1. Manuals
  2. Brands
  3. Maxon Manuals
  4. Lifting Systems
  5. GPSLR Series
  6. Installation manual

Maxon GPSLR Series Installation Manual

Hide thumbs Also See for GPSLR Series:
Table of Contents

Advertisement

Quick Links

Download this manual
M-18-08
REV B
JANUARY 2024
To fi nd maintenance & parts information for your
GPSLR Liftgates, go to www.maxonlift.com.
Click the PRODUCTS, SLIDELIFT and GPSLR
buttons. Open the Maintenance Manual in the
PRODUCT DOCUMENTATION window. For
parts, click on the PARTS PORTAL, SLIDELIFT
and GPSLR buttons.
© 2024 MAXON Lift Corp.
DRAFT 05-03-24

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the GPSLR Series and is the answer not in the manual?

Questions and answers

Related Manuals for Maxon GPSLR Series

Summary of Contents for Maxon GPSLR Series

  • Page 1 To fi nd maintenance & parts information for your GPSLR Liftgates, go to www.maxonlift.com. Click the PRODUCTS, SLIDELIFT and GPSLR buttons. Open the Maintenance Manual in the PRODUCT DOCUMENTATION window. For parts, click on the PARTS PORTAL, SLIDELIFT and GPSLR buttons. © 2024 MAXON Lift Corp. DRAFT 05-03-24...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS SUMMARY OF CHANGES: M-18-08, REVISION B ............. 4 WARNINGS ........................... 5 SAFETY INSTRUCTIONS ....................6 NOTICE ..........................6 STANDARD LIFTGATE COMPONENTS ................7 GPSLR & GPSLRT INSTALLATION PARTS BOXES............9 GPSLR PARTS BOX FOR TRAILERS ................10 GPSLRT PARTS BOX FOR TRUCKS ..................11 ELECTRICAL ASSEMBLY KITS ..................
  • Page 3 ATTACH DECALS ....................... 66 DECAL POSITIONS ......................68 SYSTEM DIAGRAMS ......................70 PUMP & MOTOR SOLENOID OPERATION - SINGLE PUMP ........... 70 PUMP & MOTOR SOLENOID OPERATION - DUAL PUMPS ..........71 HYDRAULIC SCHEMATIC - GRAVITY DOWN ..............72 HYDRAULIC SCHEMATIC - POWER DOWN ..............73 ELECTRICAL SCHEMATIC, 12V, GRAVITY DOWN, WITH MAX ECU ......

  • Page 4: Summary Of Changes: M-18-08, Revision B

    SUMMARY OF CHANGES: M-18-08, REVISION B PAGE DESCRIPTION OF CHANGE COVER Updated cover image, REV. and date of release. Illustrations changed to new design. Added Note to cover Liftgate with a welding blanket and cut jig 7, 8 installation channels to avoid interference with vehicle prior to installation. Removed unnecessary part numbers for installation jig.

  • Page 5: Warnings

    Comply with the following WARNINGS and SAFETY INSTRUCTIONS while installing Liftgates. See Operation Manual for operating safety requirements. WARNING Installing and maintaining a liftgate can expose you to chemicals, including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To mini- mize exposure, install and maintain liftgate in a well-ventilated area and wear proper Personal protective equipment (PPE).

  • Page 6: Safety Instructions

    Liftgate. NOTICE NOTICE • Maxon Lift is responsible for the instructions to correctly install MAXON Liftgates on trucks or trailers only. • Liftgate installers, not Maxon Lift, are responsible for reviewing and complying with all applicable Federal, State, and Local regulations pertaining to the trailer or truck.

  • Page 7: Standard Liftgate Components

    NOTE: Make sure you have all components and parts before you start installing Liftgate. Compare parts in the part box and each kit box with packing list enclosed in each box. If parts and components are missing or incorrect, call: Maxon Customer Service Call (800) 227-4116 or Send e-mail to cservice@maxonlift.com...
  • Page 8 STANDARD LIFTGATE COMPONENTS - Continued NOTE: Vertical channels on Liftgate installation jig may need to be cut shorter to prevent interference with underbody of vehicle. See FIG. 8-1. The shaded portion of each channel shows how much of the channel that may need to be cut to prevent interference.

  • Page 9: Gpslr & Gpslrt Installation Parts Boxes

    GPSLR & GPSLRT INSTALLATION PARTS BOXES NOMENCLATURE OR DESCRIPTION QTY. PART NUMBER GPSLR INSTALLATION PARTS BOX 210975-01 FRAME MOUNT BUSHING ADAPTER 210916-01 HEX BOLT, 1/2”-13 X 2” LG., GR9 901635-05 FLANGE LOCK NUT, 1/2”-13 901023 J-BOX MOUNTING FLAT 288087-01 GUSSET, GPSLR MOUNT 268674-01 INSTALLATION ON TRAILERS WITH 42-1/8”...

  • Page 10: Gpslr Parts Box For Trailers

    GPSLR PARTS BOX FOR TRAILERS PART NOMENCLATURE OR DESCRIPTION QTY. NUMBER PARTS BOX, GPSLR 289101-02 CONTROL SWITCH ASSEMBLY 289353-02 DECAL SHEET, UP/DOWN 299038-01 INTERNAL SWITCH MOUNTING BRACKET, GALVANIZED 289255-01G SELF-TAPPING SCREW,10-24 X 1/2” LG. 900766-02 FLAT WASHER, #10 903444-01 BUTTON SCREW, 10-24 X 1-1/2” LG. 900722-09 LOCK NUT, THIN, 10-24 903129-01...

  • Page 11: Gpslrt Parts Box For Trucks

    GPSLRT PARTS BOX FOR TRUCKS PART NOMENCLATURE OR DESCRIPTION QTY. NUMBER PARTS BOX, GPSLRT 289101-01 CONTROL SWITCH ASSEMBLY 289353-02 DECAL SHEET, UP/DOWN 299038-01 INTERNAL SWITCH MOUNTING BRACKET, GALVANIZED 289255-01G SELF-TAPPING SCREW,10-24 X 1/2” LG. 900766-02 FLAT WASHER, #10 903444-01 BUTTON SCREW, 10-24 X 1-1/2” LG. 900722-09 LOCK NUT, THIN, 10-24 903129-01...

  • Page 12: Electrical Assembly Kits

    ELECTRICAL ASSEMBLY KITS PART NOMENCLATURE OR DESCRIPTION QTY. NUMBER ELECTRICAL ASSEMBLY, 12V, GRAVITY DOWN 287890-01 CABLE ASSEMBLY, FLEXIBLE LOOP, 20’ LG. 211141-02 CABLE ASSEMBLY, LOCK VALVE, 16/2, 65” LG. 282625-26 CABLE ASSEMBLY, LOCK VALVE, 16/2, 120” LG. 282625-27 CABLE ASSEMBLY, LOCK VALVE, 16/2, 56” LG. 282625-07 PLASTIC TIE, 8”...
  • Page 13 ELECTRICAL ASSEMBLY KITS- Continued PART NOMENCLATURE OR DESCRIPTION QTY. NUMBER ELECTRICAL ASSEMBLY, 12V, POWER DOWN 287890-02 CABLE ASSEMBLY, FLEXIBLE LOOP, 22’ LG. 211141-02 CABLE ASSEMBLY, LOCK VALVE, 16/2, 65” LG. 282625-26 CABLE ASSEMBLY, LOCK VALVE, 16/2, 120” LG. 282625-27 CABLE ASSEMBLY, LOCK VALVE, 16/2, 56” LG. 282625-07 PLASTIC TIE, 8”...

  • Page 14: Vehicle Requirements For Trailers

    VEHICLE REQUIREMENTS FOR TRAILERS CAUTION The sliding axle assembly on a trailer can collide with a Liftgate mounted on the slide rails. To prevent damage to Liftgate and trailer, install stops on the slide rails to keep the sliding axles from hitting Liftgate. Refer to Liftgate clearance dimensions in this section of the manual.
  • Page 15 VEHICLE REQUIREMENTS FOR TRAILERS - Continued DEPTH OF LIFTGATE MOUNTED ON TRAILER FIG. 15-1 LIFTGATE WIDTH PF MAIN OVERALL (SLIDER WIDTH WIDTH DEPTH DEPTH WIDTH) 27” 71” 96” 86” 85” 53-5/16” 47-1/8” 37” 81” CLEARANCE DIMENSIONS TABLE 15-1 DRAFT 05-03-24...

  • Page 16: Installation Guidelines For Trailers

    INSTALLATION GUIDELINES FOR TRAILERS NOTE: For 48” slide rail trailer installation, refer to TABLE 17-1. For 42” slide rail trailer installation, refer to TABLE 18-1. FLOOR FLOOR CROSSMEMBER THICKNESS (22” MAX) GROUND GPSLR INSTALLATION GUIDELINES FIG. 16-1 DRAFT 05-03-24...
  • Page 17 INSTALLATION GUIDELINES FOR TRAILERS - Cont’d Use the correct installation brackets kit P/N 287930-01 and dimensions (TABLE 17-1) to prevent interference between vehicle and Liftgate. INSTALLATION VEHICLE INFORMATION GROUND CLEARANCE POSITION MOUNT HOLE 10-3/4” 49-60” 14-5/8” 14.3-25.3” 12-20.7” 28.7” 16.6-21.6” 9-3/4”...
  • Page 18 INSTALLATION GUIDELINES FOR TRAILERS - Cont’d Use the correct installation brackets kit P/N 287930-03 and dimensions (TABLE 18-1) to prevent interference between vehicle and Liftgate. INSTALLATION VEHICLE INFORMATION GROUND CLEARANCE POSITION MOUNT HOLE 49-60” 14-5/8” 14.3-25.3” 12-20.7” 28.7” 10-3/4” 16.6- 48-60”...

  • Page 19: Step 1 - Installing Liftgate On Trailers

    STEP 1 - INSTALLING LIFTGATE ON TRAILERS INITIAL MOUNTING ADJUSTMENTS BASED ON BED HEIGHT NOTE: Installation brackets are located on both sides of Liftgate in 4 places.. 1. Remove shipping bands from liftgate and installation jig. 2. Unbolt and remove installation plates from Liftgate (FIG. 19-1). Measure and record trailer fl...
  • Page 20 STEP 1 - INSTALLING LIFTGATE ON TRAILERS- Cont’d MOUNTING HOLES (TABLE 18-1) HOLE #5 HOLE #4 HEX BOLT, 1/2”-13, HOLE #3 1-3/4” LG. HOLE #2 (16 PLACES) HOLE #1 FIG. 20-1A INSTALLATION PLATE (4 PLACES) FLANGE NUT, 1/2”-13 (16 PLACES) INSTALLATION PLATES FOR TRAILERS WITH 42”...
  • Page 21 STEP 1 - INSTALLING LIFTGATE ON TRAILERS- Cont’d CAUTION To avoid personal injury, use at least 2 people to position Liftgate. NOTE: Ensure vertical channels on the installation jig are short enough to prevent interference with underbody of vehicle. 4. Use forklift to center Liftgate on rear of vehicle (FIG.
  • Page 22 STEP 1 - INSTALLING LIFTGATE ON TRAILERS - Cont’d NOTE: For clarity Liftgate is not shown in the illustrations below. 42-1/8” OR 48-1/8” SLIDE RAIL SLIDE RAIL INSTALLATION PLATE INSTALLATION PLATE INSTALLATION PLATES INSTALLED FLUSH AGAINST INBOARD SIDE OF SLIDE RAILS FIG.
  • Page 23 STEP 1 - INSTALLING LIFTGATE ON TRAILERS - Cont’d NOTE: For clarity Liftgate is not shown in the illustrations below. 42-5/8” OR 48-5/8” SLIDE RAIL SLIDE RAIL INSTALLATION PLATE INSTALLATION PLATE PLATES INSTALLED FLUSH AGAINST INBOARD SIDE OF SLIDE RAILS FIG.

  • Page 24: Weld Gussets To Trailer

    STEP 1 - INSTALLING LIFTGATE ON TRAILERS - Cont’d WELD GUSSETS TO TRAILER 1. Cover Liftgate with welding blanket (FIG. 24-1). WELDING BLANKET LIFTGATE COVERED WITH WELDING BLANKET FIG. 24-1 NOTE: For clarity Liftgate is not shown in the illustration below. NOTE: Grind galvanized surface material from areas to be welded.
  • Page 25 STEP 1 - INSTALLING LIFTGATE ON TRAILERS - Cont’d WELD GUSSETS TO TRAILER - Continued 3. Lower jig and remove from under Liftgate (FIG. 25-1). REMOVING JIG FROM LIFTGATE FIG. 25-1 DRAFT 05-03-24...

  • Page 26: Weld Handle Support Angle To Trailer

    STEP 1 - INSTALLING LIFTGATE ON TRAILERS - Cont’d WELD HANDLE SUPPORT ANGLE TO TRAILER NOTE: Underbody may interfere with position of the handle support angle. If nec- essary, before welding, the angle support can be marked and cut to fi t underbody.

  • Page 27: Vehicle Requirements For Trucks

    VEHICLE REQUIREMENTS FOR TRUCKS NOTE: Maximum operating bed height for trailer is is 60” (Unloaded). Minimum bed height is 46” (Loaded). On vehicle bodies equipped with swing-open doors, the platform may have to be modifi ed to install this Liftgate. NOTE: Make sure vehicle is parked on level ground with parking brake set while preparing vehicle and installing Liftgate.
  • Page 28 VEHICLE REQUIREMENTS FOR TRUCKS - Continued OVERALL DEPTH OF LIFTGATE FIG. 28-1 LIFTGATE WIDTH OVERALL (SLIDER WIDTH WIDTH DEPTH DEPTH WIDTH) 27” 68” 96” 86” 85” 53-5/16” 47-1/8” 37” 78” CLEARANCE DIMENSIONS FOR TRUCKS TABLE 28-1 DRAFT 05-03-24...

  • Page 29: Installation Guidelines For Trucks

    INSTALLATION GUIDELINES FOR TRUCKS NOTE: Refer to TABLE 30-1 for installation dimensions for trucks. FLOOR FLOOR THICKNESS 36” OR 46” 1/2” GROUND (30” MAX) INSTALLATION GUIDELINES FOR GPSLRT FIG. 29-1 DRAFT 05-03-24...
  • Page 30 INSTALLATION GUIDELINES FOR TRUCKS - Continued VEHICLE INFORMATION GROUND CLEARANCE REF. CHASSIS CUT OUT 10-3/4” 27” 48-60” 13.8” 11.75” 28” 14-26” 11.8-23.8” 16.4-28.4” 15.5” 27” 48-60” 13.8” 11.75” 27” 9-3/4” 26” 47-60” 12.8” 10.75” 14-27” 11.8-24.8” 16.4-29.4” 28” 14.5” 27” 48-60”...

  • Page 31: Step 1 - Installing Liftgate On Trucks

    STEP 1 - INSTALLING LIFTGATE ON TRUCKS WARNING Use welding blankets to protect lines and tubes from weld spatter. CAUTION To avoid personal injury, use at least 2 people to position Liftgate. NOTE: Ensure vertical channels on the installation jig are short enough to prevent interference with underbody of vehicle.
  • Page 32 STEP 1 - INSTALLING LIFTGATE ON TRUCKS - Cont’d NOTE: For clarity Liftgate is not shown in the illustrations below.. 2. Refer to the correct bed height and clearance dimensions of the truck (TABLE 30-1) to determine if Liftgate installa- tion plates and gussets should be welded to the truck chas- sis or long sill under the truck body (FIGS.
  • Page 33 STEP 1 - INSTALLING LIFTGATE ON TRUCKS - Cont’d NOTE: If truck chassis interferes with Liftgate installation, cut the chassis as shown below. Refer to TABLE 29-1 for CH dimension. 3. If required, mark position for chassis cutout on both sides of the truck chassis (FIG. 33-1). Refer to TABLE 29-1 for dimension CH.
  • Page 34 STEP 1 - INSTALLING LIFTGATE ON TRUCKS - Cont’d 4. Unbolt and remove mounting gussets from installation plates on Liftgate. Discard screws, washers and nuts (FIG. 34-1). MOUNTING GUSSET (4 PLACES) HEX CAP SCREW, RH INSTALLATION 3/8”-16 X 1-1/4” LG. PLATE (4 PLACES) FLAT WASHER, 3/8”...
  • Page 35 STEP 1 - INSTALLING LIFTGATE ON TRUCKS - Cont’d NOTE: Cut a spacer long enough to extend over mounting gussets. Thickness of spacer is determined by dimensions Y or RS+1”, whichever is greater. Clamp spacer to crossmembers, and use spacer to align mounting gussets. Refer to FIGS.
  • Page 36 STEP 1 - INSTALLING LIFTGATE ON TRUCKS - Cont’d 7. Weld mounting gussets to truck chassis and long sill as shown in FIGS. 36-1 or 36-2. 1/4” TYPICAL 1/4” LONG SILL MOUNTING GUSSETS TRUCK CHASSIS WELDING MOUNTING GUSSETS ON LONG SILL FIG.
  • Page 37 STEP 1 - INSTALLING LIFTGATE ON TRUCKS - Cont’d 8. For gussets welded above truck chassis, weld chassis 2 PLACES 1/4” support brackets to long sill and truck chassis (FIG. 37-1). LONG SILL 2 PLACES 1/4” MOUNTING GUSSETS CHASSIS SUPPORT BRACKETS WELDING CHASSIS SUPPORT BRACKETS ON LONG SILL &...
  • Page 38 STEP 1 - INSTALLING LIFTGATE ON TRUCKS - Cont’d 10. Ensure liftgate installation plate is aligned with gussets as shown in FIG. 38-1. LH MOUNTING PLATE MOUNTING GUSSETS ALIGNING INSTALLATION PLATE (LH SHOWN) FIG. 38-1 11. Weld installation plate to gussets as MOUNTING shown in FIG.
  • Page 39 STEP 1 - INSTALLING LIFTGATE ON TRUCKS - Cont’d 12. For gussets welded below the 4 PLACES long sill, weld chassis support 1/4” brackets to installation plate and truck chassis as shown in FIG. 39-1. INSTALLATION PLATE CHASSIS SUPPORT BRACKETS WELDING CHASSIS SUPPORT BRACKETS TO FIG.

  • Page 40: Weld Handle Support Angle To Truck

    STEP 1 - INSTALLING LIFTGATE ON TRUCKS - Cont’d WELD HANDLE SUPPORT ANGLE TO TRUCK NOTE: Underbody may interfere with position of the handle support angle. If nec- essary, before welding, the angle support can be marked and cut to fi t underbody.

  • Page 41: Step 2 - Weld J-Box To Underbody

    STEP 2 - WELD J-BOX TO UNDERBODY 1. Position two J-box mounting fl ats (Kit items) on vehicle crossmembers (FIGS. 41-1 and 41-1A). Mark position of fl ats at the bottom of the crossmembers and cut off excess length of fl ats as shown in FIG. 41-1A. J-BOX MOUNTING FLATS CUT OFF...
  • Page 42 STEP 2 - WELD J-BOX TO UNDERBODY - Continued NOTE: Grind galvanized surface material from areas to be welded. 2. Weld J-box mounting fl ats to vehicle crossmembers as shown in FIG. 42-1. 4 PLACES” 1/4” CROSSMEMBER MOUNTING FLATS WELDING J-BOX MOUNTING FLATS FIG.
  • Page 43 STEP 2 - WELD J-BOX TO UNDERBODY - Continued NOTE: Grind galvanized surface material from areas to be welded. 4. Clamp J-box mounting bracket in correct position on mounting fl ats (FIG. 43-1). Prior to welding, check the clearance between J-box and lift arm in both fl...

  • Page 44: Step 3 - Attach Control Switches

    STEP 3 - ATTACH CONTROL SWITCHES CAUTION Prevent damage to control box. Make sure installed control box does not protrude from the vehicle body. CAUTION To protect the original paint system, a 3” wide area of paint must be removed from bracket on all sides of the weld area before welding.
  • Page 45 STEP 3 - ATTACH CONTROL SWITCHES - Continued 3. Fasten internal control to bracket using LOCK NUT, 10-24 (2 PLACES) screws, fl at washee (Kit items) (FIG. 45-1). FLAT WASHER #10 (2 PLACES) BUTTON SCREW, 10-24, 1-1/2” LG. (2 PLACES) INTERNAL CONTROL SWITCH BRACKET...
  • Page 46 STEP 3 - ATTACH CONTROL SWITCHES - Continued 5. Drill 3/4“ hole through vehicle fl oor as shown in FIGS. 46-1 and 46-1A. VEHICLE USE 3/4” WALL DRILL VERTICAL POST VERTICAL POST HOLE LOCATION FIG. 46-1A HOLE DRILLED FOR WIRING FIG.
  • Page 47 STEP 3 - ATTACH CONTROL SWITCHES - Continued 6. Run control cable from J-box, un- der vehicle body (see dashed line, INTERNAL (FIG. 47-1), and up through vehicle CONTROL SWITCH fl oor. Pull control cable through 3/4“ hole (FIG. 47-1). 3/4”...
  • Page 48 STEP 3 - ATTACH CONTROL SWITCHES - Continued 9. Remove J-box cover as shown in FIG. 48-1. LOCK NUT, 5/16”-18 (4 PLACES) FENDER WASHER, 5/16” X 3/4” O.D. (4 PLACES) HEX BOLT, 5/16”-18 X 4-3/4” LG. (4 PLACES) J-BOX COVER REMOVING J-BOX COVER FIG.
  • Page 49 STEP 3 - ATTACH CONTROL SWITCHES - Continued 10. Knock out plastic plug from the cable gland (FIG. 49-1A). Next, connect external and internal control switches (Kit items) to J-box as shown in FIGS. 49-1 and 49-1B. EXTERNAL CONTROL INTERNAL CONTROL SWITCH SWITCH PLASTIC...

  • Page 50: Step 4 - Run Power Cable

    STEP 4 - RUN POWER CABLE CAUTION Never route an energized wire. Make sure the vehicle battery is disconnected. Always route electrical wires clear of moving parts, brake lines, sharp edges and exhaust systems. Avoid making sharp bends in wiring. Attach securely. If drilling is necessary, fi...

  • Page 51: Step 5 - Connect Power & Ground Cables To J-Box

    STEP 5 - CONNECT POWER & GROUND CABLES TO J-BOX NOTICE Protect electrical connections on the J-box with a clear corrosion preventative spray. It must be clear to read the labels for the connections. NOTE: Bare wires must not be visible after the heatshrink tubing shrinks on terminal lug.
  • Page 52 STEP 5 - CONNECT POWER & GROUND CABLES TO J-BOX - Continued 4. Form a drip loop on the ground (-) cable where it enters the cable gland from outside the J-box mounting plate (FIG. 52-1). 5. Insert ground (-) cable, from vehicle battery, through cable gland (FIGS 52-1 and 52-1A).
  • Page 53 STEP 5 - CONNECT POWER & GROUND CABLES TO J-BOX - Continued POSITIVE (+) 7. Remove nut from negative (-) BATTERY CABLE battery terminal (FIG. 53-1). Disconnect negative (-) battery cable (FIG. 53-1). POSITIVE (+) BATTERY TERMINAL NEGATIVE (-) BATTERY CABLE 8.

  • Page 54: Step 6 - Attach Stow Light To Trailer

    STEP 6 - ATTACH STOW LIGHT TO TRAILER NOTE: Stow light will warn vehicle driver if the Liftgate is not stowed. Light must be positioned so the driver can see the light from the driver’s side view mirror. 1. Position stow light on trailer as shown in FIGS. 54-1 and 54-1A.
  • Page 55 STEP 6 - ATTACH STOW LIGHT TO TRAILER - Continued 2. Knock out plastic plug from the cable gland as shown in FIG. 55-1A. Connect stow light to stow light har- ness at J-box (FIGS. 55-1 and 55-1B). GROUND (-) STUD FIG.
  • Page 56 STEP 6 - ATTACH STOW LIGHT TO TRAILER - Continued 3. Replace J-box cover as shown in FIG. 56-1. Torque bolts to 18 - 20 lb-ft. LOCK NUT, 5/16”-18 (4 PLACES) FENDER WASHER, 5/16” X 3/4” O.D. (4 PLACES) HEX BOLT, 5/16”-18 X 4-3/4”...

  • Page 57: Step 7 - Platform Adjustment

    STEP 7 - PLATFORM ADJUSTMENT CAUTION Operate Liftgate with caution and no load until installation is complete. NOTE: Refer to Operating Instructions decal and applicable WARNING & CAUTION decals. 1. Lower platform to 6” above ground level (FIG. 57-1). 6” LOWER PLATFORM FIG.
  • Page 58 STEP 7 - PLATFORM ADJUSTMENT- Continued 3. Unfold fl ipover (FIG. 58-1). FLIPOVER UNFOLD FLIPOVER FIG. 58-1 4. Lower platform to ground level (FIG. 58-2). Ensure platform tip and shackle touch ground at the same time (FIG. 58-2). If platform tip or shackle don’t touch ground, loosen the adjuster bolt lock nuts on both sides of the unit (FIG.
  • Page 59 STEP 7 - PLATFORM ADJUSTMENT- Continued 5. Raise platform to trailer fl oor height and level it with trailer fl oor (FIG. 59-3). Use adjustment bolts on LH and RH lift arms to raise or lower platform (FIG. 59-1A). Torque bolts to 100 lb-ft. LOCK NUT, 5/8”...
  • Page 60 STEP 7 - PLATFORM ADJUSTMENT- Continued CAUTION To prevent stop roller from binding, do not overtighten bolts on stop roller. Allow 1/16” gap on each side of stop roller. 6. Remove and unbolt stop roller from initial hole in slider stop bracket (FIGS. 60-1 and 60-1A). Push the platform toward the rear sill until approximate- ly 5/8”...
  • Page 61 STEP 7 - PLATFORM ADJUSTMENT- Continued CAUTION Operate Liftgate with caution and no load until installation is complete. NOTE: Refer to Operating Instructions decal and applicable WARNING & CAUTION decals. 7. Ensure platform is fl ush with vehicle fl oor. Use adjustment bolts, located at stop roll- ers, to adjust platform end to approximately 5/8”...

  • Page 62: Step 8 - Attach Sliding Axle Stops (If Required)

    STEP 8 - ATTACH SLIDING AXLE STOPS (IF REQUIRED) CAUTION The sliding axle assembly on a trailer can collide with a Liftgate mounted on the slide rails. To prevent damage to Liftgate and trailer, install stops on the slide rails to keep the sliding axles from hitting Liftgate. Refer to Liftgate clearance dimensions in this section of the manual.

  • Page 63: Step 9 - Attach Safety Chain

    STEP 9 - ATTACH SAFETY CHAIN 1. Stow Liftgate all the way in until slide mechanism hits the rail stops (FIGS. 63-1 and 63-1B). 2. Raise the platform until it presses RAIL STOPS against the bumper stops (FIGS. 63-1A (2 PLACES) and 63-1B).
  • Page 64 STEP 9 - ATTACH SAFETY CHAIN - Continued 3. Ensure the latch is in locked position (FIGS. 64-1 and 64-1A). LATCH FIG. 64-1A LOCKING LIFTGATE IN STOWED POSITION (LH SIDE SHOWN) FIG. 64-1 DRAFT 05-03-24...
  • Page 65 STEP 9 - ATTACH SAFETY CHAIN - Continued CHAIN MOUNTING 4. Hook chain to platform (FIG. 65-1). WELDMENT TACK Then, position chain mounting weld- 1/4” ment to bottom of crossmembers. Keep 1/2” to 3/4” slack in chain. 5. Tack weld the chain mount- ing weldment as shown in FIG.

  • Page 66: Attach Decals

    ATTACH DECALS CAUTION DECAL CAUTION DECAL P/N 282683-05 P/N 282682-05 DECAL “A” DECAL “F” OPERATION DECAL CAPACITY DECAL DECAL “B” (REFER TO TABLE 66-1) P/N 283024-03 DECAL “C” FIG. 66-1 MODEL ORDER P/N DECAL “C” GPSLR/GPSLRT-35 220388-04 3500 LBS. (1600 KG) GPSLR/GPSLRT-44 253155 4400 LBS.
  • Page 67 ATTACH DECALS - Continued DECAL SHEET P/N 282522-01 FIG. 67-1 DRAFT 05-03-24...

  • Page 68: Decal Positions

    DECAL POSITIONS UP DECAL (P/N 299038-01) MAXON PLATE P/N 280004-01 DOWN DECAL (P/N 299038-01) BATTERY WARNING DECAL SERIAL PLATE (REF) (INSIDE J-BOX COVER) P/N 283023-01 QR PARTS DECAL P/N 299349-04 DECAL “K” DECAL “K” DECAL DECAL “L” “L” DECAL DECAL “H”...
  • Page 69 DECAL POSITIONS - Continued DECAL SHEET P/N 267432-03 FIG. 69-1 DRAFT 05-03-24...

  • Page 70: System Diagrams

    SYSTEM DIAGRAMS PUMP & MOTOR SOLENOID OPERATION - SINGLE PUMP LOCK VALVE (S2) (2 PLACES) MOTOR LOCK VALVE (S2) (RH CYLINDER SHOWN) FIG. 70-2 LOCK VALVE (S3) STARTER VALVE S1 SOLENOID POWER UNIT LOCK VALVE (S3) FIG. 70-1 (BI-DIRECTIONAL) FIG. 70-3 POWER UNIT MOTOR &...

  • Page 71: Pump & Motor Solenoid Operation - Dual Pumps

    SYSTEM DIAGRAMS - Continued PUMP & MOTOR SOLENOID OPERATION - DUAL PUMPS LOCK VALVE (S2) STARTER (2 PLACES) SOLENOID 2 MOTOR 2 LOCK VALVE (S2) (RH CYLINDER SHOWN) FIG. 71-2 S1 VALVE LOCK VALVE (S3) STARTER MOTOR #1 SOLENOID #1 POWER UNIT LOCK VALVE (S3) FIG.

  • Page 72: Hydraulic Schematic - Gravity Down

    SYSTEM DIAGRAMS - Continued HYDRAULIC SCHEMATIC - GRAVITY DOWN HYDRAULIC MOTOR LH CYLINDER RH CYLINDER HYDRAULIC LOCK VALVE (BI-DIRECTIONAL) HYDRAULIC HYDRAULIC LOCK VALVE LOCK VALVE (BI-DIRECTIONAL) FLOW (BI-DIRECTIONAL) CONTROL VALVE (3 GPM) TANK C1 OUTLET C2 OUTLET RETURN PORT PORT 1800 PSI AUX, PUMP ASSEMBLY...

  • Page 73: Hydraulic Schematic - Power Down

    SYSTEM DIAGRAMS - Continued HYDRAULIC SCHEMATIC - POWER DOWN HYDRAULIC MOTOR LH CYLINDER RH CYLINDER HYDRAULIC LOCK VALVE (BI-DIRECTIONAL) FLOW CONTROL HYDRAULIC HYDRAULIC VALVE (3 GPM) LOCK VALVE LOCK VALVE (BI-DIRECTIONAL) (BI-DIRECTIONAL) C2 OUTLET C1 OUTLET TANK PORT PORT RETURN (PLUGGED) 1800 PSI AUX, PUMP...

  • Page 74: Electrical Schematic, 12V, Gravity Down, With Max Ecu

    SYSTEM DIAGRAMS - Continued ELECTRICAL SCHEMATIC, 12V, GRAVITY DOWN, WITH MAX ECU NOTE: BOTH WIRES FROM SWITCH MAY BE CON- NECTED TO EITHER TERMI- NAL FOR PD ON DEMAND OPERA- TION. NOTE: RED LED WILL LIGHT FOR MAIN SW, SW1, OR SW2 IF FUSE IS BLOWN.
  • Page 75 SYSTEM DIAGRAMS - Continued ELECTRICAL SCHEMATIC, 12V, GRAVITY DOWN, WITH MAX ECU - Continued FIG. 75-1 DRAFT 05-03-24...

  • Page 76: Electrical Schematic, 12V, Power Down, With Max Ecu

    SYSTEM DIAGRAMS - Continued ELECTRICAL SCHEMATIC, 12V, POWER DOWN, WITH MAX ECU NOTE: RED LED WILL LIGHT FOR MAIN SW, SW1, OR SW2 IF FUSE IS BLOWN. FIG. 76-1 DRAFT 05-03-24...
  • Page 77 SYSTEM DIAGRAMS - Continued ELECTRICAL SCHEMATIC, 12V, POWER DOWN, WITH MAX ECU - Continued FIG. 77-1 DRAFT 05-03-24...

  • Page 78: Electrical Schematic 12V/24V, Gravity Down

    SYSTEM DIAGRAMS - Continued ELECTRICAL SCHEMATIC 12V/24V, GRAVITY DOWN NOTE: BOTH WIRES FROM SWITCH MAY BE CON- NECTED TO EITHER TERMI- NAL FOR PD ON DEMAND OPERA- TION. NOTE: RED LED WILL LIGHT FOR MAIN SW, SW1, OR SW2 IF FUSE IS BLOWN. GRAVITY ON (UNMARKED) FIG.
  • Page 79 SYSTEM DIAGRAMS - Continued ELECTRICAL SCHEMATIC, 12V/24V, GRAVITY DOWN - Continued FIG. 79-1 DRAFT 05-03-24...

  • Page 80: Electrical Schematic, 12V/24V, Power Down

    SYSTEM DIAGRAMS - Continued ELECTRICAL SCHEMATIC, 12V/24V, POWER DOWN NOTE: RED LED WILL LIGHT FOR MAIN SW, SW1, OR SW2 IF FUSE IS BLOWN. FIG. 80-1 DRAFT 05-03-24...
  • Page 81 SYSTEM DIAGRAMS - Continued ELECTRICAL SCHEMATIC, 12V/24V, POWER DOWN - Continued FIG. 81-1 DRAFT 05-03-24...

  • Page 82: Options

    OPTIONS KITS PART NO. ELECTRICAL CIRCUIT BREAKER (150 AMP) 296504-150 HAND HELD CONTROL 211185-01 WORK LIGHT 289175-01 DUAL CONTROL,192” LG CABLE 289235-01 STREET SIDE CONTROL, 96” LG CABLE 289235-02 UNIVERSAL CAB CUT-OFF SWITCH 298905-01 MECHANICAL STOW UNLOCK HANDLE, 20” LG. 289160-04 RAILING INSTALLATION, GPSLR / RA 299021-01...

  • Page 83: Pre-Delivery Inspection Form

    PRE-DELIVERY INSPECTION FORM Model:______________________ Date: ____________________ Serial Number: _______________ Technician: _______________ Pre-Installation Inspection: Operation Inspection: Correct model Correct capacity NOTE: The following times are for 60” bed Correct platform size Correct options height, steel platform with aluminum fl ipover, Exxon Univis HVI-13 hydrau- Manuals &...
  • Page 84 DRAFT 05-03-24...

This manual is also suitable for:

Gpslr-35Gpslr-44Gpslr-55Gpslrt-33Gpslrt-44Gpslrt-55 ... Show all

Table of Contents