Palfinger ILP 33 User manual

OWNER’S MANUAL
ILP 25, 2500 lbs. Capacity
ILP 33, 3300 lbs. Capacity
02/19

ILP 25/33 Owner’s Manual
Rev.1.4 2
ILP 25/33 Owner‘s Manual
Document Part Number: 90-0116-001 / 16-684_90-00_00-01
ECN-M1301, Rev. 1.4, 02-01-19
Copyright © 2019 Palfinger Liftgates LLC.
All rights reserved.
Information in this document is subject to change without notice.
Visit www.palfinger.com for up to date information and notifications.
If you received this product with damaged or missing parts,
contact Palfinger Liftgates at (888)-774-5844
15939 Piuma Ave.
Cerritos, CA 90703
Tel [phone]
Fax [phone]
572 Whitehead Road.
Trenton, NJ 08619
Tel [phone]
Fax [phone]

ILP 25/33 Owner’s Manual
Rev.1.4 3
Table of Contents
1Manual Updates........................................................................................................................5
2Safety Information....................................................................................................................6
2.1 General Safety..............................................................................................................7
3Important Information ..............................................................................................................8
3.1 Improper Useage..........................................................................................................9
4General View of Liftgate...........................................................................................................10
4.1 ILP Liftgate Overview....................................................................................................10
5Maximum Load and Placing of Load on Platform ..................................................................11
6Operation of Liftgate ................................................................................................................12
6.1 Operation by Toggle Switch/Hand Held Remote Control...............................................12
6.2 Hand Held Remote Control (Optional)...........................................................................14
6.3 Wireless Hand Held Remote (Optional) ........................................................................14
6.4 Cart Stops Operation (Optional)....................................................................................15
7Preventive Maintenance and Quick Check.............................................................................17
7.1 Maintenance and Care..................................................................................................17
7.2 Lubrication....................................................................................................................18
7.3 Checking and Changing the Oil.....................................................................................19
7.3.1 Recommended Hydraulic Fluids Table............................................................20
7.4 Decal Placement and Inspection...................................................................................21
7.5 Quick Check List...........................................................................................................23
8Troubleshooting.......................................................................................................................23
8.1 Liftgate will not power on...............................................................................................24
8.2 Liftgate does not Lower Down.......................................................................................26
8.3 Liftgate does not Lift Up................................................................................................27
8.4 Electrical Wiring –Batteries –Truck/Trailer...................................................................28
8.5 Cross Test on Single Pole Plug Charge System ...........................................................29
8.6 Electrical Schematic (Gravity Down ) ............................................................................30
8.7 Electrical Schematic (Power Down ) .............................................................................31
8.8 Hydraulic Schematics (Gravity Down)...........................................................................32
8.9 Hydraulic Schematics (Power Down)............................................................................33
9Needed Information for Ordering Spare Parts and Repairs...................................................34
9.1 Ordering Spare Parts....................................................................................................34
9.2 Repairs.........................................................................................................................34

ILP 25/33 Owner’s Manual
Rev.1.4 4
10 Warranty....................................................................................................................................34
11 Contact Address.......................................................................................................................35
Company Information:
Company Name:
Advisor Name:
Vehicle Year Make & Model:
Liftgate Information:
Liftgate Serial Number:
Liftgate Model Number:
Date of Purchase:
Date of Installation:
Thank you for choosing Palfinger Liftgates.

ILP 25/33 Owner’s Manual
Rev.1.4 5
1 Manual Updates
Revision
Description
v1.1
Changed product name from PLP to ILP.
v1.2
Revised Sections 13.9, 13-10: Toggle switch wire colors updated.
v1.3
Updated Sections 8.6 & 8.7
v1.4
Updated pictorials throughout manual to match actual product.

ILP 25/33 Owner’s Manual
Rev.1.4 6
2 Safety Information
This manual follows the Guidelines set forth in ANSI X535.4-2007 for alerting you to possible hazards and
their potential severity.
! DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious
injury.
! WARNING indicates potentially hazardous situation which, if not avoided, could result in death or serious
injury.
! CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or
moderate injury.
CAUTION without the safety alert symbol is used to address practices not related to personal injury.
(In this manual we use it to alert you to potentially hazardous situation which, if not avoided, may result in
property damage.)
NOTICE without the safety alert symbol is used to address practices not related to personal injury. (In this
manual we use it to alert you to special instructions, steps, or procedures.)

ILP 25/33 Owner’s Manual
Rev.1.4 7
2.1 General Safety
REMEMBER!
It is the fleet manager’s responsibility to educate the operator on the liftgate and its intended use. The
operator’s attention should be drawn to the permitted load limits and an understanding of the operation to
ensure safety throughout the operation.
ONE-MAN OPERATION!
Never let an “outsider” operate the liftgate while you are handling the cargo. A “misunderstanding” can
result in serious personal injury or even death.
In the interest of safety it is important that all operating personnel properly understand the functions
of the liftgate, possible hazards, dangers, the load limits and load positioning for that specific unit.
IMPORTANT NOTICE!
Before the operator uses the liftgate, they should be thoroughly familiar with the lift’s functions and
usage according to the following:
1. Improper operation of this lift can result in serious personal injury. Do not operate unless you have
been properly instructed, have read and are familiar with the operation instructions. If you do not
have a copy of the instructions please obtain them from your employer, distributor or lessor, as
appropriate, before you attempt to operate the lift.
2. Be certain the vehicle is properly and securely stopped before using the lift.
3. Always maintain the liftgate and inspect it for damage before usage. If there are signs of improper
maintenance, damage to vital parts, or slippery platform surface, do not use the lift. Do not attempt
your own repairs unless you are specifically trained.
4. Do not overload. See the Rating Label on the unit for the rated load. Remember that this limit
applies to both raising and lowering operations.
5. Each load should be placed in a stable position as near as possible to the body of the truck/trailer.
6. Never stand in, move through or allow anyone else to stand in or move through the area in which the
lift operates, including that area in which a load might fall.
7. This is not a passenger lift. Do not ride the lift with unstable loads or in such a manner that a failure
would endanger you. The lift is not equipped with a back-up system to prevent falling cargo in the
event of a failure.

ILP 25/33 Owner’s Manual
Rev.1.4 8
Improper operation of this liftgate may result in severe personal injury or death. DO NOT operate unless
you have been properly instructed, have read and are familiar with the procedures in this manual. We have
designed this manual to illustrate the steps needed for the basic operation of this ILR+ liftgate. It also
provides safety information and simple preventive maintenance tips.
3 Important Information
Before Getting Started
“READ FIRST”
Before starting any operations of the liftgate, please read and understand this Owner’s Manual. The
intention of this manual is to provide the user a guide for the operation as well as preventive
maintenance. Do not attempt to modify or repair the liftgate unless performed by qualified
personnel. Please contact your nearest Palfinger Liftgates distributor or Palfinger Liftgates in
California or New Jersey for assistance if you have any questions regarding installation, operation
or maintenance at 888-774-5844.
This owner’s manual applies to the following models: ILP 25 / 33
Important notes
The electric supply is taken from the vehicle battery. If the vehicle battery is not sufficient, an auxiliary
battery kit needs to be installed. The electric control power is secured via a 15-Amp fuse and an on-off
switch located inside the cab.
Trailer applications have an on/off switch near the rear curb side corner post.
The liftgate is operated from a standard toggle switch. A hand held remote control is optional with up and
down functions. A variety of different control options can be purchased with the Palfinger Liftgates product.
The valves do not prevent overloading of the platform when lowering or tilting down.
This manual is not intended for use as a repair or troubleshooting guide. Repairs should be
performed by a Palfinger Liftgates Authorized Service Center.
This Manual has been designed for use in conjunction with the ILP series liftgates only which are designed
for different capacities. There are four options available to determine the model and serial number of the
installed liftgate:

ILP 25/33 Owner’s Manual
Rev.1.4 9
1) Refer to the serial number tag on the liftgate, the tag can be found on the street side liftarm, as shown in
Fig.1.
Serial
Number
Tag
Liftarm
(Driver Side)
2) Ask your employer or lessor;
3) Call your Palfinger Liftgates Authorized Service Center for assistance.
4) Call Palfinger Liftgates for assistance in the USA at 888-774-5844. You can also contact Palfinger
Liftgates by fax [phone] or on the internet- www.palfinger.com
For technical support, contact Palfinger Liftgates or an authorized Palfinger service center.
www.palfinger.com
3.1 Improper Useage
Some examples of improper use of the liftgate may include, but are not limited to:
Using the liftgate as an elevating work platform.
Using the liftgate to push, pull, or tow loads or other objects.
Using the liftgate to carry people (Only the operator may travel on the platform).
Using the liftgate to clear snow.
Trying to use the liftgate as a “launching pad”.
Using force of the hydraulic system to bend, shear, or break objects.
Driving a forklift over the liftgate.
Driving the truck or trailer with the platform open.
Plowing with the platform.
Fig.1

ILP 25/33 Owner’s Manual
Rev.1.4 10
4 General View of Liftgate
4.1 ILP Liftgate Overview
Load Center
of Gravity
DOTBumper Hitch Bumper
Center Bumper
Hydraulic
Power Unit
Liftarm
ParallelArm
Platform
Cart Stops
(Optional)
SingleAction or
DoubleAction
Lift Cylinders
Springs*
Hydraulic
Power
Unit Platform
Roll Off
Wheels
Bolt-On
Mount Plates
Mount
Frame
Bed Extension
*No spring installed on left side for 42“ and 48“ aluminum platforms only.

ILP 25/33 Owner’s Manual
Rev.1.4 11
5 Maximum Load and Placing of Load on Platform
Every Palfinger Liftgate is rated up to a maximum load. The point of maximum load is rated at a defined
distance. The center point of maximum load is at 24” from the rear of the bed extension out to the platform,
Fig.2.
24"
Vehicle
Load
By increasing this distance the maximum load of the liftgate is decreasing.
An overview about the rating depending, on the distance from the end of the platform is shown in the
following load diagram.
18 24 30 36 42 48 54 60 66 72 78 84 90
10
20
30
40
50
60
70
80
90
100
Distance FromBody (inches)
Capacity (%)
Fig.2

ILP 25/33 Owner’s Manual
Rev.1.4 12
6 Operation of Liftgate
6.1 Operation by Toggle Switch/Hand Held Remote Control
Always stand clear of platform area when operating the liftgate.
To Open Liftgate
1. Power on the liftgate by switching the ON/OFF switch ON. ON/OFF switch location for a truck is
located in the cab, Fig.3, for a trailer it will be located on the dock bumper strut, Fig.4.
Strut
ON/OFF Switch
Location for Trucks
Rocker Switch
Toggle Switch
ON/OFF Switch
Location for Trailers
2. Use the Down function of the toggle switch to lower the gate from the stored position, Fig.5, until the
platform rest on the wheel, Fig.6.
Down
Up
3. Identify the type of platform installed. Steel and aluminum platforms have different safety features.
Steel platforms have a safety chain that secure the tip to the main, Fig.7. Aluminum platforms have
a safety strap that secures the tip and main, Fig.8.
Steel Platform Aluminum Platform
Handle
(Main)
Handle
(Main)
Handle
(Main)
Safety
Chain
(Main) Safety
Strap
Handle
(Tip)
Fig.3
Fig.5
Fig.4
Fig.6
Fig.7
Fig.8

ILP 25/33 Owner’s Manual
Rev.1.4 13
4. Use the handle on the main to manually pull the platform away from the wheels down to the ground,
Fig.9. Unhook the safety chain/strap on the side of the platform that secures the main section to the
tip. Use the handle on the tip section to manually unfold the tip, Fig.10. For aluminum platform,
unhook the strap, and use the strap to unfold the platform tip manually.
Handle
(OnTip)
Handle
(On Main)
Chain
5. Center the load on the platform 24“ away from the rear of the bed extension, Fig.11. Use the toggle
switch to lift the platform up and down, Fig.12. To tilt the platform down, continue holding the toggle
switch down until the platform begins to tilt. Toggle up to tilt the platform up parallel the ground.
Down
Up
24"
Load
Load
To Store Liftgate
1. Raise platform approximately 16“from the ground, fold the tip manually using the handle/strap and
secure the tip to the main with the safety chain/strap, Fig.13. Manually lift the platform to rest
against the wheels, Fig.14.
Handle
(OnTip)
2. Use the UP function on the toggle switch to store the platform, Fig.15.
Down
Up
3. Turn the ON/OFF switch OFF when liftgate is not in use.
Fig.9
Fig.10
Fig.11
Fig.12
Fig.13
Fig.15
Fig.14

ILP 25/33 Owner’s Manual
Rev.1.4 14
6.2 Hand Held Remote Control (Optional)
Reminder: Do not store remote inside refrigerated vehicles. Control will be damaged.
1. Lowering Down
Press and hold the black button to lower platform.
2. Lifting Up
Press and hold the white button to raise platform.
3. Tilt Down (at Ground Level)
Press and hold the button until the platform starts tilting down.
Note: The tilt down function can also be achieve with the standard toggle switch by performing the
same procedure
4. Tilt Up (at Ground Level)
Press and hold the button until the platform starts tilting up.
Note: The tilt up function can also be achieve with the standard toggle switch by performing the
same procedure
Lift DOWN
Lift UP White Button
Black Button
Tilt Up (at ground level)
Tilt Down (at ground level)
6.3 Wireless Hand Held Remote (Optional)
1. Read the wireless remote owner’s manual before operating the liftgate.
2. Power the remote by using the ON/OFF switch on the rear of the control.
3. Each function has a separate button. Functions are displayed below.
4. After finishing using the gate, switch the power OFF on the remote.
5. Maintain the remote in the cab of the vehicle.
Down
Lower platform
Up
Raise platform

ILP 25/33 Owner’s Manual
Rev.1.4 15
6.4 Cart Stops Operation (Optional)
Aluminum Platform Cart Stops
1. Push the cart stop latch out toward the curb side, Fig.14. The cart stop will spring open automatically
once the latch has been moved from its original position, Fig.15.
2. To close the cart stops, push the cart stop latch inward towards the street side, Fig.16. After the latch is
in place close each cart stop by pushing each stop down.
Latch
Cart
Stops
(Closed Position)
Platform
Tip
Cart
Stops
(Open Position)
Platform
Tip
Latch
Latch
Push each cart stop
down to close
Platform
Tip
Cart Stop
(Open)
Cart Stop
(Closed)
Push Down
to Close
Fig.14
Fig.15
Fig.16
Note: One latch is used for both cart stops.

ILP 25/33 Owner’s Manual
Rev.1.4 16
Steel Platform Cart Stops
1. Each cart stop is equipped with a retaining latch. Push each latch inward to open the cart stop, Fig.17.
The cart stop will automatically spring open once the latch has been pushed, Fig.18.
2. To close the cart stop, push and hold each cart stop down in close position and lock each cart stop with
the retaining latch, Fig.19.
Cart
Stops
(Closed Position)
Platform
Tip
Push eachcart stop
down to close
Platform
Tip
Platform
Tip
Cart
Stops
(Open Position)
Push Down
to Close
Cart Stop
(Open)
Cart Stop
(Closed)
Retaining
Latch
Retaining
Latch
Retaining
Latch
Note: One latch on each cart stop.
Fig.17
Fig.18
Fig.19

ILP 25/33 Owner’s Manual
Rev.1.4 17
7 Preventive Maintenance and Quick Check
The ILP needs preventive maintenance to perform at its fullest capability. Lubricate and inspect regularly.
Also, check hoses, cables, controls, etc. and make sure these components are not damaged.
REPAIR OR REPLACE FAULTY PARTS IMMEDIATELY
7.1 Maintenance and Care
The following “inspection and maintenance”should be performed at the recommended intervals depending
on operation and amount of cycles or at the time when the unit shows any signs of damage or abuse. In
order to prolong the liftgates longevity it is important to maintain and perform preventive care as indicated
below.
* Recommended bases for
inspection and maintenance
Depending
on use
Daily
Monthly
Quarterly
Cleaning
x
General lubrication of pins and
bushings
x
Oil level inspection
x
Oil change
x
Check hydraulic hoses and pipes for
leaks
x
Check controls and connections
x
Check pins and pin retaining bolts
x
Check batteries and connections
x
Check warning labels and other safety
equipment for effectiveness and
visibility
x
Visual check for loose or missing parts
and un-usual noise during operation
x
Check lock bolts and pins for tightness
x
Check complete function of gate
x
Check mounting brackets of lift gate to
frame for cracks or damage visually
x
Maintenance Schedule

ILP 25/33 Owner’s Manual
Rev.1.4 18
7.2 Lubrication
Properly lubricated, the ILP series Palfinger Liftgates will ensure longevity. Lubricate the liftgate at the same
time as the truck/trailer. Grease more frequently if the liftgate is frequently used. The liftgate should be
greased every 500 cycles (depending on use –estimated every 3 month).
All bearing points must be lubricated in accordance with the maintenance intervals.
Reminder: Lubricate all points with the platform at ground level.
-PlatformHinges
-Cart Stops (If, installed)
4 zerks:
- 1 Cylinder
- 2 Lift arm
- 1 Parallel arm
4 zerks:
- 1 Cylinder
- 2 Liftarm
- 1 Parallel arm
4 zerks:
- 1 Cylinder
- 1 Parallel arm
- 2 Shackle
4 zerks:
- 1 Cylinder
- 1 Parallel arm
- 2 Shackle
Open enclosure to
check and refill oil.
Grease: Location of Grease Zerks (8 on each side, 16 total)
IN
OUT
Oil: Oil level in the power pack tank (see marking inside of power pack reservoir)
IN
Lubricate: Platform hinges, Slide Rails and optional Cart Stops.

ILP 25/33 Owner’s Manual
Rev.1.4 19
7.3 Checking and Changing the Oil
To check fluid:
1. To begin, lower gate to ground and tilt platform down.
2. Remove the cover from the Hydraulic Power Unit enclosure.
3. The level of the oil should be 1“ from the top of the oil reservoir when the platform is tilted down at
ground level. If fluid is required, use a recommended fluid from the 6.3.1 fluids table.
To change fluid:
1. Unscrew the Oil Drain Bolt and let the fluid drain out of the reservoir into an approved cointainer.
When reservoir is empty fill the reservoir up between 1“ from the top of the reservoir. Change oil at
least once a year, preferable in the fall before the weather gets cold.
2. Place the cover back on to the Hydraulic Power Unit enclosure.
Motor
Solenoid
Motor Studs
Oil Drain Bolt
Motor
Oil Filler Cap
Oil Reservoir
Hydraulic
Connections
ValveBlock
1" Oil Level
Hydraulic Power
Unit Enclosure

ILP 25/33 Owner’s Manual
Rev.1.4 20
7.3.1 Recommended Hydraulic Fluids Table
All ILP liftgates are equipped with Hydrex MV Arctic 15 hydraulic fluid from factory.
Hydraulic Fluid Installed From Factory
Property
HYDREX MV ARCTIC 15
Start Up Temperature
<50°C / -58°F
Operating Temperature
-45°C to +23°C / -49°F to 73°F
Pour Point
-57°C / -71°F
Flash Point
128°C / 262°F
Density 15°C (59 °F). kg/L
0.834
Viscosity:
cSt @ 40°C/SUV @ 100°F
cSt @ 100°C/SUV @ 210°F
cP @ -50°C (-58°F)
13.0 / 69.7
4.95 / 42.5
1,310
When changing or adding fluids, it is highly recommended to use Hydrex MV Arctic 15 fluid, however, the
alternatives fluid brands listed below can be used.
Alternative Fluids
Temperature Range
Fluid Brand
30° to 150° F
EXXON UNIVIS J26
MOBIL DTE 13M
CHEVRON AW MV32
ROSEMEAD MV 150 (32)
-50° to 150° F
MOBILE DTE 11
SHELL AERO FLUID 4/41
SHELL TELLUS 15
Extreme Cold Temperature
MIL H5606 (Military Spec.)