Kits 25850 and 25854 MN-750 • (081504) • ECR 8138 Single Gauge Analog Compressor Systems INSTALLATION GUIDE For maximum effectiveness and safety, please read these instructions completely before proceeding with installation. Failure to read these instructions can result in an incorrect installation.
TABLE OF CONTENTS Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Important Safety Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Notation Explanation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Installation Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Load Controller / Single Introduction The purpose of this publication is to assist with the installation of the LoadController / Single onboard air management system. It is important to read and understand the entire installation guide before beginning installation or performing any maintenance, service or repair. The information here includes a hardware list and step-by-step installation information.
Load Controller / Single Installation Diagram Analog single gauge (B) Adapter #1 (Q) Power (yellow) wire (N) Adapter Adapter #2 (Q) (P) Fuse adapter (N, O, or P) Fuse Female spades (U x 3) Adapter #3 * (L) (O) * Uses 3/16 (smaller) female push on connector Fuse box Female spade (L or Q) In line 15 amp fuse (I) and fuse holder (J) Harness (C) Butt (yellow) connector (K) Grommet (H) Low pressure sensor (E) Firewall Relay (PIA) (E) Female spade (M) Ground Power (red) wire Female spades (PI
Load Controller / Single Hardware List Item A1 A2 B C D E F G H I J K L M N O P Q R S T U Part # 16060 16092 25194 26512 21952 24558 20946 25196 10463 24652 24539 24752 24524 24595 24543 24561 24542 24594 10466 21838 17441 24592 Description................................ Qty Standard Duty Compressor.................1 Heavy Duty Compressor......................1 Analog Single Gauge...........................1 Harness, Single Analog Gauge...........1 Tee, 1/8 FNPT X 1/4 PTC....................
MN-750 IGNITION SOURCE 0 100 90 70 10 PSI 60 80 30 50 20 40 ANALOG GAUGE 15A AL004A (PK-10GA) IGNITION AL006C (GY-20GA) COMP SIG AL004B (PK-10GA) IGNITION AL006 (GY-20GA) COMP SIG AL004C (PK-20GA) IGNITION AL004D (PK-20GA) IGNITION AL005C (BK-20GA) GROUND WHITE (22GA) RED (22GA) GREEN (22GA) MALE SPADE TERMINALS BLACK (22GA) FEMALE SPADE TERMINALS COMPRESSOR RELAY FEMALE SPADE TERMINALS AL007 (RD/WE-10GA) COMP PWR AL006A (GY-20GA) COMP SIG 1 4 " RING TERMINAL AL005A (BK-20GA)
Load Controller / Single Single Analog Gauge Mounting Options fig. 3 fig. 4 Single analog gauge mounting hardware on bottom of gauge Single analog gauge mounting hardware on top of gauge Power Wires fig. 5 Back of analog gauge fig.
Load Controller / Single Installing the Load Controller / Single System GETTING STARTED This part of the installation should be done after the air spring kit is installed. If you have any questions, please call Air Lift customer service at (800) 248-0892. If you are adding this control system to an Air Lift LoadLifter 5000™ application, then no modifications to the low pressure sensor are necessary.
Load Controller / Single STEP BY STEP INSTALLATION We recommend that you install the air spring kit first per the instructions provided with the air spring kit. fig. 9 Gauge side Gray Black (ground) Compressor side 1. Install the gauge pod (figs. 3, 4 & 5). Select a convenient mounting location that has a sturdy rigid surface. The bottom edge of the dash on either side of the steering wheel is a good location. Attach the gauge pod to the selected location with the black self-tapping screws.
Load Controller / Single Frame Floor pan L-bracket Supplied self tapping screw ¼” Bolt and nut will need to be provided if the L-bracket is fabricated. The L bracket is shown as an optional mounting method and is not supplied. fig. 10 HEAVY DUTY COMPRESSOR MOUNTING (FIG. 1 - A2, 11) NOTE Using the compressor as a template, drill holes and mount the compressor using the black mounting hardware that comes in the box containing the compressor. Frame Floor pan fig.
Load Controller / Single AIR LINE AND POWER WIRE ROUTING FOR THE HEAVY DUTY COMPRESSOR: Filter Leader hose Compression fitting fig. 13 Power (red) wire Ground (A2) heavy duty compressor Butt connector (yellow) 1. Remove the nut from the leader hose and install over air line from check valve assembly. 2. Push the air line from the check valve assembly into the barbed fitting on the compressor leader hose. 3. Slide the nut over the fitting and tighten securely (fig. 13). 4.
Load Controller / Single e. Route air lines into cab from “T” fitting and attach to pressure switch assembly as shown in the pneumatic schematic. f. Route air lines from low pressure switch to gauge barb. g. Press air line over gauge barb. Water or lube may assist in securing air lines over the barb. A circular motion will assist in installation. 6. Connect the power wire to fused ignition. a. Route it to the vehicle fuse box. b. Determine which open terminal (accessory, etc.
Load Controller / Single Product Use Information Frequently asked questions Q. Will installing air springs increase the weight ratings of a vehicle? No. Adding air springs will not change the weight ratings (GAWR, GCWR and/or GVWR) of a vehicle. Exceeding the GVWR is dangerous and voids the Air Lift warranty. Q. Is it necessary to keep air in the air springs at all time and how much pressure will they need? The minimum air pressure should be maintained at all times.
Load Controller / Single Guidelines for adding air: 1. Start with the vehicle level or slightly above. 2. When in doubt, always add air. 3. For motorhomes, start with 50-100 PSI in the rear because it can be safely assumed that it is heavily loaded. 4. If the front of the vehicle dives while braking, increase the pressure in the front air bags, if equipped. 5. If it is ever suspected that the air bags have bottomed out, increase the pressure (fig. 19). 6.
Load Controller / Single Warranty and Returns Policy Air Lift Company warrants its products, for the time periods listed below, to the original retail purchaser against manufacturing defects when used on catalog-listed applications on cars, vans, light trucks and motorhomes under normal operating conditions for as long as Air Lift manufactures the product.
Load Controller / Single Replacement Information If you need replacement parts, contact the local dealer or call Air Lift customer service at (800) 248-0892. Most parts are immediately available and can be shipped the same day. Contact Air Lift Company customer service at (800) 248-0892 first if: • Parts are missing from the kit. • Need technical assistance on installation or operation. • Broken or defective parts in the kit. • Wrong parts in the kit. • Have a warranty claim or question.
Load Controller / Single Notes 16 MN-750
Need Help? Contact our customer service department by calling (800) 248-0892, Monday through Friday. For calls from outside the USA or Canada, our local number is (517) 322-2144. Register your warranty online at www.airliftcompany.com/warranty Thank you for purchasing Air Lift products — the professional installer’s choice! Air Lift Company • 2727 Snow Road • Lansing, MI 48917 or PO Box 80167 • Lansing, MI 48908-0167 Toll Free (800) 248-0892 • Local (517) 322-2144 • Fax (517) 322-0240 • www.airliftcompany.
