Maxon DMD-22 Manuale utente
© MAXON Lift Corp. 2022
M-21-01
SEPTEMBER 2022
To fi nd maintenance & parts information for your Tool Truck DMD Liftgate, go to www.maxonlift.
com. Click the PRODUCTS, RAILIFT & DMD buttons. Open the Maintenance Manual in the
PRODUCT DOCUMENTATION window. For parts, click on the PARTS PORTAL, RAILIFT &
DMD buttons.
TABLE OF CONTENTS
WARNINGS ........................................................................................................................... 3
NOTICE ................................................................................................................................. 4
VEHICLE REQUIREMENTS ................................................................................................. 5
BODY STRENGTH ................................................................................................................ 5
INSTALLED LIFTGATE ......................................................................................................... 7
LIFTGATE INSTALLATION COMPONENTS ........................................................................ 9
INSTALLATION & MANUALS KITS ................................................................................... 10
STEP 1 - POSITION LIFTGATE ..........................................................................................11
BOLTING LIFTGATE TO BODY ...........................................................................................11
STEP 2 - RUN POWER & GROUND CABLES ................................................................... 12
STEP 3 - CONNECT POWER CABLE ................................................................................ 13
STEP 4 - CONNECT GROUND CABLE ............................................................................. 15
STEP 5 - PRESSURIZE HYDRAULIC SYSTEM ................................................................ 18
STEP 6 - CHECKING HYDRAULIC FLUID ......................................................................... 19
STEP 7 - CONNECTING TAILIGHTS .................................................................................. 21
STEP 8 - REMOVE UPPER SUPPORT FIXTURE ............................................................ 22
DECALS .............................................................................................................................. 23
DECALS & PLATES ........................................................................................................... 25
SYSTEM DIAGRAMS ......................................................................................................... 26
PUMP MOTOR & VALVE OPERATION .............................................................................. 26
HYDRAULIC SCHEMATIC .................................................................................................. 27
ELECTRICAL SCHEMATIC ................................................................................................. 28
ELECTRICAL SCHEMATIC (ABOVE BED MODEL) ........................................................... 29
ELECTRICAL SCHEMATIC - JUMPER HARNESS ASSEMBLY ........................................ 30
DMD ELECTRICAL VALUES & TORQUE VALUES ............................................................ 31
PRE-DELIVERY INSPECTION FORM ................................................................................ 32
3
11921 Slauson Ave. Santa Fe Springs, CA. 90670 (800) 227-4116 FAX (888) 771-7713
• 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.
• 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.
• Correctly stow platform when not in use. Extended platforms could create a hazard for
people and vehicles passing by.
• 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.
• Recommended practices for welding galvanized steel are contained in the current AWS (Ameri-
can 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.
WARNING
!
WARNINGS
Comply with the following WARNINGS and SAFETY INSTRUCTIONS while installing
Liftgates. See Operation Manual for operating safety requirements.
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). For more information go to www.P65Warnings.ca.gov.
WARNING
!
4
11921 Slauson Ave. Santa Fe Springs, CA. 90670 (800) 227-4116 FAX (888) 771-7713
SAFETY INSTRUCTIONS
• 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.
• 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.
• Do not allow untrained persons to operate the Liftgate.
• 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.
• 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.
• 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 only.
• Liftgate installers, not Maxon Lift, are responsible for reviewing and complying with all
applicable Federal, State, and Local regulations pertaining to the truck.
5
11921 Slauson Ave. Santa Fe Springs, CA. 90670 (800) 227-4116 FAX (888) 771-7713
VEHICLE REQUIREMENTS
The DMD is a body-mounted Liftgate
that puts forces on the side walls of truck
bodies (FIG. 5-1). For correct installa-
tion, truck bodies must be strong enough
to withstand the tension, compression
and shear forces shown in FIG. 5-1. Use
TABLE 5-1 to determine the forces that
apply to your Liftgate.
X= Tension on each sidewall
Y= Compression on each sidewall
Z= Shear on each sidewall
X
BED HEIGHT
Z
NOTE: Maximum Operating Bed Height (Unloaded) for body varies depending on
platform.
Refer to TABLE 5-1. Minimum Bed Height is 30” (Loaded).
Do not
install this Liftgate on vehicle bodies equipped with swing open doors.
Consult truck body manufacturer for truck body strength data. Make sure the
forces created by the Liftgate are within the limits prescribed by the truck body
manufacturer.
WARNING
FIG. 5-1
BODY STRENGTH
NOTE: Installer is responsible for ensuring vehicle meets Federal, State, and Local
standards and regulations.
!
Y
64-13/16”
TABLE 5-1
DMD-22 FORCES 99” WIDE 102” WIDE
MODEL CAPACITY P/F SIZE (X) (Y) LB (Z) LB (X) (Y) LB (Z) LB
2200 LB 72” 1103 3098 1117 3136
6
11921 Slauson Ave. Santa Fe Springs, CA. 90670 (800) 227-4116 FAX (888) 771-7713
VEHICLE REQUIREMENTS - Continued
NOTE: Dimensions are provided as reference for fi tting Liftgate to body.
NOTE: Make sure vehicle is parked on level ground while preparing ve-
hicle and installing Liftgate.
1. Check for correct clearances (FIGS. 6-1 and
6-2) on vehicle to prevent interference be-
tween vehicle and Liftgate. Refer to FIG. 6-1
for a standard installation. See FIG. 6-2 and
TABLE 6-1 for above bed options.
PLATFORM
GROUND
VEHICLE
FLOOR
STANDARD DMD
FIG. 6-1
ABOVE BED TRAVEL “A” 1-1/4”
(102” PLATFORM)
3-1/2”
(99” PLATFORM)
MAX BED HEIGHT “BH” 52-3/4” 50-1/2”
COLUMN HEIGHT ABOVE BED “C” 59-1/2” 59-1/2”
DMD ABOVE BED OPTIONS
TABLE 6-1
DMD ABOVE BED OPTIONS
FIG. 6-2
59-1/2”
17”
54” MAX BED
HEIGHT
VEHICLE
FLOOR
“A” ABOVE
BED TRAVEL
15-1/2”
“C”
“BH” MAX
BED HEIGHT
GROUND
PLATFORM
7
11921 Slauson Ave. Santa Fe Springs, CA. 90670 (800) 227-4116 FAX (888) 771-7713
1. With the vehicle parked on
level ground, the columns of
the DMD must be perpendicu-
lar to the ground (vertical) for
the Liftgate to operate correctly
(FIG. 7-1).
INSTALLED LIFTGATE
LIFTGATE INSTALLED ON TRUCK BODY
(COLUMNS SHOWN PERPENDICULAR TO LEVEL GROUND)
FIG. 7-1
LEVEL
VEHICLE REQUIREMENTS - Continued
91° MAX.
NOTE: If Liftgate columns exceed a 91 degree angle from level ground when
installed on body, or if columns cannot be mounted fl ush against rear of
vehicle, a steel fi ller may be used to bridge gap between vehicle body
and Liftgate columns. Make sure the added materials and welds meet the
BODY STRENGTH requirements shown on the previous pages.
8
11921 Slauson Ave. Santa Fe Springs, CA. 90670 (800) 227-4116 FAX (888) 771-7713
VEHICLE REQUIREMENTS - Continued
2. With Liftgate centered on vehicle body, each column
should fi t on the corner posts of vehicle body with
little or no off set (FIG. 8-1). Some off set from corner
posts is allowed on the inboard side of the columns.
Liftgate in stow position extends behind vehicle
body as shown in FIG. 8-1A.
LIFTGATE COLUMNS FITTED TO BODY CORNER
POSTS WITH LITTLE OR NO OFFSET
FIG. 8-1
“W”
88-3/8” (FOR 99” W VEHICLE)
91-3/8” (FOR 102” W VEHICLE)
VEHICLE BODY
CORNER POST
(2 PLACES)
LH
COLUMN
RH
COLUMN
FIG. 8-1A
14-3/4”
LIFTGATE
(RH VIEW)
9
11921 Slauson Ave. Santa Fe Springs, CA. 90670 (800) 227-4116 FAX (888) 771-7713
LIFTGATE INSTALLATION COMPONENTS
TOOL TRUCK DMD & PARTS KIT
FIG. 9-1
LIFTGATE
ELECTRICAL
PARTS KIT
NOTE: Make sure you have 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 [email protected]
10
11921 Slauson Ave. Santa Fe Springs, CA. 90670 (800) 227-4116 FAX (888) 771-7713
To fi nd maintenance & parts information for your DMD Liftgate, go to www.maxonlift.
com. Click the PRODUCTS, RAILIFT & DMD buttons. Open the Maintenance Manual
in the PRODUCT DOCUMENTATION window. For parts, click on the PARTS PORTAL,
RAILIFT & DMD buttons.
INSTALLATION & MANUALS KITS
ITEM NOMENCLATURE OR DESCRIPTION QTY PART NUMBER
REF DMD ELECTRICAL PARTS KIT 1 298882-11-100
1HEAT SHRINK TUBING, 3/4” X 1-1/4” LG. 1 253316-04
2HEAT SHRINK TUBING, 1” X 1-1/2” LG. 2 907169-01
3STARTER SOLENOID, 12VDC 1 297271-01
4HEX BOLT, 1/4”-20 X 1” LG. 2 903107-03
5COPPER LUG, 2 GA, 5/16” 2 906497-02
6CABLE ASSEMBLY, 2 GA, RED, 3/8”, 1/4” RING, 24” LG. 1 212675-24
7CABLE ASSEMBLY, 2 GA, RED, 1/4” RING, 35’ LG. 1 212676-35
8CABLE ASSEMBLY, 2 GA, BLACK, 3/8” RING, 35’ LG. 1 212677-35
9HEX HEAD NUT, 1/4”-20 2 903107-3
10 FLAT WASHER, 1/4” 2 903412-01
11 LOCK WASHER, 1/2” O.D. X 1/4” I.D. 2 902019-3
12 SPRING CLIP 8 050079
13 CIRCUIT BREAKER, 150 AMP 1 907207-02
14 2-BUTTON CONTROL PENDANT, GRAVITY DOWN 1 212516-01
TABLE 10-1
TABLE 10-2
ITEM NOMENCLATURE OR DESCRIPTION QTY PART NUMBER
REF DMD MANUALS KIT 1 298884-11
1INSTALLATION MANUAL 1 M-21-01
2OPERATION MANUAL 1 M-21-02
3DECAL, MAXON 24/7 SUPPORT 1 298634-01
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