• | J 42385-400 Thread Repair Kit |
• | J 43965 Extension Kit |
The thread repair process involves a solid, thin walled, self-locking, carbon steel, bushing type insert. During the insert installation process, the installation driver tool cold-rolls the bottom internal threads and expands the bottom external threads of the insert into the base material. This action mechanically locks the insert into place.
The tool kit J 42385-400 is designed for use with either a suitable tap wrench or drill motor. Limited access and larger hole repair may process better using a tap wrench. An extension J 43965 may also be necessary to drive the thread repair tooling dependent on access to the hole being repaired.
It is critical that the drilling, counterboring and tapping of the hole to be repaired follows the same centerline as the original hole.
During the drilling and tapping of the hole being repaired ensure the tooling is consistently machining perpendicular to the surface of the base material.
If the threaded hole being repaired has a base surface perpendicular to the hole centerline, tapping guides are available to aid in tapping the hole.
Tap Size | Tap Guide | Tap Size | Tap Guide | Tap Size | Tap Guide |
---|---|---|---|---|---|
-- | J 42385- | -- | J 42385- | -- | J 42385- |
6 x 1.0 | 729 | 10 x 1.5 | 731 | 14 x 1.5 | 736 |
8 x 1.25 | 730 | 12 x 1.5 | 732 | 20 x 1.5 | 737 |
Caution: Wear safety glasses in order to avoid eye damage.
Important: 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 (1) of the insert will be seated against the counterbore of the drilled/tapped hole and just below the surface (2) of the base material.
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. • Do NOT drill any further than the original hole depth.
• | M6 inserts require a minimum drill depth of 15 mm (0.59 in). |
• | M8 inserts require a minimum drill depth of 20 mm (0.79 in). |
• | M10 inserts require a minimum drill depth of 23.5 mm (0.93 in). |
Important: All chips must be removed from the drilled hole prior to tapping.
Important: A properly counterbored hole will show a slight burnishing on the surface of the base material for 360 degrees around the drilled hole.
Important: All chips must be removed from the drilled hole prior to tapping.
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.
• | M6 inserts require a minimum tap depth of 15 mm (0.59 in). |
• | M8 inserts require a minimum tap depth of 20 mm (0.79 in). |
• | M10 inserts require a minimum tap depth of 23.5 mm (0.93 in). |
Important: All chips must be removed from the tapped hole prior to insert installation.
Important: All chips must be removed from the tapped hole prior to insert installation.
Important: Do not allow oil or other foreign material to contact the outside diameter (OD) of the insert.
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.
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.
Caution: Wear safety glasses in order to avoid eye damage.
Important:
• 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. • Do NOT remove the original stop collar from a counterbore drill.
When installed to the proper depth, the flange of the insert (1) will be seated against the counterbore (2) of the drilled/tapped 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 surface of the base material.
Important: All chips must be removed from the drilled hole prior to tapping.
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.
Important: All chips must be removed from the tapped hole prior to insert installation.
Important: All chips must be removed from the tapped hole prior to insert installation.
Important: Do not allow oil or other foreign material to contact the outside diameter (OD) of the insert.
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.
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.
The thread repair insert for tapered pipe threads is coated with a clear silver zinc coating.
Caution: Wear safety glasses in order to avoid eye damage.
Important: 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 (1) of the insert will be seated against surface (2) of the base material of the drilled/tapped 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 surface of the base material.
Important: All chips must be removed from the drilled hole prior to tapping.
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.
Important: All chips must be removed from the tapped hole prior to insert installation.
Important: All chips must be removed from the tapped hole prior to insert installation.
Important: Do not allow oil or other foreign material to contact the outside diameter (OD) of the insert.
Important: If the insert will not thread down until the flange contacts the surface of the base material remove the insert immediately with a screw extracting tool and inspect the tapped hole for any remaining chips and/or improper tapping.
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.
The cylinder head bolt hole required tools consist of the following:
• | Drill (1) J 42385-402 |
• | Tap (2) J 42385-403 |
• | Installation driver (3) J 42385-404 |
• | Alignment pin (4) J 42385-303 |
• | Bushing (5) J 42385-302 |
• | Bolts (6) J 42385-421 |
• | Fixture plate (7) J 42385-401 |
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.
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.
Important: All chips must be removed from the drilled hole prior to tapping.
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.
Important: Remove the fixture plate prior to installing the insert with the installer tool.
Important: All chips must be removed from the tapped hole prior to insert installation.
Important: All chips must be removed from the tapped hole prior to insert installation.
Important: Do not allow oil or other foreign material to contact the outside diameter (OD) of the insert.
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.
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.
Important:
• In order to repair some crankshaft main bolt holes it will be necessary to mount the fixture plate upside down. • Do NOT remove the fixture plate prior to installing the insert with the installation driver. The fixture plate remains in position throughout the thread repair process.
The crankshaft main bearing bolt hole required tools consist of the following:
• | Drill (1) J 42385-417 |
• | Tap (2) J 42385-418 |
• | Installation driver (3) J 42385-419 |
• | Fixture plate (4) J 42385-401 |
• | Bushing (5) J 42385-307 |
• | Alignment pin (6) J 42385-308 |
• | Bolts (7) J 42385-510 |
Caution: Wear safety glasses in order to avoid eye damage.
Important:
• Ensure the fixture plate is installed during the machining and installation processes of the insert. • 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.
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 crankshaft main bolt hole until the mark (1) on the drill aligns with the top of the drill bushing (2).
Important: All chips must be removed from the drilled hole prior to tapping.
Important:
• Do not remove the fixture plate, ensure the fixture plate is installed during the machining and installation processes of the insert. • 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.
Important: All chips must be removed from the tapped hole prior to insert installation.
Important: All chips must be removed from the tapped hole prior to insert installation.
Important:
• Do not remove the fixture plate, ensure the fixture plate is installed during the installation process of the insert. • Do not allow oil or other foreign material to contact the outside diameter (OD) of the insert.
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.
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.