Vmac VR70 Installation Manual
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Vmac VR70 Installation Manual

Underhood air compressor
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VR70 UNDERHOOD
AIR COMPRESSOR
INSTALLATION MANUAL
System V900127
2012 - 2015 GM 2500-3500 Pickup
6.0L Vortec Gas

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Summary of Contents for Vmac VR70

  • Page 1 VR70 UNDERHOOD AIR COMPRESSOR INSTALLATION MANUAL System V900127 2012 - 2015 GM 2500-3500 Pickup 6.0L Vortec Gas...

  • Page 3: Table Of Contents

    Part 10: Setup, Performance Testing and Adjustments ..43 Part 11: Optional Accessory Installation ......... 44 Part 12: Auxiliary Air Receiver ........... 45 Part 13: Accessory Products ............46 VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 4: Installation Manual For Vmac System V900127

    This symbol is used to call your attention to additional instructions or special emphasis on a specific procedure. The information in this manual is intended for certified VMAC installers who have been trained in installation procedures and for people with mechanical trade certification who have the tools and equipment to properly and safely perform the installation.
  • Page 5 VMAC. The VMAC warranty form is included in the documentation package. This warranty form must be completed and mailed or faxed to VMAC at the time of installation for any subsequent warranty claim to be considered valid.

  • Page 6: General Information

    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 our compressor oil. Use of hoses other than those supplied or recommended by VMAC may cause compressor damage and may void your warranty.

  • Page 7: Part 1: Warranty And System Id

    Complete the warranty form . The VMAC warranty form is located at the back of this manual. This warranty form must be completed and mailed or faxed to VMAC at the time of installation for any subsequent warranty claim to be considered valid. This form can also be found online at: http://vmacair.com/support/warranty/...
  • Page 8 (Figure 1.3) Figure 1.3 – Service label To order parts, contact your VMAC dealer. Your dealer will ask for the VMAC serial number, part number, description and quantity. To locate your nearest dealer, call 1-888-241-2289 or visit www.vmacair.com VMAC –...

  • Page 9: Part 2: Preparing For Installation

    X1 (smallest connector at the top of ECM) and X2 (larger connector beside X1) Do not use a test light to probe for power on vehicle circuits, the increased current draw of the test light may damage components VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 10 The correct wire will show 0 Volts in PARK or NEUTRAL and 12 Volts in all other gear selector positions. □ Turn the ignition switch off. Mark the correct wire for electrical connections later in the installation process. VMAC – Truck Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 11 □ Disconnect the battery terminals. □ Remove the air filter box, air intake tube and resonator box. □ Remove the engine fan (right hand thread). VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 12 If equipped, remove the OEM wire harness securing bracket from the top of the frame so that it can be moved out of the way when mounting the tank. VMAC – Truck Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 13: Part 3: Installing The Control Components

    Part 3: Installing the Control Components Figure 3.1 – Electrical Schematic VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 14: Installing The Components

    3.2 Connecting the In-Cab Wiring □ Connect the interface wire harness connector to the matching connector from the VMAC control box. □ Disconnect the multi-pin connector from the accelerator pedal and plug it into to the matching connector at the throttle control box then plug the connector from the throttle control box into the accelerator pedal.

  • Page 15: Connecting The Under-Hood Wiring

    (Figure 3.2) Figure 3.2 □ 2012 - 2014 Solder and seal the long blue wire from the VMAC throttle to the orange wire with the black stripe (Figure 3.3) Figure 3.3 □...
  • Page 16 Slide the heat shrink over the soldered joint and shrink with a heat gun. Do not overheat and be sure to protect the other nearby wire bundles with cardboard or sheet metal. (Figure 3.7) Figure 3.7 VMAC – Truck Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 17 Figure 3.8 □ Remove the cover from the fuse panel and route the red wire with the fuse tap/holder to the panel. Refer to Part 7.1 for connection details. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 18: Part 4: Installing The Tank And Hoses

    □ Align the holes, apply Loctite and thread 5/16 x 1/2 inch bolts with flat washers into the bottom hole on each bracket, but do not tighten. VMAC – Truck Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 19 A 90° fitting is required (but not supplied). Tighten it to about the Four o’clock position for testing, then reposition as required for final connections (Figure 4.3) VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 20: Installing The Tank Assembly

    (Figure 4.4) An additional 17.5” cable strap (2200169) and bar strap 2200111) is provided to accommodate any frame size variation. VMAC – Truck Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 21 Insert the threaded end of the cable through the one of the lower holes on the tank strap flat bars. Select the appropriate holes that best match the frame of the truck. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 22 □ Thread a second nut on each cable clamp and lock the two nuts together using two wrenches. VMAC – Truck Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 23: Part 5: Installing The Cooler, Bracket And Compressor

    Liquid Loctite 242 must be used to achieve correct torque on the crankshaft bolt as it functions as a thread lubricant, as well as a locking compound. Solid or Stick Loctite cannot be used. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 24 4) Turn an additional 125 degrees • Angle can be measured with GM specialty tool (J 45059 : Angle Meter) □ Remove the OEM flywheel-locking tool and install the starter motor. VMAC – Truck Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 25: Modifying The Radiator Hoses

    Connect the modified 6” long lower radiator hose to the radiator. Do not use air tools or electric impact guns to tighten hose clamps, they may over-torque the clamp and cause coolant leaks. Use hand tools only. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 26: Installing The Cooler

    (Figure 5.5) Figure 5.5 □ Adjust OEM bolts and two adjustment bolts on bracket for best fit and alignment of the hoses. Tighten the five bolts. VMAC – Truck Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 27: Installing The Hoses

    (Figure 5.6) Longer 1/2" hose Shorter 1/2" hose Figure 5.6 □ Fasten both ½” hoses using tie straps so that they do not contact any hot or moving parts. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 28: Installing The Main Bracket And Compressor

    Place the main bracket on the front of the driver side cylinder head and install the four OEM M10 bolts from the alternator casting into the same locations on the VMAC bracket. □ Make sure that the bracket sits flat against the engine. If the bracket does not sit flat, remove it and correct the problem.
  • Page 29 Install the alternator on the main bracket using the OEM bolts. The spacers will pull into position as you torque the retaining bolts to specifications. □ Install OEM idler on VMAC bracket. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 30 □ Install the OEM belt, then the VMAC VR belt. Visually check belt alignment to make sure that it is correct. (Figure 5.9) Figure 5.9 □ Install engine fan. VMAC – Truck Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 31: Connecting The Hoses

    □ Connect the 3/16 and 1/4 inch hoses to the matching fittings on the inlet control valve. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 32: Completing The Installation

    Connect the white wire with the bullet connector, the green 4 pin connector and the black 3 pin connector to the matching connections at the compressor. □ Reconnect Battery. VMAC – Truck Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 33: Part 6: Adding Oil To The System

    Part 6: Adding Oil to the System You must use the VMAC supplied and approved compressor oil in this system. Failure to use this oil may result in damage to the compressor and will void your warranty. □ Remove the plug or open the outlet of the tank.

  • Page 34: Part 7: Finishing The Installation

    □ Connect the fuse-tap ensuring the populated fuse in the fuse-tap for the VMAC system is obtaining power from the supply/hot fuse connection. Plug the removed fuse back into the lower empty fuse-tap socket and ensure the supplied 10A fuse is in the upper socket.

  • Page 35: Connecting Switched Power 2014 - 2015

    7.2 Connecting Switched Power 2014 - 2015 The supplied tap fuse cannot be used on 2015 trucks, the VMAC system must be wired in per GM bulletin UI #115C View Bulletin #115C Here Do not use a test light to probe for power on vehicle...
  • Page 36 □ ICEM cover removed (Figure 7.3) Figure 7.3 □ Remove the three nuts securing the module (Figure 7.4) Figure 7.4 VMAC – Truck Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 37 (Figure 7.5) Figure 7.5 □ Once you have the assembly lifted enough, you should be able to access the electrical connectors on the back of it. (Figure 7.6) Figure 7.6 VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 38 Locate the connector on the passenger side of the ICEM, squeeze the two tabs and rotate the locking lever and remove the electrical connector from the ICEM assembly. (Figure 7.7) Figure 7.7 VMAC – Truck Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 39 □ This is the correct connector (Figure 7.8) Figure 7.8 □ Remove the electrical tape and peel back the fabric wire cover, exposing the wire bundle (Figure 7.8) VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 40 (Figure 7.9) PIN 46 Figure 7.9 □ Solder and seal the red wire from the VMAC interface connector to the violet wire with the white stripe. (Figure 7.10) Figure 7.10 □ Slide the heat shrink over the soldered joint and shrink with a heat gun.

  • Page 41: Securing The Wiring

    Secure them with nylon ties. □ Replace the dash panel and the fuse panel cover. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 42: Part 8 Completing And Testing The Installation

    Turn the ignition key “OFF”. If the truck fails the test, check the wiring to make sure that all the connections are correct and secure. If you require additional assistance, contact VMAC technical support at 1-888-241-2289 or 250-740-3200. VMAC – Truck Mounted Air Compressors...

  • Page 43: Part 9: Finishing The Installation

    Start the compressor and let the truck ramp up to 1800 rpm and then drop down to 1000 rpm. Shift the truck into gear. The engine should go to base truck idle (around 700 RPM). VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 44: Final Testing

    Check the coolant level after the engine has been operated. □ Check the compressor oil level after the engine has been shut down and the oil level has had time to stabilize. VMAC – Truck Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 45: Part 10: Setup, Performance Testing And Adjustments

    Figure 10 Install the test tool in the tank outlet fitting. If you are using the VMAC test tool, use the correct orifice fitting (small hole for VR70, large hole for VR150). Make sure that the ball valve is closed.

  • Page 46: Part 11: Optional Accessory Installation

    The use of a receiver tank provides a buffer so that tools may be used immediately upon system startup. • For information on installing a receiver tank see part 12 of this manual. • Receiver tanks are available for purchase through VMAC and include:  Tank  Safety valve ...

  • Page 47: Part 12: Auxiliary Air Receiver

    The line from the VMAC tank to the auxiliary air receiver must have a one-way check valve installed to prevent blow back from the auxiliary tank to stop moisture from entering the VMAC tank. (Figure 12)

  • Page 48: Part 13: Accessory Products

    Part 13: Accessory Products The following accessory products for your VR compressor system are available from VMAC. For more information or to order these products, call 1-888-241-2289. Eliminator Aftercooler Part Number A800070 Removes up to 80% of moisture from compressed air. Quick installation, automatic...

  • Page 49: Vmac - Vehicle Mounted Air Compressors

    VMAC Product Warranty Registration This form must be fully completed and returned to VMAC at the time of installation. Warranty will be void if this form is not received by VMAC within 30 days of installation. VMAC Dealer Information Company Name: ______________________________________...
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