HydraMaster GTXR+ User manual

GTXR+
Owner’s Manual
HydraMaster
11015 47th Avenue West
Mukilteo, Washington 98275
MAN-47281 Rev. C, MAY, 2018
(P/N 000-182-740D)
No part of this manual may be reproduced or used in any form or by any means (i.e. graphic, electronic, photocopying or electronic
retrieval systems) without the express written permission of HydraMaster. Specications and information in this document are
subject to change without prior notice. All rights reserved. © 2015 HydraMaster

i - GTXR + Owner’s Manual
Table of Contents
GENERAL INFORMATION........................................................................... SECTION 1
Major System Components..................................................................... 1-3
Contact Information................................................................................. 1-4
Warnings, Cautions and Notices............................................................. 1-5
Responsibilities ....................................................................................... 1-9
Machine Specications ........................................................................... 1-12
High Altitude Operation ........................................................................... 1-14
Local Water Precautions ......................................................................... 1-14
INSTALLATION INFORMATION................................................................... SECTION 2
Operating the GTXR+ in Hot Weather .................................................... 2-2
Setting Up the GTXR+ ............................................................................ 2-5
Orientation of Fuel Pump ........................................................................ 2-6
CLEANING AND CHEMICALS..................................................................... SECTION 3
Precautions ............................................................................................. 3-1
Preparing the Carpet for Extraction......................................................... 3-2
Rinse and Recover.................................................................................. 3-2
Overwetting............................................................................................. 3-3
Streaking................................................................................................. 3-3
Cleaning Tool Tips................................................................................... 3-4
OPERATING INSTRUCTIONS..................................................................... SECTION 4
Start Up Procedure ................................................................................. 4-3
Shut Down Procedure............................................................................. 4-5
MACHINE MAINTENANCE.......................................................................... SECTION 5
Operational Maintenance........................................................................ 5-2
Overall Machine Maintenance................................................................. 5-4
Engine Maintenance ............................................................................... 5-5
High Pressure Pump Maintenance ......................................................... 5-7
Vacuum System Maintenance ................................................................ 5-16
Descaling Procedure (Required)............................................................. 5-17
Freeze Guarding ..................................................................................... 5-18
WATER AND CHEMICAL SYSTEM ............................................................. SECTION 6
ELECTRICAL SYSTEM................................................................................ SECTION 7
Electrical System Information.................................................................. 7-1

GTXR + Owner’s Manual - ii
SYSTEMS TROUBLESHOOTING ............................................................... SECTION 8
Heating System....................................................................................... 8-2
Chemical System .................................................................................... 8-3
Engine..................................................................................................... 8-4
High Pressure System ............................................................................ 8-8
Vacuum System ...................................................................................... 8-10
ASSEMBLIES AND PARTS LISTS............................................................... SECTION 9
Console Assembly Parts List................................................................... 9-9
Frame Assembly Parts List ..................................................................... 9-11
Blower Assembly Parts List..................................................................... 9-14
Silencer Assembly Parts List................................................................... 9-15
Engine Assembly Parts List..................................................................... 9-17
Pump Assembly Parts List ...................................................................... 9-19
Blower Heat Exchanger Assembly Parts List.......................................... 9-21
Water Box Assembly Parts List ............................................................... 9-23
Dash Assembly Parts List ....................................................................... 9-26
Differential Check Valve Assembly Parts List.......................................... 9-27
By-Pass Valve Assembly Parts List......................................................... 9-29
Hi-PSI Manifold Assembly Parts List....................................................... 9-31
Idler Pulley Assembly Parts List.............................................................. 9-32
Exhaust Assembly Parts List................................................................... 9-33
70 Gallon Universal Recovery Tank (URT) Assembly Parts List............. 9-35
70 Gallon Universal Recovery Tank (URT) Cover Assembly Parts List .. 9-37
Vacuum Relief Assembly Parts List......................................................... 9-38
70 Gallon Fresh Water Tank (FWT) Assembly Parts List ........................ 9-42
Hose Routings......................................................................................... 9-43
HOW TO ORDER PARTS ............................................................................ SECTION 10
Warranty Parts Orders ............................................................................ 10-1
Parts Orders............................................................................................ 10-1
Emergencies ........................................................................................... 10-1
WARRANTY INFORMATION ....................................................................... SECTION 11
Blower .................................................................................................... 11-1
High Pressure Water Pump ................................................................... 11-1
Recovery Tank ....................................................................................... 11-1
Chemical System .................................................................................... 11-1
Control Panel ......................................................................................... 11-1
Vacuum and Solution Hoses .................................................................. 11-2
Cleaning Wand and Tool ......................................................................... 11-2
Water Heating System ............................................................................ 11-2

iii - GTXR + Owner’s Manual
Hard Water Deposits............................................................................... 11-2
Warranty Procedure ................................................................................ 11-2
ACCESSORIES AND CHEMICAL SOLUTIONS.......................................... SECTION 12

GTXR + Owner’s Manual - iv
List of Figures
Figure 1-1. Hard Water Map of Mainland United States............................................ 1-15
Figure 2-1. Location of Roof Vents in Vehicle ..............................................................2-1
Figure 2-2. Recommended Location of GTXR+ in Van ................................................2-3
Figure 2-3. Install Fuel Pump, Outlet Side Up..............................................................2-6
Figure 2-4. Fuel Pump Must Be in Vertical Position .....................................................2-6
Figure 4-1. GTXR+ Upper Dash Assembly ..................................................................4-1
Figure 4-2. GTXR+ Lower Dash Assembly ..................................................................4-2
Figure 4-3. GTXR+ Chemical System Control and Metering .......................................4-4
Figure 5-1. Remove Valve Cap and Valve Assembly ...................................................5-8
Figure 5-2. Inspect Manifold and Old Valves................................................................5-8
Figure 5-3. Replace Center Inlet Check Valve With Modied Check Valve..................5-9
Figure 5-4. Apply Grease and Install Valves.................................................................5-9
Figure 5-5. Replace Valve Capand Torque to 95 ft lbs .................................................5-9
Figure 5-6. Separate Manifold from Crankcase......................................................... 5-10
Figure 5-7. Seal Assemblies May Come Off with Manifold........................................ 5-10
Figure 5-8. Examine Ceramic Plungers..................................................................... 5-10
Figure 5-9. Remove Stainless Steel Plunger Bolt and Ceramic Plunger ...................5-11
Figure 5-10. Install O-ring, Apply Sealant and Slide Plunger over Plunger Guide .....5-11
Figure 5-11. Extract Retainers and Seals.................................................................. 5-12
Figure 5-12. Seal Kit and Insertion Tool for Seal Installation..................................... 5-13
Figure 5-13. Install Seal Assembly Using O-Ring Grease......................................... 5-13
Figure 5-14. Install Retainers into Cavities................................................................ 5-14
Figure 5-15. Press Low Pressure Seal Assembly into Cavity.................................... 5-14
Figure 5-16. Re-install Manifold and Torque Fasteners............................................. 5-15
Figure 5-17. Torque Sequence in “X” Pattern............................................................ 5-15
Figure 5-18. Torque Bolts to 22 ft. lbs........................................................................ 5-15
Figure 5-19. Recirculation Fitting............................................................................... 5-17
Figure 6-1. Flow Diagram - View 1 of 3........................................................................6-3
Figure 6-2. Flow Diagram - View 2 of 3........................................................................6-4
Figure 6-3. Flow Diagram - View 3 of 3........................................................................6-5
Figure 7-1. Electrical Schematic...................................................................................7-2
Figure 7-2. Wiring Diagram - View 1 of 2 .....................................................................7-4
Figure 7-3. Wiring Diagram - View 2 of 2 .....................................................................7-5

v - GTXR + Owner’s Manual
Figure 9-1. Adhesive/Sealant Material Reference ....................................................9-2
Figure 9-2. Console Assembly - View 1 of 6 .............................................................9-3
Figure 9-3. Console Assembly - View 2 of 6 .............................................................9-4
Figure 9-4. Console Assembly - View 3 of 6 .............................................................9-5
Figure 9-5. Console Assembly - View 4 of 6 .............................................................9-6
Figure 9-6. Console Assembly - View 5 of 6 .............................................................9-7
Figure 9-7. Console Assembly - View 6 of 6 .............................................................9-8
Figure 9-8. Frame Assembly - View 1 of 2 ............................................................ 9-10
Figure 9-9. Frame Assembly - View 2 of 2 .............................................................9-11
Figure 9-10. Blower Assembly - View 1 of 2 ............................................................ 9-12
Figure 9-11. Blower Assembly - View 2 of 2 ............................................................ 9-14
Figure 9-12. Silencer Assembly ............................................................................... 9-15
Figure 9-13. Engine Assembly - View 1 of 2 ............................................................ 9-16
Figure 9-14. Engine Assembly - View 2 of 2 ............................................................ 9-17
Figure 9-15. Pump Assembly ................................................................................. 9-18
Figure 9-16. Blower Heat Exchanger Assembly - View 1 of 2 ................................. 9-20
Figure 9-17. Blower Heat Exchanger Assembly - View 2 of 2 ................................. 9-21
Figure 9-18. Water Box Assembly Electrical Panel Assembly - View 1 of 2 ............ 9-22
Figure 9-19. Water Box Assembly Electrical Panel Assembly - View 2 of 2 ............ 9-23
Figure 9-20. Dash Assembly - View 1 of 2.............................................................. 9-24
Figure 9-21. Dash Assembly - View 2 of 2............................................................... 9-25
Figure 9-22. Differential Check Valve Assembly ...................................................... 9-27
Figure 9-23. By-Pass Valve Assembly - View 1 of 2 ................................................ 9-28
Figure 9-24. By-Pass Valve Assembly - View 2 of 2 ................................................ 9-29
Figure 9-25. Hi-PSI Manifold Assembly - View 1 of 2 .............................................. 9-30
Figure 9-26. Hi-PSI Manifold Assembly - View 2 of 2Exhaust Assembly................. 9-31
Figure 9-27. Idler Pulley AssemblyExhaust Manifold Assembly .............................. 9-32
Figure 9-28. Exhaust Diverted Assembly................................................................. 9-33
Figure 9-29. 70 Gallon Universal Recovery Tank (URT) Assembly ......................... 9-34
Figure 9-30. 70 Gallon Universal Recovery Tank (URT) Cover Assembly............... 9-36
Figure 9-31. Vacuum Relief Valve Assembly ........................................................... 9-38
Figure 9-32. 70 Gallon Fresh Water Tank (FWT) Assembly - View 1 of 2 ............... 9-40
Figure 9-33. 70 Gallon Fresh Water Tank (FWT) Assembly - View 2 of 2 ............... 9-41

1-1: General Information
1 - General Information
The GTXR + is the latest multi surface cleaning/water recovery system from HydraMaster,
featuring a 23 HP air-cooled engine and the dual oil bath Tuthill Dominator 4005 Tri-lobe
Blower.
Standard equipment for the GTXR + include a 70 gallon recovery tank, 70 gallon
rotomolded fresh water tank (FWT), Evolution Truckmount Wand, and a 5 gallon
chemical jug.
Other options include:
• a 100 gallon recovery tank
• a recovery tank automatic pump
out system (Automatic Water Dump
System, or AWDS)
• a Thru Floor Exhaust Kit
• Hydra Cradle Fresh Water Tank
and Hose Reels
• RX-20 Rotary Extraction Wand

General Information: 1-2
This Owner’s Manual contains installation and operation instructions as well as information
required for proper maintenance, adjustment and repair of the GTXR +. Component
troubleshooting guides have also been included for your convenience.
It is the purpose of this manual to help you properly understand, maintain and service
your GTXR +. Follow the directions carefully and you will be rewarded with years of
protable, trouble-free operation.
It is imperative that no section of this manual be overlooked when preparing for operation
of the GTXR +. Please read the manual to familiarize yourself with the operation of your
GTXR +, paying special attention to all Warnings and Cautions.
This section of the manual contains the following information:
Major System Components
Contact Information
Warnings, Cautions and Notices
Responsibilities
Machine Specications
High Altitude Operation
Local Water Precautions
Photographs and illustrations included in this document can represent optional
equipment as well as standard equipment.

1-3: General Information
MAJOR SYSTEM COMPONENTS
ENGINE
SILENCER
WATER BOX
PUMP
HEAT EXCHANGER
BLOWER HEAT EXCHANGER

General Information: 1-4
CONTACT INFORMATION
If you have any questions regarding the operation, maintenance or repair of this machine,
please contact your local distributor.
To nd a local distributor, please visit our website at
http://hydramaster.com/HowToBuy/DealerLocator.aspx
If your question cannot be resolved by your distributor or by the information within this
manual, you may contact HydraMaster direct using the following phone numbers.
HOURS TELEPHONE NUMBERS E-MAIL ADDRESSES
Monday-Friday
7:00 a.m. to 5:00 p.m.
Pacic Time
Technical Support
[phone]
FAX : [phone]
Technical Support
[e-mail]
Customer Service/Parts
[phone]
FAX : [phone]
Customer Service/Parts
[e-mail]
When calling your distributor, be sure to reference the serial number and date of purchase.
FOR YOUR REFERENCE:
Serial No. ___________________________________________________________
Date of Purchase: _____________________________________________________
Purchased From (Distributor): ___________________________________________

1-5: General Information
WARNINGS, CAUTIONS AND NOTICES
HydraMaster uses this WARNING symbol throughout the manual to warn of
possible injury or death.
This CAUTION symbol is used to warn of possible equipment damage.
This NOTICE symbol indicates that federal or state regulatory laws may apply,
and also emphasizes supplemental information.

General Information: 1-6
Warnings and Cautions specic to the GTXR + include the following:
During the operation of the truckmount many components are in motion. Never
touch any part of the truckmount that is in motion. Serious injury may result.
During the operation of the truckmount many surfaces will become extremely hot.
Never touch hot surfaces. Serious injury may result.
The operation of this truckmount can produce noise levels exceeding 85 decibels
to a distance of 10 ft. The Occupational Safety and Health Administration (OSHA)
recommends the use of hearing protective equipment if a person is exposed
to an average of 85 decibels over an 8-hour period. Check with local and state
agencies concerning hearing conservation rules.
During the operation of the truckmount carbon monoxide and other toxic fumes
are produced. Position the vehicle so that any fumes produced will be directed
away from inhabited areas and any points of building entry (doors, windows, air
conditioning units, fans, etc.). Do not occupy the vehicle while the truckmount is
in operation. Serious injury may result.
During the operation of the truckmount, chemicals known to the State of California
to cause cancer, birth defects and other reproductive harm are produced by the
engine exhaust.
Never operate the truckmount with a portable gas container inside the vehicle.
Doing so will increase the risk of re and explosion. Serious injury or death may
result.
Transporting a vented fuel container that presently contains, or has ever contained
in the past, a ammable liquid is strictly forbidden by HydraMaster and by federal
and state regulations. Doing so will increase the risk of re and explosion. Serious
injury or death may result.

1-7: General Information
Never smoke in or around the truckmount. Doing so will increase the risk of re
and explosion. Serious injury or death may result.
During the operation of the truckmount the exhaust system will become extremely
hot. Keep all ammable materials away from the truckmount exhaust system.
Failure to do so will increase the risk of re and explosion. Serious property
damage may result.
Never operate the truckmount when the vehicle is tilted more than 10 degrees
in any direction. Doing so will result in improper lubrication of the internal
components, and will increase the risk of serious component or engine damage.
Never perform cleaning operations when the truckmount engine is running at the
IDLE throttle position. Failure to do so will increase the risk of serious component
or engine damage.
Never operate the truckmount with the vehicle doors closed. Doing so results in
extremely high temperatures inside the vehicle and will lead to serious component
or engine damage.
Never use concentrated acids or solvents (including d-limonene) in the truckmount
water system or chemical system. Use of these products will cause serious
component damage.
Never operate the truckmount with a water hardness reading measuring 3.0
grains per gallon or higher. Using reading than 3.0 grains per gallon will cause
scale to build up inside the truckmount water system. Scale build up causes
serious component damage. Test all water prior to use and use water softening
equipment if necessary.

General Information: 1-8
Never allow water to freeze inside the truckmount. Serious component damage
will occur. Perform all freeze guarding procedures outlined in this digital Owner’s
Manual.
Many vehicles have critical components mounted directly below the oor that
can easily be damaged. Before drilling holes in the oor of the vehicle inspect
the underside of the vehicle for critical components. Failure to do so may result
in damage to the vehicle.
Use of the vacuum recovery system when stripping or otherwise removing wax
from oors is specically excluded as an approved use of the truckmount. Failure
to follow this exclusion may lead to component failure and will invalidate your
warranty.
Use of the vacuum recovery system for “dry cleaning”, without corresponding
solution application (i.e. duct cleaning), is specically excluded as an approved
use of the truckmount. Failure to follow this exclusion may lead to component
failure and will invalidate your warranty.
If concentrated acids or solvents are used to pre-treat surfaces before power
washing, do not recover them through the vacuum system. Failure to follow this
exclusion may lead to component failure and will invalidate your warranty.

1-9: General Information
RESPONSIBILITIES
Purchaser’s Responsibilities
• Prior to purchasing a van, ensure that the payload is suitable for all of the equipment
that will be installed and transported. This includes and is not limited to: the truckmount,
recovery tanks, fresh water tanks and any other on-board water hose reels, hoses,
cleaning tools, chemicals and drying equipment. Payload capacity information is
available through the auto dealer, the manufacturer’s web site, and is also located on
the door pillar of the driver’s side door.
• Purchase a heavy duty Group 24 (500+ CC Amps) battery for this truckmount. This is
normally available from the installation dealer.
• Prior to dropping your van off at the distributor for the truckmount to be installed, have
a spray-on bed liner applied to the oor such as Rhino Lining® or Line-X®.
Plywood and carpet are not recommended.
• Prior to operating the truckmount, read this manual in its entirety and familiarize
yourself with the information contained here. Special attention should be paid to all
Warnings and Cautions.
• The distributor is responsible for the correct installation of the truckmount. The
distributor is also responsible to train you in the correct and proper operation and
maintenance of the truckmount.
Any modication of the truckmount may void the warranty.

General Information: 1-10
Distributor’s Responsibility
Acceptance of Shipment
Before accepting the truckmount, check the following:
1. The truckmount should be free from any damage during shipping. Do not sign the
delivery receipt until you have closely inspected the truckmount and noted any
damage on the delivery receipt. Hidden damage may be present even if the box
looks okay. It is recommended that the box be opened before you sign for the
shipment.
2. Check the packing list and verify that all items are accounted for.
Installation Responsibilities
• Ensure proper payload capacity. It is the distributor’s responsibility to verify that the
equipment package does not exceed the vehicle capacity.
• Ensure installation of a safe fuel tap system and through-oor ttings as provided by
HydraMaster.
• Ensure proper placement of the truckmount, recovery tank, fresh water tank, and
accessories in the vehicle, and check that they are secured with bolts and back up
plates. The distributor should verify that the owner is in agreement with the layout.
• Ensure proper connection of the fuel lines.
• Ensure proper connection and installation of the battery. Verify that the battery is in
accordance with HydraMaster’s recommendation.
• Check the pump, vacuum blower and engine oil levels prior to starting the truckmount.
• Start and run the truckmount and check that all systems function properly.
• Test all hoses, wands and other accessories for correct operation.
• Ensure timely return of the document package.

1-11: General Information
Training
The distributor should provide a thorough review of the operation manual with the
purchaser along with instruction and familiarization in:
1. How all the truckmount’s systems function.
2. All safety precautions and their importance.
3. How to correctly start and shut down the truckmount.
4. How to correctly clean with the truckmount.
5. Where and how often to check and change component oil levels.
6. Freezing damage and how to avoid it. This includes explaining proper freeze
guarding procedures.
7. How to do basic troubleshooting of the truckmount.
8. Hard water damage and how to avoid it. This includes how to determine if hard
water exists in your area and the installation and use of water softening systems.
9. The truckmount’s warranty and warranty procedures.

General Information: 1-12
MACHINE SPECIFICATIONS
Frame Dimensions 24”W x 31”H x 36”D
Weight 563 lbs
Engine 23HP Briggs and Stratton air-
cooled
Pressurized Oil System Engine Oil:
5W-30 Synthetic
Capacity Approx. 1 1/2 quarts, or
48 oz (when changing
oil and lter)
Engine rpm 3,000 rpm
Fuel Consumption 1.1 gph
Ignition Electric Keystart
Vacuum Blower -
Tuthill 4005
Oil Type Blower Oil:
Pneulube
Gear End Capacity Approx. 5.8 oz
Drive End Capacity Approx. 4.7 oz
Blower rpm 3,000 rpm
Water Pump 3.5 gpm Plunger Pump,
Electric Clutch Control
Oil Type
30W non-detergent
Drive System Direct-drive Hayes 40-series
Coupler
Engine Exhaust Diverter Automated Diverter Control
(ADC) Temperature Control
Operating Pressure 0 - 1,000 psi
Chemical System Stainless Steel Last-Step
Chemical Injection,
Meter Controlled
Heating System Finned Tube Heat Exchanger

1-13: General Information
Standard Equipment Runtime Hour Meter
Chemical Flow Meter
(0-10 Gph)
Chemical Flow Control Valve
Vacuum Gauge (0-30" Hg)
Solution Pressure Gauge
(0 - 1,500 Psi)
Solution Pressure Adjustment
Pre-Wired Pump-In Switch
Pre-Wired Pump Out Switch
Fresh Water Inlet
Water System Drain Valve
Diagnostic/Status Lights
Engine Choke
Engine Throttle
Electrical Circuit Protection
(Fuse Protected)
Solution Temperature Control
Selector
Fresh Water Tank (FWT) 70 Gallon Rotomold
Universal Recovery Tank (URT) 70 Gallon URT
Wand, 1.5” x 13” EVO
Optional Equipment Recovery Tank pump out Automatic Wastetank
Disposal System
(AWDS)
Recovery Tank 100 Gallon URT
Hoses
Wand, 2.0”
Thru Floor Kit
Spare Parts - Engine HM part number
Oil Filter 000-049-014
Fuel Filter 000-049-258
Foam Pre-Air Filter 000-049-053
Air Filter 000-049-012
Exhaust Gasket 000-057-082
Spark Plug 000-106-016

General Information: 1-14
HIGH ALTITUDE OPERATION
Elevation plays a key role in how the truckmount will operate. Operation at high altitude
(above 5,000 ft [1,524 m]) may require a high-altitude carburetor jet. Use of this jet at high
altitude will improve power, reduce fuel consumption and help reduce excessive carbon
build-up in the exhaust and heat exchanger systems.
Contact the local Briggs and Stratton dealer or HydraMaster to obtain
the proper jet size. Find your local Briggs and Stratton dealer at
http://www.vanguardengines.com/where-to-buy/dealer-locator/
LOCAL WATER PRECAUTIONS
The quality of water varies greatly. Many areas have an excess of minerals in the water
which results in what is commonly called “hard water.” These minerals tend to adhere to
the insides of heater coils and other parts of the machines causing damage and a loss of
cleaning effectiveness. This inuences the reliability and efciency of equipment in direct
proportion to the level of hardness.
Hard Water Advisory
HydraMaster recognizes that any hard water deposits which might occur within the water
system of our truckmounts is a serious problem. The precision technology of truckmount
heat exchanger systems is intolerant of any foreign material. Hard water deposits will
ultimately decrease the performance of the system and are expected to seriously lower
the reliability of the machine.
To validate a machine’s warranty, HydraMaster requires that all machines operating in
designated “Hard Water Areas” (3.0 grains or more per gallon [3.79 litres]) be tted with
a water softening system, or a properly installed magnetic-type descaler must be used
and maintained. Periodic descaling or acid-rinsing alone is not adequate in these areas.
HydraMaster does not recommend any particular type or brand; however, the relative
effectiveness of some types of magnetic descalers or softeners may require additional
periodic use of descaling agents.
HydraMaster also recommends, in the strongest possible terms, that machines in all
areas be tted with a water softening system for improved operation and reliability.
Failure to take appropriate measures to prevent scale build up can result in
system failure and loss of warranty on affected parts.