Vmac VR70 Installation Manual
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Vmac VR70 Installation Manual

Underhood air compressor system 2007 - 2006 gm 2500hd - 3500hd duramax diesel 2010 - 2007 gm 2500hd - 3500hd gmt900 duramax diesel
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See also: Owner's Manual , Installation Manual
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 9 3
2 0 0 7 – 2 0 0 6 G M 2 5 0 0 H D – 3 5 0 0 H D
S y s t e m V 9 0 0 1 0 3
2 0 1 0 – 2 0 0 7 G M 2 5 0 0 H D – 3 5 0 0 H D
G MT 9 0 0 D u r a ma x D i e s e l
w w w . v ma c a i r . c o m
D u r a ma x D i e s e l

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  • 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 9 3 2 0 0 7 –...

  • Page 3: Table Of Contents

    6.1 Before Starting the Engine Checklist........37 6.2 After Starting the Engine Checklist ........38 6.3 Setup, Performance Testing and Adjustments ....39 6.5 Auxiliary Air Receiver ............40 Accessory Products from VMAC ..........41 VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 4: System V900103

    All trademarks used in this manual are the property of the respective copyright holder. The contents of this manual may not be reproduced in any form without the express written permission of VMAC, 1333 Kipp Road, Nanaimo, BC V9X 1R3.

  • Page 5: General Information

    Newton meter (N•m) Special Tools 36 mm 12 point 1/2 inch drive socket for removing the OEM crankshaft bolt crankshaft locking tool (GM #J-44643) or VMAC equivalent (Part #5900010) VMAC crankshaft pin extraction tool (Part #5900076) VMAC – Vehicle Mounted Air Compressors...
  • Page 6 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.

  • 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.
  • Page 8 Figure 1.1 VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 9 Thoroughly clean the selected area before affixing the label (figure 1.2) Figure 1.2 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.

  • Page 10: Part 2: Preparing For Installation

    LIGHT) to determine which wire has 0 Volts in Park/Neutral and 12 Volts in all other gear selector positions with the ignition on. Mark the wire with a piece of tape and turn the ignition off. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 11 □ Start the engine and test for a constant 3 Volts at 600 RPM. If you have a multi-meter that can measure frequency, the reading will equal engine RPM. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 12 Remove the fan and stator together and discard the stator. □ Remove the air intake resonator chamber from the engine. □ Remove the OEM serpentine belt. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 13 Move the pump to one side but do not disconnect the hoses. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 14 □ Install a crankshaft locking tool, remove the crank pulley bolt and remove the crank pulley. If you are using the VMAC tool: put the socket on the nut put the single-pin end of the tool on the front of the pulley with...
  • Page 15 Slide Pinch Bolt OEM Crank Pin Figure 2.3 High-strength crank pin Figure 2.4 VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 16 Thread the M18 x 100 mm center bolt with OEM washer into the crankshaft. Install an engine-locking tool and torque the center bolt to 250 ft-lbs (340 N.m). Position the roll pins here Figure 2.5 VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 17: Part 3: Installing The Control Components

    Part 3: Installing the Control Components V900093 Wiring VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 18 V900103 Wiring VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 19: Installing The Components

    Remove the connector from the park brake switch, connect it to the piggyback connector on the black wire from the interface connector and plug it back onto the park brake switch. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 20 “C”, you can splice the red wire into that wire or locate an alternate power source, such as the hot side of an ignition switch controlled fuse on the fuse panel. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 21: Connecting The Under-Hood Wiring

    □ Route the two grey wires and the white wire with the plug connector to the compressor. Connect the wires to the matching connectors at the compressor. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 22 Pull all excess wiring back into the cab, bundle the wiring together and tie it up out of the way under the dash. □ Replace all dash panels and other covers removed during installation. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 23: Part 4: Installing The Tank And Hoses

    □ Place the tank on a work bench with the front (oil filter end) of the tank to your right. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 24 Apply Loctite pipe thread sealant and install a 90 degree fitting to the outlet on the tank. Tighten it to about the eight O’clock position for testing, then reposition as required for operational connections (Figure 4.2). VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 25: Installing The Tank Assembly

    □ Insert the threaded ends of the cable straps through the end hole on each of the bar straps. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 26 Wrap the two tank cable straps around the tank strap mounts. Make sure that they fit in the upper and lower cut-outs of the tank strap mounts (Figure 4.3). Cable must fit in the grooves Figure 4.3 VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 27 Place the supplied flat bracket on the bolt and fasten the bracket in place with an 8 mm serrated nut so that it points outward toward the driver’s side. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 28 OEM bolt. □ Position the brackets so that it pulls the cable down enough to clear the tank and brackets. Tighten all the fasteners. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 29: Part 5: Installing The Main Bracket And Compressor

    Skid plate Figure 5.1 □ Route the 1/2 inch hose from the tank outside the body mount to the cooler and connect it to the driver’s side fitting. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 30: Installing The Main Bracket

    Install the OEM O-ring and thermostatic switch from the top engine coolant tube to the replacement tube and insert it into the thermostat housing. Make sure that the O-ring is properly seated. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 31 OEM 10 mm studs that held the OEM cast bracket in place. □ Place the pump in position and thread in the three front 10 mm bolts. Hand-tighten the middle bolt but leave the two outer bolts loose. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 32 OEM nuts on OEM studs Supplied socket-head bolt 10 x 75 mm Supplied socket-head bolt 10 x 100 mm Figure 5.4 VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 33 Apply Loctite and install one M8 x 120mm bolt in the rear right mounting hole. □ Apply Loctite and install the three M8 x 110mm bolts in the remaining mounting holes. Tighten down all four bolts evenly and torque to specification. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 34 □ Apply Loctite to the M6 x 35mm bolts and the M8 nut and install the strut support (Figure 5.7). Torque the two M6 bolts to 71 in- lbs. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 35: Connecting The Hoses

    If it is, the system will not function correctly. Make sure that the hose does not rest on any engine wire harness or other components behind the compressor that could be damaged by heat. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 36: Completing The Installation

    5.8). Tighten the hose clamps. The hose may require slight modifications to clear the compressor, drive pulley and belt. □ Place the supplied fan spacer in position and install and tighten the fan. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...
  • Page 37 Connect all wiring that was disconnected in preparation and install any other OEM parts that were removed. □ On all trucks except the GMT900, remove and discard the hood liner. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 38: Adding Oil To The System

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

  • Page 39: Part 6: Finishing The Installation

    For trucks with automatic transmissions, the engine must be running to complete the final step in the safety test. This will be done after the pre-start checks have been completed. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 40: After Starting The Engine Checklist

    If the vehicle fails the test, check the wiring to make sure that all the connections are correct and secure. If you require additional assistance, contact your local VMAC dealer. Call 1-800-738-8622 or 250-740-3200. 6.2 After Starting the Engine Checklist Make sure that the following have been completed: 6.2.1 Completing the Safety Test...

  • Page 41: Setup, Performance Testing And Adjustments

    5. Operate the air compressor system until the oil is warm. 6. Observe the pressure gauge. Pressure should be approximately 150 psi (See the owner’s manual for adjustment procedures). VMAC – Vehicle Mounted Air Compressors Toll Free: 1-888-241-2289 Fax: 1-250-740-3201...

  • Page 42: 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 6.2).

  • Page 43: 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 toll free 1-888-241-2289 or local 250-740-3200. Eliminator Aftercooler Part Number A800070 Removes up to 80% of moisture from compressed air.
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  • Page 45 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: ______________________________________...
  • Page 46 This page intentionally left blank...
  • Page 48 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 .

This manual is also suitable for:

V900093V900103

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