Contents

Section 1 Introduction
- SAFETY SIGNALS
Section 2
Safety & Compliance
- FEDERAL MOTOR VEHICLE SAFETY STANDARDS COMPLIANCE
- DIMENSIONS
- ABBREVIATIONS
- TURNING RADIUS
Section 3
Dimensions
- OVERALL DIMENSIONS
- T680 Standard Hood Daycab
- T680 MX (SHORT) HOOD DAYCAB
- T880 Standard Hood Daycab
- T880 MX (SHORT) HOOD DAYCAB
- T880 Standard Hood with 52 sleeper
- T880 MX (SHORT) HOOD with 52 sleeper
- RIDE HEIGHTS
- REAR SUSPENSION LAYOUTS
- AG400L Tandem
- Note: Actual axle spacing can depart from nominal due to axle slant requirements. Final axle spacing can vary by more than an inch from nominal in some cases. If precise axle spacing is critical due to body installation or state/local regulatory requireme
- AG400 Tandem
- Note: Actual axle spacing can depart from nominal due to axle slant requirements. Final axle spacing can vary by more than an inch from nominal in some cases. If precise axle spacing is critical due to body installation or state/local regulatory requireme
- AG460 Tandem
- Note: Actual axle spacing can depart from nominal due to axle slant requirements. Final axle spacing can vary by more than an inch from nominal in some cases. If precise axle spacing is critical due to body installation or state/local regulatory requireme
- AG690 TRIdem
- Note: Actual axle spacing can depart from nominal due to axle slant requirements. Final axle spacing can vary by more than an inch from nominal in some cases. If precise axle spacing is critical due to body installation or state/local regulatory requireme
- Reyco 79KB Single Rear Axle
- Reyco 102 Tandem Rear Axle
- Neway ADz 123 Single Rear Axle
- Neway ADz 246 Tandem Suspension
- Neway ADz 369 Tridem Suspension
- Hendrickson Primaax ex Tandem Suspension
- Hendrickson Primaax EX Tridem Suspension
- Hendrickson HMX Tandem Suspension
- Hendrickson RT Tandem Suspension
- Chalmers 856-46 Tandem Suspension
- Lift AXLES (pushers and tags)
- Axle TRACK AND TIRE WIDTH
- PTO Clearances
- T680/880 Transmission PTO Application Guide
- Exhaust and After-treatment Information
Section 4
Exhaust & Aftertreatment
- General Guidelines for DEF System
- Measurement Reference Points
- General Exhaust Information
- FRAME LAYOUTS
Section 5
Frame Layouts
- Common Optional Components
- FRAME LAYOUT INDEX
- FRAME INFORMATION
Section 6
Body Mounting
- Critical Clearances
- Body Mounting Using Brackets
- Mounting Holes
- BODY MOUNTING USING UBOLTS
- FRAME MODIFICATIONS
- DRILLING RAILS
Section 7
Frame Modifications
- MODIFYING FRAME LENGTH
- Changing Wheelbase
- Crossmembers
- WELDING
- Torque Requirements
- ELECTRICAL
Section 8 Electrical
- Body Builder Connection Points
- Lift Axles (Pushers & Tag)
- ROUTING
Section 9
Routing
- ROUTING REQUIREMENTS
Appendix A Vehicle Identification
- vehicle identification labels
Figure 2-1. Incomplete Vehicle Certification Document
Figure 2-2. Locations of Certification Labels - Drivers Door and Frame
Figure 2-3: Aerodynamic Mirror OAT Sensor Location
Figure 2-4: Instrument Cluster for T680/T880 used with EPA 2013 Emission compliant engines. The Check Engine lamp and/or the MIL will appear in the Driver Performance Center (#8). See T680/T880 Operators Manual for more information.
Figure 3-1. Prospecter Turn Circle Analysis
Figure 3-2. Single Acting and Dual Acting PTOs
Figure 3-3. Single-Acting Eaton PTO
Figure 3-4. Double-Acting Eaton PTO
Figure 3-5. Allison Transmission-Mounted PTOs
Figure 3-6. Auto Susp Dump w/ Allison mtd PTO
Figure 3-7. EoA Reversible PTO Example
Figure 3-8. Air Actuated PTO (No Interlock)
Figure 3-9. Rear Axle Declutch Telltale
Figure 3-10. Split Shaft PTO Example #1
Figure 3-11. Pump Mode Example
Figure 3-12. Sample Chassis Node and EOA Manifold. (configured to match Figure 3-13)
Figure 3-13. Wiring Diagram for Chassis Node, Cab Switches, and EOA Manifold. (configured to match Figure 3-12)
Figure 4-1: Measurement Location of DEF Supply Module (Pump)
Figure 4-2: Measurement Location of DEF Dosing Module (Injector)
Figure 4-3: Orientation of Dosing Module
Figure 4-4: RH Under Cab Exhaust with Small, Medium, or Large Tanks.
Figure 4-5: Horizontal Exhaust with Small, Medium, or Large Tanks.
Figure 4-6: Vertical Exhaust with Small, Medium, or Large Tanks.
Figure 4-7: Routing DEF Lines
Figure 4-8: Supply Module Allowed Clocking Angles
Figure 4-9: Isometric view of Right Hand Under DPF/SCR with Single Side of Cab Tailpipe
Figure 4-10: Isometric view of Right Hand Under DPF/SCR with Single Side of Cab Tailpipe
Figure 4-11: Right view of Right Hand Under DPF/SCR with Single Side of Cab Tailpipe
Figure 4-12: Back view of Right Hand Under DPF/SCR with Single Side of Cab Tailpipe
Figure 4-13: Isometric view of Right Hand Under DPF/SCR with Dual Side of Cab Tailpipe
Figure 4-14: Isometric view of Right Hand Under DPF/SCR with Dual Side of Cab Tailpipe
Figure 4-15: Right View of Right Hand Under DPF/SCR with Dual Side of Cab Tailpipe
Figure 4-16: Back View of Right Hand Under DPF/SCR with Dual Side of Cab Tailpipe
Figure 4-17: Isometric View of Right Hand Under DPF/SCR with Single Back of Cab Tailpipe
Figure 4-18: Isometric View of Right Hand Under DPF/SCR with Single Back of Cab Tailpipe
Figure 4-19: Right View of Right Hand Under DPF/SCR with Single Back of Cab Tailpipe
Figure 4-20: Back View of Right Hand Under DPF/SCR with Single Back of Cab Tailpipe
Figure 4-21: Isometric View of Right Hand Under DPF/SCR with Ground-Dump Tailpipe
Figure 4-22: Isometric View of Right Hand Under DPF/SCR with Ground-Dump Tailpipe
Figure 4-23: Right View of Right Hand Under DPF/SCR with Ground-Dump Tailpipe
Figure 4-24: Back View of Right Hand Under DPF/SCR with Ground-Dump Tailpipe
Figure 4-25: Isometric View of Independent Back of Cab DPF/SCR with Back of Cab Tailpipe
Figure 4-26: Isometric View of Independent Back of Cab DPF/SCR with Back of Cab Tailpipe
Figure 4-27: Right View of Independent Back of Cab DPF/SCR with Back of Cab Tailpipe
Figure 4-28: Back View of Independent Back of Cab DPF/SCR with Back of Cab Tailpipe
Figure 4-29: Isometric View of Horizontal Crossover DPF/SCR with Ground-Dump Tailpipe
Figure 4-30: Isometric View of Horizontal Crossover DPF/SCR with Ground-Dump Tailpipe
Figure 4-31: Right View of Horizontal Crossover DPF/SCR with Ground-Dump Tailpipe
Figure 4-32: Back View of Horizontal Crossover DPF/SCR with Ground-Dump Tailpipe
Figure 4-33: Isometric View of Right Hand Under DPF/SCR with Single Side of Cab Tailpipe (52 Sleeper)
Figure 4-34: Isometric View of Right Hand Under DPF/SCR with Single Side of Cab Tailpipe (52 Sleeper)
Figure 4-35: Right View of Right Hand Under DPF/SCR with Single Side of Cab Tailpipe (52 Sleeper)
Figure 4-36: Rear View of Right Hand Under DPF/SCR with Single Side of Cab Tailpipe (52 Sleeper)
Figure 4-37: Isometric View of Right Hand Under DPF/SCR with Dual Side of Cab Tailpipe (52 Sleeper)
Figure 4-38: Isometric View of Right Hand Under DPF/SCR with Dual Side of Cab Tailpipe (52 Sleeper)
Figure 4-39: Right View of Right Hand Under DPF/SCR with Dual Side of Cab Tailpipe (52 Sleeper)
Figure 4-40: Rear View of Right Hand Under DPF/SCR with Dual Side of Cab Tailpipe (52 Sleeper)
Figure 4-41: Isometric View of Right Hand Under DPF/SCR with Single Back of Sleeper Tailpipe (52 Sleeper)
Figure 4-42: Isometric View of Right Hand Under DPF/SCR with Single Back of Sleeper Tailpipe (52 Sleeper)
Figure 4-43: Right View of Right Hand Under DPF/SCR with Single Back of Sleeper Tailpipe (52 Sleeper)
Figure 4-44: Rear View of Right Hand Under DPF/SCR with Single Back of Sleeper Tailpipe (52 Sleeper)
Figure 4-45: Isometric View of Right Hand Under DPF/SCR with Dual Back of Sleeper Tailpipes (52 Sleeper)
Figure 4-46: Isometric View of Right Hand Under DPF/SCR with Dual Back of Sleeper Tailpipes (52 Sleeper)
Figure 4-47: Right View of Right Hand Under DPF/SCR with Dual Back of Sleeper Tailpipes (52 Sleeper)
Figure 4-48: Rear View of Right Hand Under DPF/SCR with Dual Back of Sleeper Tailpipes (52 Sleeper)
Figure 4-49: Isometric View of Horizontal Crossover DPF/SCR with Single Back of Sleeper Tailpipe (52 Sleeper)
Figure 4-50: Isometric View of Horizontal Crossover DPF/SCR with Single Back of Sleeper Tailpipe (52 Sleeper)
Figure 4-51: Right View of Horizontal Crossover DPF/SCR with Single Back of Sleeper Tailpipe (52 Sleeper)
Figure 4-52: Rear View of Horizontal Crossover DPF/SCR with Single Back of Sleeper Tailpipe (52 Sleeper)
Figure 4-53: Isometric View of Horizontal Crossover DPF/SCR with Dual Back of Sleeper Tailpipes (52 Sleeper)
Figure 4-54: Isometric View of Horizontal Crossover DPF/SCR with Dual Back of Sleeper Tailpipes (52 Sleeper)
Figure 4-55: Right View of Horizontal Crossover DPF/SCR with Dual Back of Sleeper Tailpipes (52 Sleeper)
Figure 4-56: Rear View of Horizontal Crossover DPF/SCR with Dual Back of Sleeper Tailpipes (52 Sleeper)
EXHAUST INFORMATION
Figure 4-57.
Figure 4-58. Dimension A = Top of Rail Frame Height from Prospector Frame Depth.
Figure 5-1. DEF Tank Dimensions.
FIGURE 6-1. Minimum Clearance Between Top Of Rear Tires And Body Structure Overhang.
FIGURE 6-2. Minimum Back of Cab Clearance
FIGURE 6-3. Spacer Between Frame Sill and Body Rail - Rubber or Plastic
FIGURE 6-4. High Compression Spring FIGURE 6-5. Rubber Spacer Between Brackets Between the Mounting Bolt and Upper Bracket
FIGURE 6-6. Crossmember-Gusset Hole Pattern Requirements. [inch (mm)]
FIGURE 6-7. Acceptable U-Bolt Mounting with Wood and Fabricated Spacers [inch (mm)]
FIGURE 6-8. Clearance Space for Air Lines and Cables
FIGURE 6-9. Example of Fishplate Bracket at Rear End of Body, used with U-Bolts
FIGURE 7-1. Detail of Frame Extension and Joint Welding
FIGURE 7-2. Frame Insert
FIGURE 7-3. Comparison of Original, Shortened, and Extended Wheelbases.
FIGURE 7-4. Crossmember Added When Distance Exceeds 60 Inches (1524 mm)
Figure 8-1. NAMUX 4 System Diagram
Figure 8-2. 12 Pin Connector
Figure 8-3. Spare circuit connector detail
Figure 8-4. Spare circuit location under-dash (P096)
Figure 8-5. Spare circuit location on Power Distribution Center (Dash-Side, P001)
Figure 8-6. Spare circuit diagram (P001 and P096)
Figure 8-7. Electric Engaged Equipment Connector
Figure 8-8. Air Solenoid Bank and Chassis Node
Figure 8-9. Rear Axle Controls and Sensors Connector
Figure 8-10. B-CAN Connector
Figure 8-11. Chassis Harness From Cab Mount to Front of Frame
Figure 8-12. Chassis Harness From Cab Mount to BOC
Figure 8-13. Connectors Near Front Cab Mount
Figure 8-14. Connector Near BOC
Figure 8-15. VCAN Connectors
Figure 8-16. Firewall Connectors
Figure 8-17. Chassis Node and Electric Over Air Solenoid Bank
Figure 8-18. Installing Additional Switches onto the Chassis Side
Figure 8-19. Installing Additional Gauges on the Dash
Figure 8-20. Installing Sensors on the Chassis Side for Gauges
Figure 8-21. Typical Installation of Sensors Diagram
Figure 8-22. Spare Power Connector
Figure 8-23. Truck Lift Axles (Separate Switches)
Figure 8-20. Truck Lift Axles (Single Switch)
Figure 8-24. EoA Trailer Lift Axles
Figure 8-25. Mating Connector: Packard PN 12020786
Figure 8-26. Junction Box BOC or EOF
Figure 8-27. Dash Access
Figure 8-28. Engine Access
Figure 8-29. J1939 Access
Figure 8-30. J1939 Access
Figure 8-31. J1939 Access
Figure 8-32. Trim Panel Removal
Figure 8-33. Gauge Installation
Figure 8-34. Switch Installation
Figure 8-35. Cluster Removal
Figure 8-36. Telltale Installation
Figure 9-1. Clamp and Butterfly Clamp
Figure 9-2. Butterfly Tie
Figure 9-3. Tie Strap
Figure 9-4. Heavy Duty (HD) Mount.
Figure 9-5. Definition of measurements.
- Figure A-1. Vehicle Identification Number (VIN).
- Figure A-2. Drivers Door and Door Frame Labels
- Figure A-3. Front Axle Identification
- Figure A-4. Rear Axle Identification
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Kenworth T680 2015 Instruction Manual

Pages 192

Year 2015

Language(s)

of 192

Kenworth T680 2015 Truck Specification

The 2015 Kenworth T680 is a state-of-the-art heavy-duty truck engineered for optimal performance, efficiency, and driver comfort. At the heart of the T680 is the PACCAR MX-13 engine, which delivers up to 500 horsepower and 1,850 lb-ft of torque. This engine is known for its reliability and fuel efficiency, achieved through advanced design features such as a high-pressure common rail fuel injection system and a variable geometry turbocharger.

The T680 is equipped with the Eaton Fuller Advantage 10-speed automated manual transmission, enhancing fuel economy and reducing driver fatigue. The aerodynamic design of the T680 includes features like a sloped hood, wheel covers, and chassis fairings that significantly reduce drag, contributing to its exceptional fuel efficiency. The truck's cab is built with lightweight, high-strength aluminum, balancing durability with weight savings.

Inside, the T680 offers a spacious and ergonomically designed driver's environment. The cab features a fully adjustable air-ride seat, a wrap-around dash for easy access to controls, and an advanced Driver Performance Center with a full-color display providing real-time data on fuel consumption, trip information, and vehicle diagnostics. The sleeper cab option includes amenities such as a premium mattress, ample storage, and optional climate control systems to ensure driver comfort during long hauls.

The Kenworth T680 also incorporates advanced safety and connectivity technologies. It features the Bendix Wingman Advanced collision mitigation system, lane departure warning, and adaptive cruise control. For enhanced connectivity, the truck is equipped with Kenworth NavPlus, an in-dash system providing navigation, communication, and entertainment functions.

Overall, the 2015 Kenworth T680 represents a blend of power, efficiency, and modern driver-centric design, making it a top choice for fleet operators and long-haul drivers seeking a reliable and comfortable vehicle.

Kenworth T680 2015 Truck F.A.Q.

What is the recommended tire pressure for a Kenworth T680 2015?

The recommended tire pressure for a Kenworth T680 2015 is typically 100 PSI for the front tires and 110 PSI for the rear tires. However, it's essential to check the manufacturer's specifications or the tire placard for exact requirements.

How do I reset the maintenance light on a Kenworth T680 2015?

To reset the maintenance light on a Kenworth T680 2015, turn the ignition to the 'on' position without starting the engine. Press and hold the trip button until the maintenance light begins to flash, then release it. Turn off the ignition and restart the engine to ensure the light is reset.

What type of oil is recommended for the Kenworth T680 2015?

The Kenworth T680 2015 typically requires a high-quality 15W-40 diesel engine oil that meets API CJ-4 specifications. It's advisable to consult the owner's manual for the specific brand and type recommendations.

How can I troubleshoot an issue with the air conditioning system on a Kenworth T680 2015?

If the air conditioning system is not working, check the refrigerant level, inspect the compressor and belts for damage, and ensure the cabin filters are clean. If the issue persists, consult a professional mechanic for a comprehensive diagnostic.

What is the procedure for changing the fuel filter on a Kenworth T680 2015?

To change the fuel filter on a Kenworth T680 2015, locate the filter housing, remove the old filter using a filter wrench, install the new filter ensuring it is properly seated, and bleed the system to remove air before restarting the engine.

How do I perform a DPF regeneration on a Kenworth T680 2015?

To perform a DPF regeneration on a Kenworth T680 2015, ensure the truck is parked safely, engine is at operating temperature, and follow the prompts on the dashboard to start the regen process. It may take up to an hour to complete.

What are common electrical problems in a Kenworth T680 2015 and how can they be fixed?

Common electrical issues include faulty wiring, blown fuses, and battery problems. Regularly inspect and clean battery terminals, check fuses, and look for damaged wires. If problems persist, consider professional diagnostic services.

How often should I service the transmission on a Kenworth T680 2015?

The transmission on a Kenworth T680 2015 should typically be serviced every 150,000 miles or as recommended by the manufacturer. Regular checks of the transmission fluid level and condition can help ensure optimal performance.

What is the towing capacity of a Kenworth T680 2015?

The towing capacity of a Kenworth T680 2015 depends on its configuration, but it is generally designed to handle up to 80,000 pounds gross combined weight. Always consult the vehicle specification sheet for exact capacities.

How can I improve fuel efficiency on my Kenworth T680 2015?

Improving fuel efficiency can be achieved by maintaining proper tire pressure, ensuring regular engine maintenance, reducing idle time, and driving at optimal speeds. Consider using aerodynamic accessories to reduce drag.