OD threads (2).


    19. Install the insert and installation driver (1) into the tapped hole by hand only.
    20. Start the insert into the threaded hole.
    21. Important: If the insert will not thread down until the flange contacts the counterbored surface remove the insert immediately with a screw extracting tool and inspect the tapped hole for any remaining chips and/or improper tapping.
    22. Install the insert until the flange of the insert contacts the counterbored surface.

      Important: The driver installation tool will tighten up before screwing completely through the insert. This is acceptable. The threads at the bottom of the insert are being formed and the insert is mechanically locking the insert into the base material threads.
    23. Continue to rotate the driver installation tool through the insert.
    24. Inspect the insert for proper installation into the tapped hole.

  4. #3
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    Re: GM's Northstar TimeSert procedure

    lots more to come

  5. #4
    AJxtcman's Avatar
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    Re: GM's Northstar TimeSert procedure

    Outboard Bolt Holes
    1. Position the fixture plate (3) with the bushing (2) installed over the cylinder head bolt hole to be repaired (4).
    2. Loosely install the fixture plate bolts (1) into the remaining cylinder head bolt holes.



    3. Position the alignment pin (1) through the bushing and into the cylinder head bolt hole.
    4. With the alignment pin in the desired cylinder head bolt hole, tighten the fixture retaining bolts (2).
    5. Remove the alignment pin (1) from the cylinder head bolt hole.



      Important:

      • During the drilling process, it is necessary to repeatedly remove the drill and clean chips from the hole and the flutes of the drill.

      • Drill the hole until the stop collar contacts the top of the drill bushing.


    6. Drill out the threads of the damaged hole.



      Important: All chips must be removed from the drilled hole prior to tapping.
    7. Using compressed air, clean out any chips.



      Important:

      • During the tapping process, it is necessary to repeatedly remove the tap and clean chips from the hole and the flutes of the tap.

      • Ensure the tap has created full threads at least to the depth equal to the insert length.

    8. Using a suitable tapping wrench, tap the threads of the drilled hole by hand only.


    9. In order to tap the new threads for the insert to the proper depth, rotate the tap into the cylinder head bolt hole until the second mark (1) on the tap aligns with the top of the drill bushing (3).



      Important: Remove the fixture plate prior to installing the insert with the installer tool.
    10. Remove the fixture plate bolts (1).
    11. Remove the fixture plate (3) and bushing.



      Important: All chips must be removed from the tapped hole prior to insert installation.
    12. Using compressed air, clean out any chips.


    13. Spray cleaner GM P/N 12346139, GM P/N 12377981 (Canadian P/N 10953463) or equivalent into the tapped hole.



      Important: All chips must be removed from the tapped hole prior to insert installation.
    14. Using compressed air, clean out any chips.



      Important: Do not allow oil or other foreign material to contact the OD of the insert.
    15. Lubricate the threads of the driver installation tool (2) with the driver oil J 42385-110 (1).


    16. Install the insert (2) onto the driver installation tool (1).


    17. Apply threadlock sealant GM P/N 12345493, (Canadian P/N 10953488), J 42385-109, LOCTITE 277® or equivalent (1) to the insert OD threads (2).


    18. Install the insert and installation driver (1) into the tapped hole by hand only.
    19. Start the insert into the threaded hole.
      Important: If the insert will not thread down until the flange contacts the counterbored surface remove the insert immediately with a screw extracting tool and inspect the tapped hole for any remaining chips and/or improper tapping.
    20. Install the insert until the flange of the insert contacts the counterbored surface.
      Important: The driver installation tool will tighten up before screwing completely through the insert. This is acceptable. The threads at the bottom of the insert are being formed and the insert is mechanically locking the insert into the base material threads.
    21. Continue to rotate the driver installation tool through the insert.
    22. Inspect the insert for proper installation into the tapped hole.

  6. #5
    AJxtcman's Avatar
    AJxtcman is offline Cadillac Owners Connoisseur
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    Thread Starter

    Re: GM's Northstar TimeSert procedure

    I have just a little more

  7. #6
    AJxtcman's Avatar
    AJxtcman is offline Cadillac Owners Connoisseur
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    Thread Starter

    Re: GM's Northstar TimeSert procedure

    Document2.pdf
    Document3.pdf
    Document4.pdf
    Document5.pdf
    Parts list for 00 to 02 or 03 dependinding on the head bolts
    Document1.pdf

    I will post this again at from my home

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