Paccar 12-Speed Operator'S Manual Download Page 28 | Manualshive

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Chapter 3 | MAINTENANCE

In this Chapter:

What is a Maintenance Program?.......................................................................................................27
What is the Air System?......................................................................................................................29
Air Dryer Maintenance........................................................................................................................ 32
Proper Transmission Lubrication.........................................................................................................32
Vehicle Towing.................................................................................................................................... 33
How to Drain Fluid...............................................................................................................................33
How to Fill Fluid...................................................................................................................................34
Troubleshooting...................................................................................................................................34

MAINTENANCE -

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Y53-1272-1B1 (08/17)

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Summary of Contents for 12-Speed

Page 1: ...Operator s Manual Operator s Manual 12 Speed ...

Page 2: ......

Page 3: ...Safety 1 Driving 2 Maintenance 3 Information 4 Contents ...

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Page 5: ... on this vehicle Please disregard any illustrations or descriptions relating to features or equipment which are not on this vehicle PACCAR reserves the right to discontinue change specifications or change the design of its vehicles at any time without notice and without incurring any obligation The information contained in this manual is proprietary to PACCAR Reproduction in whole or in part by an...

Page 6: ...Chapter 1 SAFETY In this Chapter Using this Manual 5 Safety Alerts 5 Illustrations 6 General Safety Instructions 7 Warnings and Cautions 9 A Special Word About Repairs 9 SAFETY 4 Y53 1272 1B1 08 17 1 ...

Page 7: ...are several tools built into this manual to help you find what you need quickly and easily First is the Quick Table of Contents Located at the front of the manual this lists the main subjects covered and gives section numbers where you can find these subjects Use the Quick Table of Contents to find information on a large subject like Maintenance Cross referenced citations also help you get the inf...

Page 8: ...uence of not avoiding the hazard CAUTION Continuing to operate your vehicle with insufficient oil pressure will cause seri ous engine damage Failure to comply may result in equipment or property damage Notes The message following this symbol and signal word provides important information that is not safety related but should be followed The alert will highlight things that may not be obvious and i...

Page 9: ... according to the Driver s Check List Use the proper tool for manually rotating the engine DO NOT attempt to rotate the crankshaft by pulling or prying on the fan This practice can cause death personal injury equipment damage or damage to the fan blades causing premature fan failure Work areas should be dry well lit well ventilated free from clutter loose tools parts ignition sources and hazardous...

Page 10: ...kali DO NOT get the substance in eyes and avoid prolonged or repeated contact with skin DO NOT swallow If ingested seek immediate medical attention DO NOT induce vomiting In case of contact immediately wash skin with soap and water In case of harmful contact immediately contact a physician Always keep any chemicals OUT OF REACH OF CHILDREN Naptha and Methyl Ethyl Ketone MEK are flammable materials...

Page 11: ...e Filter DPF contains vanadium pentoxide which has been determined by the State of California to cause cancer Always wear protective clothing and eye protection when handling the catalyst assembly Dispose of the catalyst in accordance with local regulations If catalyst material gets into the eyes immediately flood eyes with water for a minimum of 15 minutes Avoid prolonged contact with skin In cas...

Page 12: ...here Your vehicle is a complex machine Anyone attempting repairs on it needs good mechanical training and the proper tools If you are sure you have these requirements then you can probably perform some repairs yourself However all warranty repairs must be performed by an authorized service facility If you aren t an experienced mechanic or don t have the right equipment please leave all repairs to ...

Page 13: ...SAFETY A Special Word About Repairs Y53 1272 1B1 08 17 11 1 ...

Page 14: ...al Reverse Selector 13 Up or Down Shifting 15 Engine Brake Operation for a Vehicle with Automated Transmission 17 Using the Manual Automatic Button 18 Start Up and Power Down 19 Transmission Power Take Off PTO 20 Snow Ice Operation 21 Trailer Operation 21 Features 21 DRIVING 12 Y53 1272 1B1 08 17 2 ...

Page 15: ... R Function 2 Up and Down Shift and Low Mode 3 Engine Brake and Max Mode 4 Manual M Automatic A Mode Button Related concepts Related tasks Drive Neutral Reverse Selector Transmission mode is selected by rotating the lever s outer knob There is a detent for Drive Neutral Reverse The instrument cluster will display the corresponding mode For Kenworth Vehicles For Peterbilt Vehicles DRIVING Controls ...

Page 16: ...the default Reverse gear is engaged Drive Mode Auto Mode Intelligent Start Gear Selection will automatically select the start gear depending on inputs such as load grade and axle transmission ratio This start gear can be changed by using the up downshift request procedure as long as the selection still falls into a gear that would allow the vehicle to launch without causing damage to the transmiss...

Page 17: ...will sound a tone Up or Down Shifting When in the Manual mode the transmission gears can be manually selected by pushing or pulling on the lever Pushing the lever forward will down shift Pushing and holding the lever forward will engage the LOW gear range Pulling the lever towards the driver will upshift the transmission Some vehicles may have a feature that prompts the operator to shift for optim...

Page 18: ...pt for the Transmission Override conditions noted on the previous page The transmission system will downshift at the earliest opportunity to enable higher than normal engine RPM to provide maximum engine braking WARNING On slippery surfaces minimize engine braking in LOW mode Excessive en gine braking at higher engine RPM could cause a loss of traction and vehi cle control NOTE The PACCAR Automate...

Page 19: ...utomated Transmission Moving the lever clockwise will engage the engine brake Increase the amount of engine brake by moving the lever further clockwise Each position has a corresponding level of engine brake Position Amount of Engine Brake Off 0 1 33 2 66 3 100 Position Amount of Engine Brake 4 100 AND will engage transmission low gear This position is momentary and will revert back to position 3 ...

Page 20: ...em automatically Driver manually selects the start gear and uses the up downshift request to shift NOTE Multiple gear upshifts and downshifts may be allowed when the up downshift request procedure is performed multi ple times Each request equals one gear change request If the driver attempts to select a non neutral mode without depressing the service brakes the transmission will not shift into gea...

Page 21: ...he engine 2 Turn the ignition key to ON and allow the PACCAR Automated Transmission to power up NOTE Engine cranking is delayed until the transmission power up is complete and the gear display shows a solid N If Neutral N is not shown in the gear display ensure that the vehicle air sys tem is at normal operating range be fore attempting to start the vehicle 3 Start the engine 4 Allow vehicle air s...

Page 22: ... Transmission Power Take Off PTO The transmission may have a PTO installed Engaging the PTO differs if it is operating in either a mobile or a stationary application Stationary PTO Operation The transmission countershaft PTO is used in this application To engage the PTO for stationary operation perform the following steps 1 Bring the vehicle to a complete stop and apply the parking brake WARNING A...

Page 23: ...rive mode Trailer Operation Trailer Connecting Prior to backing under the trailer ensure proper trailer height Use Low mode 1st gear for forward direction and Reverse R1 for reverse direction Sliding Trailer Axle Ensure axle rails and locks are properly maintained Follow proper procedure for unlocking and sliding the trailer axles Use Low mode 1st gear for forward direction and Reverse R1 for reve...

Page 24: ...elect the lowest possible start gear for the application If moving slowly is required select 1st or R1 DO use the Service Brakes and let Hill Start Aid assist you when launching on an incline Do NOT use the accelerator pedal to hold the vehicle on an incline Use Service Brakes Do NOT use the accelerator pedal to stop roll back on an incline after Hill Start Aid disengages Use Service Brakes and th...

Page 25: ...sion system will adapt to the conditions of the vehicle to change the shift points based on the followings inputs Vehicle grade Engine RPM Accelerator pedal position Vehicle load After changing loads or powering up the transmission system needs to relearn these inputs for the first few shifts to make the proper adjustments Coast Mode When coasting to a stop in Drive mode on level terrain the trans...

Page 26: ...the vehicle to automatically start moving when the transmission is in gear and the driver releases the service brake After the vehicle has launched the vehicle will creep at a constant speed at engine idle without the need to apply the accelerator pedal The configuration is useful for stop and go applications allowing the vehicle to launch and creep without applying the accelerator Creep Mode Cree...

Page 27: ...DRIVING Features Y53 1272 1B1 08 17 25 2 ...

Page 28: ...er What is a Maintenance Program 27 What is the Air System 29 Air Dryer Maintenance 32 Proper Transmission Lubrication 32 Vehicle Towing 33 How to Drain Fluid 33 How to Fill Fluid 34 Troubleshooting 34 MAINTENANCE 26 Y53 1272 1B1 08 17 3 ...

Page 29: ...pages contain a table of maintenance tasks with the related intervals for each task on the right side of the table The top of the table displays a guide to a maintenance interval and its schedule Some tasks are dependent on the vehicle application These tasks will be shown as separate tasks and will have the words ON HIGHWAY CITY DELIVERY or OFF HIGHWAY after the description These tasks are differ...

Page 30: ...C D E Air Air Compressor Governor Replace air strainer Air Lines Check condition and routing to prevent chafing System Lubricate see What is the Air System on page 29 Inline Filters Replace elements or clean with solvent Air Dryer Perform the checks listed Air Dryer Oil Coalescing Desiccant Cartridge Replace Cartridge Annually regardless of mileage MAINTENANCE What is a Maintenance Program 28 Y53 ...

Page 31: ...required Main and Auxiliary Transmission Check the oil level refill as required Main and Auxiliary Transmission ON HIGHWAY Drain lubricant while warm Flush each unit with clean flushing oil 500 000 miles 800 000 km Main and Auxiliary Transmission OFF HIGHWAY Drain lubricant while warm Flush each unit with clean flushing oil Related concepts Related reference What is the Air System Important safety...

Page 32: ...ure to comply may result in death personal injury equipment or property damage WARNING Never connect or disconnect a hose or line containing air pressure It may whip as air escapes Never remove a component or pipe plug unless you are certain all system pressure has been depleted Failure to comply may result in death personal injury equipment or property damage WARNING Never exceed recommended air ...

Page 33: ...comply may result in death personal injury equipment or property damage Your vehicle s compressor takes outside air and compresses it usually to 100 120 psi 689 827 kPa The compressed air then goes to the reservoirs to be stored until needed When you operate your air brakes the stored compressed air flows into the chambers where it is used to apply your truck and trailer brakes That is why when yo...

Page 34: ...sely followed 1 Maintain lubricant level and inspect regularly 2 Follow maintenance intervals see Transmission Lubrication Change Intervals on page 33 3 Use the correct grade and type of lubricant see PACCAR Transmission Lube Specification on page 37 4 Buy lubricant from an approved dealer Mixing of Oil Types CAUTION Do not mix engine and gear oil in the same transmission Mixing engine and gear oi...

Page 35: ...ior for leaks Look around the oil filter and exterior seals for damage and replace as necessary On Highway Check fluid levels and inspect for leaks at regular PM maintenance intervals not to exceed 12 000miles Drain and replace lubricant every 500 000 miles 800 000 km Off Highway Check fluid levels and inspect for leaks every week Drain and replace lubricant interval should not exceed 60 000 mi 96...

Page 36: ...restored by resetting the Transmission Control Module TCM Use the following procedure to reset the TCM 1 Continue to drive the vehicle to a safe location before selecting N NEUTRAL NOTE Once N NEUTRAL is selected a gear engagement may not be allowed de pending on the nature of the problem 2 Place the Transmission Driver Interface Device in Neutral N 3 Set the vehicle parking brake WARNING Apply pa...

Page 37: ... 365 days a year They can help you get roadside assistance They have a custom mapping system which locates authorized PACCAR engine dealers and Independent Service Providers ISPs near you and lists types of services offered hours of operation and contact information They can assist with jump and pull starts tires trailers fines and permits chains towing hazardous clean up out of fuel roadside mech...

Page 38: ...Chapter 4 INFORMATION In this Chapter General Model Information 37 PACCAR Transmission Lubricant Capacities 37 PACCAR Transmission Lube Specification 37 INFORMATION 36 Y53 1272 1B1 08 17 4 ...

Page 39: ...or destroy the trans mission identification tag The blank spaces provided below are for recording transmission identification data Have these reference numbers handy when ordering replacement parts or requesting service information Transmissio n Model Transmisiso n Serial Number PACCAR Transmission Lubricant Capacities Transmissions equipped with Power Take Off PTO or oil coolers are great than th...

Page 40: ...rebranders for PS 386 are also acceptable INFORMATION PACCAR Transmission Lube Specification 38 Y53 1272 1B1 08 17 4 ...

Page 41: ...INFORMATION PACCAR Transmission Lube Specification Y53 1272 1B1 08 17 39 4 ...

Page 42: ...neral Safety Instructions 7 I Illustrations 6 L LOW Mode 16 Lube Interval 33 Lube Specification 37 M Maintenance Schedule 27 Manual Mode 18 O Override 19 P PACCAR AMT 13 PACCAR AMT Shifting gears 15 PACCAR Transmission 27 33 PACCAR Transmission Controls 13 PACCAR Transmission Lubrication Specification 37 PACCAR TransmissionAir Dryer 32 PACCAR TransmissionDrain Fluid 33 PACCAR TransmissionFill Flui...

Page 43: ...R Roadside Assistance 35 S Safety 5 Safety Alerts 5 Start up 19 T Transmission 32 W What is the Air System 29 Index ...

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Page 45: ...x 1518 vue A 98009 PACRI P O Box 1518 Bellevue WA 98009 Powertrain Y53 1272 1B1 ...

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