Tiffin Motorhomes PowerGlide 2020 User manual

ALLEGRO RED-340 POWERGLIDE CHASSIS MANUAL
TIFFIN MOTORHOMES, INC.
105 2nd Street NW Red Bay, Alabama 35582 U.S.A.
2020PowerGlide®
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 www.P65warnings.ca.gov/diesel.

ALLEGRO RED-340 POWERGLIDE CHASSIS MANUAL
TIFFIN MOTORHOMES, INC.
Red 340 Chassis Owner’s Manual
Tiffin Motorhomes, Inc.
105 2nd Street NW, Red Bay, AL 35582 U.S.A.
Telephone [phone] • Facsimile 256.356.8219
E-Mail: [e-mail]
Copyright © 2019 by Tiffin Motorhomes, Inc. -- all rights reserved
Printed in the United States of America: Sixth U.S. Printing: March, 2019
[20190301]
DISCLAIMER
Many of the features and appliances described in this manual may or may not be reflected in the
actual motor home purchased, depending on the options and models selected by the motorhome
owner. 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.
Consequently, Tiffin Motorhomes reserves the right to make substitutions and improvements in its
makes and models of motorhomes without prior notification. Substitutions of comparable or better
materials, finishes, appliances, instrumentation, and instruction may be made at any time it is
deemed prudent to provide the customer with the best possible motorhome meeting the customer’s
requirements.

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Allegro Red 340 Tiffin 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. If for some reason this is not possible or if you
would like to call the manufacturers direct, you can contact them at the following
telephone numbers:
TIFFIN POWERGLIDE CHASSIS
256-356-0261
(Please have your VIN# ready)
COACH-NET
(Nights and weekends)
1-866-590-5937
CUMMINS ENGINE COMPANY
1-800-DIESELS (800-343-7357)
ALLISON TRANSMISSIONS
1-800-524-2303
MICHELIN TIRE
800-TIRE-HELP (800-847-3435)
Visit our website at www.tiffinmotorhomes.com

ALLEGRO RED-340 POWERGLIDE CHASSIS MANUAL
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Table of Contents
Chapter 1
Tire Care
Tire Care 1-2
Correct Tire Pressure 1-3
Chapter 2
Allison Transmission Operation
Driving Considerations 2-2
Fluid Level Check 2-4
Chapter 3
Brake System
Brake System 3-2
Compressed Air System 3-4
Air Dryer 3-6
Engine Brake 3-7
Chapter 4
Cummins Engine
EPA Mandates 4-3
ATS Warning Lamps 4-4
DPF Maintenance 4-4
Aftertreatment Operation 4-5
Engine Indicator Lamps 4-7
Engine Starting 4-11
Cold-Weather Starting 4-12
Engine Braking (optional) 4-12
Cruise Control 4-13
Engine Shutdown 4-14
Diagnostic Fault Codes 4-15
Towing Hitch 4-15
Chapter 5
Scheduled Maintenance
Scheduled Maintenance Chart 5-2
Fluids 5-5
Lubrication Points 5-8
Maintenance Parts 5-13
Tiffin Assistance 5-14
Chapter 6
Pre-Trip Inspection
Pre-Trip Inspection 6-2
Chapter 7
Instruments & Controls
Tiffin Instrument Panel 7-2
Driver’s Information Center 7-5
Trip Reset and Average Fuel Economy 7-9
Modes of Operation 7-10
Chapter 8
Air Supply
Air Supply 8-2

ALLEGRO RED-340 POWERGLIDE CHASSIS MANUAL
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Chapter 9
Warranty
Chassis Warranties 10-2
Chapter 10
Allegro Club
Allegro Club Information 11-2