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Introduction
| Revision | Summary of Changes in SEBF8882 |
|---|---|
| 27 | Changed effectivity to All Caterpillar Products. |
| 26 | Added new serial number prefixes for New Product Introduction (NPI). |
© 2019 Caterpillar® All Rights Reserved. This guideline is for the use of Cat dealers only. Unauthorized use of this document or the proprietary processes therein without permission may be violation of intellectual property law.
Information contained in this document is considered Caterpillar: Confidential Yellow.
This Reuse and Salvage Guideline contains the necessary information to allow a dealer to establish a parts reusability program. Reuse and salvage information enables Caterpillar dealers and customers to benefit from cost reductions. Every effort has been made to provide the most current information that is known to Caterpillar. Continuing improvement and advancement of product design might have caused changes to your product which are not included in this publication. This Reuse and Salvage Guideline must be used with the latest technical information that is available from Caterpillar.
For technical questions when using this document, work with your Dealer Technical Communicator (TC).
To report suspected errors, inaccuracies, or suggestions regarding the document, submit a form for feedback in the Service Information System (SIS Web) interface.
Canceled Part Numbers and Replaced Part Numbers
This document may not include canceled part numbers and replaced part numbers. Use NPR on SIS for information about canceled part numbers and replaced part numbers. NPR will provide the current part numbers for replaced parts.
Important Safety Information
| |
| Illustration 1 | g02139237 |
Work safely. Most accidents that involve product operation, maintenance, and repair are caused by failure to observe basic safety rules or precautions. An accident can often be avoided by recognizing potentially hazardous situations before an accident occurs. A person must be alert to potential hazards. This person should also have the necessary training, skills, and tools to perform these functions properly. Safety precautions and warnings are provided in this instruction and on the product. If these hazard warnings are not heeded, bodily injury or death could occur to you or to other persons. Caterpillar cannot anticipate every possible circumstance that might involve a potential hazard. Therefore, the warnings in this publication and the warnings that are on the product are not all inclusive. If a tool, a procedure, a work method, or operating technique that is not recommended by Caterpillar is used, ensure that it is safe for you and for other people to use. Ensure that the product will not be damaged or the product will not be made unsafe by the operation, lubrication, maintenance, or the repair procedures that are used.
Safety precautions and warnings are provided in this manual and on the product. If these hazard warnings are not heeded, bodily injury or death could occur to you or to other persons.
The hazards are identified by the safety alert symbol which is followed by a signal word such as danger, warning, or caution. The "WARNING" safety alert symbol is shown below.
| |
| Illustration 2 | g00008666 |
This safety alert symbol means:
Pay attention!
Become alert!
Your safety is involved.
The message that appears under the safety alert symbol explains the hazard.
Operations that may cause product damage are identified by "NOTICE" labels on the product and in this publication.
Caterpillar cannot anticipate every possible circumstance that might involve a potential hazard. The safety information in this document and the safety information on the machine are not all inclusive. Determine that the tools, procedures, work methods, and operating techniques are safe. Determine that the operation, lubrication, maintenance, and repair procedures will not damage the machine. Also, you must determine that the operation, lubrication, maintenance, and repair procedures will not make the machine unsafe.
The information, the specifications, and the illustrations that exist in this guideline are based on information which was available at the time of publication. The specifications, torques, pressures, measurements, adjustments, illustrations, and other items can change at any time. These changes can affect the service that is given to the product. Obtain the complete, most current information before you start any job. Caterpillar dealers can supply the most current information.
Summary
This Reuse and Salvage Guideline will provide examples, guidelines, and reference materials. These items will help you understand the technology, tools, and supplies that are required to repair many common types of damage.
It covers a new Threaded Insert that contains the capability to repair damaged threaded holes in castings in a unique way that adds strength to the site of repair.
Proper training is recommended before using the products that are contained in this guideline.
For more information or questions concerning Lock-N-Stitch, contact Lock-N-Stitch. For a complete catalog of products, contact Lock-N-Stitch. See www.locknstitch.com for more repair procedures, training, and catalogs.
Lock-N-Stitch Inc.1015 S. Soderquist Rd.
Turlock, CA 95380
(209) 632-2345
(800) 736-8261
fax (209) 632-1740
Service Letters and Technical Information Bulletins
| NOTICE |
|---|
|
The most recent Service Letters and Technical Information Bulletins that are related to this component shall be reviewed before beginning work. Often Service Letters and Technical Information Bulletins contain upgrades in repair procedures, parts, and safety information that pertain to the parts or components being repaired. |
Tooling and Equipment
| Required Tools | |
|---|---|
| Part Number | Part Description |
| Center punch | |
| 3/8 inch Impact | |
| Air Drill (3/8 inch) (2200 rpm) | |
| Air Drill (1/2 inch) (900 rpm) | |
| 1/4 inch Die Grinder | |
| Air Hammer (with pointed tip) | |
| 3/8 inch Ratchet | |
| Crack Detection Kit | |
| Tap Wrench (Pneumatic) | |
| 5/16 in 6 point socket (3/8 inch drive) | |
| 3/8 inch 6 point socket (3/8 inch drive) | |
| Ball Peen Hammer | |
| Carbide Bur (1/4 inch shank) | |
| 4 1/2 inch Grinder | |
| - | Pneumatic needle scaler |
| - | Mounted stones (1/4 inch shank) |
| - | 1/4 inch 6 point socket (3/8 inch drive) |
Measurement Requirements
| NOTICE |
|---|
|
Precise measurements shall be made when the component and measurement equipment are at |
Problems with Cast Iron Welding
Welding on cast iron without preheating the iron to an appropriate temperature causes two serious problems. You could have the following problems if you braze cast iron with an oxyacetylene torch without preheating the material above
- Expansion and contraction may cause stress and new cracks.
- The iron may harden next to the weld.
Stress and New Cracks
A person that is welding without first heating the casting to a high enough temperature will cause stress and new cracks if the weld is surrounded by colder iron. The point that cast iron yields is equal to the tensile strength of cast iron. Therefore, cast iron cannot stretch to relieve stress. Steel and most other metals can stretch to relieve stress. Any metal that can be bent without breaking can be welded without having a high temperature preheat. Stress relief takes place between
A high temperature preheat creates an artificial yield point or a temporary yield point lower than the tensile strength. This allows the surrounding iron to stretch as the weld is cooling and contracting. This prevents stress from developing. If you heat a piece of steel, you can bend the steel easily. Similarly, if you heat cast iron, the cast iron will stretch instead of cracking.
Hardening
When the weld or the Heat-Affected Zone cools too fast the result is hardening. Rapid cooling of high carbon iron and steels will cause hardening. Hardening results in brittle cast iron and the loss of good properties such as vibration dampening and ductility. Hardening will also make machining, drilling, and tapping difficult or impossible.
The following two rules apply:
- The cast iron was not preheated to a high enough temperature if cracks develop in the weld or if cracks develop around the weld.
- The iron cooled too fast if the iron gets hard.
Corners and ears can be welded without stress and additional cracks, because the iron is free to expand and the iron is free to contract without causing stress. However, hardening will still occur if the iron is allowed to cool too fast. The material of the welding rod is not important. The process is not important. The heat causes cracks and hardening.
Lock-N-Stitch
Lock-N-Stitch is a repair procedure to fix cracks that could not otherwise be repaired. In parts such as blocks, cases, and ductile iron wheels that cannot be welded easily, Lock-N-Stitch offers a repair that avoids the problems of cast iron welding.
Basic Metal Stitching
| |
| Illustration 3 | g06381963 |
The four steps of metal stitching:
- Drill the bolt hole pattern for the lock.
- Install the lock.
- Install stitching pins.
- Grind the surface of the repair so that the surface of the repair is flush with the surface of the component.
The four steps of metal stitching make easy repairs that are pressure tight. Metal stitching is a simple concept. The crack or the joint is removed. The crack or the joint is replaced with an overlapping series of stitching pins. Locks are installed at intervals along the length of the repair for added strength. Cracked bolt holes can be repaired. Bow-out holes can be repaired. Sections of the casting that have been severed can be repaired.
Description of Pins, Locks, and Threaded Inserts
CASTMASTER Series Stitching Pins or C Series Stitching Pins
| |
| Illustration 4 | g06381966 |
|
CASTMASTER Series Stitching Pins or C Series Stitching Pins | |
CASTMASTER Series Stitching Pins or C Series Stitching Pins utilize a unique thread design. This thread design adds strength across the crack. When the stitching pin is tight, the force of the patented threads opposes the force of the angle of the shoulder. This creates a clamping force and a radial force that draws the opposite sides of the crack together.
C Series Stitching Pins are installed in an overlapping fashion along the crack until the entire crack has been removed and replaced by interconnecting Stitching Pins. C Series Stitching Pins also have a groove above the shoulder. The Stitching Pin head will break off at the proper torque. Excess metal from the pins is then grounded flush to the surface of the casting.
L Series Stitching Pins
| |
| Illustration 5 | g06381968 |
|
L Series Stitching Pins | |
L Series Stitching Pins utilize standard threads with an interference fit to the tapped hole. When the pins are tightened, the pins exert a force that spreads. The force that spreads is important in some cases. L Series Stitching Pins feature a groove that causes the Stitching Pins to break off at the same torque. Use L Series Stitching Pins on a patch. Use L Series Stitching Pins when the angle of installation to the surface exceeds 20°. The shoulder that is tapered crushes into the surface and the shoulder that is tapered leaves an invisible finish.
Locks
| |
| Illustration 6 | g06381969 |
|
Locks | |
Locks are used to add more strength to the repair. The locks are made of high strength 4140 steel and heat treated to 175,000 psi tensile strength. The hole pattern is created with a set of drill jigs. The drill jigs are precise. The drill jigs are designed for use with a hand drill. Locks are installed to a depth of 80% of the thickness of the castings wall.
The locks induce a slight pulling force across the crack when the Locks are installed. This force prevents the crack from extending and this force keeps the repair tight. Locks are available in multiple styles and sizes. The multiple styles and sizes accommodate different applications.
Full-Torque Threaded Inserts
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| Illustration 7 | g06381970 |
|
Full-Torque Threaded Inserts | |
This is a new concept in repairing threaded holes.
All bolts and studs produce a significant radial force that spreads when the bolts and studs are torqued. In metals with low strength such as cast iron, brass, and aluminum, this force that spreads often results in cracks. During a rebuild, most cracks are found in threaded holes. During repair work, most cracks are found in threaded holes. Cracked bolt holes can be repaired by using Full-Torque threaded Inserts. Threads that are stripped can be repaired by using Full-Torque threaded inserts.
Full-Torque threaded Inserts use the same threads as the Castmaster Series Stitching Pins. These inserts will contain the force that spreads of the fastener. These inserts will only transfer a radial force that draws the surrounding material.
Full-Torque threaded Inserts are available in the style of through hole and the style of blind hole. Threaded Inserts are available with shoulders and without shoulders. Solid plugs are available to repair badly damaged holes. After installing the plug, a new hole can be drilled and tapped in the proper location.
Typical Applications for Stitching Pins
The Stitching Pin style is based on the following requirements and conditions.
C Series Stitching Pins
This Stitching Pin style utilizes a patented thread design. Standard thread designs cause a force that spreads in the radial direction. The patented thread design reverses the force in the radial direction. The patented thread design creates a force that draws in the radial direction. This force strengthens the joint of the repair. These pins should be used in all structural repairs when strength is required and the force that spreads from L Series Stitching Pins could cause the crack to extend. Do not install C Series Stitching Pins if the angle is greater than 20° between the perpendicular and the surface. In through installations, you will need to spot face each drilled hole to provide a recess. The shoulder of the pin will seat into the recess. You can eliminate spot facing if cracks are repaired in thick sections. In a thick section, screw the Stitching Pins until the Stitching Pins contact the bottom surface. An example of a thick section is a
C Series Stitching Pins can be used in most Class A repairs. These Stitching Pins should be used in some Class B repairs. These Stitching Pins should be used in all Class C repairs and Class D repairs. Refer to the "Repair Requirements and Physical Conditions" section in this Reuse and Salvage Guidelines for requirements for each class. The following examples of repairs were completed with C Series Stitching Pins.
- All cracks that are placed in tension across the repair
- All cracks that run parallel with an inside or outside corner
- All cracks that will be strained by torquing a bolt close to the repair
- The access and the contour of the part prohibits using locks.
L Series Stitching Pins
L Series Stitching Pins create a force that spreads radially against the sides of the crack after the Stitching Pins are tightened. This force is also created by any standard threaded fastener. However, L Series Stitching Pins have the ability to seal due to the interference fit of the threads. L Series Stitching Pins are used in many simple repairs that meet Class A repair conditions and some Class B repair conditions according to the "Repair Requirements and Physical Conditions" section in this Reuse and Salvage Guideline. L Series Stitching Pins are often used in conjunction with locks.
These pins can be installed at any angle to the surface. These pins are used to repair the following types of cracks:
- Combustion chambers of cylinder heads
- Blow out holes in engine blocks.
- Pin holes
- Scratches, dents, and imperfections on machined surfaces
- Simple cracks less than
76 mm (3.0 inch) in length - The metal that surrounds the crack or the joint is strong enough to contain the force that spreads.
Selection for Stitching Pins and Locks
The thickness of the casting or the depth of the crack determines the length of the Stitching Pin.
| Stitching Pin Selection | |
|---|---|
| Thickness of Metal | Stitching Pin |
| |
C1
L4 |
| |
C2F
L6 L8 |
| |
C3
L8 |
| |
C3
C4 |
Repair Requirements and Physical Conditions
Note: Requirements and Conditions are listed as Class A repairs, Class B repairs, Class C repairs, and Class D repairs.
| Requirement for Strength | |
|---|---|
| Class | Requirement |
| Class A repairs | None |
| Class B repairs | Minimum |
| Class C repairs | Moderate |
| Class D repairs | Maximum |
| Requirement for Sealing | |
|---|---|
| Class | Requirement |
| Class A repairs | None |
| Class B repairs | Splash or reservoir |
| Class C repairs | Low |
| Class D repairs | High |
| Contour of the Surface | |
| Class | Requirement |
| Class A repairs | Flat |
| Class B repairs | Somewhat flat |
| Class C repairs | Inside corner or outside corner |
| Class D repairs | Radius |
| Length of Crack or location | |
| Class | Requirement |
| Class A repairs | Less than two inches in length |
| Class B repairs | Confined by surrounding metal |
| Class C repairs | Extending from an edge |
| Class D repairs | Structural area |
| Length of Crack or location | |
| Class | Requirement |
| Class A repairs | Impact or freezing |
| Class B repairs | Heat |
| Class C repairs | Normal working conditions |
| Class D repairs | Unknown |
Understanding the Placement of Locks
Locks need to be added to the repair when more strength is required. Always make the repair as strong as possible so that the repair will last through moments of extreme operating conditions. Try to use the lock with the largest size that is practical to use for the application. Locks can be stacked on top of each other to reach a depth of 80% of the thickness of the casting. Stack the bottom Locks into the hole pattern. Put one Lock on the surface. This lock should be high enough to finish grinding the excess metal or this lock should be high enough to machine the excess metal.
The minimum spacing between the locks is 1/2 of the length of the locks. Spacing between locks is measured from any point on one lock to any closest point on an adjacent lock. Locks should be used on all Class C repairs and all Class D repairs. You should try to use locks on other types of structural repairs, when possible.
Table for Selection of Locks
Use the following table to choose the size of the locks for repairs. The selection is based on wall thickness and recommended maximum installation depth.
| Selection of Locks | ||
|---|---|---|
| Lock | Wall Thickness | Maximum Depth |
| L10 | |
|
| L15/5 | |
|
| L15 | |
|
| L20 | |
|
| L30 | |
|
| L40 | |
|
| L50 | |
|
| L60 | |
|
Caterpillar Lock-N-Stitch Kit for Repairing Cracks
Parts that are available through the Caterpillar Distribution Network are listed in Table 10. These parts are included in 263-7147 Lock-N-Stitch Kit (crack repair). These parts can be ordered separately through the Caterpillar Distribution Network. Contact Lock-N-Stitch to order products that are not included in the kit.
Note: Refer to Table 12 if you already have Lokc-N-Stitch Repair Kits. Table 12 is in the "263-7147263-7147263-7147263-7147Part Number Equivalents for
A technician should be trained before that person uses 263-7147 Lock-N-Stitch Kit (Crack Repair). Training is available from Lock-N-Stitch at your site, on DVD, and at Lock-N-Stitch offices. Contact Lock-N-Stitch for more information.
Note: Separate parts are sold in the following quantities:
- 100 Stitching Pins
- 100 Locks
- 1 Other Parts
| 263-7147 Lock-N-Stitch Kit (Crack Repair) for Caterpillar Parts | |
|---|---|
| Part Number and Description | Part Number and Description |
| 263-7184 Crack Detection Kit (Magnetic Particle) | 263-7221 Pin Set (C3C Series Stitching Pin) |
| 263-7190 Tap Wrench (Pneumatic) | 263-7222 Pin Set (C3D Series Stitching Pin) |
| 263-7193 Pin Set (L6AS Series Stitching Pin) | 263-7223 Roughing Tap (for use with C3 Stitching Pin) |
| 263-7194 Pin Set (L6A Series Stitching Pin) | 263-7224 Finishing Tap (for use with C3 Stitching Pin) |
| 263-7195 Pin Set (L6B Series Stitching Pin) | 263-7225 Bottom Tap (for use with C3 Stitching Pin) |
| 263-7196 Pin Set (L6CSeries Stitching Pin) | 263-7226 Drill Bit Set (O Size) (for use with C3 Stitching Pin) |
| 263-7197 Drill Bit Set (Wire 7 Bit) (for C-3 Stitching Pin and L6 Stitching Pin) | 263-7227 Spotface Tool (for use with C3 Stitching Pin) |
| 263-7198 Starting Tap (for use with L6 Stitching Pin) | 263-7228 Drill Stop (for use with C3PSF Spotface Tool) |
| 263-7199 Bottom Tap (for use with L6 Stitching Pin) | 263-7230 Lock Set (L15/5 Crack Repair) |
| 263-7200 Pilot Tap (for use with L6 Stitching Pin) | 263-7232 Drill Bit Set (Wire 15 Size) |
| 263-7201 Drill Jig (for use with L6 Stitching Pin and C2F Stitching Pin) | 263-7233 Drill Stop (for use with Wire 15 Drill Bit) |
| 263-7202 Pin Set (L8AS Series Stitching Pin) | 263-7234 Drill Bit Set (for use with L15/5 Lock and L15/5JS Lock) |
| 263-7203 Pin Set (L8A Series Stitching Pin) | 263-7235 Lock Set (L15/5 Crack repair) |
| 263-7204 Pin Set (L8B Series Stitching Pin) | 263-7236 Lock Set (L15/5 Crack Repair) |
| 263-7205 Thread Tap (for use with L8 Stitching Pin) | 263-7238 Drill Bit Set (3/16 in and 3/32 in drill bits) |
| 263-7206 Bottom Tap (for use with L8 Stitching Pin) | 263-7239 Drill Jig (L15 Lock, with locating pins) |
| 263-7207 Pilot Tap (for use with L8 Stitching Pin) | 263-7240 Drill Stop (for use with 1/8 in drill bit) |
| 263-7208 Drill Bit Set (L Size, for use with L8 Stitching Pin) | 263-7241 Drill Stop (for use with 3/16 in drill bit) |
| 263-7209 Pin Set (C2FA Series Stitching Pin) | 263-7242 Lock Set (L20B Crack Repair- Bottom) |
| 263-7210 Pin Set (C2FB Series Stitching Pin) | 263-7243 Lock Set (L20S Crack Repair-Surface) |
| 263-7211 Pin Set (C2FC Series Stitching Pin) | 263-7244 Drill Bit Set (1/8 in) |
| 263-7212 Pin Set (C2FD Series Stitching Pin) | 263-7245 Drill Jig (L20 Lock, with locating pins) |
| 263-7213 Pin Set (C2FE Series Stitching Pin) | 263-7246 Drill Stop (for use with 1/4 in drill bit) |
| 263-7215 Finishing Tap (for use with C2F Stitching Pin) | 263-7249 Grinding Wheel (3 in, with mandrel) |
| 263-7216 Bottom Tap (for use with C2F Stitching Pin) | 263-7250 Drill Jig (pin spacing) (for use with L8 Stitching Pin) |
| 263-7217 Spotface Tool (for use with C2F Stitching Pin) | 263-7251 Drill Jig (pin spacing) (for use with C3 Stitching Pin) |
| 263-7218 Drill Stop (for use with L6 Stitching Pin) | 263-7253 Collet (for use with 5/16 in tap shank to 3/8 in tap shank) |
| 263-7219 Pin Set (for use with C3A Stitching Pin) | 263-7254 Tap Adapter (quick change for C2F tap and L6 tap) |
| 263-7220 Pin Set (for use with C3B Stitching Pin) | |
Full-Torque Threaded Inserts for Repair
The inserts are available in four different styles. The inserts are available in all popular sizes to match most requirements for threaded holes. Solid plugs are also available. Solid plugs can be drilled and tapped after installation. This allows you to meet your needs for unusual damaged holes or badly damaged holes. The following examples show the different styles that are available.
FFT Threaded Inserts
| |
| Illustration 8 | g06381972 |
|
FFT Threaded Inserts | |
Install FFT Threaded Inserts so that the Threaded Inserts are flush to the surface with the through hole. Use FFT Threaded Inserts when the bolt hole passes completely through the other side.
FFB Threaded Inserts
| |
| Illustration 9 | g06381973 |
|
FFB Threaded Inserts | |
Install FFB Threaded Inserts so that the Threaded Inserts are flush to the surface. FFB Threaded Inserts have a bottom that seals against leaks. FFB Threaded Inserts are also available in specific designs with a counterbore to match existing profiles of holes for many head bolts and match existing profiles of holes for main bearing cap bolt holes that are cracked.
FST Threaded Inserts
| |
| Illustration 10 | g06381975 |
|
FST Threaded Inserts | |
FST Threaded Inserts utilize a locking collar to add strength. Install the Threaded Insert so that the collar is protruding above the surface slightly. Machine the Threaded Insert so that the Threaded Insert is flush with the surface. Use this style when the bolt is subject to side loading.
FSB Threaded Inserts
| |
| Illustration 11 | g06381976 |
|
FSB Threaded Inserts | |
FSB Threaded Inserts are similar to the FST Threaded Inserts. The FSB Threaded Inserts are different because the FSBhave a solid end for sealing the bolt hole.
FSP Solid Plugs
| |
| Illustration 12 | g06381977 |
|
FSP Solid Plug | |
FSP Solid Plugs can be used to repair badly damaged bolt holes that are not in the original location. You can plug a hole that has been incorrectly drilled with a FSP Solid Plugs. Simply install the solid plug. Then drill a new hole in the correct location. Then tap a new hole in the correct location.
Caterpillar Full Torque Thread Insert Kits
Table 11 lists a standard Full Torque Thread Insert Kit that is available through Lock-N-Stitch. To order a Full Torque Thread Insert Kit or piece parts contact Lock-N-Stitch at 1-800-736-8261 or visit www.locknstitch.com.
| Standard Full Torque Thread Insert Kit |
|---|
| Description |
| Roughing Tap |
| Finishing Tap |
| Threaded Insert |
| Insert Installation Tool |
| Threaded Insert |
| Bit Holder |
| Fluid |
| Sealant |
Lock-N-Stitch Threaded Inserts for Repair
- Cracked bolt hole
Show/hide table
Illustration 14 g06381979 - The bolt hole is drilled and tapped. Thread sealant is applied to the tapped hole. The insert is screwed into the tapped hole. The insert should be torqued until the insert is completely seated in the hole.
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Illustration 15 g06381980 - The surface is finished and the bolt hole is restored.
| |
| Illustration 13 | g06381978 |
Stitching Pins and Lock-N-Stitch Threaded Inserts for Repair
- 3406 block with a cracked head bolt hole
Show/hide table
Illustration 17 g06381983 - The crack is first metal stitched with CASTMASTER Series Stitching Pins. The first series of holes are drilled with the Drill Jig. The holes are then spot faced. The holes are then tapped.
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Illustration 18 g06381984 - Tighten the Stitching Pins until the force shears the heads. Install two additional layers of Stitching Pins to create a continuous row of overlapping pins. Then grind the surface flush.
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Illustration 19 g06381986 - The head bolt hole is drilled to the size of the tap for the Full-Torque Threaded Insert. Then tap the hole with the Roughing Tap and the Finishing Tap.
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Illustration 20 g06381987 - Apply an anti-seize compound to the installation tool to prevent the sealant from getting between the tool and the insert. The thread insert is screwed onto the installation tool.
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Illustration 21 g06381989 - Thread sealant is applied to the tapped hole. The insert is screwed into the tapped hole. The insert is torqued until the insert is completely seated in the hole.
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Illustration 22 g06381990 - The drill for the locking pin and the tube for the drill are used to set the depth. The drill for the locking pin and the tube for the drill are also used to drill the hole for the lock pin.
- Add Sealant to Lock Pin.
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Illustration 23 g06381991 - The locking pin is driven into the hole with a hammer.
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Illustration 24 g06381992 - The bolt hole is renewed to the bolt hole's original configuration. The bolt hole is sealed. The high strength steel insert will contain the force of the torqued head bolt.
| |
| Illustration 16 | g06381981 |
Locks
- After the crack has been metal stitched with Stitching Pins, Locks are installed across the repair to add more strength.
Show/hide table
Illustration 26 g06381996 - Three drill jigs are used to drill holes for the Lock. The Number 1 Drill Jig is used to drill the locating holes. The Number 2 Drill Jig is used to drill the large holes. The Number 3 Drill Jig is used to drill the center connecting holes. The L15 is shown in Illustration 26. The L15 uses 3/32 inch drill bits and 3/16 inch drill bits. The length of the Lock is
36 mm (1.4 inch) with22063 kPa (3200 psi) tensile strength.Show/hide table
Illustration 27 g06381997 - The hole patterns for the locks are spaced along the crack.
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Illustration 28 g06382000 - The locks are driven in with a hammer and Stitching Pins are installed at the ends of the locks to prevent backing out.
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Illustration 29 g06382001 - The repair is ground flush on the surface and inspected for gaps. The repair is textured with a pneumatic needle scaler so the surface of the repair resembles the surrounding surface. The completed repair is now ready to be painted. This
102 mm (4.0 inch) long repair can be completed in approximately one hour.
| |
| Illustration 25 | g06381994 |
263-7147263-7147263-7147263-7147Part Number Equivalents for
For Dealers that already have Lock-N-Stitch Kits, Table 12 is included so that you may refill your current kits.
| Lock-N-Stitch Kit Equivalents for Parts in 263-7147 Lock-N-Stitch Kit (CRACK REPAIR) | ||
|---|---|---|
| Caterpillar Part Number | Lock-N-Stitch Part Number | Description |
| 263-7147 | LCSK | Lock-N-Stitch Kit (Crack Repair) |
| 263-7184 | LMC | Crack Detection Kit (Magnetic Particle) |
| 263-7190 | L0-2550 | Tap Wrench (Pneumatic) |
| 263-7193 | L6AS-100 | Pin Set (L6AS Series Stitching Pin) |
| 263-7194 | L6A-100 | Pin Set (L6A Series Stitching Pin) |
| 263-7195 | L6B-100 | Pin Set (L6B Series Stitching Pin) |
| 263-7196 | L6C-100 | Pin Set (L6CSeries Stitching Pin) |
| 263-7197 | L64-02AC | Drill Bit Set (Wire 7 Bit) (for C-3 Stitching Pin and L6 Stitching Pin) |
| 263-7198 | LT6ST-1 | Starting Tap (for use with L6 Stitching Pin) |
| 263-7199 | LT6BT-1 | Bottom Tap (for use with L6 Stitching Pin) |
| 263-7200 | LT6PLT-1 | Pilot Tap (for use with L6 Stitching Pin) |
| 263-7201 | L6500 | Drill Jig (for use with L6 Stitching Pin and C2F Stitching Pin) |
| 263-7202 | L8AS-100 | Pin Set (L8AS Series Stitching Pin) |
| 263-7203 | L8A-100 | Pin Set (L8A Series Stitching Pin) |
| 263-7204 | L8B-100 | Pin Set (L8B Series Stitching Pin) |
| 263-7205 | L8PT-1 | Thread Tap (for use with L8 Stitching Pin) |
| 263-7206 | L8BT-1 | Bottom Tap (for use with L8 Stitching Pin) |
| 263-7207 | L8PLT-1 | Pilot Tap (for use with L8 Stitching Pin) |
| 263-7208 | L84-02AC | Drill Bit Set (L Size, for use with L8 Stitching Pins) |
| 263-7209 | C2FA-100 | Pin Set (C2FA Series Stitching Pin) |
| 263-7210 | C2FB-100 | Pin Set (C2FB Series Stitching Pin) |
| 263-7211 | C2FC-100 | Pin Set (C2FC Series Stitching Pin) |
| 263-7212 | C2FD-100 | Pin Set (C2FD Series Stitching Pin) |
| 263-7213 | C2FE-100 | Pin Set (C2FE Series Stitching Pin) |
| 263-7215 | C2FFT-1 | Finishing Tap (for use with C2F Stitching Pin) |
| 263-7216 | C2FBT-1 | Bottom Tap (for use with C2F Stitching Pin) |
| 263-7217 | C2FPSF-1 | Spotface Tool (for use with C2F Stitching Pin) |
| 263-7218 | LDS-9/32 | Drill Stop (for use with L6 Stitching Pin) |
| 263-7219 | C3A-25 | Pin Set (for use with C3A Stitching Pin) |
| 263-7220 | C3B-25 | Pin Set (for use with C3B Stitching Pin) |
| 263-7221 | C3C-25 | Pin Set (C3C Series Stitching Pin) |
| 263-7222 | C3D-25 | Pin Set (C3DSeries Stitching Pin) |
| 263-7223 | C3RT-1 | Roughing Tap (for use with C3 Stitching Pin) |
| 263-7224 | C3FT-1 | Finishing Tap (for use with C3 Stitching Pin) |
| 263-7225 | C3BT-1 | Bottom Tap (for use with C3 Stitching Pin) |
| 263-7226 | C3DBAC-2 | Drill Bit Set (O Size) (for use with C3 Stitching Pin) |
| 263-7227 | C3PSF-1 | Spotface Tool (for use with C3 Stitching Pin) |
| 263-7228 | LDS-31/64 | Drill Stop (for use with C3PSF Spotface Tool) |
| 263-7230 | L15/5-10 | Lock Set (L15/5 Crack Repair) |
| 263-7232 | L15-/5DB | Drill Bit Set (Wire 15 Size) |
| 263-7233 | LDS-15 | Drill Stop (for use with Wire 15 Drill Bit) |
| 263-7234 | L15-/5JS | Drill Bit Set (for use with L15/5 lock and L15/5JS lock) |
| 263-7235 | L15B-10 | Lock Set (L15/5 Crack Repair) |
| 263-7236 | L15S-10 | Lock Set (L15/5 Crack Repair) |
| 263-7238 | L-15DB | Drill Bit Set (3/16 in and 3/32 in drill bits) |
| 263-7239 | L-15JS | Drill Jig (L15 lock, with locating pins) |
| 263-7240 | LDS-1/8 | Drill Stop (for use with 1/8 in drill bit) |
| 263-7241 | LDS-3/16 | Drill Stop (for use with 3/16 in drill bit) |
| 263-7242 | L20B-10 | Lock Set (L20B Crack Repair-Bottom) |
| 263-7243 | L20S-5 | Lock Set (L20S Crack Repair- Surface) |
| 263-7244 | L-20DB | Drill Bit Set (1/8 in) |
| 263-7245 | L-20JS | Drill Jig (L20 lock, with locating pins) |
| 263-7246 | LDS-1/4 | Drill Stop (for use with 1/4 in drill bit) |
| 263-7249 | LTK-10 | Grinding Wheel (3 in, with mandrel) |
| 263-7250 | L8500 | Drill Jig (Pin Spacing) (for use with L8 Stitching Pin) |
| 263-7251 | C3500 | Drill Jig (Pin Spacing) (for use with C3 Stitching Pin) |
| 263-7253 | L9751 | Collet (for use with 5/16 in tap shank to 3/8 in tap shank) |
| 263-7254 | C2TA | Tap Adapter (quick change for C2F tap and L6 taps) |
More Information
See www.locknstitch.com for repair procedures. www.locknstitch.com also has training material and catalogs.