Vmac A700137 User manual

www.vmacair.comwww.vmacair.com
Installation Manual for
VMAC Accessory
A700137
Replacement Regulator Assembly
®

VMAC - Vehicle Mounted Air Compressors
VMAC Technical Support: 888-241-2289
VMAC Knowledge Base: kb.vmacair.com
1
Table of Contents
Safety .........................................................................3
Warranty ......................................................................4
General Information ...........................................................6
Maintenance and Repair Safety................................................8
Installation ....................................................................9

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Additional Application Information
The A700137 Replacement Inlet Regulator Assembly is compatible with select
VMAC inlet regulated systems.
Important Information
The information in this manual is intended for certified VMAC installers who
have been trained in installation and service procedures and/or for anyone with
mechanical trade certification who has the tools and equipment to properly and
safely perform the installation or service. Do not attempt installation or service
without the appropriate mechanical training, knowledge and experience.
Follow all safety precautions. Any fabrication for correct fit in modified vehicles
must follow industry standard “best practices”.
Notice
Copyright © 2020 VMAC Global Technology Inc. All Rights Reserved. These
materials are provided by VMAC for informational purposes only, without
representation or warranty of any kind, and VMAC shall not be liable for errors
or omissions with respect to the materials. The only warranties for VMAC
products and services are those set forth in the express warranty statements
accompanying such products and services, if any, and nothing herein shall be
construed as constituting an additional warranty. Printing or copying of any page
in this document in whole or in part is only permitted for personal use. All other
use, copying or reproduction in both print and electronic form of any part of this
document without the written consent of VMAC is prohibited. The information
contained herein may be changed without prior notice.
Printed in Canada
Registered Trademarks
All trademarks mentioned in this manual are the property of their respective
owners. VMAC’s use of manufacturers’ trademarks in this manual is for
identification of the products only and does not imply any affiliation to, or
endorsement of said companies.
Loctite®, Loctite®242 and Loctite®567 are registered trademarks of Henkel AG &
Company KGaA.
Document: 1900850
Changes and Revisions
Revision Revision Details Revised by
Checked by
Implemented
Eng. Tech. Qual.
Mech. Elec.
CECN 16-004 MSP CJH N/A DSB N/A 13 Jan. 2016
DECN 16-012 MSP CJH N/A DSB N/A 4 Feb 2016
E ECN 20-232 Remove reference to Phillips head screw MSP MRH N/A MSP LPH 17 Nov. 2020

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Safety
Important Safety Notice
The information contained in this manual is based on sound engineering principles,
research, extensive field experience and technical information. Information
is constantly changing with the addition of new models, assemblies, service
techniques and running OEM changes. If a discrepancy is found in this manual,
contact VMAC Technical Support prior to initiating or proceeding with installation,
service or repair. Current information may clarify the issue. Anyone with knowledge
of such discrepancies, who proceeds to perform service and repair, assumes all
risks.
Only proven service procedures are recommended. Anyone who departs from the
specific instructions provided in this manual must first ensure that their safety and
that of others is not being compromised, and that there will be no adverse effects
on the operational safety or performance of the equipment.
VMAC will not be held responsible for any liability, consequential damages, injuries,
loss or damage to individuals or to equipment as a result of the failure of anyone
to properly adhere to the procedures set out in this manual or standard safety
practices.
Safety should be the first consideration when performing any service operations.
If there are any questions concerning the procedures in this manual, or more
information is required, please contact VMAC Technical Support prior to beginning
work.
Safety Messages
This manual contains various warnings, cautions and notices that must be
observed to reduce the risk of personal injury during installation, service or repair
and the possibility that improper installation, service or repair may damage the
equipment or render it unsafe.
This symbol is used to call attention to instructions concerning
personal safety. Watch for this symbol; it points out important
safety precautions, it means, “Attention, become alert! Your personal
safety is involved”. Read the message that follows and be aware
of the possibility of personal injury or death. As it is impossible
to warn of every conceivable hazard, common sense and industry
standard safety practices must be observed.
This symbol is used to call attention to instructions on a specific
procedure that if not followed may damage or reduce the useful life
of the compressor or other equipment.
This symbol is used to call attention to additional instructions or
special emphasis on a specific procedure.

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VMAC Standard Warranty (Limited)
For complete warranty information, including both VMAC Standard
Warranty (Limited) and VMAC Lifetime Warranty (Limited)
requirements, please refer to our current published warranty located
at: www.vmacair.com/warranty
If you do not have access to a computer, please contact us and we
will be happy to send you our warranty.
VMAC’s warranty is subject to change without notice.
VMAC Lifetime Warranty (Limited)
A VMAC Lifetime Limited Warranty is offered
on the base air compressor only and only on
UNDERHOOD, Hydraulic Driven, Transmission
Mounted, Gas and Diesel Engine Driven Air
Compressors, Multifunction Power Systems, and
other products as defined by VMAC, provided
that (i) the purchaser fully completes and submits
a warranty registration form within 3 months
of purchase, or 200 hours of operation, whichever occurs first; (ii) services are
completed in accordance with the Owner’s Manual; (iii) proof of purchase of
applicable service kits are made available to VMAC upon request.
The VMAC Lifetime Warranty is applicable to new products shipped on or after 1
October, 2015.
Warranty Registration
The VMAC warranty registration form is located near the back of this manual. This
warranty registration form must be completed and sent to VMAC at the time of
installation for any subsequent warranty claim to be considered valid.
There are 4 ways the warranty can be registered with VMAC:
www.vmacair.com/warranty
[e-mail]
[phone]
VMAC - Vehicle Mounted Air Compressors
1333 Kipp Road, Nanaimo, BC, Canada V9X 1R3
Warranty

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VMAC Warranty Claim ProcessVMAC Warranty Claim Process
VMAC warranty work must be pre-authorized by VMAC. Claims are
processed via our dealer network. If you are not a VMAC dealer,
please select one to work with via our Dealer Locator:
https://www.vmacair.com/dealer-locator/
1. Communicate with VMAC Technical Support at 1-888-241-2289 or
[e-mail] to help diagnose/troubleshoot the problem prior to repair.
VMAC technical support will require the VMAC System ID, hours on the
compressor and mileage on the vehicle.
2. VMAC will provide direction for repair or replacement of the failed components.
3. If requested, failed parts must be returned to VMAC for evaluation.
4. Dealers may login to the VMAC website to view the "VMAC Labour Time Guide"
(under “Agreements”) to see the allowable warranty labour times.
5. Warranty invoices must include the Service Ticket number, VMAC System ID#,
hours on the compressor, and a detailed description of the work performed.
6. VMAC Warranty does not cover consequential damages, overtime charges,
mileage, travel time, towing/recovery, cleaning or shop supplies.
7. Dealers submit warranty claims on behalf of the Vehicle Owner/End User
affected by the defective part(s). The dealer ensures that all warranty credits
are refunded back to the Vehicle Owner/End User who made the initial warranty
claim.
In order to qualify for Lifetime Warranty (Limited), the completed
warranty registration form must be received by VMAC within 3
months of the buyer receiving the Product(s), or 200 hours of
operation, whichever occurs first.
If the completed warranty registration form has not been received
by VMAC within 3 months of the buyer receiving the Product(s),
or 200 hours of operation, the warranty period will be deemed to
commence 30 days from the date of shipment from VMAC.
Failure to follow the warranty claim process may result in denial of
the warranty claim.
VMAC Product Warranty Policies & Warranty Registration can be found on the
VMAC website (see previous page for URL).

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Optional Equipment Compatibility
While VMAC strives to design systems compatible with optional OEM equipment
(such as running boards), it is impractical to develop systems that accommodate
every OEM and aftermarket option or add-on. Whenever possible, VMAC
endeavors to advise of compatibility issues in the “Additional Application
Information” section of the manual. Even when specific optional equipment is
determined by VMAC to be incompatible, it does not preclude the vehicle upfitter
or end user from modifying the optional equipment to make it compatible with
the installed VMAC system. VMAC does not warranty or accept responsibility or
liability for the fitment, function or safety of any products modified in any way not
expressly outlined in the installation manual.
Before Starting
Read this manual prior to beginning the installation to ensure familiarity with the
components and how they will fit on the vehicle. Identify any variations from the
application list such as vehicle model, engines, or optional equipment (e.g., dual
alternator, active steering assist, etc.).
Hose Information
General Information
VMAC Compressor oil will degrade rubber lined hoses, use only
hoses with an AQP elastomer type liner. Contact VMAC Technical
Support at 1-888-241-2289 for further information.
Only attempt to shorten the supplied hose if there is access to the
appropriate equipment. Do not attempt to cut the hose and splice it
using hose clamps.
Depending on other installed equipment, it might be necessary to move the air/oil
separation tank from its intended location. The hoses used in VMAC compressor
systems have a specific inner liner that is compatible with VMAC compressor oil.
Use of hoses other than those supplied or recommended by VMAC may cause
compressor damage and may void your warranty. Please contact VMAC for
replacement hoses and further information.
Ordering Parts
To order parts, contact a VMAC dealer. The dealer will ask for the VMAC serial
number, part number, description and quantity. Locate the nearest dealer online at
www.vmacair.com/dealer-locator or call 1-877-912-6605.

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Table 1 — Torque Table
Standard Grade 8 National Coarse Thread
Size (in) 1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4
Foot pounds (ft•lb) 918 35 55 80 110 170 280
Newton meter (N•m) 12 24 47 74 108 149 230 379
Standard Grade 8 National Fine Thread
Size (in) 3/8 7/16 1/2 5/8 3/4
Foot pounds (ft•lb) 40 60 90 180 320
Newton meter (N•m) 54 81 122 244 434
Metric Class 10.9
Size (mm) M6 M8 M10 M12 M14 M16
Foot pounds (ft•lb) 4.5 19 41 69 104 174
Newton meter (N•m) 625 55 93 141 236
Special Tools Required
• None
Torque Specifications
All fasteners must be torqued to specifications. Use manufacturers’ torque values
for OEM fasteners.
The torque values supplied in Table 1 are intended for VMAC supplied components,
or for use as a guide in the absence of a torque value provided by an OEM.
Torque values are with Loctite applied unless otherwise specified.
Apply Loctite 242 (blue) to all fasteners (except nylon lock nuts)
unless otherwise stated.

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It is impossible to warn of all the possible hazards that may result
from operating, servicing, or repairing this system.
Wear all appropriate Personal Protective Equipment and follow all
industry standard safety practices.
Confirm that the system is depressurized and has cooled prior to
performing any service work.
Never use flammable solvents to clean any components. If a
flammable solvent has been used, rinse the component thoroughly
with water and dry it before reinstalling it to prevent the possibility
of explosion.
This information is intended for people with mechanical trade
certification who have the tools and equipment to properly and
safely perform the service or repair. Do not attempt to service or
repair this system without the appropriate mechanical training,
knowledge and experience.
Follow all safety precautions and industry standard “best
practices”.
Maintenance and Repair Safety
Safety Check List
☐ Open the ball valve or connect an air tool to the system to ensure all the stored
air is released.
☐ Gently pull up on the ring on the pressure relief valve to confirm the system is
depressurized
Do not use the pressure relief valve as a means of depressurizing
the compressor system. Doing so will prematurely wear the internal
spring or the seat, preventing the valve from maintaining normal
system pressure.
Use only genuine VMAC replacement parts to maintain the system.
Genuine VMAC replacement parts are designed to work with the
high pressure and heat generated by the compressor. Substituting
genuine VMAC replacement parts may void the warranty and could
cause equipment damage, injury, or death.

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Installation
Read the “Maintenance and Repair Safety” section prior to
performing any work on the system (beginning on page 8).
Wear appropriate Personal Protective Equipment and follow all
industry standard safety practices.
Failure to follow these instructions may result in component
damage, injury, or death.
With the exception of the setting bolt (as described in Step 2) and
the “seat” (as described in step 3), do not re-use any components
from the old regulator as they are worn and may cause premature
failure if used with new regulator components.
Figure 1 — Inlet valve and regulator
Setting bolt
Lock nut
Regulator cover
Spring seat
Spring
Diaphragm
Seat
1. Measure how far the setting bolt extends from the existing regulator cover in
the inlet valve. This can be used as a rough guide for setting system pressure in
step 11.
2. Remove the regulator setting bolt and retain it. It will be used in step 13.
3. Remove the regulator cover from the inlet valve.

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5. Remove any burrs from the Inlet threads using a mechanic’s pick (or similar tool)
to prevent galling of the threads when installing the new regulator cover.
6. If the seat is being replaced, apply just enough general purpose grease to the
chamfered side of the seat to hold it in place during the install. Install the new
seat with the chamfered edge of the seat facing into the Inlet and away from
the regulator cover (Figure 2).
7. Ensure that there is no excess grease that will block the center of the seat or
carry over into the air passage in the Inlet.
8. Install the rubber diaphragm into the Inlet with the ball surface of the
diaphragm facing the seat (Figure 2).
9. Install the regulator spring over the brass boss on the diaphragm. Ensure the
brass boss on the diaphragm sits inside the spring.
10. Install the brass spring seat boss into the spring, the ball surface should face
the regulator cover and setting bolt (Figure 2).
Figure 2 — Regulator assembly (P/N: A700137)
Chamfered
side of seat
Ball surface
facing seat
If the seat falls out of the inlet easily, discard it, a new one is
provided in the regulator replacement assembly (P/N: A700137).
If the seat does not fall out of the inlet when tipped, leave it in place
as it will be re-used. Do not try to force or pry the seat out as you
will damage the inlet valve.
4. Invert the inlet valve to remove the regulator components. If the chamfered
seat comes out, discard it as per the note below.

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Figure 3 — Install O-rings and blanking plate
Over tightening the regulator cover may damage rubber diaphragm.
11. Thread the regulator cover onto the inlet and hand tighten until it is in contact
with the rubber diaphragm and tighten an additional 1/8 turn. The innermost
thread on the regulator cover should be flush with the inlet (Figure 3).
12. Install the regulator setting bolt (retained from Step 2) and lock nut. Hand
tighten until spring resistance is felt.
13. Use the measurement taken in Step 1 as a rough measurement prior to the final
pressure adjustment.
Adjusting the Pressure Regulator
Last thread
should be
flush with inlet
The pressure regulator is adjusted to limit maximum air pressure to a safe level.
As air pressure and flow are related, this adjustment is also very important for
optimum performance.
☐ Install the test tool in the tank outlet with the ball valve closed.
☐ Ensure that the oil level is correct and the system is at operating temperature.
☐ Operate the system until it reaches full pressure. Observe the pressure on the
gauge.
☐ Loosen the lock nut on the regulator.
Never adjust the pressure cutout to exceed 175 psi (1205 kPa).
The pressure relief valve on the AOST will activate at 200 psi (1379
kPa) and rapid air loss will occur which may cause component
damage, injury or death.
In applications that require pressures below 150 psi, VMAC
recommends leaving the maximum pressure set at 150 psi and
installing a regulator downstream to regulate pressure to the
desired amount. This will provide optimum performance and
response time when air is demanded.
Prolonged operation above 175 psi / 1205 kPa may damage the
pressure regulator.

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☐ Pressure can be adjusted within a range of 145 psi (999 kPa) – 175 psi (1205 kPa),
dependent upon requirements.
☐ Rotate the setting bolt clockwise to increase pressure, rotate the setting bolt
counterclockwise to decrease pressure (Figure 4).
Figure 4 — Adjusting the pressure regulator
Setting bolt
Lock nut
Bleed hole
Clockwise to
increase pressure
Counterclockwise to
decrease pressure
☐ Tighten the lock nut once adjustments are complete.
☐ Open the ball valve to allow air to flow and the pressure to drop, (engine speed
should increase). Close the valve and observe the pressure to ensure that the
adjustment is correct.

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1333 Kipp Road, Nanaimo, B.C., V9X 1R3 Canada
Manufactured by
®