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NHTSA ID Number: 10017818
Manufacturer Communication Number: 050601026
Summary
INFORMATION ON USE OF BOLT EXTRACTOR TOOL KIT PART NUMBER EN-47702 FOR REMOVING BROKEN CYLINDER HEAD OR MAIN BEARING CAP BOLTS ON INLINE TRUCK ENGINES. *TT
25 Affected Products
Vehicles
| MAKE | MODEL | YEAR |
BUICK | RAINIER | 2004-2006 |
| CHEVROLET | COLORADO | 2004-2006 |
| CHEVROLET | TRAILBLAZER | 2002-2006 |
| GMC | CANYON | 2004-2006 |
| GMC | ENVOY | 2002-2006 |
| HUMMER | H3 | 2006 |
| OLDSMOBILE | BRAVADA | 2002-2004 |
| SAAB | 9-7X | 2005-2006 |
A Torque To Yield (TTY) bolt, like a cylinder head bolt or main bearing cap bolt, may break during repair procedures.
Interaction between a TTY bolt and threads may cause the bolt to bind or break on removal.
Prior to removing the cylinder head or main cap bolts, perform the following procedure:
Using an appropriately sized punch and hammer, rap on the head of each bolt.
The vibration produced by this procedure will assist in successful removal.
If a head bolt or main bolt breaks during engine disassembly, a broken bolt extractor kit (EN-47702) has been released to assist in removal of the remaining bolt segment.
Many times the remaining bolt segment will back out easily with a pick tool or a reverse twist drill bit.
NHTSA ID Number: 10017818
Manufacturer Communication Number: 050601026
| “This site contains affiliate links for which OEMDTC may be compensated” |
Bestseller No. 1
REXBETI Impact Bolt & Nut Remover Set, 13+1 Pieces Bolt Extractor Tool Set with Solid Storage Case
- Made of high hardness chrome molybdenum steel for durability
- All the bolt extractors are precision engineered to easily extract damaged bolts, nuts and screws even if they are stripped, rusted or frozen
- Tight grips and won’t let go, the internal thread design provides excellent torque, the more you turn, the tighter the socket grips
- 13 pieces 3/8 inch drive bolt & nut remover comes with 3/4"(19mm), 11/16", 17mm, 5/8"(16mm), 9/16"(14mm), 13mm, 1/2", 12mm, 7/16"(11mm), 10mm, 3/8", 5/16"(8mm), 1/4"，1 piece hex shank socket adapter
- Heavy duty blow molded case lets all the bolt remover stay organized
Bestseller No. 2
CRAFTSMAN CMMT14108 Spiral Screw Extractor
- EFFICIENT: Designed to remove broken studs, bolts, socket screws, and fittings
- VERSATILITY: Includes 1/8”-1/4”, ¼”-5/16”, 5/16”-7/16”, 7/16”-9/16”, 9/16”-3/4” extractors
- EAST OF USE: Left hand spiral design for extra gripping power
SaleBestseller No. 3
Valkynos 26 Pcs Bolt Extractor Kit and Left Hand Drill Bit Reverse Drill Bit Extractor Set, Easy Out Screw Remover Set Tool for Damaged, Rusted, Broken, Stripped Bolts Screw Nuts, with Hex Adapter
- Product Set Size——26 pcs bolt screw extractor includes 13 bolt extractors (1/4", 5/16"(8mm), 3/8", 10mm, 7/16"(11mm), 12mm, 1/2", 13mm, 9/16"(14mm), 5/8"(16mm), 17mm, 11/16", 3/4"(19mm)); 6 left-hand drill bits (3/8", 9/32", 1/4", 5/32", 1/8", 3/32"); 6 spiral screw extractors (#1, #2, #3, #4, #5, #6), and 1 hex adapter (1/4"-3/8").
- High Hardness & Durability——The bolt screw extractor set is made from Cr-Mo steel and 4341/6542 HSS, this set offers excellent durability, corrosion resistance, and hardness, and can be repeated use without worrying about breakage.
- Nut Remover & Adapter——Reverse spiral groove design provides maximum grip and torque for fixing bolts. The standard 3/8-inch drive with a 1/4"-3/8" hex adapter works with impact wrenches, tap handles, and ratchet wrenches to extractor metric and standard fasteners, such as frozen, rusted, damaged, stripped, round, and hex head bolts, nuts, screws.
- Left-hand Drill Bit & Spiral Screw Extractors: Titanium-coated HSS drill bits with 135° angles cut easily with less resistance, while left-hand flutes clear debris to reduce friction. Use with impact wrenches for better drilling results on broken bolts. Spiral screw extractors provide a strong grip to remove broken bolts and screws from wood through drilled holes.
- Portable & Reliable——The heavy-duty blow-molded storage box remains sturdy and durable, keeps the extractors in order, is safe and stable, easy to carry and use. The extractor surface has laser-etched sizes for easy identification, perfect for automotive, home, and mechanical repairs, an ideal choice for professionals and DIY enthusiasts.
SaleBestseller No. 4
Gifts for Men,Damaged Screw Extractor Set-Father's Day Gifts from Wife Daughter Son,Mens Gifts,Husband,Stripped Screws Nuts & Bolts Drill Bit Tools for Easy Removal of Rusty Broken Hardware Gifts
- APPLY TO MOST DRILLS : 6 pieces screw extractors work with any drill and all the screw size or bolt (3-12mm), These extractor tools are used to reverse the damaged screw counterclockwise until it is released
- The DIY Tools for Men-Men won't know they need screw extractor set until they have one! This screw extractor set is GIFTS WRAP AVAILABLE, can be gifted to your loved ones as it reflects a fresh trend with fun and practical. Amazing and Unique tool gifts for men women. The must have stocking stuffers for men, gifts for dad, husband, father, him, guy teens, adult, Boyfriend, son on Birthdays, Christmas, Fathers Day or anniversary. Perfect Holiday Gifts Guide
- HIGH QUALITY - This damaged screw remover tool kit is made from High-Speed Steel H.S.S 4341# , which have high hardness of 63hrc, it's durable and easily to remove any damaged screws.
- EASY TO USE: Just two simple steps to get the job done - drill a hole with a cutting size using the right size screw extractor and easily remove the screw or bolt using the removal tool Hardness 63-65HRC: Titanium hardened steel material, more durable than most screw extractors on the market, better hardness and durability than others, buy with confidence and complete peace of mind
- Cool Gadgets for Men Dad Christmas Birthday Gifts for Men and Women - Men won't know they need screw extractor sets until they have one! Every screw has the potential to rust and break, which can create a situation where it cannot be removed. Owning it, there will be no anxiety about rusty screws. This screw extractor set is GIFTS WRAP AVAILABLE, can be gifted to your loved ones as it reflects a fresh trend with fun and practical. Amazing and unique tool gifts for men women. A must have stocking stuffer for men on birthdays, Christmas, Father's Day or anniversaries, a gifts for dads, husbands, fathers, him, adults, boyfriends, sons. The best and most practical and surprising Christmas gifts
Bestseller No. 5
BOSCH BSPE6D 12-Piece Assorted Set Spiral Flute High-Carbon Steel Screw Extractor & Black Oxide Drill Bits Ideal for Removing Stripped Screws, Bolts, Fasteners
- Screw extractors – used for removing stripped screws, bolts and other fasteners
- Left-hand flutes – grip the metal firmly
- Heat-treated carbon steel – provides superior durability
- Rolled threads – deliver more accuracy and are cleaner than machined threads
- Rust- and tarnish-resistant design – provides greater durability and accuracy
Bestseller No. 6
UYECOVE 14 Pieces Screw Extractor Set, 35# Cr-Mo & 6542 HSS Steel Cobalt Left Hand Drill Bits Set for Removing Stripped Screws and Broken Bolts Ez Out Screw Extractor Set Broken Bolt Extractor Kit
- ★ Diverse Sizes - 14 pieces Extractor Screw Extractor Set. Working sizes - 19/64",1/4",3/16",2*5/32",2*1/8". Spiral screw extractors include 2*1#, 2*2#, 3#, 4#, 5#. Impact drive for all kinds of job applications.
- ★ Easily Remove - Helps faster removing broken studs, bolts, socket screws, and fittings. Broken bolt extractor kit removes damaged screws, whether working on wood or metal. Impact drive for all kinds of job applications.
- ★ Durability - Made of impact-resistant 35#cr-mo and 6542 HSS steel material, good process performance, high strength and toughness, suitable for impact resistant metal cutting tools, also can manufacture high temperature bearings and cold extrusion dies.
- ★ Easy to Pick and Carry - The entire screw extractor set is packed in a plastic box for easy storage. You can take it to any corner of the world, Whatever bolt extractor sets for car maintenance or daily use. It can provide you with great convenience.
- ★ UYECOVE Service -If the product has quality problems, we can replace or refund it.If you have any product issues, we're very happy to help you solve the problem within 24 hours.
Bestseller No. 7
Coobeast Bolt Extractor Set Heavy Duty, 13Pcs Bolt Extractor Kit with 3/8 Inch Adapter, Stripped Lug Nut Remover, Easy Out Bolt Remover Set for Rusted, Rounded, Damaged Nuts Screws
- PREMIUM & DRABLE - All bolt extractors are made of high-hardness chrome-molybdenum steel with a sandblasted finish for superior durability and longer life. Full sizes include SAE (inches) and metric (mm): 1/4", 5/16"(8mm), 3/8", 10mm, 7/16"(11mm), 12mm, 1/2", 13mm, 9/16"(14mm), 5/8"(16mm), 17mm, 11/16", 3/4"(19mm). 13 size options are available to help out of tough spots.
- EXCELLENT GRIP - The special internal thread design of bolt extractor interior is precision engineered, and the reverse helical grooves are designed to snap in for maximum holding force, providing excellent torque, easy to use and remove peeled, rusted or frozen, damaged bolts, nuts and screws in car repair and industrial instrumentation.
- MECHANIC TOOL - Each bolt remover with a standard 3/8-inch drive, uses the 1/4"-3/8" hex adapters that can connect with a common impact wrench, tap handle, and ratchet wrench. Easily remove lug nut, oil drain plug, broken and seized bolts. Perfect for every home and mechanic, home repairs, auto repairs, and mechanical repairs. A great addition to toolset, worth every penny spent.
- STURDY SAFE STORAGE - All bolt extractors are laser etched is convenient to identify and use. Heavy duty blow molded case keeps all the bolt remover stay organized. Sturdiness and Durability. The palm-sized box design is easy to carry and store.
- WIDE APPLICATION&RELIABLE - Complete range of sizes meets most mechanical maintenance, automotive, home decor or craft production repair needs. Coobeast tools have quality assurance, feel free to contact us if there are any problems with the product. We provide you with service in the first time.
Bestseller No. 8
NEIKO 04204A Hex-Head Multispline Screw and Bolt Extractor Set, Easy-Out Screw Extraction, Broken Bolt Remover, Stripped Fastener Tool, 1/8 Inch to 7/8 Inch in 1/32-Inch Increments, CrMo, 25 Pieces
- HEAVY-DUTY DAMAGED-SCREW EXTRACTOR SET: Tackle frozen, broken, stripped, and damaged screws and bolts with this set of screw extractors. These extractors will help you remove even the toughest broken fasteners with speed and efficiency.
- DURABLE BOLT-EXTRACTOR SET: Each industrial-grade extractor is constructed from premium chrome molybdenum steel for superior toughness. The aggressive multiplane teeth feature a left-hand spiral design to provide extra gripping power and faster threading.
- EASY-OUT BOLT-EXTRACTOR SET: This damaged-screw extractor set contains 25 pieces that feature precision-engineered and precision-machined hexagon heads for applying maximum torque when paired with wrenches or sockets.
- THE RIGHT SIZE: Always have the right extractor bit when it’s time to deal with broken or frozen screws. This set has extractors from 1/8 inch (3.5 mm) to 7/8 inch (23 mm) in 1/32-inch increments. Each piece has a laser-etched marking for easy identification.
- VERSATILE: Our extractor set comes in a durable and convenient storage case for easy storage and travel. It’s ideal for use at home, in the garage, at the construction site, or in your shop.
SaleBestseller No. 9
Upgrade Bolt Extractor Kit, 32 Piece Stripped Bolt Extractor Socket Set, Rounded Bolt Remover, Lug Nut Remover with ¼ Inch and ⅜ Inch Adapter for Removing Damaged Frozen Rusted Rounded-Off Bolts Nuts
- Easy Removal: The bolt extractor kit is designed for effortlessly removing damaged, frozen, rusted, or rounded-off bolts, nuts, and screws, ensuring a hassle-free solution for a variety of fastener challenges.
- Superior Gripping Power: Our plum-shaped easy out bolt extractor design, featuring reverse spiral flutes, providing maximum gripping power that bites down as you turn. say goodbye to frustration and hello to efficiency in nut and bolt removal.
- Versatile Compatibility: This rounded bolt remover includes 29 sizes, equipped with ¼ inch and ⅜ inch adapters and a extractor bar, compatible with manual, pneumatic, or power tools for a wide range of applications. including automotive repairs, wheel lock removal, home mechanical projects, and industrial machinery maintenance.
- Suitable for Narrow Space: The slim design of the extractor socket allows access to tight spaces where others can't, providing flexibility and adaptability in various work environments. upgrade your toolkit with this
- Exceptional Durability: Crafted from high-quality chrome-molybdenum steel and treated with a black phosphate finish, extractor set guarantees exceptional durability and an extended lifespan, neatly organized in a durable storage box for convenience.
Bestseller No. 10
GEARWRENCH 4 PC. Bolt Biter Screw Extraction Set - 84787, Chrome, Large
- Tapered side and tip cutting edges for powerful and consistent extraction
- High strength steel provides up to 50 times longer life
- Bi-directional design loosens or tightens damaged fasteners
- Hex base design is compatible with hand and power tools
- High-visibility laser markings for easy size identification
Last update on 2025-05-08 / Affiliate links / Images from Amazon Product Advertising API
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SEOCONTENT-START
#05-06-01-026B: Information On Torque to Yield Bolt Breakage and Use of Bolt Extractor Tool Kit Part Number EN-47702 for Removing Broken Cylinder Head or Main Bearing Cap Bolts on Inline Truck Engines (OCT 21, 2008)
| Subject: | Information On Torque to Yield Bolt Breakage and Use of Bolt Extractor Tool Kit Part Number EN-47702 for Removing Broken Cylinder Head or Main Bearing Cap Bolts on Inline Truck Engines |
| Models: | 2004–2007 Buick Rainier |
| 2002–2009 Chevrolet TrailBlazer | |
| 2004–2009 Chevrolet Colorado | |
| 2002–2009 GMC Envoy | |
| 2004–2009 GMC Canyon | |
| 2002–2004 Oldsmobile Bravada |
|
| 2006–2009 HUMMER H3 |
|
| 2005–2009 Saab 9-7X |
|
| with 2.8L, 2.9L, 3.5L, 3.7L or 4.2L Vortec Inline Engine (VINs 8, 9, 6, E, S — RPOs LK5, LLV, L52, LLR, LL8) |
This bulletin is being revised to add model years. Please discard Corporate Bulletin Number 05-06-01-026A (Section 06 — Engine/Propulsion System).
A Torque To Yield (TTY) bolt, like a cylinder head bolt or main bearing cap bolt, may break during repair procedures.
Interaction between a TTY bolt and threads may cause the bolt to bind or break on removal.
Prior to removing the cylinder head or main cap bolts, perform the following procedure:
Using an appropriately sized punch and hammer, rap on the head of each bolt.
The vibration produced by this procedure will assist in successful removal.
If a head bolt or main bolt breaks during engine disassembly, a broken bolt extractor kit (EN-47702) has been released to assist in removal of the remaining bolt segment.
Many times the remaining bolt segment will back out easily with a pick tool or a reverse twist drill bit.
Bolt Replacement & Tightening
Important: Never reuse TTY main bearing or cylinder head bolts. Always make sure that the engine block threaded holes are clean and do not place oil or threadlocker on the bolts.
Utilize a thread chase tool followed by cleaning with dry compressed air to insure threads are clean and dry prior to installation of new TTY bolts.
Bolts that creak and snap while tightening will fail due to excessive torque caused by threads contaminated with debris, antifreeze or oil.
Trace amounts of oil or antifreeze will cause this condition. In extreme cases the threads may need additional cleaning with a non-residue cleaner like a brake clean product followed by drying with clean & dry compressed air.
Bolt Extractor Tool Kit Part Number EN-47702
The bolt extractor kit EN-47702 provides the following components to assist in removal of the broken bolt segment:
- One 5/32″ reverse twist drill – part number EN-47702-6
- One double-ended drill pilot insert – part number EN-47702-1 (ensures a straight drilling procedure)
- Drill pilot inserts for larger diameter heads or main cap bolts – part number EN-47702-2 (ensure a straight drilling procedure)
- Bolt extraction #3 EZ out – part number EN-47702-3 (after the drilling procedure)
- Bottom tap (M11 X 2) – part number EN-47702-5 (for the head bolts to chase the threads after the completion of bolt removal)
- Bottom tap (M10 X 1.5) – part number EN-47702-4 (for the main bolts to chase the threads after the completion of bolt removal)
SEOCONTENT-END
