Maxon GPTWR-25, GPTWR-3, GPTWR-5, GPTWR-4 Installation Manual

M-17-06

JULY 2017

To fi nd maintenance & parts information for your GPTWR Liftgate,
go to www.maxonlift.com. Click the PRODUCTS, TUK-A-WAY &

GPTWR buttons. Open the Maintenance Manual in the PRODUCT
DOCUMENTATION window. For parts, click on the PARTS PORTAL,
TUK-A-WAY & GPTWR buttons.

© MAXON Lift Corp. 2017

TABLE OF CONTENTS

SUMMARY OF CHANGES: M-17-06 ................................................................................... 4

WARNINGS ........................................................................................................................... 5

SAFETY INSTRUCTIONS ....................................................................................................6

NOTICE .................................................................................................................................6

STANDARD LIFTGATE COMPONENTS .............................................................................. 7

GPTWR INSTALLATION PARTS BOX .................................................................................. 8

GPTWR-SERIES MANUALS & DECALS.............................................................................. 9

VEHICLE REQUIREMENTS ............................................................................................... 10

CENTER OF MASS ............................................................................................................. 13

STEP 1 - ATTACH EXTENSION PLATE TO VEHICLE ....................................................... 15

BOLT EXTENSION PLATE .................................................................................. 15

WELD EXTENSION PLATE (ALTERNATE METHOD) ........................................ 18

STEP 2 - WELD LIFTGATE TO VEHICLE .......................................................................... 20

STEP 3 - ATTACH OPTIONAL BATTERY BOX & FRAME TO VEHICLE (IF EQUIPPED) . 24

STEP 4 - RUN POWER CABLE .......................................................................................... 32

STEP 5 - CONNECT POWER CABLE ................................................................................ 34

STEP 6 - CONNECT GROUND CABLE (RECOMMENDED) ............................................. 36

STEP 7 - INSTALL CONTROL SWITCH ............................................................................. 37

STEP 8 - CHECKING HYDRAULIC FLUID ......................................................................... 39

STEP 9 - CONNECT POWER CABLE TO BATTERY ......................................................... 41

STEP 10 - REMOVE LOCKING ANGLES & KNUCKLE BOLTS, CHECK FOR

INTERFERENCE ................................................................................................................. 42

STEP 11 - INSTALL OPENER & LICENSE PLATE BRACKET WITH

ICC BUMPER OR UNDERRIDE ......................................................................................... 47

INSTALLATION WITH ICC BUMPER ................................................................ 47

INSTALLATION WITH UNDERRIDE ................................................................. 49

STEP 12 - ADJUST PLATFORM (IF REQUIRED) .............................................................. 51

STEP 13 - FINISH WELDING LIFTGATE TO VEHICLE ..................................................... 53

STEP 14 - BOLT STEPS TO EXTENSION PLATE ............................................................ 54

STEP 15 - ADJUST WALK RAMP PADS ............................................................................ 58

STEP 16 - LUBE GREASE FITTINGS AS NEEDED ........................................................... 59

APPLY DECALS ................................................................................................................. 60

DECALS & PLATES ........................................................................................................... 62

TOUCH-UP PAINTED OR GALVANIZED FINISH .............................................................. 63

SYSTEM DIAGRAMS ......................................................................................................... 64

PUMP & MOTOR SOLENOID OPERATION ....................................................................... 64

HYDRAULIC SCHEMATIC (POWER DOWN) .................................................................... 65

ELECTRICAL SCHEMATIC (POWER DOWN) ................................................................... 66

GPTWR ELECTRICAL VALUES ......................................................................................... 67

OPTIONS ............................................................................................................................68

OPTIONAL LIFTGATE COMPONENTS .............................................................................. 68

SUMMARY OF CHANGES: M-17-06

PAGE DESCRIPTION OF CHANGE

5 Changed WARNING for welding galvanized steel to reference AWS D19.0.

7 Main assembly shows new bolt-on mounting plates.

Added Installation Parts Box Tables A, B & C. Added new molded, toggle switch

8

9 Updated GPTWR series manuals and decals part numbers.

17 Added welding note and specifi cations for bolt-on extension plate.

18

20 Added illustration and table showing mounting plates for various frame widths.

20-23

assembly, Added new 1/2” X 5/16” fl at washer, 1-1/2” long self-tapping screws for
control switch assembly, and 1/2” long self-tapping screws for rubber loom clamp.
Added ground cable assembly, 2 GA X 48’ LG.

Removed WARNING for welding galvanized parts. Added note for recommended

practices for welding galvanized steel to refer to AWS (American Welding Soci-

ety) D19.0 Welding Zinc-Coated Steel.

Updated Step 2: Weld Liftgate to Vehicle instructions. Bolt-on mounting plates
are not welded to main frame. With bolt-on mounting plates, it’s not necessary to
remove split loom.

23 Added electrical welder Caution for connecting welder.

27 Removed instruction and image regarding welding galvanized decal.

34, 35, 38, 65Updated power unit has no thermal switch. Fused power connection shows new 10

AMP fuse holder assembly.

36 Added new instructions to connect ground cable supplied with parts Box B.

38 Updated hydraulic fl uid reservoir fi ll level.

40, 47, 49,

10, 55

47-50 Made separate procedures for GPT’s equipped with ICC bumper or underride.

55 Added 1/2”-13 fl ange lock nuts for mounting steps to extension plate.

62 Removed galvanized warning decal.

63 Updated Platform Warning Decal, P/N 281189-02

66 Updated electrical schematic show cycle counter (if equipped).

67 Added GPTWR electical values.

68, 69

Added instructions for disconnecting and reconnecting both negative (-) and posi­tive (+) battery connections.

Updated hand-held, street side and dual control kits in the OPTIONS table. Re­moved cold galvanize spray (16 OZ) and bright zinc spray paint (16 OZ). Removed
painted step kit options.

Comply with the following WARNINGS and SAFETY INSTRUCTIONS while installing
Liftgates. See Operation Manual for operating safety requirements.

WARNINGS

• Do not stand, or allow obstructions, under the platform when lowering the Liftgate. Be sure your
feet are clear of the Liftgate.

• Keep fi ngers, hands, arms, legs, and feet clear of moving Liftgate parts (and platform
edges) when operating the Liftgate.

• Correctly stow platform when not in use. Extended platforms could create a hazard for
people and vehicles passing by.

• Make sure vehicle battery power is disconnected while installing Liftgate. Connect vehicle

battery power to the Liftgate only when installation is complete or as required in the installation
instructions.

• If it is necessary to stand on the platform while operating the Liftgate, keep your feet and any

objects clear of the inboard edge of the platform. Your feet or objects on the platform can become
trapped between the platform and the Liftgate extension plate.

• Never perform unauthorized modifi cations on the Liftgate. Modifi cations may result in early failure

of the Liftgate and may create hazards for Liftgate operators and maintainers.

• Recommended practices for welding on steel parts are contained in the current AWS (American
Welding Society) D1.1 Structural Welding Code - Steel. Damage to Liftgate and/or vehicle, and

personal injury can result from welds that are done incorrectly.

!

WARNING

• Recommended practices for welding galvanized steel are contained in the current AWS (Ameri­can Welding Society) D19.0 Welding Zinc-Coated Steel. Damage to Liftgate and/or vehicle, and

personal injury can result from welds that are done incorrectly.

11921 Slauson Ave. Santa Fe Springs, CA. 90670 [phone] FAX [phone]

5

SAFETY INSTRUCTIONS

• Read and understand the instructions in this Installation Manual before installing Liftgate.

• Before operating the Liftgate, read and understand the operating instructions in Operation
Manual.

• Comply with all WARNING and instruction decals attached to the Liftgate.

• Keep decals clean and legible. If decals are illegible or missing, replace them. Free replacement
decals are available from Maxon Customer Service.

• Consider the safety and location of bystanders and location of nearby objects when operating the

Liftgate. Stand to one side of the platform while operating the Liftgate.

• Do not allow untrained persons to operate the Liftgate.

• Wear appropriate safety equipment such as protective eyeglasses, faceshield and clothing while

performing maintenance on the Liftgate and handling the battery. Debris from drilling and contact
with battery acid may injure unprotected eyes and skin.

• Be careful working by an automotive type battery. Make sure the work area is well ventilated and

there are no fl ames or sparks near the battery. Never lay objects on the battery that can short the
terminals together. If battery acid gets in your eyes, immediately seek fi rst aid. If acid gets on your
skin, immediately wash it off with soap and water.

• If an emergency situation arises (vehicle or Liftgate) while operating the Liftgate, release the con-

trol switch to stop the Liftgate.

SAFETY INSTRUCTIONS

• A correctly installed Liftgate operates smoothly and reasonably quiet. The only noticeable noise

during operation comes from the power unit while the platform is raised and lowered. Listen for
scraping, grating and binding noises and correct the problem before continuing to operate 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.

• Installers of the liftgate should ensure that all trucks and trailers are equipped with grab

handles as needed. Refer to Technology Maintenance Council (TMC) RP 1428: Entry
And Egress Guidelines for Vehicles With Fold-Under Type Liftgates.

11921 Slauson Ave. Santa Fe Springs, CA. 90670 [phone] FAX [phone]

6

STANDARD LIFTGATE COMPONENTS

!

CAUTION

Unpacking the Liftgate on unlevel surface may allow heavy components to slide off
when shipping bands are cut. Injury and equipment damage could result. Before
the shipping bands are cut, put Liftgate on level surface that will support 1500 lbs.
When unpacking the Liftgate, remove heavy components carefully to avoid injury
and damage.

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 [phone] or

Send e-mail to [e-mail]

STEP KIT

ASSEMBL Y

(DUAL STEPS

SHOWN)

EXTENSION PLATE

MAIN

ASSEMBLY

PARTS

BOXES

11921 Slauson Ave. Santa Fe Springs, CA. 90670 [phone] FAX [phone]

OPENER

TYPICAL LIFTGATE COMPONENTS FOR SHIPMENT

(OPTIONAL COMPONENTS NOT SHOWN)

FIG. 7-1

7

GPTWR INSTALLATION PARTS BOX

ITEM NOMENCLATURE OR DESCRIPTION QTY. PART NUMBER

REF PARTS BOX A 1 297502-01

1 SPRING CLIP, 1/2” x 1-3/8” 10 050079
2 PLASTIC TIE 2 206864
3 #10 RUBBER LOOM CLAMP 2 801681
4 CABLE ASSEMBLY, 175 AMPS, 38 FT LG. 1 264422

SELF-TAPPING SCREW, 10 X 1/2” LG. 2 030458

5

GROUND CABLE ASSEMBLY, 2 GA X 48” LG. 1 251871-26

6

PARTS BOX A WITH POWER CABLE

TABLE 8-1

ITEM NOMENCLATURE OR DESCRIPTION QTY. PART NUMBER

REF PARTS BOX B 1

1 SHIM, 2-1/2” X 1” X 16 GAUGE 2 264732
2 TOGGLE SWITCH ASSEMBLY 1 296855-01
3 FLAT WASHER, 1/2” X 5/16” THICK 2 902000-13
4 HEX NUT, 1/2”-13 2 901011-9
5 CAP SCREW, 1/2’’-13 X 1-1/2” LG. 2 900035-3
6 INSTALLATION BRACKET 2 269462-01
7 LUG, 2 GAUGE, COPPER, 5/16” 1 906497-02
8 SCREW, SELF TAPPING, #10-24 X 1-1/2” LG 2 900057-7

9 HEAT SHRINK TUBING, 3/4” X 1-1/12” LG. 1 253316-04
10 FLAT, 2-1/2” X 1” X 1/8” THICK 2 201999
11 LICENSE PLATE BRACKET KIT 1 287015-01

297049-02

PARTS BOX B WITHOUT POWER CABLE, GROUND CABLE, OR FRAME CLIPS

TABLE 8-2

ITEM NOMENCLATURE OR DESCRIPTION QTY. PART NUMBER

REF PARTS BOX C 1 297502-02

1 SPRING CLIP 20 050079

11921 Slauson Ave. Santa Fe Springs, CA. 90670 [phone] FAX [phone]

2 PLASTIC TIE 4 206864

3 GROMMET, 1” DIA, 2 HOLES 1 266428-09

4 CABLE ASSY, 175 AMP 38 FT LG 1 264422

5 GROUND CABLE ASSY, 2 GA X 38FT LG 1 269191-01

6 #10 LOOM CLAMP 2 801681

SELF-TAPPING SCREW, 10 X 1/2” LG. 2 030458

7

PARTS BOX C WITH GROUND CABLE

TABLE 8-3

8

GPTWR-SERIES MANUALS & DECALS

NOTE: To fi nd maintenance information for your GPTWR Liftgate, go to www.max-

onlift.com. Click the PRODUCTS, TUK-A-WAY & GPTWR buttons. Open

the Maintenance Manual in the PRODUCT DOCUMENTATION window. For
parts, click on the PARTS PORTAL, TUK-A-WAY & GPTWR buttons.

ITEM NOMENCLATURE OR DESCRIPTION QTY. PART NUMBER

297225-11 (GPTWR-25)

REF

1
2
3

DECAL & MANUAL KIT 1

INSTALLATION MANUAL (GPTWR) 1 M-17-06

OPERATION MANUAL (GPT & GPTWR) 1 M-17-07

DECALS (SEE DECAL PAGES IN THIS MANUAL) 1

TABLE 9-1

297225-12 (GPTWR-3)

297225-13 (GPTWR-4)

297225-14 (GPTWR-5)

(ALL GPTWR’S)

11921 Slauson Ave. Santa Fe Springs, CA. 90670 [phone] FAX [phone]

9

VEHICLE REQUIREMENTS

NOTE: BODY maximum and minimum operating bed height, for GPTWR models

with standard platform, are as follows.

Maximum height is 55” (Unloaded). Loaded height is 49”. On vehicle bodies

equipped with swing-open doors, extension plate and vehicle body must be
modifi ed to install this Liftgate.

NOTE: Make sure vehicle is parked on level ground while preparing vehicle and

installing Liftgate.

NOTE: Dimensions are provided as reference for fi tting Liftgate to vehicle body.

1. Check for correct clearances (FIG. 10-1 & 10-2) on

vehicle to prevent interference between vehicle
and Liftgate.

33”

29-5/8”

15”

23-7/8”

55” MAX. BED HEIGHT
49” LOADED BED HEIGHT

15-5/8” TO 21-5/8”

22”

GPTWR-25 & GPTWR-3 LIFTGATE CLEARANCE DIMENSIONS

FIG. 10-1

39-1/2”

35-5/16”

27-7/8”

15”

22”

12”

14-3/4”

13-5/16”

11921 Slauson Ave. Santa Fe Springs, CA. 90670 [phone] FAX [phone]

55” MAX. BED HEIGHT
49” LOADED BED HEIGHT

GPTWR-4 & GPTWR-5 LIFTGATE CLEARANCE DIMENSIONS

22-3/8”

12”

16-3/16” TO 22-3/16”

FIG. 10-2

10

VEHICLE REQUIREMENTS - Continued

2. Check for correct clearances between walk ramp, walk ramp box, and the extension
plate (FIGS. 11-1A and 11-1B) to prevent interference.

NOTCH

(4 PLACES)

27-1/2”

20-1/2”

1-1/2”

9-3/16”

2-1/4”

EXTENSION PLATE

8-3/8”

WALK RAMP

LATCH

25” MIN.
32-1/2” MAX.
(RAMP WIDTH)

WALK RAMP PAD

(2 PLACES)

WALK RAMP BOX

CLEARANCE DIMENSIONS

(FOR REFERENCE ONLY)

FIG. 11-1B

2-1/4”

1-1/2”

H

SILL

H

RAMP

H

= 8-3/8” - H

RAMP

H

is the height of the vehicle body sill.

SILL

H

is the height of the ramp (max).

RAMP

- 1/8” clearance

SILL

11921 Slauson Ave. Santa Fe Springs, CA. 90670 [phone] FAX [phone]

GPTWR LIFTGATE WITH WALK RAMP BOX

FIG. 11-1A

11

VEHICLE REQUIREMENTS - Continued

!

WARNING

Incorrect modifi cation of vehicle frame and/or body could contribute to serious
mechanical failure of the vehicle. Serious injury to operator, motorists, and
bystanders could result. Installer is responsible for ensuring vehicle body and
frame modifi cation do not adversely affect the integrity of the body and frame.
If unsure about modifying vehicle, installer should consult truck/trailer body
manufacturer.

CAUTION

To prevent aluminum platform from being damaged, make sure vehicle frame
is cut correctly and rear sills are modifi ed if over 4-1/8” in height. If the cutouts
are incorrect, platform may hit vehicle frame or underbody when stowing Lift­gate. If rear sill is over 4-1/8” in height, bottom of the platform may hit the sill.

NOTE: Dimensions, shown in illustration below, are maximums except as indicated.
NOTE: The platform cutout area for truck frame, shown below, is required to prevent

frame interference when platform is being stowed and unstowed. For trailers,
refer to instructions supplied with trailer mounting kit for Liftgate.

3. Fit the Liftgate to vehicle body by cutting vehicle frame as shown in FIG. 12-1.

TRUCK BODY

REAR SILL

10”

TRUCK
FRAME

PLATFORM CLEARANCE CUTOUT AREA

(WITHIN DASHED LINES)

BODY FLOOR

BODY CROSS-

MEMBERS

LONG SILL

WOODEN SPACER

11921 Slauson Ave. Santa Fe Springs, CA. 90670 [phone] FAX [phone]

VEHICLE FRAME CUTOUT FOR GPTWR PLATFORM CLEARANCE

22”

(TRUCK FRAME IS SHOWN)

FIG. 12-1

12

CENTER OF MASS

CENTER OF MASS

10-1/4”

11-1/2”

GPTWR-25 & GPTWR-3 CENTER OF MASS

(PLATFORM AT BED HEIGHT)

FIG. 13-1

16-1/8”

17-1/4” CENTER OF MASS

11921 Slauson Ave. Santa Fe Springs, CA. 90670 [phone] FAX [phone]

GPTWR-25 & GPTWR-3 CENTER OF MASS

(STOWED POSITION)

FIG. 13-2

13

CENTER OF MASS - Continued

CENTER OF MASS

11-3/8”

11-3/16”

GPTWR-4 & GPTWR-5 CENTER OF MASS

(PLATFORM AT BED HEIGHT)

FIG. 14-1

16-3/16”

22-3/4”

CENTER OF MASS

GPTWR-4 & GPTWR-5 CENTER OF MASS

(STOWED POSITION)

FIG. 14-2

11921 Slauson Ave. Santa Fe Springs, CA. 90670 [phone] FAX [phone]

14

STEP 1 - ATTACH EXTENSION PLATE TO VEHICLE

CAUTION

CAUTION

To preserve the corrosion-resistant properties of the galvanized fi nish,
MAXON recommends bolting the galvanized extension plate to vehicle.

NOTE: GPTWR Liftgate extension plate comes with bolt holes so it can be

bolted to vehicle body with optional bolt kit. GRADE 8 bolts are re­quired. MAXON recommends getting the optional extension plate
hardware kit listed in OPTIONS section. Vehicle body must be drilled
according to instructions. Extension plate may also be welded to
vehicle body. Do the following bolting or welding instructions for the
extension plate.

BOLT EXTENSION PLATE

1. Mark and drill holes into rear sill as shown in FIGS. 15-1 and 16-1.

96”

94-1/2”

19”

14”

1-1/2”

24”

6-1/2”

34”

41”

REAR

SILL

48”

55

62”

72”

77”

82”

USE 9/16” DRILL

(19 PLACES)

1-1/4”

11921 Slauson Ave. Santa Fe Springs, CA. 90670 [phone] FAX [phone]

3-1/8”

6-1/2”

REAR SILL - HOLE LOCATIONS FOR 96” WIDE VEHICLE

FIG. 15-1

15

STEP 1 - ATTACH EXTENSION PLATE TO VEHICLE -

Continued

102”

100-1/2”

95-1/2”

85”

80”

75”

65”

58”

51”

44”

37”

1-1/2”

27”

22”

17”

6-1/2”

REAR

SILL

USE 9/16” DRILL

(19 PLACES)

REAR SILL - HOLE LOCATIONS FOR 102” WIDE VEHICLE

FIG. 16-1

1-1/4”

6-1/2”

3-1/8”

11921 Slauson Ave. Santa Fe Springs, CA. 90670 [phone] FAX [phone]

16

STEP 1 - ATTACH EXTENSION PLATE TO VEHICLE -

Continued

CAUTION

CAUTION

The mating surface between the bolt-on extension plate and vehicle rear sill
must be as fl at as possible. Interference between the mating surfaces could
result in a distorted top surface of extension plate when all the bolts are
tightened. Distorted extension plate can also make the dual steps diffi cult to
install correctly. Remove interference or shim rear sill to eliminate or reduce
the possibility of a distorted extension plate.

NOTE: Do not tighten extension plate bolts and lock nuts until:

• All the bolts and lock nuts are in place.

• Mating surfaces of extension plate and rear sill are made fl at as possible.

• Top of extension plate is fl ush with top of rear sill.

NOTE: Weld the LH and RH ends of the extension plate to vehicle body as shown

in FIG. 17-1 if any of the following conditions apply.

• Bolt holes are not accessible on the corner posts of the vehicle body.

• Liftgate will be used for dock loading applications.

• As required by body/trailer manufacturer

2. Bolt extension plate to vehicle as shown in FIG. 17-1. If necessary, reposition ex-

tension plate so top surface is fl ush with top surface of sill. Then, torque bolts and

lock nuts to 105 +/-20 lb-ft.

BOLTS

(KIT ITEM)

VEHICLE

BODY

TEARDROP

LOCK NUTS

(KIT ITEMS)

WELD VERT. EDGE

IF NOT BOLTING

3/16”

EXTENSION

PLATE

WELD VERT. EDGE
IF NOT BOLTING

IF NO CORNER POST ACCESS FOR

BOLT & NUT, WELD OUTSIDE EDGES AS SHOWN.

11921 Slauson Ave. Santa Fe Springs, CA. 90670 [phone] FAX [phone]

3/16”

BOLTING EXTENSION PLATE (96” WIDE EXTENSION PLATE SHOWN)

NOTE: An optional 102” wide extension kit is available for 102” wide vehicles. Refer to

Instruction Sheet M-09-06 supplied with kit.

FIG. 17-1

17

STEP 1 - ATTACH EXTENSION PLATE TO VEHICLE -

Continued

WELD EXTENSION PLATE (ALTERNATE METHOD)

CAUTION

To preserve the corrosion-resistant properties of the galvanized fi nish,
MAXON recommends bolting the galvanized extension plate to vehicle.

CAUTION

To protect the original paint system if equipped, a 3” wide area of paint must
be removed from all sides of the weld area before welding.

NOTE: Before welding extension plate to vehicle body, make sure:

• Inboard edge of extension plate is fl ush with the top of sill on vehicle body.

• Top surface of extension plate is level with the ground.

1. Center the extension plate on

vehicle body. Weld the extension
plate to vehicle body sill as shown

in FIGS. 18-1 and 19-1.

3/16”

3/16”

WELD LENGTH & SPACE:
2”- 11 3/4” ( 96”W VEHICLE)
2”- 12 1/2” (102”W VEHICLE)

EXTENSION

PLATE

11921 Slauson Ave. Santa Fe Springs, CA. 90670 [phone] FAX [phone]

VEHICLE

BODY

3/16”

EXTENSION PLATE WELDS - VIEWED FROM ABOVE

FIG. 18-1

18

STEP 1 - ATTACH EXTENSION PLATE TO VEHICLE -

Continued

EXTENSION

PLATE

VEHICLE

BODY

WELD LENGTH & SPACE:

3/16”

EXTENSION PLATE WELDS - VIEWED FROM UNDERNEATH

FIG. 19-1

NOTE: During installation of liftgate, installation brackets keep the heel of the plat-

form level with extension plate and maintain a ¾” gap between extension
plate and heel of platform. The extension plate has bolt holes for bolting on
the installation brackets provided in parts box.

2”- 11 3/4” ( 96”W VEHICLE)
2”- 12 1/2” (102”W VEHICLE)

2. Bolt 2 installation brackets (parts bag items) on the

extension plate as shown in FIG. 19-2. Tighten hex

nuts securely.

HEX NUT

1/2”-13

(2 PLACES)

BRACKET

(2 PLACES)

CAP SCREW

1/2”-13 X 1-1/2” LG.

(2 PLACES)

EXTENSION

PLATE

11921 Slauson Ave. Santa Fe Springs, CA. 90670 [phone] FAX [phone]

BOLTING ON INSTALLATION BRACKETS

FIG. 19-2

19

STEP 2 - WELD LIFTGATE TO VEHICLE

NOTE: GPTWR Liftgates are equipped with mounting plates installed at the

factory. Mounting plate widths are shown based upon truck or trailer
frame widths. Ensure you have the correct mounting plate kit for your
application.

If it’s necessary to unbolt mounting plates from main frame (FIG 20-1), torque
mounting plate nuts and bolts 220-240 lb-ft (GPTWR-25/GPTWR-3) or 350-375

lb-ft (GPTWR-4/GPTWR-5).

BOLT &

LOCK NUT

(6 PLACES)

RH

PLATE

“D” OUTSIDE

“D” INSIDE

LH

PLATE

BOLT &

LOCK NUT

(6 PLACES)

BOLT ON MOUNTING PLATES FOR INSTALLATION ON TRUCKS &TRAILERS

(REAR VIEW OF LIFTGATE)

FIG. 20-1

LIFTGATE MODEL “D” INSIDE “D” OUTSIDE APPLICATION

34-1/4” 35-1/4” Common truck chassis width

GPTWR-25/GPTWR-3

32-1/4” 33-1/4” Trailer applications
34-7/8” 35-13/16” Trailer applications (91 cm)

LIFTGATE MODEL “D” INSIDE “D” OUTSIDE APPLICATION

GPTWR-4/GPTWR-5

TABLE 20-1

11921 Slauson Ave. Santa Fe Springs, CA. 90670 [phone] FAX [phone]

34-1/4” 35-1/4” Common truck chassis width
34-7/8” 35-13/16” Trailer applications (91 cm)

39” 40” Trailer applications

TABLE 20-2

20

STEP 2 - WELD LIFTGATE TO VEHICLE - Continued

1. Unfold the platform and fl ipover (FIG. 21-1).

LOCKING ANGLES

(REF)

PLATFORM

FLIPOVER

STOP

(2 PLACES)

OPENER

FLIPOVER

MOUNTING

PLATES

2. Unbolt opener from mounting bracket

(shipping position) and save to reinstall
(FIG. 21-1).

PLATFORM & FLIPOVER UNFOLDED

FIG. 21-1

11921 Slauson Ave. Santa Fe Springs, CA. 90670 [phone] FAX [phone]

21