- Off Highway Truck
- 773E (S/N: ASK1-UP)
Introduction
The following special instruction contains the rework procedure to install a grease adapter guard on 773E Off-Highway Trucks.
Reference: Special Instruction, REHS1841, "General Welding Procedures"
Do not perform any of the procedures until you have read the information in this Special Instruction. Understand and perform all the safety instructions and information. Safety instructions and information are associated with the removal, handling, repair, and installation of the implements and components in the front linkage.
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Protect yourself and others; read and understand this warning. Fumes and gases can be dangerous to your health. Ultraviolet rays from the weld arc can injure eyes and burn skin. Electric shock can kill. Read and understand the manufacturer's instruction and your employer's safety practices. Keep your head out of the fumes. Use ventilation, exhaust at the arc, or both, to keep fumes and gases from your breathing zone and the general area. Wear correct eye, ear and body protection. Do not touch live electric parts. Refer to the American National Standard Z49.1, "Safety in Welding and Cutting" published by the American Welding Society, 2501 N.W. 7th Street, Miami, Florida 33125: OSHA Safety and Health Standards, 29 CFR 1910, available from U.S. Dept. of Labor, Washington D.C. 20210. |
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Do not attempt to assemble this machine until you read and you understand the assembly instructions. Improper assembly procedures could result in injury or death. |
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Personal injury can result from flame cutting or welding on painted areas. The effect of gasses from burned paint is a hazard to the person doing the cutting or welding. Do not flame cut or weld on painted areas. |
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Personal injury or death can result from fumes, gases, and ultraviolet rays from the weld arc. Welding can cause fumes, burn skin, and produce ultraviolet rays. Keep your head out of the fumes. Use ventilation, exhaust at the arc, or both to keep fumes and gases from your breathing area. Wear eye, ear, and body protection before working. Protect yourself and others by reading and understanding this warning. Fumes and gases can be dangerous to your health. Ultraviolet rays from the weld arc can injure eyes and burn skin. Electric shock can cause death. Read and understand the instructions of the manufacturer and the safety practices of your employer. Do not touch live electrical parts. See “American National Standard Z49.1, Safety in Welding and Cutting” which is published by the American Welding Society. American Welding Society8669 NW 36 Street #130 Miami, Florida 33166-6672 1-800-443-9353 See “OSHA Safety and Health Standards, 29 CFR 1910” which is available from the U.S. Department of Labor. U.S. Department of LaborWashington, D.C. 20210 See applicable requirements for your local area. |
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Personal injury can result from the sudden release of high pressure oil. Be sure the engine has been shut off for a minimum of five minutes to be sure that the accumulator pressure is zero. The accumulator is filled with dry nitrogen. Do not loosen or remove the valve or cap from the top of the accumulator. A purge screw at the bottom of the accumulator can be used to release the pressure that is left in the system. |
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Personal injury or death can result from improper lifting or blocking. When a hoist or jack is used to lift any part or component, stand clear of the area. Be sure the hoist or jack has the correct capacity to lift a component. Install blocks or stands before performance of any work under a heavy component. Approximate weights of the components are shown. Clean all surfaces where parts are to be installed. |
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Accidental engine starting can cause injury or death to personnel working on the equipment. To avoid accidental engine starting, disconnect the battery cable from the negative (−) battery terminal. Completely tape all metal surfaces of the disconnected battery cable end in order to prevent contact with other metal surfaces which could activate the engine electrical system. Turn the battery disconnect switch to the OFF position and lockout the battery disconnect switch with a safety lock. Place a Special Instruction, SEHS7332, "Do Not Operate" tag at the start switch and battery disconnect location to inform personnel that the machine is being worked on. |
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Before carrying out arc welding on the machine or on any equipment attached to the machine, disconnect all power and ground leads from the batteries to avoid possible damage to electronic components. |
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Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products. Dispose of all fluids according to local regulations and mandates. |
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Do Not use electrical components (ECM or sensors) or electronic component grounding points for grounding the welder. |
Required Parts
| Required Parts to Install the Grease Adapter Guard | ||
| Qty | Part Number | Description |
| 4 | Boss | |
| 4 | Hard Washer | |
| 4 | Bolt | |
| 2 | Plate assembly | |
Important Safety Information
The following information is an explanation of various labels that are found in this document.
Warnings
The warning label informs the technician that an injury or death can occur as a result of a condition that may exist.
Notices
A notice informs the technician that component damage can occur as a result of a condition that exists.
Notes
A note contains general information for the technician about the operation that is being performed.
Proper repair is important to the safe operation and the reliable operation of this machine. This document outlines basic recommended procedures. Some of the procedures require special tools, devices, or work methods.
Before you perform any repairs or before you perform any maintenance, read all safety information. Understand all safety information before you perform any repairs or before you perform any maintenance.
Safety information is provided in this document and on the machine. If these hazard warnings are not heeded, bodily injury or death could occur to you or other persons.
The “Safety Alert Symbol” that is followed by a “Signal Word” identifies a hazard. “DANGER”, “WARNING”, and “CAUTION” are “Signal Words”.
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| Illustration 1 | g00008666 |
The signal word “WARNING” has the following meanings:
- Pay Attention !
- Become Alert !
- Your Safety Is Involved !
The message that appears under the safety alert symbol explains the hazard.
Operations or conditions that may cause product damage are identified by "NOTICE" labels on the machine and in the service information.
The person that services the machine may be unfamiliar with many of the systems on the machine. Use caution when you perform service work. Special knowledge of the systems and of the components is important. Before you remove or disassemble any component, obtain knowledge of the system and knowledge of the component.
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. Determine that the operation, lubrication, maintenance, and repair procedures will not make the machine unsafe.
Basic Precautions
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Improper operation, lubrication, maintenance or repair of this product can be dangerous and could result in injury or death. Do not operate or perform any lubrication, maintenance or repair on this product, until you have read and understood the operation, lubrication, maintenance and repair information. |
Note: Be aware of the surrounding when you weld. Always check for any pertinent hazards. Check for fuel lines, batteries, pressurized vessels, pressurized lines, oils, or other issues.
Always observe the list of basic precautions that follows:
Safety Signs
Safety signs include the items that follow: signs, information plates, and decals. Read all “Safety” signs on the machine before operating, lubricating, or repairing the machine. Understand all “Safety” signs on the machine before operating, lubricating, or repairing the machine. Replace any safety signs that are in the conditions that follow: damage, unreadable and missing.
Protective Equipment
When you work around the machine, always wear protective equipment that is required by the job conditions. Protective equipment includes the items that follow: hard hat, protective glasses, and protective shoes. In particular, wear protective glasses when you use a hammer or when you use a sledge hammer. When you weld, use the appropriate protective equipment that is required by the job conditions. Protective equipment for welding includes the items that follow: gloves, welding hood, goggles, and apron. Do not wear loose clothing or jewelry that can catch on parts of the machine.
Mounting and Dismounting
Use steps and handholds when you mount a machine. Also, use steps and handholds when you dismount a machine. Before you mount the machine, clean any mud or debris from steps, walkways, or work platforms. Always face the machine when you use steps, handholds, and walkways. When you cannot use the accesses on the machine, use ladders, scaffolds, or work platforms to perform safe repair operations.
Procedures for Lifting
To avoid back injury, use a hoist when you lift heavy components. Make sure that all chains, hooks, and slings are in good condition. Ensure that all chains, hooks, and slings are of the correct capacity. Be sure that the hooks are positioned correctly. Ensure that the hooks are equipped with a safety latch. Do not place a side load on the lifting eyes during a lifting operation.
Hot Fluids and Parts
To avoid burns, be alert for hot parts on machines which have been stopped and hot fluids in lines, tubes and compartments.
Be careful when you remove filler caps, breathers, and plugs on the machine. Hold a rag over the cap or plug to prevent being sprayed by pressurized liquids. When the machine has been stopped, the danger of hot fluids is greater.
Corrosion Inhibitor
Corrosion inhibitor contains alkali. Avoid contact with the eyes. Do not allow corrosion inhibitor to contact the skin for extended periods of time. Avoid repeated contact with the skin. Do not drink corrosion inhibitor. In case of contact, immediately wash skin with soap and water. For contact with the eyes, flush the eyes with large amounts of water for at least 15 minutes. Seek medical attention.
Preparation for Welding
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Protect yourself and others; read and understand this warning. Fumes and gases can be dangerous to your health. Ultraviolet rays from the weld arc can injure eyes and burn skin. Electric shock can kill. Read and understand the manufacturer's instruction and your employer's safety practices. Keep your head out of the fumes. Use ventilation, exhaust at the arc, or both, to keep fumes and gases from your breathing zone and the general area. Wear correct eye, ear and body protection. Do not touch live electric parts. Refer to the American National Standard Z49.1, "Safety in Welding and Cutting" published by the American Welding Society, 2501 N.W. 7th Street, Miami, Florida 33125: OSHA Safety and Health Standards, 29 CFR 1910, available from U.S. Dept. of Labor, Washington D.C. 20210. |
Read the instructions from the supplier and understand the instructions from the supplier. Provide fresh air circulation to the welding helmet to avoid any illnesses that can be caused by long-term exposure to the welding fumes. The fresh air circulation will also remove any exhaled carbon dioxide that may be trapped in the welding helmet. Use proper eye protection, ear protection, and body protection while you are preparing the surfaces and while you are welding on the surfaces. Use a welding helmet with a filter plate that is at least Shade-11.
Batteries
Note: When you weld near the batteries, remove the batteries.
Do not smoke when an inspection of the battery electrolyte level is made. Never disconnect any charging unit circuit or battery circuit cable from the battery when the charging unit is operating. A spark can cause an explosion from the flammable vapor mixture of hydrogen and oxygen that is released from the electrolyte through the battery outlets. Do not allow battery electrolyte to contact the skin or with the eyes. Battery electrolyte is an acid. In case of contact with battery electrolyte, immediately wash the skin with soap and water. For contact with the eyes, flush the eyes with large amounts of water for at least 15 minutes. Seek medical attention.
Pressurized Items
- Always use a board or a piece of cardboard when you check for a leak. Leaking fluid under pressure can penetrate body tissue. Fluid penetration can cause serious injury and possible death. A pin hole leak can cause severe injury. If fluid is injected into your skin, you must get treatment immediately. Seek treatment from a doctor that is familiar with this type of injury.
- Relieve all pressure in air, oil, or water systems before any lines, fittings, or related items are disconnected or removed. Always make sure that all raised components are blocked correctly. Be alert for possible pressure when you disconnect any device from a system that utilizes pressure.
- Fuel lines that are damaged and fuel lines that are loose can cause fires. Lubrication lines that are damaged and lubrication lines that are loose can cause fires. Hydraulic lines, tubes, and hoses that are damaged can cause fires. Loose hydraulic lines, tubes, and hoses can cause fires. Do not bend or strike high-pressure lines. Do not install lines which have been bent or damaged. Check lines, tubes, and hoses carefully. Do not use your bare hand to check for leaks. If fluids are injected into your skin, you must get treatment immediately. Seek treatment from a doctor that is familiar with this type of injury.
- Pressure air or water can cause personal injury. When pressure air or water is used for cleaning, wear a protective face shield, protective clothing, and protective shoes. The maximum air pressure for cleaning purposes must be below
205 kPa (30 psi) . When you use a pressure washer, keep in mind that the nozzle pressures are high. The nozzle pressures are frequently above13790 kPa (2000 psi) . Follow all the recommended practices that are provided by the manufacturer of the pressure washer.
Welding Specifications and Qualifications
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Protect yourself and others; read and understand this warning. Fumes and gases can be dangerous to your health. Ultraviolet rays from the weld arc can injure eyes and burn skin. Electric shock can kill. Read and understand the manufacturer's instruction and your employer's safety practices. Keep your head out of the fumes. Use ventilation, exhaust at the arc, or both, to keep fumes and gases from your breathing zone and the general area. Wear correct eye, ear and body protection. Do not touch live electric parts. Refer to the American National Standard Z49.1, "Safety in Welding and Cutting" published by the American Welding Society, 2501 N.W. 7th Street, Miami, Florida 33125: OSHA Safety and Health Standards, 29 CFR 1910, available from U.S. Dept. of Labor, Washington D.C. 20210. |
Note: Personal breathing protection should be worn by the personnel that are welding. Personal breathing protection will prevent fumes from entering the lungs of the person that is welding. Use a 237-5181 Respirator for breathing protection.
Qualifications
Welders must be qualified for the appropriate type of weld that is being performed. Welders must be qualified for the appropriate position of weld that is being performed. Welders must be qualified for the welding process that is being utilized: Shielded Metal Arc Welding (SMAW), Flux Cored Arc Welding (FCAW) and Gas Metal Arc Welding (GMAW). Refer to the appropriate National Welding Code AWS D1.1 or the International Welding Code for specific requirements. The welders must have used the process at some time within the last 6 months. The welders must complete the process of certification if the welders have not used the welding processes for 6 months.
Proper Welding Procedure on Machines and Engines with Electronic Controls
Proper precautions are necessary to prevent damage to electronic controls. When you weld on a machine with electronic controls, use the steps that follow:
- Turn off the engine. Put the key start switch in the OFF position.
- If the machine has a battery disconnect switch, open the switch. If the machine does not have a battery disconnect switch, disconnect the negative battery cable at the battery.
- Connect the ground cable for the welder directly to the actual machine component that will be welded. Attach the clamp for the ground cable as close as possible to the area that is being welded. This location will reduce the chance of damage from welding current to the components that follow: bearings, hydraulic components, and electrical components.
Note: Do NOT use electrical components as a ground point for the welder. Do NOT use ground points for electronic components as a ground point for the welder.
- Protect the wiring harnesses from the welding spatter.
Prepare the Area
The area that will be welded must be clean, dry, and free of the following contaminants:
- Oil
- Grease
- Paint
- Dirt
- Rust
- Any fluid or moisture
All welding shall be conducted on base material that is heated and maintained at a minimum temperature of
Note: Heating instructions (preheat, interpass, and postheat) for any specific repair shall override the minimum
Note: Heat distortion of the base metal is possible when you weld. Avoid excessive heating of the base metal.
Attach the welding ground cable directly to the base metal. Protect machined surfaces from sparks. Protect the machined surfaces from the welding spatter.
Welding Electrodes and Parameters
Low Hydrogen Electrodes for the SMAW Process
Low hydrogen electrodes that meet the following requirements are recommended for all weld repairs, unless otherwise specified.
| Mechanical Properties of Welds from Low Hydrogen Electrodes That Are Classified as "ANSI/AWS A5.1 E7018" | |
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| Tensile Strength | |
| Yield Strength | |
| Elongation | 22% |
Low hydrogen electrodes must be stored in an electrode oven at
The following table shows the settings for the welding current, based on the electrode diameter.
| Welding Current for Low Hydrogen Electrodes | ||
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| Diameter | Length | Amperage Rating |
| 3.2 mm (1/8 inch) | |
70-40 |
| 4.0 mm (5/32 inch) | |
110-180 |
Use a polarity setting of DC reverse polarity. Remove the slag after each pass of the welding electrode. The width of the weld should not exceed two times the electrode diameter.
- Use dry electrodes only.
- All electrodes must be dried. The electrode should be baked/dried at the temperature range per the manufacture recommendations or can be dried by heating the electrodes to
300° C (572° F) . The electrodes must be baked/dried for 30 minutes. - Remove the electrodes from the oven one electrode at a time, electrodes are sufficient for 10 minutes of welding only.
- Adopt back step method or strike the arc on a small steel plate prepared for striking, because arc striking on base metal may initiate cracking.
- Use stringer bead and short arc.
- Remove slag after every pass using wire brush.
Note: For more information regarding stick welding SMAW, refer to Reuse And Salvage Guidelines, SEBD0512, "Caterpillar Service Welding Guide"
Weld Inspection and Acceptance Criteria
The weld should not have any of the conditions that follow in Table 4.
| Defect Name | ISO 6520 Defect Reference Number | Remarks | Defect Limit |
| Cracks - Longitudinal, Transverse, Radiating, Crater, Disconnected, Branching | 1011, 1012, 1013, 1014, 1023, 1024, 1031, 1033, 1034, 1045, 1046, 1047, 1051, 1053, 1054, 1061, 1063, 1064 | -- | Not Permitted |
| Crack - Transverse | 1021 | Hard Surfacing Welds Only | Permitted |
| Crack - Transverse | 1021 | Joining Welds | Not Permitted |
| Porosity | 2011, 2012, 2014, 2017 | Maximum Diameter for a Single Pore | |
| Maximum Pores in Any |
6 | ||
| Maximum Number of Pores in Any |
1 | ||
| Clustered Porosity | 2013 | Maximum Length of Cluster in Any Weld | |
| Elongated Cavities | 2015 | Maximum Height or Width | |
| Maximum Length for Any Single Discontinuity | |
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| Maximum Length in Any Weld | 10% of Weld Length | ||
| Elongated Cavities | 2016 | Maximum Dimension of Any Single Cavity | |
| Maximum Total Length of Affected Area in Any Weld | 10% of Weld Length Not to Exceed |
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| Shrinkage Cavities | 2021, 2024, 2025 | Maximum Diameter or Length | |
| Slag or Flux Inclusions | 3011, 3012, 3014, 3021, 3022, 3024 | Maximum Height or Width | |
| Maximum Length for Any Single Discontinuity | |
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| Maximum Length in Any Weld | 10% of Weld Length | ||
| Oxide Inclusions | 3031, 3032, 3033 | Maximum Height or Width | |
| Maximum Length for Any Single Discontinuity | |
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| Maximum Length in Any Weld | 10% of Weld Length | ||
| Puckering (Oxide Inclusion - Aluminum) | 3034 | -- | Not Permitted |
| Metallic Inclusion | 3041, 3042, 3043 | -- | Not Permitted |
| Lack of Fusion | 4011, 4012, 4013 | Visual (Breaking the Surface) | Not Permitted |
| Subsurface Maximum Height or Width | |
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| Subsurface Maximum Length for Any Single Discontinuity | |
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| Maximum Length in Any Weld | 10% of Weld Length | ||
| Lack of Penetration | 402, 4021 | Maximum Reduced Penetration | 10% of Nominal Penetration Not to Exceed |
| Maximum Allowed Total Length of Reduced Penetration | 10% of Weld Length | ||
| Undercut | 5011, 5012, 5013, 5014, 5015 | Maximum Depth Measured From Plate Surface - Any Length | |
| Excess Weld Metal - Groove Weld Reinforcement (Convexity) | 502 | Any Length | -- |
| Weld Face Width |
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| Weld Face Width Over |
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| Weld Face Width Over |
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| Weld Face Width Over |
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| Weld Face Width |
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| Excess Weld Metal - Fillet Weld Convexity | 503 | Convexity Affects Weld Toe Angle, Reducing Fatigue Life | 90 Degrees |
| Weld Toe Angles of 135 Degrees and More Are Better | -- | ||
| Defect Limits Expressed as Minimum Toe Angles Allowed | -- | ||
| Excess Penetration | 5041, 5042, 5043 | Without Drawing Limitation | |
| With "Melt - Thru" and "Flush" Weld Symbols | |
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| With "Melt - Thru" and "Grind Flush" Symbols | Not Permitted (After Grinding) | ||
| Incorrect Weld Toe | 505 | When 1E2995 Applies (Expressed as a Toe Radius Rather Than a Toe Angle) | |
| Overlap | 5061, 5062 | Expressed as Minimum Toe Angle | 90 Degrees |
| Fillet Weld Leg Size - Undersize | -- | Applies to Either Weld Leg Measured Independent of the Other | -- |
| Maximum Undersize | |
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| Maximum Length of Undersize Weld | 10% of Total Weld Length If At Least 10% of Total Weld Length is at Least |
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| Fillet Weld Leg Size - Oversize | -- | Applies to Either Weld Leg Measured Independent of the Other | -- |
| Maximum Oversize | +25% (max |
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| Conformance to Design - Fillet Weld Leg Sizes May be Oversized (Within Defect Limitations or Beyond) Without Correction Provided the Excess Does not Interfere with Satisfactory End Use of the Component (i.e., Distortion, Fit-Up Interference, etc.) | -- | ||
| Fillet Weld - Linear Length when specified at less than the length of the joint | -- | Weld Size ≤ |
± |
| Weld Size ≥ |
± |
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| Fillet Weld Throat Size - Undersize | 5213 | Nominal Size (0.7 x Leg Size) Not Inclusive of Penetration Beyond the Weld Root | Not Permitted |
| Weld Crater Only - Maximum Undersize | |
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| Inadequately Filled Groove Weld | 511 | Careful Consideration Needs to be Given When Plate Mismatch is Apparent. | Not Permitted |
| Weld Depth Must be Maintained as a Minimum. | -- | ||
| Root Concavity on Open Root Groove Welds | 515, 5013 | Maximum Depth measured From Plate Surface or Tube Inner Surface - Any Length | |
| Poor Restart (Tie - In) | 5171, 5172 | Measured in Terms of Excess Weld Metal (Fillet Weld Convexity) or Overlap on Groove Welds, Lack of Fusion, or Insufficient Throat | -- |
| Excess Weld Metal on Fillet Welds, Defect Limits Expressed as Minimum Toe Angles Allowed | 90 Degrees | ||
| Overlap on Groove Welds, Defect Limits Expressed as Minimum Toe Angles Allowed | 90 Degrees | ||
| Lack of Fusion - Visual Maximum Length Per Restart | |
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| Insufficient Weld Throat | Not Permitted | ||
| Stray Arc Strike | 601 | -- | Not Permitted |
| Slag Residue | 615 | SMAW, SAW, FCAW, GMAW | Not Permitted |
| GTAW | Silicon Residue Permitted Unless Removal Specified by Drawing Note | ||
| Combined Discontinuities | -- | Total Maximum Combined Length of All Imperfections in a Weld, Expressed as a Percent of Total Weld Length | 15% |
| (No Single Type of Imperfection Can Exceed the Limits for That Single Type of Imperfection) | -- |
Machine Preparation
- Move the machine to a hard level surface.
- Avoid sudden steering inputs when you are parking the machine.
- Apply the service brakes to stop the machine.
- Move the transmission control lever to the NEUTRAL position.
- Move the parking brake switch reward to the ON position to engage the parking brake.
- If the body is fully lowered, place the hoist control lever in the FLOAT position for at least 10 seconds.
- If the body is in the raised position, ensure that all the body pins have been installed correctly, or that the retaining cable has been installed correctly. Refer to Operation and Maintenance Manual, "Body Retaining Pins - Installation", or Operation and Maintenance Manual, "Cable (Truck Body Retaining) - Installation" for instructions on securing the truck body. Place the hoist control lever in the FLOAT position for at least 10 seconds.
- Turn the engine start switch to the OFF position to stop the engine.
- Turn the battery disconnect switch to the OFF position.
- Disconnect the battery. Refer to Special Instruction, SEHS7633, "Battery Test Procedure" for additional information on the battery.
- Chock the front wheels and the rear wheels. Refer to Disassembly and Assembly, RENR8432, "Wheel Chock (Front and Rear) - Remove and Install".
Required Parts
| Required Parts to Install the Grease Adapter Guard | |||
| Item | Qty | Part Number | Description |
| 1 | 4 | Boss | |
| 2 | 4 | Hard Washer | |
| 3 | 4 | Bolt | |
| 4 | 2 | Plate assembly | |
Rework Procedure
- Remove any loose scale and dirt. Remove oil and coatings using solvents, or grinding.
- Clean the area to inspect to remove remaining dirt and allow the area to dry.
- Protect all machine surfaces from sparks or splatter produced from welding, chipping, and/or grinding.
Show/hide table
Illustration 2 g03863501 View of the rear axle housing
(AA)55 ± 2 mm (2.17 ± 0.08 inch)
(BB)192 ± 2 mm (7.56 ± 0.08 inch)
(CC)55 ± 2 mm (2.17 ± 0.08 inch)
(DD)192 ± 2 mm (7.56 ± 0.08 inch) Show/hide table
Illustration 3 g03863714 View of the rear axle housing
(EE)110 ± 2 mm (4.33 ± 0.08 inch) 4X
(1) Boss - Use the dimensions and weld specification in Illustration 2 and Illustration 3 to install four bosses (1).
Note: Maintain smooth radius weld.
- Clean and inspect the weld using dye penetrant after completion of welding. The weld shall be free from cracks, porosity, undercut, and incomplete fusion.
Show/hide table
Illustration 4 g03863795 View of the rear suspension cylinder and rear axle housing
(1) Boss
(2) Hard washer
(3) Bolt
(4) Plate assembly - Install plate assembly (4) onto bosses (1) and secure using two hard washers (2) and two bolts (3).
