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2010 43QGP Allegro Bus
Modification Files
CLICK ON THIS LINK FOR A NUMERICAL LISTING OF MY MODIFICATION FILES
Additional Ventilated Shelving
MOD-001, Installation of ventilated shelving in various cabinets and rear closet.
Installing the Progressive Industries, EMS-HW-50C System
MOD-002, Installation of the Progressive Industries Energy Mananagment 50 Amp Hard Wired System.
Eliminate Sagging of the Tank Bay Floor
MOD-003, Cutting and Installing angle steel supports under the tank bay floor for additional floor support.
Insulating the Residential Refrigerator Ice Maker Water Line
MOD-004, Method of insulating the refrigerator ice maker water supply line to prevent freeze damage.
Installing New Carpet on Inside and Outside Coach Steps
MOD-005, Cutting and installing outdoor carpet on the inside and outside steps.
Replacing G4 Halogen Lamps with LED G4 Lamps
MOD-006, Method to remove the Halogen G4 lamps and replacing them with LED lamps.
Adding Additional Solar Panels
MOD-007, Adding solar panels to make 360 watts of solar power and "How to Wiring".
Jenn-Air Two Burner Cooktop
MOD-008, Installation and Wiring of the Jenn-Air two burner Cooktop.
Correcting the Fuel Fill Problem
MOD-009, Method to correct the Tiffin Fuel Filling problem, where fuel spits back and the tank cannot be completely filled.
Correcting the Fuel Fill Door Problem
MOD-010, Our fuel fill doors and fuel fill piping were not installed to allow for using keyed locking fuel caps. This modification make that possible.
Installing Front Quarter Panel Turn Signal and Clearance Lights
MOD-011, Procedure to install additional light for side turn signals and clearance lights.
Re-Positioning the Coach's Rear Skirt
MOD-012, Procedure to remount the coach rear skirt.
Sealing the Shore Power Cord Reel from the Coach's Living Area
MOD-013, Sealing the shore power reel compartment from the insdie coach living area.
Modifying a Standard Genturi Exhaust Stack for the Aqua-Hot System
MOD-014, Modifying a standard Genruri Exhaust Stack to accommodate the larger exhaust pipe of the Aqua-Hot.
Modifying the Onan's Genturi Stack
MOD-015 Modification to allow more fresh air to enter the exhaust air stream.
Three-way Switch lighting for the Living Room
MOD-016, Wiring method and schematic for installing three way lighting for the center row of the Living Room lighting.
Raising the Generator's Exhaust Pipe
MOD-017, Method to increase the Onan generator's exhaust pipe road clearance.
Insulating the Coach's Front Cap
MOD-018, Procedure used to install insulation into the front cap.
Installing a Bed Lift Handle
MOD-019, Building and installing a wooden lift handle to enable lifing the bed with one hand.
Stopping the Driver's Slide Roller's from Rattling
MOD-020, Quick low cost method of stopping some or all of the roller rattling on the driver side slide.
Painting the HWH Leveling Compartment
MOD-021, Tiffin left this compartment's steel walls with almost all bare metal, spray paint was used to cover the bare metal.
Relocating the Central Vacuum Cleaner
MOD-022, To provide additional working space, the central vacuum cleaner was reloated to the area between the chassis frame rails.
Re-organizing the Driver's Side Aqua-Hot Compartment
MOD-023, To provide additional working area the electronics panel was moved highter on the panel.
Driver's Side HOUSE Battery Compartment
MOD-024-0, Work to clean, paint and prevent water and debris from entering the compartment.
Driver's side HOUSE Battery Compartment Electrical
MOD-024-1, HOUSE Battery Diagrahm Electrical.
Driver's side HOUSE Battery Compartment Electrical, revision 2
MOD-024-2, HOUSE Battery Diagrahm Electrical, revision 2.
Driver's side HOUSE Battery Compartment Electrical, revision 3
MOD-024-3, HOUSE Battery Diagrahm Electrical, revision 3.
Installing an Aqua-Hot Fuel Used Hour Meter
MOD-025, Our coach did not come with a factory installed "Hour Meter" for the Aqua-Hot. While installing the hour meter I wired the meter to run ONLY while fuel was being consummed which is not how Aqua-Hot installs the meter.
Installing Closable AC/HP Bathroom Ceiling Vents
MOD-026, Procedure used to install closable vents in the rear bath.
Entry Door Switch Panel Modification
MOD-027, How To" file on removing, disassemble, install LED lighting and reassembly of the various door panel switches.
Permanent Black Tank Flush & Water Pressure Gauge
MOD-028, External PEX piping for the black tank flush and a inline water pressure gauge.
Pressure Tank installed in Fresh Water System
MOD-029, Method used to instal a water system pressure tank to reduce the water pumps SHORT run times.
Passenger Side HOUSE Battery Compartment
MOD-030, Designing, fabricating and installing a compartment to house six additional HOUSE batteries.
Saddle Bag Shelving
MOD-031,R2, Installation of additional steel shelving to allow storage above the slide trays on the outside of the chassis frames, revision 2. This revision changed the method and location of the shelves front support straps
Installing a Magnum Battery Monitor Kit (ME-BMK)
MOD-032, Method with wiring with photos and schematics of the installation.
Residentail Refrigerator Insulation
MOD-033, Additonal insulation installed behind the Kitchen Aid Refrigerator rear access panel.
Installing a 20 Amp GFCI Outlet for a Outside Electric Grill
MOD-034, Wiring and method for electric grill wiring.
Pantry Door Roller Door Catches Added
MOD-035, A second door catch was added to the driver side pantry doors to prevent them from opening and becoming damaged during slide retract or extend operations.
Coach Work Ramps
MOD-036, Fabrication of six work ramps to allow additional working space under the coach.
Allegro Bus Electric Window Switch
MOD-037, Instructions for reversal of the wiring on the Allegro Bus electric drivers window switch, to OPEN the window depress the FORWARD end of the switch, to CLOSE the window depress the REARWARD end of the switch.
Conversion to Manual Proportioning Valves
MOD-038-0, Plumbing schematic for both MANUAL and AUTOMAIC Tag Axle Proportioning Valves.
Conversion to Manual Proportioning Valves, revision 1
MOD-038-1, Plumbing schematic for both MANUAL and AUTOMAIC Tag Axle Proportioning Valves, revision 1.
Installing TV Sound Bar on the Slide TV
MOD-039A, Procedure used to install a Panasonic sound bar and connect item for Theater sound using the TV's remote control.
Installing TV Sound Bar on the Bedroom TV
MOD-039B, Procedure used to install a Panasonic sound bar and connect it for Theater sound using the TV's remote control.
Gray & Black Tank Flush System
MOD-040, Plumbing schematic and operation for both black and gray tank flushing.
Electric Window Screen Latch
MOD-041, Manual electric screen latch installed to allow opening or closing the Driver's Window Screen with the electic window switch.
Installing a New Aqua-Hot Engine Pre-Heat Pump
MOD-042, Procedure to retro fit a new engine pre-heat pump in place of the old pump.
Emergency Coach Access via the Electric Window
MOD-043, How to Build and Install a device to open the driver's electric window from outside the coach.
Coach Cockpit Curtain
MOD-044, Short method of maintaning a better "Colder or Warmer" temperature in the coach's cockpit without using the Aqua-Hot, LP furnace's or Heat Pumps.
Driver Side Cup Holder
MOD-045, Installing of a spacer to move the cup holder further from the coach wall, allowing use of larger and taller cups.
Coach Inside Assist Handle
MOD-046, Method to allow removal of the black electrical tape on the inside assist handle.
Making Access for Onan Fuel Filter
MOD-047, Drilling an access hole to allow removal and re-installation of fuel filter mounting bracket bolts.
Fan for Heat Duct in Bathroom
MOD-048, Building and installing a housing for a duct fan. The fan is used to pull additional heating into the coach's front bathroom.
Engine Compartment Lighting
MOD-049, Three additional (1156 bulb) light fixtures were added to the engine compartment to better illuminate the coach engine and the toad hook up area.
Dash AC Condensate Drain
MOD-050, Tiffin's Dash AC Condensate Drain makes a rusty stain on a concrete garage floor.
Shore Power Cord Reel Access
MOD-051, Access to the Shore Power Cord Reel through the closet and the outside coach wall.
Second Bedside Generator Switch
MOD-052, With the addition of a second bedside generator switch, the generator can be started or stopped from either side of the bed.
Co-pilot Seat Mount Modification
MOD-053, With this modification the co-pilot's seat can be moved further forward which allows more tilt to the seatback making long rides easier on the lower back.
Co-pilot Seat Mount Modification, v1
MOD-053-1, With this modification revision the co-pilot's seat mounting ALL hardware has been replaced with grade 8 couplers, bolts, nuts and washers in place of the standard grade 2 hardware to increase the safety factor.
Pilot Seat Mount Modification
MOD-054, A modification to the pilot's seat mount to raise the seat about 2 inches higher than the OEM mounting.
Pilot Seat Mount Modification, v1
MOD-054-1, With this modification revision to the pilot's seat mounting ALL hardware has been replaced with grade 8 couplers, bolts, nuts and washers in place of the standard grade 2 hardware to increase the safety factor.
Flashing Third Brake Light
MOD-055, A low cost modification to allow the coach's third brake light to flash ON and OFF when the service brake is being depressed.
Additional Rear Bathroom GFCI outlet
MOD-056, An additional GFCI outlet added to the rear bathroom to enable using a third or fourth electrical applicance.
AC/HP Vent in Rear Closet
MOD-057, In more recent years Tiffin has added this vent in the ceiling of the rear closet to aid in keeping the closet at a more livable temperature.
Entry Door Switch Panel Indicator Lights
MOD-058-r1, After recently installing white switch indicator LEDs, I decide to replace the switch ON indicator lamps with RED LEDs. This revision decreases the 12 LED's bright white light in the front of the coach.
Low Operating Pressure Control Valves
MOD-059, This file documents the various modifications necessary in order to consistantly control the tag axles suspension dump procedure and at the same time reduce the front axles weight under it rated capacity of 15,600 pounds.
Lighted ON/Off Switch for the LP/CO Detector
MOD-060, This is a modification for me, occasionally we have a CO alarm caused by hydro carbons not being completely vented from the garage prior to closing the RV garage doors and turning off the ceiling vent fan. In that event the alarm will scream, with the switch it is easier for me to turn the switch off then turn it back on when we get ready to travel.
In Prusuit of Reliable Tag Axle Air Dumping
MOD-061, Sixteen months into ownership of this coach and I hope this tag axle dump issue has finally been put to rest. After completing all of the modifications every test performed has functioned 100% of the time, more than I can say for the Tiffin design.
Pilot 12 VDC and 120 VAC outlets
MOD-062, Decided to add a 12 VDC outlet and 120 VAC duplex outlet near the Pilot for powering the laptop computer and the navigation system.
Final Tag Axle Dump Valve Configuration
MOD-063, After ninteen months and five trips to Red Bay our front axle over-weight issue is behind us.
Pull Installed on Computer Drawer
MOD-064, After breaking a fingernail for the third time we decided to install a drawer pull on the computer drawer.
Tag Axle Air Pressure Gauges
MOD-065, How to install a pair of air pressure gauges to display tag axle air bag pressure.
Coach Water Pressure Regulator
MOD-066, New water pressure regulator to prevent thermal expansion of the regulated water pressure supplied to the coach.
Coach Wall Art
MOD-067, If finally got tired of catching my clothes on the Tiffin installed bedroom wall art, made a change to new wall art to prevent the problem.
Piggy Backing a Receiver
MOD-068-A, A simple method for installing a second 2" receiver on top of the Tiffin Curt 2" Receiver.
RV Spare Tire Carrier Design and Materials
MOD-068-B-r1, Design and material list for a spare tire carrier along with photos.
RV Spare Tire Carrier
MOD-068-C, Photos demostrating the operation of the spare tire carrier.
Door Awning Openings
MOD-069, Found and blocked two one inch openings on the back of the awning housing to prevent entry of dirt, debris and nest building insects.
Tiffin Recall 12V526, Part A
MOD-070-A, Modification to the extended coach flooring to allow this Recall modification to be performed.
Tiffin Recall 12V526, Part B
MOD-070-B, Modification of the support bracket and installation of the recall heat shield.
Engine Coolant Shut-Off Valves
MOD-071, Installation of four additional shut-off valves in addition to the two OEM shut-off valves installed by Tiffin, six valves to control the three engine coolant heater hose circuits, DASH, DEF and AQUA-HOT
Insulating the Aqua-Hot's Dash Heater Tubing
MOD-072, Installation of self-sealing insulation on the Aqua-Hot's dash heat exchanger's tubing.
Whirlpool Washer Drain Filter Access
MOD-073, Finding Tiffin made accessing the washer's drain filter a real pain, it was decided a modification was necessary to make future drain filter cleaning easier.
Installation of the Progressive Industries HW50C - Energy Management System
MOD-074, The installation of the EMS-HW50C and the dual remote displays are both covered in this file.
Black & Gray Tank Dump Valve Support
MOD-075, Installation of a piece of aluminum strap to prevent the Black & Gray Dump Valves from moving up or down while dumping the tanks.
Bedroom Bedslide Gasket
MOD-076, Replacement and installation of the rubber gasket under the beds slide to prevent entry of water or sun-light.
90°Water Shut Off Valves for Half Bath and Rear Bath Toilets
MOD-077, After reading where members have delt with toilets where they were unable to control the water flow to the toilet has caused problems I decided to installed shut off valve at each toilet to prevent having a similar problem.
Installation of a Female Hose connection for Draining the Water Tank
MOD-078, I store our coach ready to drive at any moment, because of this the water tank is drained and refilled on a regular basis, installing the female hose connection on the tank drain allows me to hook up a garden hose and drain the water tank into the yard while parked in the garage.
Additional LED Fixtures in the Rear Bathroom
MOD-79, After a rare modification request by Cathey additional LEDs were installed to provide additional lighting for use while applying makeup.
Heat Shield Installed in the Engine Compartment
MOD-080, Reflectix heat shield material applied to areas around the engine and rear of the coach.
TST TPMS Repeater Mounted in Rear Closet
MOD-081, Recently purchased a second TST system from a TRVN member. The second TST system came with the repeater, so I decided to install the repeater as occasionally one or more sensors would drop their signal.
Installation of Closable AC - HP Vents
MOD-082, After being unable to direct more AC to my side of the coach, I decided to install rotational/closable vents throughout the coach.
Lower Rear Ladder Storage
MOD-083, Somewhere in the past a TRVN member showed how he had mounted his rear ladder, I do not remember the member's name. So whoever you are THANKS for the great idea.
Water Proofing the Docking Light Assemblies
MOD-084, Returning from a recent trip where we had driven in the rain for several days, arrived home to find moisture in a couple of docking light assemblies.
Trimmed Top of Bathroom Door
MOD-085, The design and mounting of our hallway bathroom door prevented most if not all air flow into the bathroom, thus making heating or cooling the bathroom a problem.
Generator Start-Stop Switch Cover
MOD-086, Generator Start/Stop Protective Switch Cover designed and installed to prevent animals from depressing the generators start switch when climbing on the generator.
Electrical Panel Vents
MOD-087, Our electrical panel is located in the closet on the floor exposing the electrical panel to all of the exhaust systems heat radiating up thru the floor. If the generator is running to provide power for the A/C's the heat from the engine's exhaust may cause the A/C circuit breakers to trip, this ventilation modification aids in cooling the area.
Stacked Dryer Filter & Vent Cleaning
MOD-088, Decided to install a modification to allow checking on the dryer's hose and vent, making sure any lint getting past the filter is not being prevented from exhausing thru the dryer vent hose and coach outside vent opening.
Safe Place
MOD-089, After making the # 88 modification, a nice cavity was exposed. I decided to build and install a hidden box to store/hide items we may not desire to leave exposed while traveling.
AC Condensate Drain Collector
MOD-090, This is an effort to consolidate the condensate from three AC drains into one collector thus making collection of condensate water into a small garbage can placed under the single drain easier.
"Coach Step" Motor Bolts
MOD-091, Simple modification to add lock washers and nuts to the three motor bolts on the "Coach Step" brand of entry steps.
Solar Panel Pivot Brackets
MOD-092, Modifiction to allow cleaning of the fiberglass roof under the solar panels.
Sewer Hose Storage
MOD-093, Other owners have installed different version of a sewer hose storage most using the same materials, I've decided to mount my storage in a different way.
Closet Shoes Organizers
MOD-094, Modification to add shoe organizers to make the closet neater and easier to locate shoes.
Trimark Keyless Entry Antenna Extension
MOD-095, The modification extends the range for all four key fob operations.
Coach Air Supply 90° Shut Off Valve
MOD-096, Modification to make connecting a air hose to the front Customer Air Manifold to pump up tires easy to do.
USB Charger
MOD-097, Modification to add four USB charging ports in the cockpit. Two USB charger ports near the co-pilot's chair and two USB charger ports near the driver's chair.
Door Step Mud Flap
MOD-098, Modification to install a Mud Flap to prevent dirt, mud and debris from being thrown onto the coach steps while driving in the rain.
Coolant Hose Replacement
MOD-099, Modification to replace the OEM installed fuel/vapor hoses with coolant hoses designed for use in the coolant system.
Air Filter Mounting Bracket Modification
MOD-100, Ater observing the fabric air intake hose pushed up against and rubbing on the metal of the closet wall, I decided to install stud nuts to push the air filter mounting bracket out about 1 3/4", that distance will allow room to prevent more damage to the hose.
Interior and Exterior Step Lighting
MOD-101, This modification allows the inside and outside step lighting to be controlled by either of two actions. Turning ON the "Floor Lights" will turn on ALL interior and exterior step lighting, also the act of opening the door will turn the same lights ON.
Wall Mounted Toilet Flush Switch
MOD-102, After replacing the toilet mounted flush switch three times in three years, It was decided to install a different type of Add Water/Flush switch, The style of switch chosen is less likely to have the same problems found with the OEM switch.
Rear Closet Wall Safe Installation
MOD-103, This modification covers the installation of a new wall safe in the rear closet, plus installation of additional shelf supports for the hanging clothes rod.
Replacing the Mini-State OTA Antenna Wired Remote with a Wireless Remote
MOD-104, Tired of getting up to reach into the overhead cabinet to access the OTA antenna wired remote, the wired remote control system was replaced with a wireless remote control system.
New Driving Lights
MOD-105, The OEM installed Driving Lights kept leaking water into the glass envelope when driving in the rain, this modification was to improve the lighting and also eliminate a continuing maintenance problem .
Waytek Auxilary Battery Switch (ABS-200)v1
MOD-106, After several years of rebuilding and replacing the OEM installed "Charging Solenoid" this modification was to install an electronic switch to prevent arcing of the contacts of the OEM White - Rogers mechanical solenoid.
NTSHA Recall 14V 271
MOD-107, This modification is to install a 1 Amp fuse and fuse holder in the LED clearance lights, one fuse holder and one 1 Amp fuse in the front clearance light circuit and one fuse holder and 1 Amp fuse in the rear clearance light circuit.
Windshield Shade Pillar Change
MOD-108, This modification is to remove the open gap on the passenger side of the windshield shades when the shades are closed.
Installation of a Fireplace
MOD-109, This modification removed the lower portion of the pantry located under the mid-coach TV. In the place of the pantry a fireplace was installed.
Hot Water By-Pass for the Shower
MOD-110, Hearing a scream about COLD water from the shower brought me running, I decided to shorten the length of the HOT water piping between the Aqua-Hot and the mixing valve in the shower. Shortening the length of the HOT water supply line by more than 60% should supply HOT water to the shower QUICKER.
OTD Awning LED Lighting Installation
MOD-111, This modification is my attempt to keep up with new options Tiffin is installing on their coaches.
Installation of Passenger Side Wet Bay Door Hinges
MOD-112, This modification allows me quick access to the passenger side of the wet bay tanks, it also provides me with several cubic feet of dry heated storage.
PS Wet Bay Storage
MOD-113, Not one to waste anything, I decided to install a shelf making an additional 2 plus cubic feet of storage in the passenger side Wet Bay tank area.
Mud Skirts
MOD-114, In an attempt to prevent basement compartments and the engine compartment from getting wet and dirty when driving in the rain, longer and wider mud skirts were made and installed.
Bed Platform Modification
MOD-115, This modification was to make working around the bed platform safer and less likely for anyone to bump into sharp corners.
Air Filter Canister Support
MOD-116-R1, Revision to the modification to add support under the air filter on our PROTOTYPE Powerglide chassis, this revision replaces the OEM air Filter canister mount.
Half Bath Wall Anchor
MOD-117, Modification to fabricate and install a better floor to wall anchor for the coaches half bathroom wall.
Basement Aqua-Hot Thermostat Relocation
MOD-118, This modification moves the Aqua-Hot's basement thermostat and thermocouple to the DS wet bay compartment.
Dash Heater Outside Air Vent
MOD-119, Modification semi-permanently closes off the dash outside heater air vent.
Cutoff Valves for the Aqua-Hot Fuel Filter
MOD-120, Installation of two fuel filter cut off valves to aid in fuel filter replacement.
Generator Coolant Draining
MOD-121, What was required on our coach to drain, flush and refill the 10KW Generators Coolant.
Dash Heater Hose Insulation
MOD-122, A quick modification to add additional heat to the dash heating system by preventing heat loss by heater hoses exposed to the cold.
Under Coach LED Lighting
MOD-123, A cheap and quick method to illuminate the under side of the coach along with fifteen or more feet to each side.
Installation of a Amp-L-Start Battery Charger
MOD-124, After five years our OEM Battery Minder quit maintaining our chassis batteries after one of the chassis batteries went bad.
Modification to prevent the Coach Step Shoulder Bolt from breaking
MOD-125, The shoulder bolt was removed, cleaned, a Zerk Fitting was installed allowing lubrication of the shoulder bolt and its mount.
Engine Brake Rocker Switch replaced with Paddle Switch making the switch easier to locate.
MOD-126, Replaced OEM Rocker type switch with a Paddle type switch, to make selection easier.
Replaced OEM over the air MANUAL antenna with a AUTOMATIC OTA antenna
MOD-127r1, Winegard Rayzar Automatic Over-The-Air antenna replaced Manual operation Over-The-Air antenna.
Laminate Flooring in the Bedroom
MOD-128, Tired of old carpet in the bedroom so we replaced the carpet with a heavy duty laminate flooring.