Vmac VR70 Installation Manual
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Vmac VR70 Installation Manual

Underhood air compressor
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V R 7 0 U N D E R H O O D
A I R C O MP R E S S O R
I N S T A L L A T I O N MA N U A L
S y s t e m V 9 0 0 0 8 6
2 0 0 5 - 2 0 0 7 I n t e r n a t i o n a l 4 3 0 0 - 4 4 0 0
D T 4 6 6 D i e s e l
w w w . v ma c a i r . c o m

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Summary of Contents for Vmac VR70

  • Page 1 V R 7 0 U N D E R H O O D A I R C O MP R E S S O R I N S T A L L A T I O N MA N U A L S y s t e m V 9 0 0 0 8 6 2 0 0 5 - 2 0 0 7 I n t e r n a t i o n a l 4 3 0 0 - 4 4 0 0 D T 4 6 6 D i e s e l...

  • Page 3: Table Of Contents

    5.2 After Starting the Engine Checklist........25 5.3 Setup, Performance Testing and Adjustments....28 5.4 System Identification and Warnings........29 5.5 Auxiliary Air Receiver ............30 Accessory Products from VMAC ..........31 VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Fax: 1-250-740-3201...
  • Page 4 If you have difficulty with the installation, contact VMAC. 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.

  • Page 5: General Information

    Measure the hose shortfall and order a Hose Extender Kit. The following table shows the color code used by VMAC to identify hose diameters. Hose Diameter Colour-Coded Label...

  • Page 6: Part 1: Preparing For Installation

    Replace the OEM bolts. □ Remove the fan (left hand thread). □ If the truck has a fan shroud mounted to the engine, remove it along with all mounting brackets. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Fax: 1-250-740-3201...
  • Page 7 (Figure 1.2): • one with a small L-bracket for the coolant fill hose • one directly above • two below and inboard Remove bolts from these locations Figure 1.2 VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Fax: 1-250-740-3201...
  • Page 8 Remove and discard the six OEM bolts from the crank pulley. Clean the front surface of the pulley and install the compressor pulley in front of the OEM pulley using the M10 x 40 bolts and washers VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Fax: 1-250-740-3201...

  • Page 9: Part 2: Installing The Tank

    M10 x 35 bolts, washers and nuts. Mount brackets Driver’s side frame rail P-clips and 5/16” bolts C-clamps Figure 2.1 VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Fax: 1-250-740-3201...
  • Page 10 Tank mount bracket Figure 2.2 □ Remove the pinch bolts from the two C-clamps, spread them slightly and slide them over the tank. Install the pinch bolts but do not tighten. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Fax: 1-250-740-3201...

  • Page 11: Connecting The Hoses

    □ Pour some compressor oil into the filter, lubricate the gasket and install the filter. Tighten 1/2-3/4 turn after the gasket contacts the base. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Fax: 1-250-740-3201...

  • Page 12: Part 3: Installing The Cooler, Bracket And Compressor

    Install the short piece of hose (cut from the end of the lower radiator hose) on the passenger side radiator fitting, then insert the steel 90 degree elbow into this hose and angle it upwards (Figure 3.1). VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Fax: 1-250-740-3201...
  • Page 13 (Figure 3.1). Coolant tube To thermostat Bracket Reducer hose To radiator 3-1/2” piece cut from OEM hose Elbow Figure 3.1 VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Fax: 1-250-740-3201...

  • Page 14: Installing The Bracket And Compressor

    If the timing cover has a heat shield, insert the thinnest spacer between the timing cover and the heat shield. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Fax: 1-250-740-3201...
  • Page 15 (you will need a mirror to check the fit). Timing cover Delivery pump mounting position Main compressor bracket Rear support bracket Figure 3.3 VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Fax: 1-250-740-3201...
  • Page 16 Correct as necessary by moving the compressor, then torque the compressor bolts to specifications. □ Install the compressor belt (Figure 3.4). Figure 3.4 VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Fax: 1-250-740-3201...

  • Page 17: Connecting The Hoses

    3.4 Adding Oil to the System You must use VMAC compressor oil in this system. Failure to use this special oil will result in damage to the compressor and will void your warranty.

  • Page 18: Completing The Installation

    Install the coolant expansion bottle to the front of the radiator and secure the coolant fill hose under the engine using ties. □ Fill the cooling system to manufacturer’s specifications. □ Install the front wheel mud shields. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Fax: 1-250-740-3201...

  • Page 19: Part 4: Installing The Control Components

    Mount the throttle box under the dash near the accelerator pedal using nylon ties. Position it so that the adjusting screws are accessible. Avoid mounting it near heating ducts. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Fax: 1-250-740-3201...
  • Page 20 Automatic transmissions with Third Generation Controls and Manual Transmissions VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Fax: 1-250-740-3201...
  • Page 21 Automatic Transmission with FOURTH generation controls VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Fax: 1-250-740-3201...

  • Page 22: Connecting The Wiring

    Route the long blue wire the driver’s side of the transmission and solder it to the pink wire labeled “L17E” at pin “G” of the connector at the transmission (Figure 4.2). VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Fax: 1-250-740-3201...
  • Page 23 145. Temporary connect the battery and probe wire 145. With the engine running, check for continuity to ground in Park and Neutral and an open in all other gears. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Fax: 1-250-740-3201...
  • Page 24 Attach the “Park Brake” wire from the interface connector to the park brake interface wire. Black “PARK BRAKE” wire from interface connector OEM wire harness Park brake interface wire OEM park brake switch wire Figure 4.3 VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Fax: 1-250-740-3201...
  • Page 25 Attach the wire from the other terminal on the pressure switch to a good ground. Connect to black “PARK BRAKE” wire from interface connector Tee fitting Pressure switch Jumper wire Ground wire Figure 4.4 VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Fax: 1-250-740-3201...

  • Page 26: Completing The Wiring

    Check all wiring to ensure that it will not contact any hot or moving components and will not interfere with the operation of the truck. Secure all wiring with nylon ties and loom as required. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Fax: 1-250-740-3201...

  • Page 27: Part 5: Finishing The Installation

    LED on the control box should be off. The engine will drop to idle speed. □ Switch the control box “OFF” and apply the parking brake. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Fax: 1-250-740-3201...
  • Page 28 Switch the control box “OFF” and apply the parking brake. □ Shift the transmission into gear. Depress the brake pedal and place the control box switch in the “ON” position. The green LED VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Fax: 1-250-740-3201...
  • Page 29 Check the coolant after the engine reaches operating temperature. □ Check the compressor oil level after the engine has been shut down and the oil level has had time to stabilize. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Fax: 1-250-740-3201...

  • Page 30: Setup, Performance Testing And Adjustments

    9. Once the system pressure is at maximum, slowly open the ball valve on the test tool until the pressure on the gauge begins to drop. Engine speed should start to ramp-up when air pressure drops to approximately 140 PSI. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Fax: 1-250-740-3201...

  • Page 31: System Identification And Warnings

    The System Identification Number Plate must be attached to the vehicle firewall at the time of installation (Figure 5.2). This plate provides information which allows VMAC to assist in customer inquiries and the ordering of parts. Mark and drill two 7/64 inch holes, then secure the plate under the hood near the driver’s door with self-...

  • Page 32: Auxiliary Air Receiver

    The line from the VMAC tank to the auxiliary air receiver must have a one-way check valve installed (part #3600078) to prevent blow back from the auxiliary tank to stop moisture from entering the VMAC tank (Figure 5.4).

  • Page 33: Accessory Products From Vmac

    Accessory Products from VMAC The following accessory products for your VR compressor system are available from VMAC. For more information or to order these products, call 1-800-738-8622. Eliminator Aftercooler Removes up to 80% of moisture from compressed air. Quick installation,...
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  • Page 36 Ma n u f a c t u r e d b y P H 2 5 0 - 7 4 0 - 3 2 0 0 F X 2 5 0 - 7 4 0 - 3 2 0 1 T F 1 - 8 0 0 - 7 3 8 - 8 6 2 2 1 3 3 3 K i p p R o a d , N a n a i mo , B C , V 9 X 1 R 3 C a n a d a w w w .

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