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2010 43QGP Allegro Bus
For Your Information (FYI) Files

CLICK ON THIS LINK FOR A NUMERICAL LISTING OF MY FOR YOUR INFORMATION (FYI) FILES

2010 43QGP Allegro Bus Electrical Panel, revision 2

FYI-001-2, MAIN electrical Panel, revision 2.

Allegro Bus ECM Data

FYI-002, Cummins ISL Engine's Control Modual (ECM) Template.

Coach 7 Pin Tow Connector

FYI-003, One method of preventing water problems in the Coach 7 Pin Tow Connector.

Window Awning Mounting

FYI-004, Procedure used to remove pop rivet PINS left by Tiffin after installing the awnings.

CB Antenna Installation

FYI-005, Procedure used to install the Firestik Antenna.

Aqua-Hot Control Panel Connections

FYI-006, Various electrical connections.

Window Awning Quick Repair

FYI-007, A Quick Repair of the Awnings.

Residential Refrigerator Power Consumption

FYI-008, Kitchen Aid Residential Refrigerator Power Consumption.

Installing a T-P Roll Brake

FYI-009, One Method of preventing the toilet paper from unrolling while driving.

Galley Sink Drain Leak

FYI-010, Flexable PVC used by Tiffin for drains will not withstand the frequent slide retract and extend operation which bends and kinks the pipe.

Mini-State Antenna Operation

FYI-011, Explanation on how the Mini-State antenna operates.

Tiffin's Bedroom Slide Fiberglass Repair

FYI-012, Repair procedure used by the Tiffin service center to repair the fiberglass sidewall crack near the passenger side bedroom slide.

Repairing a Aqua-Hot Exhaust Leak

FYI-013, How to prevent exhaust fumes from leaking around the steel exhaust pipe.

Disassembly & Reassembly of a Carling Technologies Switch w/LEDs

FYI-014, The incandescent bulbs were remove and replaced with 5mm LEDs with a dropping resistor.

120 VAC Electrical Load Center Layout

FYI-015, 2010 43QGP Allegro Bus Electrical Load Center.

Hot and Cold Fresh Water System

FYI-016-3, Revision 3, includes modifications to the Hot and Cold Water Plumbing System.

Installing an Air Filter for the House Battery Compartment

FYI-017, Installation of a Foam Filter to prevent dust and dirt migration into the battery compartment.

Replacing the Allegro Bus Engine Air Filter

FYI-018, Procedure to remove and replace the Allegro Bus engine air filter.

Radial Tire Run Out Gauge, Cheap

FYI-019, Procedure for checking the radial tire's run out on the cheap.

Searching for Multiple Words or Files on TRVN

FYI-020, A short cut to search the TRVN files.

MCD Window Shade Wireless Control

FYI-021, Short cut to understanding the MCD controls.

External Water Pressure Regulator

FYI-022, Basic construction of a water pressure regulator system.

Battery Wiring Connections

FYI-023, HOUSE Battery Wiring.

Magnum 2812 Inverter Programming

FYI-024, A few short cuts to aid in programming the Magnum inverter.

Precision Circuits Load Shedding

FYI-025, Explanation of the load shedding schedule for a 43QGP Allegro Bus.

Magnum 2812 Inverter AGS Trivia

FYI-026, Magnum 2812 AGS trivia.

Bedroom Slide Circuit Breaker Reset

FYI-027, Manual Slide Circuit Breaker Resetting.

Manual Retraction of the HWH Leveling Jacks

FYI-028, One Method of Manually Retracting the HWH Jacks.

Powerglide Chassis Ride Height Adjusting

FYI-029, Procedure to set the Powerglide Chassis Ride Height on a Allegro Bus.

AC/HP Noise Elimination

FYI-030, Procedure to prevent some shut down noise on the AC/HP unit.

Coach Step RV Steps, part "A"

FYI-031A, First file related to repairing the steps.

Coach Step RV Steps, part "B"

FYI-031B, Second file related to repairing the steps.

Coach Step RV Steps, part "C"

FYI-031C, Third file related to repairing the steps.

Coach Step RV Steps, part "D"

FYI-031D, Fourth file related to repairing the steps, revised to add part number for replacement Nylon plugs.

Cleaning the HWH Jack Rams

FYI-032R1, Revised procedure to clean the HWH Jack Cylinders.

New Ultra Leather Headboards

FYI-033, Replacing the OEM fabric Headboards with Ultra Leather.

Tiffin's Gally Slide Repair

FYI-034, Tiffin's method to repair a galley drain leak.

Outside Light Lens Removal

FYI-035, Method of removing and replacing the outside light lenses.

Cleaning Slide End Windows

FYI-036, Explanation on how remove the slide end window screen to gain access for cleaning the window.

Bedroom Passenger Side Slide Problem

FYI-037, Passenger Side Slide Blocks are broken allowing the slide to drop down causing a paint mis-match.

Emergency Egress Window

FYI-038, A procedure to quickly exit the coach through the bedroom window.

Shower Head with Pause Switch

FYI-039, New shower head capable of being turned OFF, to enable shutting off the shower while soaping the body.

Tiffin Paint Codes, All Models

FYI-040, Tiffin Motorhomes Paint Codes, All Models.

Tiffin Chassis Bare Metal

FYI-041, Tiffin Motorhomes chassis painting leaves a lot of bare metal.

Black Tank Flush

FYI-042, How the Tiffin Black Tank Flush System is designed and operates.

Precision Circuits Inc. "Brown Out" display

FYI-043, Understanding what could be happening if you see a "Brown Out" displayed on your Control Monitor Panel.

Opening the Guest Spotlight

FYI-044, How to remove the spotlight bezel to access the spotlight bulb for replacement.

Bedroom Slide Teflon Blocks

FYI-045, Checking your coach's hydraulic bedroom slide's Teflon blocks to make sure they are installed properly.

Drivers Side Slide Floor Delamination

FYI-046, Tiffin Motorhomes drivers side plywood slide floor delamintation.

New Driver Side Slide Floor Construction

FYI-047, Information with photos of how Tiffin is constructing the new slide floor.

Drive and Tag Axle Wheel Hub Seals

FYI-048, What you are possibly seeing if there are black streaks on your wheels.

New Driver Side Drip Rail

FYI-049, Information on the new drivers side drip rail Tiffin is installing along with the new cap rails.

Cap Rails Over The Years

FYI-050, Three versions of Tiffin Cap Rails during the last decade.

VMSpc Parameter Identification Numbers

FYI-051, A list of the various VMSpc PID numbers collected over the years while owning coachs powered by Caterpillar, Mercedes Benz and Cummins Engines. The green highlited PIDs are currently used to view sensors on our 2010 Allegro Bus.

Crusingator Tag Axle Dump System

FYI-052, Modifications made to the Tag Axle Air Bag Dump System on our 43QGP Allegro Bus to make the system operate correctly.

The Language Barrier

FYI-053, A common language problem when attempting to explain a coach problem at Red Bay.

Wireless Interference

FYI-054, Interference between wireless devices while at the Red Bay Tiffin Service Center.

Reversing the Water Pump Switch and pump ON indicator

FYI-055, Relocated the water pump switch to the right side of the pump ON indicator to lessen the occurance of turning ON/OFF the water pump when you desired to turn ON/OFF the overhead lights.

Battery Equalizing

FYI-056, Scientific testing the wet cell battery before equalizing.

Powerglide EPA 2010 Cummins ISL Belt Routing

FYI-057, Fan Drive Belt and Engine belt routing for the Cummins ISL Engine.

Operation of Key Fob & Key Pad

FYI-058, The following information is based on HOW our Tri-Mark System operates as installed by TMH.

Rebalancing the Tag Axle Powerglide Bus Chassis

FYI-059, Instructions and links on how to rebalance the Allegro Bus Powerglide Tag Axle Chassis.

On Board Coach Air Supply

FYI-060, The coach's on board air supply of DRY air for inflating tires and other items using air pressure.

RV Step Maintenance - Grounds (Coach Step)

FYI-061, This grounding problem happens to be on a Coach Step RV Step, however it also applies to the Kwikee RV Step installed by Tiffin as well.

Powerglide Welded Support Brace

FYI-062, The Powerglide chassis has a metal support across the rear of the engine which Tiffin uses to mount the coolant tank and power steering fluid tank on, our coach had that support welded to an adjacent metal support. The weld has broken twice after being re-welded by Tiffin. My method of repair uses a thick piece of steel which is bolted at both ends.

NEW Fiberglass Rooftop cracks

FYI-063, Eight months after Tiffin installed metal cap rails to replace the fiberglass cap rails on our coach which had ONE crack, our coach in the last two weeks developed and shows 28 new cracks.

Replacing the Dometic 4310 toilet flush switch

FYI-064, A short file on how to replace the Dometic toilet flush/dump switch.

Tightening a loose Kitchen Aid refrigerator/freezer handle

FYI-065, A quick method to tighten a loose handle before the screw is torn from the door face making a simple repair a big problem.

Powerglide Chassis Cummins EPA 2010 ISL DEF Heater Hose Connections

FYI-066, This is my effort to document the CORRECT Powerglide Chassis DEF heater Hose Connections on the Engine.

Removing the Powerglide 43QGP Allegro Bus Engine Access Cover

FYI-067, Simple step by step instructions on how to remove and reinstall the engine access cover.

Battery and Coolant Test Equipment

FYI-068, Two pieces of test equipment used to make caring for and testing fluids easier.

2010 43QGP Allegro Bus Aqua-Hot & Locations of the Cozy Heat Exchangers

FYI-069, An attempt to explain the operation of the Aqua-Hot system on our 2010 43QGP Allegro Bus.

Tiffin's HOUSE Batteries

FYI-070, Explaining the difference between the 232 Amp Hr. HOUSE (6 volt) battery and the 216 Amp Hr. HOUSE (6 volt) battery.

Tiffin's HOUSE Batteries

FYI-070-1, Revision 1, Explaining the difference between the 232 Amp Hr. HOUSE (6 volt) battery and the 216 Amp Hr. HOUSE (6 volt) battery.

Wheel Centering Tool

FYI-071, Using a wheel centering tool set to properly install a coach wheel preventing wheel hop or imbalance.

Cabin Curtains

FYI-072, Reasons and method of installing a set of cabin curtains to to provide better heating or cooling of the front cab area.

"Coach Step" Replacement Motor, v1

FYI-073-v1, Searching, Finding and Modifying a window motor into a step motor at a reasonable cost, the revision covers the purchase of an exact motor replacement requiring ONLY a modification to install a two wire water tight plug.

Replacing a Teflon Block on the Bedroom Slide

FYI-074, Replacing a broken Teflon Block on the Passenger Side Bedroom Slide.

Servicing the 10KW Onan Generator

FYI-075, Servicing the Air Filter, Fuel Filter and Oil Filter while draining and refilling the Generator's Engine Oil.

Replacing the Engine's Air Filter

FYI-076, Replacing the OEM paper air filter with a washable durable synthetic air filter media from K & N filters.

Fumoto Oil Drain Valve or Not

FYI-077, Replacing the OEM Cummins Oil Drain Plug with the Fumoto Oil Drain Valve, too many question were left unanswered to make a change at this time.

My 2010 Allegro Bus Fuel Economy

FYI-078, This file shows the fuel economy of our Cummins EPA 2010 ISL engine over a two year period. The file is broken down on an annual basis for years 2011 and 2012.

Whirlpool Washer Drain Filter Access

FYI-079, Recent TRVN member discussion led me to investigate if our washer had a drain filter or not. None of the various washer manuals found mentioned any drain filter, however a few members stated there was a filter. After a little exploration the drain filter was found.

My Allison 3000 Transmission

FYI-080, A few simple keystrokes on the transmission selector pad to access infomration and fault codes.

AC/HP Communications and Electrical System

FYI-081-1, This section will give information on the RV Comfort Zone Control Thermostat used in many Allegro Bus coachs.

AC/HP Communications and Electrical System

FYI-081-2, This section will provide information on the Precision Circuits Incorporated Power Control System used in many Allegro Bus coachs.

AC/HP Communications and Electrical System

FYI-081-3, This section will provide information on the Coleman Heat Pump Zone Control box located in the return air plenum of each AC/HP.

AC/HP Communications and Electrical System

FYI-081-4, This section will provide information on the Coleman Heat Pump Zone Control box and it connection to the AGS module.

Tiffin (Alphabetical) Part Inventory Listing, v4

FYI-082-A, Alphabetical Parts Listing for Tiffin Motorhomes, version 4.

Tiffin (Numerical) Part Inventory Listing, v4

FYI-082-N, Numerical Parts Listing for Tiffin Motorhomes, version 4.

Reasons to clean your RV's FRONT wheels and tires

FYI-083-A, Cleaning the coach's front wheels, tires, axle and brakes.

Reasons to clean your RV's TAG wheels and tires

FYI-083-B, Cleaning the coach's tag wheels, tires, axle and brakes.

Reasons to clean your RV's DRIVE wheels and tires

FYI-083-C, Cleaning the coach's drive wheels, tires, axle and brakes.

Reasons to clean your RV's wheels and tires

FYI-083-D, Cleaning the coach's wheels, tires, axle and brakes.

STM-703C & STM-7000 Rear and Side View Camera System Setup

FYI-084, This is my attempt to simply explain how to setup the STM-703C or STM-7000 Rear and Side View Camera System installed on many of Tiffin's coachs.

Precision Instruments 1 Inch Drive Torque Wrench

FYI-085, This 200 - 600 Ft. Lb. One Inch Drive Split-Beam Click Torque Wrench is capable of handling most if not all coach torque jobs a coach owner will encounter.

Dometic Patio Awning Rain Dump Feature

FYI-086, A short explanation on how the dump feature operates on our 2010 Allegro Bus.

Draining and Refilling the Allegro Bus Powerglide Fan Drive Gearbox Lube

FYI-087, My method of accessing the side radiator fan drive gearbox to perform bi-annual maintenance.

Tiffin's Roof/Ceiling Assembly

FYI-088, TYPICAL Roof/Ceiling assembly for all 101 inch wide Tiffin coaches.

Replacing the Powerglide Coolant Tubing

FYI-089, The coolant tubing on our 2010 Allegro Bus was shedding its black power coat paint, I asked Tiffin to supply the materials to replace the original coolant tubing.

Coolant Compatibility Matrix

FYI-090, There is usually a serious discussion when the subject of engine coolant is addressed. In an effort to clear away some of the word debris here are four engine coolants COMPARABLE to each other, Shell Rotella Extended Life Coolant is the coolant used in the Powerglide chassis engine.

Programming the Tri-Mark E-FOB

FYI-091, If the Tri-Mark E-FOB (key fob) Requires programming or re-programming this method in my opinion is the easiest option to use with the receiver mounted in the basement.

Driver's Side Slide Gasket

FYI-092, As many Tiffin owners have found the driver's side slide gasket looses its grip on the trim after moisture gets to and rusts the metal teeth in the gasket.

Powerglide CONSOLIDATED Maintenance Schedule, revised 8/23/2013

FYI-093-2, Tiffin Motorhomes has published several Powerglide Maintenance Schedules over the past five or six years. This is my attempt to CONSOLIDATE the correct maintenance information into one file, current as of 8/23/2013. It is the coach owners's responsibility to preform the correct Powerglide chassis maintenance.

Powerglide Front and Rear Fuse and Relay Panels

FYI-094, Listing of the Allegro Bus Powerglide Chassis Fuse and Relay Panels.

By-Passing The Tiffin Installed Inverter

FYI-095, A short explanation on "How To" By-Pass the Tiffin Installed Inverter when there is no power from the inverter powered electrical circuits.

Replacing the Cummins Engine Coalsecing Filter

FYI-096r1, Brief explanation on "How To" replace the Cummins Engine Coalsecing Filter, revision shows bolt tightening sequence and bolt torque value.

Replacing the Coach Differential Oil

FYI-097, My method of safely replacing the Powerglide Allegro Bus Differetial Oil.

Image Resizer

FYI-098, A quick simple program used to resize photos on a Windows 7 computer.

Replacing the Headlight Bulbs on the Allegro Bus

FYI-099, In an attempt to provide better lighting for nighttime driving, the four H1 OEM headlight bulbs were replaced with four 8,000K Headlight Bulbs, which display a bluer light.

2010 43QGP Allegro Bus Chassis Measurements

FYI-100r1, Powerglide 43 QGP chassis measurements, C/L to C/L all axles, C/L to C/L front axle to drive axle, C/L to C/L drive axle to tag axle and C/L to C/L front axle to tag Axle.

RV Road Speed vs Engine Speed v8 - Locked

FYI-101, Information on how to download, make changes to the file "RV Road Speed vs Engine Speed v8" save the file and print the file.

RV Weighing Program v15.5

FYI-102, Information on which Excel CELLS are changeable in the RV Weighing Program, the changeable CELLS are highlighted in GRAY. All other CELLS are LOCKED and the information in the CELL cannot be changed.

2010 Allegro Bus Console Switches

FYI-103, Information about the various console switches, their wiring and their function.

Replacing the Air Dryer Cartridge

FYI-104, Information describing the changing of the Coach Haldex PURest Air Dryer's Filter Cartridge.

Lubricating the Ride Height Control Valve Linkage Grommets

FYI-105, Information on where you can purchase the Ride Height Control Valve Linkage Grommet lubricant.

Changing the Tag Axle Hub Oil

FYI-106, Information on draining and refilling the 80W-90 lube oil in the tag axles wheel hubs.

Mini-State Wireless Antenna Rotator Numbering, v1

FYI-107, Information explaining the DIRECTION numbering system used by the Mini-State HDMS9100 Wireless Antenna.

One Possible Solution if the Fisher - Paykel dishwasher will not run

FYI-108, A simple solution if your Fisher - Paykel dishwasher has not be operated for a long time and will not start.

Engine Block Heater Control Circuit

FYI-109, A simple explanation of how the engine block heater control circuit operates.

Replacing the Powerglide Chassis Engine Belts

FYI-110, How to remove and replace the engine belts on the Powerglide chassis Cummins EPA 2010 ISL9 engine.

Repairing the Driver's Front Slide Retract Stop Bolt

FYI-111, Fast simple repair to reinstall the retract stop bolt on the Driver's Front Slide.

Correct size of the AC/HP filters

FYI-112, Many owners have asked the question about cutting their own air filters, this file contains the measurements to preform that task.

Haldex PURest Air Dryer Pressure Relief Valve

FYI-113,The OEM 150 PSI relief valve occasionally will begin venting air pressure and not resetting, in that event most service facilities suggest replacing with the higher rated 200 PSI relief valve.

Tutorial - How to Use the "Motorhome Weighing Program"

FYI-114, This is my attempt to answer questions on "How to Use" the Excel Spreadsheet Motorhome Weighing Program to find the MINIMUM SAFE coach tire pressures based on individual weights by wheel position.

Allegro Bus Powerglide Fuel Level Tank Sensor

FYI-115, After serveral days of testing the coach dash fuel gauge, fuel tank capacity and fuel sensor I arrived at the following Allegro Bus Powerglide fuel information.

Emergency Repairs to the Haldex PURest Air Dryer

FYI-116, Two EMERGENCY repairs for the Haldex PURest Air Dryer.

Magnum Inverter Charger Trivia

FYI-117, Trivia regarding the CHARGING modes of the Magnum Inverter's CHARGER.

OTD Awning Motor Shaft Repair

FYI-118, IMO, This repair was necessary because Tiffin is not taking the time to properly set the EXTEND and RETRACT STOP settings on the awnings, this causing the motor shaft to become twisted until it breaks.

Powerglide Chassis, Air Suspension for Towing

FYI-119R1, Revised information necessary to make sure your Powerglide chassis coach is SAFELY towed.

Replacing the Power Steering Filter and Fluid

FYI-120, This file covers two methods of replacing the ATF (Automatic Transmision Fluid) and filter used in the power steering systsem on the Powerglide chassis

Push To Connect (PTC) Air Fitting

FYI-121, Our coach developed an air leak at the right front air bag, this file explains how the leak was located and repaired

Windshield Washer Wiper Arm Hose Replacement

FYI-122, Short file explaining how I replaced our Allegro Bus wiper arm hose and the rubber "O" ring on the brass fitting.

House Battery Slide Tray, Batteries, Battery Connections and battery dimensions

FYI-123, Description of care and work for keeping the house batteries, tray, battery connections and compartment clean

Removal of Aluminum Foil Liner inside the supply chamber of the Coleman AC/HP unit

FYI-124, Description of how I removed the foil liner from the foam insulation inside the AC/HP units

Replaced the Engine Alternator for the Second Time

FYI-125, Explanation of why the engine alternator has failed twice

Replacing the Slide Toppers

FYI-126, One method of how to replace the slide topper awnings.

Bending the Wiper Blade Arm

FYI-127, A quick way to increase the pressure on the windshield wiper arm.

Dreaded Cummins Warranty Service

FYI-128, Hopefully a complete saga of the Cummins/Tiffin DEF system on our coach.

Baby Has New Shoes

FYI-129, A little Tongue and Cheek about our Trials and Tribulations on finding, and having new Michelin tires installed.

Coach Step Shoulder Bolts

FYI-130, A continuing maintenance problem with our coaches "Coach Step" steps.

Lazy Susan Laptop Computer Mount

FYI-131, Computer mount for easy display of a laptop computer running software displaying engine operating parameters.

Air Powered Step Well Cover

FYI-132, This file explains the operation of the air powered step well cover in Tiffin coaches.

Coolant Level Sensor

FYI-133, After de-coding a dash "Check Engine" fault code, it appears the engines coolant level sensor and harness had allowed water to leak past the seal allowing pins to be corroded.

Pre-Filling Fuel Filters

FYI-134, Noticed a problem I had not previously faced when prefilling a fuel filter prior to installation.

Replacing Aqua-Hot Control Board

FYI-135, When one of the electronic components on the Aqua-Hot's control panel shorted there is only one choice, purchase a new control board.