Vmac UNDERHOOD 40 Installation Manual
  1. Manuals
  2. Brands
  3. Vmac Manuals
  4. Air Compressor
  5. UNDERHOOD 40 Series
  6. Installation manual

Vmac UNDERHOOD 40 Installation Manual

Hide thumbs Also See for UNDERHOOD 40:
Table of Contents

Advertisement

Quick Links

Download this manual
Installation Manual for VMAC
System
V400033
With Advanced Digital Controls
2023 + Mercedes Sprinter
2.0 L Diesel
www.vmacair.com

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the UNDERHOOD 40 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Vmac UNDERHOOD 40

Summary of Contents for Vmac UNDERHOOD 40

  • Page 1 Installation Manual for VMAC System V400033 With Advanced Digital Controls 2023 + Mercedes Sprinter 2.0 L Diesel www.vmacair.com...

  • Page 3: Table Of Contents

    Accessory Products from VMAC ........60...
  • Page 4 Copyright © 2023 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...

  • Page 5: Safety

    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.

  • Page 6: Warranty

    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.
  • Page 7 VMAC will provide direction for repair or replacement of the failed components. 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.

  • Page 8: General Information

    VMAC dealer or sourced locally. Refer to this Knowledge Base article for compatible hoses: EXT-ALL-010-Required-VMAC-Hoses.pdf 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.
  • Page 9 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.

  • Page 10: Component Identification And Overview

    Control Components Overview Compressor Display Controller Display Box WHASP (alternate location) Tank Figure 1 — General component overview (Actual installation locations may vary) VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289 VMAC Knowledge Base: kb.vmacair.com...
  • Page 11 Control Module (Controller) (Figure 2) The control module serves as the primary input/output interface between the vehicle and the various VMAC components (compressor, DTC, WHASP Tank, Display Box, etc.). Figure 2 — Control module Display Box (Figure 3) The display box serves as the operator’s control panel and contains the “ENTER”...
  • Page 12 The system pressure sensor is mounted on the side of the WHASP tank and measures the system pressure. The clutch will disengage once system pressure is achieved. Pressure sensor Figure 5 — WHASP Tank pressure sensor VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289 VMAC Knowledge Base: kb.vmacair.com...

  • Page 13: Preparing For Installation

    Review the contents of the system using the illustrated parts list to ensure all components are present and in the correct quantity. If any components are missing, have the system ID ready and call VMAC Technical Support. ☐ Remove the driver side step cover and floor mat (Figure 6).
  • Page 14 Figure 8 — Identify crank pulley Vehicles equipped with the OEM dual row crank pulley, turn to “Main Bracket and Compressor Installation” on page 14. VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289 VMAC Knowledge Base: kb.vmacair.com...

  • Page 15: Vmac Pulley Installation

    Do not reuse the OEM fasteners as they are “torque to yield”. ☐ Apply Loctite 242 (blue) to (×4) supplied crank pulley fasteners. Using the supplied fasteners and washers, install the VMAC crank pulley:* ☐ *Step 1: Install (×2) fasteners and washers in the counterbored holes.

  • Page 16: Main Bracket And Compressor Installation

    Using the supplied fasteners, install the main bracket onto the passenger side of the oil pan (Figure 9, Figure 10). M8×1.25×70 M8×1.25×100 Figure 9 — VMAC Main bracket mount location VMAC main bracket Figure 10 — VMAC main bracket installed...
  • Page 17 Remove the tensioner, apply Loctite 242 (blue), and reinstall the tensioner (Figure 11). Figure 11 — Install tensioner ☐ Install one of the supplied idlers onto the VMAC main bracket (Figure 12). Figure 12 — Install main bracket idler VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289...
  • Page 18 Using (×3) M8 × 1.25 × 35 mm bolts, mount the compressor assembly, and pressure switch assembly (in the orientation shown) onto the main bracket (Figure 14). Figure 14 — Mount compressor VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289 VMAC Knowledge Base: kb.vmacair.com...
  • Page 19 (Figure 15). Install idler Figure 15 — Install oil pan idler ☐ Install and tension the VMAC belt (Figure 16). Figure 16 — VMAC belt routing VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289...
  • Page 20 The air filter will mount to the driver side bumper mount (located in the void beneath the driver side headlight) (Figure 18). Front of Bumper vehicle mounting bolts Figure 18 — Install compressor air filter bracket VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289 VMAC Knowledge Base: kb.vmacair.com...
  • Page 21 Air intake hose Figure 20 — Install remote intake hose ☐ Route the air intake hose along the cross member below the radiator, up to the VMAC air filter assembly (Figure 20). ☐ Trim hose to length (if required). ☐...

  • Page 22: Waste Heat Air Separator Package (Whasp) Tank Installation

    Illustrated Parts List (IPL). If the WHASP Tank or bulkhead fitting location requires longer hoses, contact a local VMAC dealer. See page 6 for ordering information. VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289...
  • Page 23 18 1/8 in 15 3/8 in 4 1/2 in 5/16 in or M8 mounting holes Figure 21 — Minimum WHASP Tank mounting clearances VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289 VMAC Knowledge Base: kb.vmacair.com...
  • Page 24 (Figure 23). Front of vehicle Provide a minimum of 6 in of clearance for air flow Figure 23 — WHASP ventilation VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289 VMAC Knowledge Base: kb.vmacair.com...

  • Page 25: Bulkhead Fittings Installation

    26 of this manual. Figure 24 — Bulkhead fittings (A700224 Remote Muffler accessory shown) VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289 VMAC Knowledge Base: kb.vmacair.com...
  • Page 26 This kit includes hoses of an adequate length to connect to the location specified in this manual. If installing in an alternate location: • Contact a VMAC dealer to order hose extensions. • If sourcing custom length hoses locally, Refer to this Knowledge Base article for compatible hoses: EXT-ALL-010-Required-VMAC- Hoses.pdf.
  • Page 27 Apply Loctite 567 (thread sealant) when installing the 1/4 in push-to-connect fittings in the bulkhead fittings (Figure 26, Figure 27). Figure 26 — Interior View Figure 27 — Exterior View VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289 VMAC Knowledge Base: kb.vmacair.com...

  • Page 28: Hose Requirements

    • 1/4 in (PTFE Tube) × 108 in. If longer hoses are required: To order parts, contact a VMAC dealer. The dealer will ask for the VMAC serial number, part number, description and quantity. See page 6 for ordering information.

  • Page 29: Hose Installation

    Slide the collet out once proper tubing cutters as side cutters the tube is fully inserted will deform the tube. O-ring Figure 28 — Push-to-connect fittings VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289 VMAC Knowledge Base: kb.vmacair.com...
  • Page 30 Apply Loctite 567 (thread sealing) compound to the supplied fitting and install it into the blowdown solenoid (Figure 30). Install fitting Figure 30 — Install fitting VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289 VMAC Knowledge Base: kb.vmacair.com...
  • Page 31 ☐ Route the 1/4 in PTFE tube to the bulkhead fitting, ensuring the tube will not kink or be damaged from incidental damage from other operations. VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289 VMAC Knowledge Base: kb.vmacair.com...
  • Page 32 Connect the discharge fitting (#8 male JIC) to the customer’s air system (hose not supplied). ☐ Secure all hoses, tubes, and wires with P-clips and/or cable ties. VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289 VMAC Knowledge Base: kb.vmacair.com...
  • Page 33 Route the 3/4 in and 3/8 in hoses, as well as the 1/4 in PTFE tube, over the frame crossmembers and steering rack (Figure 35). PTFE from Pressure compressor switch PTFE 3/4 in hose 3/8 in hose Figure 35 — Install hoses VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289 VMAC Knowledge Base: kb.vmacair.com...
  • Page 34 Route the hoses along the base of the frame/body, and up to the bulkhead fittings installed earlier (Figure 37, Figure 38, and Figure 39). Secure 3/4 in hose Figure 37 — Route hoses VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289 VMAC Knowledge Base: kb.vmacair.com...
  • Page 35 (Figure 37, Figure 38, and Figure 39). ☐ Using cable ties, secure the 3/8 in hose and 1/4 in PTFE tube to the 3/4 in hose. VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289 VMAC Knowledge Base: kb.vmacair.com...

  • Page 36: Adding Oil To The System

    Adding Oil to the System The VMAC supplied and approved compressor oil must be used in this system. Failure to use this special oil will result in damage to the compressor and will void warranty. Do not overfill the system. Overfilling the system with oil can flood the sight glass window and make the system appear empty.

  • Page 37: Electrical Schematic

    Electrical Schematic Figure 41 — Electrical schematic VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289 VMAC Knowledge Base: kb.vmacair.com...

  • Page 38: Harness Reference

    Batt “+” (Ring terminal) Colour Function Notes Connect to battery “+“ terminal. — VMAC System 12 V power Power supply for VMAC system. Protected with 20 A inline fuse. VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289 VMAC Knowledge Base: kb.vmacair.com...
  • Page 39 Green Ground — 12 V power output from Switched power from Controller. Yellow Controller (Activate 12 V when compressor clutch is Compressor) engaged, 0 V otherwise. VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289 VMAC Knowledge Base: kb.vmacair.com...
  • Page 40 Colour Function Notes Green Ground — 12 V power output from 12 V when blowdown solenoid is Yellow Controller (activate engaged, 0 V otherwise. blowdown solenoid). VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289 VMAC Knowledge Base: kb.vmacair.com...

  • Page 41: Electronics And Control Component Installation

    Installation Best Practices • Ensure the system ground is connected to the VMAC recommended ground locations whenever possible. These locations are designed to be used as a ground point and can handle high currents while providing a low resistance connection. Do not use any bolt as a ground location as the increased resistance could cause system brown-out when the high current fan kicks on.
  • Page 42 OEM wire Barrel Small cap Cap fully removed from tap for illustrative purposes only Figure 42 — Posi-Tap wire connector VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289 VMAC Knowledge Base: kb.vmacair.com...
  • Page 43 If lengths greater than this are required, consult VMAC Technical Support prior to installation. VMAC’s UNDERHOOD 40 Air Compressor systems require up to 20 A at 12 V dc (nominal) to operate. A 20 A inline fuse is included on the red power supply line.
  • Page 44 Locate the (×3) terminal studs that serve as the electrical access point under the driver seat (Figure 43). Terminal studs Terminal studs Figure 43 — Electrical access point VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289 VMAC Knowledge Base: kb.vmacair.com...
  • Page 45 Depress the (×4) clips in the OBD II connector and pull it out from the bottom to gain easier access to the wires. ☐ Peel back the tape on the harness a few inches. VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289 VMAC Knowledge Base: kb.vmacair.com...
  • Page 46 Pull any excess harness into the cab, coil it, and secure it safely out of the way. ☐ Using cable ties and/or rubber coated P-clips, secure the harnesses. ☐ Using cable ties and/or rubber coated P-clips, secure the harnesses. VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289 VMAC Knowledge Base: kb.vmacair.com...
  • Page 47 Plug the “BLOWDOWN SOL” harness into the solenoid on the WHASP tank. ☐ Coil any excess harness and secure it safely out of the way. ☐ Using cable ties and/or rubber coated P-clips, secure the harnesses. VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289 VMAC Knowledge Base: kb.vmacair.com...

  • Page 48: Telematics Integration (Optional)

    The supplied VMAC display box contains the 120 Ω termination resistor and has CAN packet acknowledgment. • If the supplied VMAC display box is not used the following are required: 120 Ω termination resistor across CAN signal lines. Ǜ CAN packet acknowledgement.

  • Page 49: Remote Start Integration (Optional)

    Remote Start Integration (Optional) The “system on” command is registered after 3 seconds. VMAC recommends programing 3rd party controls or relay actuation for 4 seconds to allow sufficient time for the command to register. A remote start/stop option is available on a signal line provided in the upfitter harness.

  • Page 50: Completing The Installation

    Completing the Installation ☐ Check all VMAC and OEM wiring to ensure that it will not contact any hot, sharp or moving components and will not interfere with the operation of the vehicle. Secure all wiring with rubber coated P-clips, cable ties and loom as required.
  • Page 51 ☐ Install the VMAC belt routing decal in a suitable location under the hood (Figure 50). Figure 50 — Belt routing decal (actual belt routing decal may differ) ☐ As part of the installation process, ensure that the safety and operational instruction decal is affixed in an obvious location so that it can be seen by vehicle operators.

  • Page 52: Air Receiver Tank

    This is normal operation. Prior to performing any service work on the system, discharge any stored air in the air receiver tank. The VMAC WHASP Tank has a built-in check valve. Use of an additional check valve is not required and may cause erratic performance.

  • Page 53: Recommended Accessories

    (This application requires a minimum air receiver tank size of 6 USG). Pressure Gauge While the VMAC display box displays the system pressure, installing a mechanical gauge closer to the tool can be helpful for fine tuning the system and simplifies any potential troubleshooting.

  • Page 54: Testing The Installation

    VMAC. This message should not be cleared by an Upfitter or third party installer! Refer to the UNDERHOOD 40 Owner’s Manual for instructions on how to clear this reminder. For an overview of the display box and basic operating instructions turn to “Basic Operation”...
  • Page 55 The display should indicate “Park” only when the gear selector is in park. Note: Neutral is vehicle dependent and could display either “Park” or “Not in Park”. The VMAC system is safe to operate provided the vehicle is not in gear. ☐...
  • Page 56 *Remote Start: Refer to page 47, or the documentation provided by the Upfitter for remote start instructions. The first time the VMAC system is run, the DTC will perform an auto-calibration as it adjusts to the vehicle’s tune, this process can take up to 3 minutes.
  • Page 57 Ensure the following has been completed: ☐ Operate the system with an air tool (or the VMAC Air Test Tool with the appropriate orifice installed) for at least 1/2 hour (1 hour preferred). The WHASP Tank cooling fan is thermostatically controlled, and may start or stop without warning.

  • Page 58: Basic Operation

    • Press and release the “ENTER” button to make a selection. • Press and hold the ”ENTER”/Power button for 3 seconds to power the VMAC system on. The power indicator on the display should change from “OFF to “ON”. Ǜ...
  • Page 59 Once the above conditions are confirmed, the compressor clutch will engage and the system will start building air. • Engine speed will elevate to “maxRPM” (this is defined by the VMAC system specific to the vehicle application). See “System Adjustment, Optimization, and Basic Parameters” on page 59 .

  • Page 60: Performance Testing

    Performance Testing System operation can be tested using the tools that will be operated by the system or by using the VMAC Test Tool (A700052) with the 40 cfm (5/32 in) orifice in the outlet to simulate tool use (Figure 55).

  • Page 61: System Adjustment, Optimization, And Basic Parameters

    VMAC rpm. ☐ With the VMAC system running and in “STANDBY”, mode, navigate to “Sys Parameters”. ☐ Adjust “Max RPM” to the desired value.

  • Page 62: Accessory Products From Vmac

    Compressor Service Kits 200 Hour or 6 Month Service Kit - Part number: A700263 Includes 4 L VMAC high performance compressor oil, oil filter, air filter, and next service due decal. 400 Hour or 1-Year Service Kit - Part number: A700264...
  • Page 63 90° 3/8 in hose fitting P/N: 4900117. 3/8 in hose fitting for Oil Return Hose. 90° 3/4 in hose fitting P/N: 4900043. 3/8 in hose fitting for Compressor Discharge Hose. VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289 VMAC Knowledge Base: kb.vmacair.com...
  • Page 64 Air receiver tanks are used for lowering compressor duty cycle and removing water from compressed air; recommended for optimum operation of all VMAC Gas Driven, Diesel Driven, Hydraulic, and UNDERHOOD40 air compressors. Manufactured to FMVSS 121 standard; includes fittings, 170 psi pressure relief valve, and tank drain.
  • Page 65 Notes VMAC - Vehicle Mounted Air Compressors VMAC Technical Support: 888-241-2289 VMAC Knowledge Base: kb.vmacair.com...

  • Page 66: Warranty Registration

    Warranty Registration This form must be fully completed and returned to VMAC at the time the vehicle is put into service. Warranty may be void if this form is not received by VMAC within 3 months of receiving the vehicle, or 200 hours of operation, whichever occurs first.
  • Page 68 Manufactured by ® 888-241-2289 tech@vmacair.com 877-740-3202 warranty@vmacair.com www.vmacair.com kb.vmacair.com 1333 Kipp Road, Nanaimo, B.C., V9X 1R3 Canada...

This manual is also suitable for:

V400033

Table of Contents