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2019 PowerGlide
Owner's Manual
WARNING: Breathing diesel engine exhaust exposes you to chemicals known to the
State of California to cause cancer and birth defects or other reproductive harm.
Always start and operate the engine in a well-ventilated area.
If in an enclosed area, vent the exhaust to the outside.
Do not modify or tamper with the exhaust system.
Do not idle the engine except as necessary.
For more information go to
A L L E G R O
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Red Bay, Alabama 35582 U.S.A.
www.P65warnings.ca.gov/diesel.
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Summary of Contents for Tiffin Motorhomes PowerGlide 2019

  • Page 1 A L L E G R O B U S P O W E R G L I D E C H A S S I S M A N U A L 105 2 Street NW Red Bay, Alabama 35582 U.S.A. ®...
  • Page 2 All items, materials, instructions, and guidance described in this manual are as accurate as possible at the time of printing. However, because of Tiffin Motorhomes’ ongoing and dedicated commitment to excellence, improvement of Tiffin motorhomes is a continuing process.
  • Page 3 Tiffin Allegro Bus - PowerGlide Chassis Customer Support 256-356-0261 Monday-Friday 6 a.m. - 4:30 p.m. CST If you should require chassis service, you should first contact your nearest Tiffin ® Powerglide Chassis service center. Use https://tiffinmotorhomes.com/locate_dealer/map.php to find an authorized warranty service facility.
  • Page 4: Table Of Contents

    A L L E G R O B U S P O W E R G L I D E C H A S S I S M A N U A L T able of Contents ATS Warning Lamps Chapter 1 DPF Maintenance Aftertreatment Operation...
  • Page 5 A L L E G R O B U S P O W E R G L I D E C H A S S I S M A N U A L Chapter 7 Chapter 11 Instruments & Controls Allegro Club Graphical Instrument Cluster Allegro Club Information...
  • Page 6: Tire Care

    Chapter T I R E C A R E TIRE CARE...
  • Page 7: Tire Care

    T I R E C A R E Tiffin Motorhomes: “Wherever you go…we go” TIRE CARE • What is the most important component of tire care? TIRE PRESSURE o Why? Improved Ride Improved Tire Wear Improved Road Handling Improved Braking...
  • Page 8: Correct Tire Pressure

    T I R E C A R E Correct Tire Pressure • How to determine the correct pressure: Weigh each wheel position Set tire pressure according to chart * This Chart Shows Cold Inflation Pressures 315/80 R22.5 LRL X LINE ENERGY Z COACH Load per Wheel-end 22.5 X 9.00”...
  • Page 9 T I R E C A R E To determine the correct air pressure for your tires, load your motor home as you would normally travel, including water and fuel. Go to a truck scale as found at most major truck stops and weigh each wheel Michelin Recreational position independently, with driver and passenger(s) in the vehicle as described in the Vehicle Tire Guide...
  • Page 10: Allison Transmission Operation

    A L L I S O N T R A N S M I S S I O N O P E R A T I O N Chapter Allison Transmission Operation...
  • Page 11 A L L I S O N T R A N S M I S S I O N O P E R A T I O N Driving Conditions • Normal driving – best fuel economy o Select “D” and “Mode On” •...
  • Page 12: Fluid Level Check

    A L L I S O N T R A N S M I S S I O N O P E R A T I O N zone or if the temperature warning light on the gauge panel should come on, reduce your road speed, shift to the next lower gear and keep your tachometer within 500 RPM of engine governed speed.
  • Page 13 A L L I S O N T R A N S M I S S I O N O P E R A T I O N Check the transmission fluid level with the following steps: Conditions that must be met •...
  • Page 14: Brake System

    Chapter B R A K E S Y S T E M Brake System...
  • Page 15 B R A K E S Y S T E M Brake System Figure 3-1: Rear Brakes Front brakes are 17” air applied disc Rear brakes (Figure 3-1) double as parking brake Park brakes are spring applied – air released Two large 16.5 x 7”...
  • Page 16 B R A K E S Y S T E M NOTE: The rear brakes have dual chambers – one for the service brakes and one for the park brake. The service brakes are air applied and spring released. The park brake is spring applied and air released. The brake system is equipped with automatic slack adjusters that avoid the need to manually adjust your brakes.
  • Page 17: Compressed Air System

    B R A K E S Y S T E M Compressed Air System 36’ and 40’ Bus Non-Tag Tank Drains...
  • Page 18 B R A K E S Y S T E M 43' Bus Tag Tank Drains...
  • Page 19: Air Dryer

    B R A K E S Y S T E M Compressed Air System The compressed air system is comprised of multi-air storage tanks. The primary tank stores and supplies air for the rear brakes, the secondary tank stores and supplies air for the front brakes. When air is compressed it becomes hot.
  • Page 20: Engine Compression Brake

    B R A K E S Y S T E M Engine Compression Brake Figure 3-4: Compression Brake The engine compression brake (Figure 3-4): Improves braking power Reduces the chance of overheating brakes on steep grades Works in conjunction with the transmission to help slow the vehicle Has two stages (low and high) for varying terrain All brakes will build up heat when being used due to friction –...
  • Page 21 B R A K E S Y S T E M...
  • Page 22 C U M M I N S E N G I N E S Chapter Cummins ISL & X15 Engine ________________________________________________________________________________________________________________________ Cummins ISL9 Specifications Configuration Inline 6 Displacement 543 CU IN 8.9 L Lube Oil Capacity 24-28 QT 23-26 L Idle Speed 700-800 RPM Optional Compression Brake...
  • Page 23: Cummins Engines

    C U M M I N S E N G I N E S Injection Pressure 32,000 PSI Biodiesel Compatibility Up to B20 Maintenance Maintenance Item Miles/Kilometers Hours Months Oil and Filter 20,000 MI 32,000 KM Fuel Filter 20,000 MI 32,000 KM Overhead Adjustment 150,000 MI...
  • Page 24: Epa Mandates

    Nitrous Oxides (NOx) – 0.2 g/bhp-hr Particulate Matter (PM)- .01 g/bhp-hr To meet EPA guidelines, diesel engines installed in Tiffin Motorhomes PowerGlide chassis for domicile in Canada and the USA use an after treatment system (ATS) with a diesel particulate filter (DPF)to reduce particulate matter, and selective catalytic reduction (SCR) technology to reduce NOx downstream of the engine.
  • Page 25: Ats Warning Lamps

    C U M M I N S E N G I N E S The ATS is comprised of a diesel oxidation catalyst (DOC), and a diesel particulate filter (DPF). The DPF traps soot particles, and exhaust heat converts the soot to ash in the DPF in a process called regeneration (re-gen).
  • Page 26: Dpf Maintenance

    C U M M I N S E N G I N E S o When the tank is empty the Stop Engine Light will be illuminated and the vehicle speed will be limited to 5 MPH. Filling the tank with new DEF will remedy this condition. DPF Maintenance Eventually ash will accumulate in the DPF and the filter will require servicing.
  • Page 27 C U M M I N S E N G I N E S Regeneration is the process of converting the soot collected in the DPF into ash. Under some operating conditions, such as low speed, low load, or stop and go duty cycles, the engine may not have enough opportunity to regenerate the DPF during normal vehicle operation.
  • Page 28: Engine Indicator Lamps

    C U M M I N S E N G I N E S Warning Active regeneration can occur any time the vehicle is moving, and the exhaust temperature can remain hot after the vehicle has stopped moving. The exhaust temperature could reach 1500°F, which is hot enough to ignite or melt common materials, or to burn people.
  • Page 29 C U M M I N S E N G I N E S The CHECK ENGINE lamp illuminates when the engine needs to be serviced at the first available opportunity. The CHECK ENGINE lamp is amber, and looks similar to this: Another function of the CHECK ENGINE lamp is to flash for 30 seconds at key-on when one of the following occurs.
  • Page 30 C U M M I N S E N G I N E S An illuminated DPF lamp indicates that the DPF needs to be regenerated at the next possible opportunity. This can be accomplished by: 1. Changing to a more challenging duty cycle, such as highway driving, for at least 20 minutes. 2.
  • Page 31 C U M M I N S E N G I N E S NOTE: The HEST lamp does not signify the need for any kind of vehicle or engine service; it merely alerts the vehicle operator to high exhaust temperatures, it will be common for the HEST lamp to illuminate on and off during normal vehicle operation as the engine completes regeneration.
  • Page 32: Engine Starting

    C U M M I N S E N G I N E S Engine Starting Warning Do not use starting fluids with this engine. This engine is equipped with an intake air heater. Use of starting fluids could cause an explosion, fire, personal injury, severe damage to the engine, and property damage.
  • Page 33: Cold-Weather Starting

    C U M M I N S E N G I N E S Starting Set the parking brake. 1. Place the transmission in neutral. 2. Turn the key to the ON position. 3. Wait a minimum of 10 seconds. If the “Wait-to-Start” lamp is still illuminated after 10 seconds, continue to wait until the lamp is no longer illuminated.
  • Page 34: Cruise Control

    C U M M I N S E N G I N E S Warning Do not use the engine brake on wet, icy, or snow-covered roads. Using the engine brake could result in loss of vehicle control, possibly causing personal injury, death, or property damage. Engine brakes are devices that use the energy of engine compression to provide vehicle retardation.
  • Page 35: Engine Shutdown

    C U M M I N S E N G I N E S NOTICE Cruise control allows you to automatically control the speed of the vehicle above 32 MPH (50 km/h). Do not shift to Neutral (N) when using cruise control. This will cause the engine to over-speed, which can damage the engine.
  • Page 36: Diagnostic Fault Codes

    C U M M I N S E N G I N E S Diagnostic Fault Codes The engine control (ECM) monitors the engine sensors and parameters while the engine is in operation. The ECM can detect certain conditions that are outside of the normal operating parameters. The ECM will log diagnostic fault information, and illuminate the check engine light, stop engine light, or the malfunction indicator light to inform the operator of a problem.
  • Page 37 C U M M I N S E N G I N E S 4-17...
  • Page 38: Scheduled Maintenance

    Chapter S C H E D U L E D M A I N T E N A N C E Scheduled Maintenance...
  • Page 39 S C H E D U L E D M A I N T E N A N C E Scheduled Maintenance SERVICE INTERVAL Annually Required Fluids, Lubricants, and Procedures (Miles x 1,000) Air System: Air Dryer Inspect for leaks and blockage of purge valve (8) Air Intake Screen Inspect for blockage Primary Air Tank Reservoir...
  • Page 40 S C H E D U L E D M A I N T E N A N C E Annually Required Fluids, Lubricants, and Procedures SERVICE INTERVAL (Miles x 1,000) Engine Systems: Engine Oil Filter Replace engine oil filter per engine manual (1) Engine Oil Change engine oil per engine manual (1) Exhaust Muffler &...
  • Page 41 S C H E D U L E D M A I N T E N A N C E Annually Required Fluids, Lubricants, and Procedures SERVICE INTERVAL (Miles x 1,000) Suspension & Axles: Automatic Slack Adjusters Lubricate W/NGLI #2 grease (1) Slack Adjuster Cam Shafts Lubricate W/NGLI #2 grease (1) Slack Adjuster Clevis Pins...
  • Page 42: Fluids

    S C H E D U L E D M A I N T E N A N C E Fluids Engine Oil The primary oil recommendation for the ISL / ISX engine is a high-quality SAE 15W-40 oil with API classification CJ-4 that meets CES-20081 standards.
  • Page 43 S C H E D U L E D M A I N T E N A N C E Engine Coolant (cont.) IMPORTANT! When refilling the cooling system follow these instructions: 1) Remove surge tank lid/ radiator cap. (located on the surge tank) 2) Fill radiator through the surge tank (5 GPM max) 3) Once coolant is visible and halfway up the sight glass on the surge tank, start and run engine at idle for one minute, then at high idle for an additional two minutes.
  • Page 44 S C H E D U L E D M A I N T E N A N C E Differential Oil The differential in your coach was factory filled with Shell Spirax 75W-90 full synthetic lubricant. The fluid level should be checked every 10K miles. If make-up oil is required use only full synthetic 75W-90 lubricants. Never mix mineral oils with synthetic lubricants.
  • Page 45: Lubrication Points

    S C H E D U L E D M A I N T E N A N C E Lubrication Points...
  • Page 46 S C H E D U L E D M A I N T E N A N C E Lubrication Points...
  • Page 47 S C H E D U L E D M A I N T E N A N C E Lubrication Points 5-10...
  • Page 48 S C H E D U L E D M A I N T E N A N C E Lubrication Points 5-11...
  • Page 49 S C H E D U L E D M A I N T E N A N C E Components Remarks Total Two grease fittings; One ZF Independent Front on top & bottom of Suspension Knuckle Post knuckle post, lubricate both sides of suspension Two grease fittings;...
  • Page 50: Maintenance Parts

    S C H E D U L E D M A I N T E N A N C E Maintenance Parts ISL9 Primary Fuel Filter/Water Sep W/WIF sensor Cummins Filtration part # FS1003 Tiffin part # 31647 Secondary Fuel Filter Cummins Filtration part # FF63009 Tiffin part # 5059830 Engine Oil Filter...
  • Page 51 S C H E D U L E D M A I N T E N A N C E Maintenance Parts X15 Primary Fuel Filter/Water Sep W/WIF sensor Cummins Filtration part # FS19763 G Tiffin part # N/A Secondary Fuel Filter Cummins Filtration part # FF5825 NN Tiffin part # N/A Engine Oil Filter...
  • Page 52 S C H E D U L E D M A I N T E N A N C E For assistance with your Tiffin PowerGlide Chassis Please contact one of the following chassis specialists at Tiffin Motorhomes, Inc. 256-356-8661 Service Greg Dees Billy Payne, extension 3862...
  • Page 53 S C H E D U L E D M A I N T E N A N C E 5-16...
  • Page 54: Pre-Trip Inspection

    Chapter P R E - T R I P I N S P E C T I O N Pre-Trip Inspection...
  • Page 55 P R E - T R I P I N S P E C T I O N Pre-Trip Inspection Check fluid levels & add as necessary Check tire inflation pressure Look for fluid leaks Before starting your motor home daily, a few things must be checked. By doing so, you ensure that a safe trip is in order and lessen your chances of experiencing difficulties while on the road.
  • Page 56 P R E - T R I P I N S P E C T I O N After you have completed your inspection, you may now start your engine. Turn the key to the run position Never use ether or any other and wait for the wait to start light to turn off.
  • Page 57 Chapter I N S T R U M E N T S & C O N T R O L S Instruments & Controls...
  • Page 58 I N S T R U M E N T S & C O N T R O L S GRAPHICAL INSTRUMENT CLUSTER Operation Guide VDC00027 Formerly VEC13A011-03-OM Last revision: 7-Feb-18 MW Copyright © 2018 Valid Manufacturing Ltd. All rights reserved. Information in this document is subject to change without notice.
  • Page 59 I N S T R U M E N T S & C O N T R O L S CONTENTS Safety Instructions ..............................4 Overview....................................5 Cleaning your GIC screen ............................5 Indicator Quick Reference ............................. 6-7 Gauge Quick Reference..............................8 Navigation....................................
  • Page 60: Safety Instructions

    I N S T R U M E N T S & C O N T R O L S SAFETY INSTURCTIONS WARNING: Driving while distracted can result in loss of vehicle control. Do not make adjustments in the selectable display on the graphical instrument cluster under conditions that will affect your safety or the safety of others.
  • Page 61: Overview

    I N S T R U M E N T S & C O N T R O L S OVERVIEW The Graphical Instrument Cluster (GIC) is primarily a display device that communicates electronically with multiple pieces of equipment on the coach. To familiarize yourself with the indicators and gauges, refer to the quick reference guide on pages 6 and 8.
  • Page 62: Indicator Quick Reference

    I N S T R U M E N T S & C O N T R O L S INDICATOR QUICK REFERENCE Symbol Description Page Symbol Description Page Diesel Particulate Filter Check Transmission Tag Axle Dumped High Engine Oil Temp High Exhaust High Engine Coolant Temperature...
  • Page 63 I N S T R U M E N T S & C O N T R O L S INDICATOR QUICK REFERENCE Symbol Description Page Symbol Description Page Low Secondary (Front) Low Battery Tank Air Pressure Low Primary (Rear) Tank Air Pressure...
  • Page 64: Gauge Quick Reference

    I N S T R U M E N T S & C O N T R O L S GAUGE QUICK REFERENCE ID Description Page # Engine coolant temperature Engine oil pressure Speedometer Odometer Fuel level Message center Odometer/ trip meter Fuel economy Tachometer 10 Informational display - selectable...
  • Page 65: Navigation

    I N S T R U M E N T S & C O N T R O L S NAVIGATION Joystick Knob The joystick knob is connected directly to the GIC and is primarily used Press Knob to navigate the selectable display by rotating the knob to scroll the menu or view and pressing to select that item (refer to page 18).
  • Page 66: Indicators

    I N S T R U M E N T S & C O N T R O L S INDICATORS Indicator Name Description The exhaust diesel particulate filter (DPF) has excessive soot levels and requires passive or active regeneration (regen) to burn off the soot to prevent a clogged filter. Passive regeneration occurs when the vehicle is driven at a challenging duty cycle, such as highway driving for at least 20 minutes, to increase exhaust temperatures.
  • Page 67 I N S T R U M E N T S & C O N T R O L S INDICATORS Indicator Name Description Seat Belt After ignition, the seat belt light will flash momentarily. The vehicle’s glow plugs must heat up before the vehicle is started. This indicator will remain lit until the glow plugs are ready (approximately 15 Wait to Start seconds, or longer in colder weather).
  • Page 68 I N S T R U M E N T S & C O N T R O L S INDICATORS Indicator Name Description Info Alarm Refer to page 23 for a list of INFORMATION alarms Caution Refer to page 24 for a list of CAUTION alarms Alarm Critical Alarm Refer to page 27 for a list of CRITICAL alarms Headlights...
  • Page 69 I N S T R U M E N T S & C O N T R O L S INDICATORS Indicator Name Description This symbol indicates that the diesel exhaust fluid (DEF) is low. The fluid creates a catalytic reaction that removes particles from the exhaust.
  • Page 70: Gauges

    I N S T R U M E N T S & C O N T R O L S GAUGES Engine Coolant Temperature This gauge measures the temperature of the engine coolant fluid. The message center will display a warning and sound an alert when the temperature is higher than the red warning level.
  • Page 71: Fuel Level - Engine & Generator

    I N S T R U M E N T S & C O N T R O L S GAUGES Fuel Level – Engine & Generator The fuel level is displayed at the bottom of the speedometer. When fuel falls below the factory programmed low level, the fuel indicator will turn red and an alert will sound.
  • Page 72: Odometer/Trip Meter/Fuel Economy

    I N S T R U M E N T S & C O N T R O L S GAUGES Odometer/Trip Meter/Fuel Economy Trip 1 or Trip 2 are items in the Selectable Display. Rotate the knob to display the item. Press the knob to switch between Trip 1 and Trip 2.
  • Page 73: Chassis Battery Voltage

    I N S T R U M E N T S & C O N T R O L S GAUGES Chassis Battery Voltage This gauge measures the chassis batteries, which are used when driving the coach; for example, starting the engine. When the voltage falls below 11.5V, the battery indicator will turn red and an alert will sound.
  • Page 74: Selectable Display

    I N S T R U M E N T S & C O N T R O L S SELECTABLE DISPLAY Press knob to make selection There are selectable displays located in the center of the speedometer and tachometer. They are navigated by means of a knob mounted adjacent to the GIC.
  • Page 75: Tachometer Selectable Display

    I N S T R U M E N T S & C O N T R O L S SELECTABLE DISPLAY Tachometer Selectable Display The center of the tachometer can display the following: • Center Gauge • Pre-Drive List •...
  • Page 76 I N S T R U M E N T S & C O N T R O L S SELECTABLE DISPLAY Accelerator Position - This gauge Generator – This displays the position of the readout indicates accelerator foot pedal. 100% is whether the generator fully depressed.
  • Page 77 I N S T R U M E N T S & C O N T R O L S SELECTABLE DISPLAY Pre-Drive Pre-Drive is an item in the Selectable Display. Use the knob rotation and button press to choose this. Refer to the menu map on page 28. This is an auto-scrolling list which displays active items requiring attention prior to vehicle travel.
  • Page 78: Alarm Messages - Information

    I N S T R U M E N T S & C O N T R O L S ALARM MESSAGES – INFORMATION INFORMATION messages relate to normal activities of the coach. MESSAGE DESCRIPTION Tag Axle Dumped Tag axle weight has been reduced. 7-22...
  • Page 79 I N S T R U M E N T S & C O N T R O L S ALARM MESSAGES - CAUTION CAUTION messages relate to items that require your attention. MESSAGE DESCRIPTION The Graphical Instrument Cluster has an internal error – the graphics application No Cluster Data has reported it has not received data from the cluster application within the last 15 seconds.
  • Page 80: Alarm Messages - Caution

    I N S T R U M E N T S & C O N T R O L S ALARM MESSAGES - CAUTION MESSAGE DESCRIPTION The Anti-Lock Brake System (ABS) has detected a fault and has disabled this ABS Warning feature.
  • Page 81 I N S T R U M E N T S & C O N T R O L S ALARM MESSAGES - CAUTION MESSAGE DESCRIPTION Water in Fuel Signal which indicates the presence of water in the fuel. The engine control module (ECM) battery measurement is above the factory- Battery Over Volt configured high battery threshold.
  • Page 82: Alarm Messages - Critical

    I N S T R U M E N T S & C O N T R O L S ALARM MESSAGES - CRITICAL CRITICAL messages relate to items that require your immediate attention. MESSAGE DESCRIPTION The Electronic Braking System (EBS) has reported a critical error. EBS Error The EBS controls normal braking in addition to the Anti-Lock Braking System (ABS) and Automatic Traction Control (ATC).
  • Page 83: Menu Map - Selectable Display Menus

    I N S T R U M E N T S & C O N T R O L S MENU MAP – SELECTABLE DISPLAY MENUS Selectable Display Menus To toggle between the speedometer and tachometer m enus, push the knob to the right or left. Refer to Settings Menu on following page.
  • Page 84: Menu Map - Settings Menus

    I N S T R U M E N T S & C O N T R O L S MENU MAP - SETTINGS MENUS Settings Menus 7-28...
  • Page 85: Menu Map - Diagnostics

    I N S T R U M E N T S & C O N T R O L S MENU MAP – DIAGNOSTICS I/O Info System Info This screen shows the status of the discrete inputs and outputs connected directly to the rear connectors of the GIC.
  • Page 86 I N S T R U M E N T S & C O N T R O L S MENU MAP – DIAGNOSTICS System Info This screen displays the status of any alert message received since the ignition was turned on. The part numbers, firmware revisions and serial number are also shown.
  • Page 87 I N S T R U M E N T S & C O N T R O L S MENU MAP – DIAGNOSTICS J1939 CAN Info This displays all devices communicating on the vehicle’s J1939 Controller Area Network (CAN). CAN Bus Information J1939 Messages per Second: 444 Proprietary Messages per Second: 34...
  • Page 88: Parts Gallery

    I N S T R U M E N T S & C O N T R O L S PARTS GALLERY Rotary Joystick Graphical Instrument Cluster Assembly, 15" G2, TM, 500k 7-32...
  • Page 89 I N S T R U M E N T S & C O N T R O L S 5320 48 Ave. SE Salmon Arm, BC, Canada V1E 1X2 Phone: 250-832-6477 After Hours Emergency Service: 250-804-1247 Fax: 250-832-7746 sales@validmanufacturing.com www.validmanufacturing.com 7-33...
  • Page 90: Smart Wheel

    I N S T R U M E N T S & C O N T R O L S SmartWheel Steering Wheel The SmartWheel Steering Wheel (Figure 7-4) offers control of the horn, headlamp and marker lamp flash, cruise control, and wiper functions from switches mounted on the steering wheel.
  • Page 91 I N S T R U M E N T S & C O N T R O L S CRUISE FUNCTIONS 4.1 CRUISE CANCEL: Operation of this switch signals the cruise system to disengage without losing the current speed setting. 4.2 CRUISE RESUME: Operation of this switch actuates the Cruise Resume function of the engine controller.
  • Page 92 I N S T R U M E N T S & C O N T R O L S 7-36...
  • Page 93 Chapter A I R S U P P L Y Air Supply...
  • Page 94 A I R S U P P L Y Air Supply Two auxiliary air sources are provided for customer use. One in the front electrical compartment, and one at the rear of the coach near the air tank drains. These air supply connections can supply up to 120psi, although the volume of air at these connections is low.
  • Page 95 A I R S U P P L Y...
  • Page 96 Chapter T A G A X L E Tag Axle...
  • Page 97 T A G A X L E Tag Axle Operation A tag axle is installed on coaches longer than 40’ to distribute weight, improve ride, and add stability to the vehicle. The tag axle is not a “lift” style axle. However, air pressure in the tag axle is controlled while making sharp turns, and when backing up, to reduce vehicle turning radius and prevent excessive wear on the tag axle tires.
  • Page 98 Chapter W A R R A N T Y Warranty 10-1...
  • Page 99 W A R R A N T Y Warranty • Engine o Cummins ISL/ISX: 5 Years or 100,000 miles • Transmission o Allison 3000/4000 MH Series: 5 Years or 200,000 miles • Chassis o 3 Years or 50,000 miles • Drive Train o 3 Years or 50,000 miles •...
  • Page 100 W A R R A N T Y 10-3...

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