Dannmar D4-12 User manual

1645 Lemonwood Dr.
Santa Paula, CA 93060 USA
Telephone: [phone]
dannmar.com
Four-Post Lifts
Installation and Operation Manual
Manual P/N 5900246 — Manual Revision B — July 2021
⚠
DANGER
Read the entire contents of this manual before using this
product. Failure to follow the instructions and safety precautions in
this manual can result in serious injury or death. Make sure all other
operators also read this manual. Keep the manual near the product
for future reference. By proceeding with installation and
operation, you agree that you fully understand the contents
of this manual and assume full responsibility for product
use
.
Models:
•D4-12
•D4-12A
D4-12A Shown.

Manual. D4-12 Series Four-Post Lifts, Installation and Operation Manual, Manual P/N 5900246, Manual
Revision B, Released July 2021.
Copyright. Copyright © 2021 by BendPak Inc. All rights reserved. You may make copies of this document if you
agree that: you will give full attribution to BendPak Inc., you will not make changes to the content, you do not gain
any rights to this content, and you will not use the copies for commercial purposes.
Trademarks. Dannmar and the Dannmar logo are registered trademarks of BendPak Inc. All other company,
product, and service names are used for identification only. All trademarks and registered trademarks mentioned
in this manual are the property of their respective owners.
Limitations. Every effort has been made to make sure complete and accurate instructions are included in this
manual. However, product updates, revisions, and/or changes may have occurred since this manual was
published. BendPak reserves the right to change any information in this manual without incurring any obligation for
equipment previously or subsequently sold. BendPak is not responsible for typographical errors in this manual.
You can always find the latest version of the manual for your product on the Dannmar website.
Warranty. The Dannmar warranty is more than a commitment to you: it is also a commitment to the value of
your new product. Contact your nearest Dannmar dealer or visit www.dannmar.com/support/warranty/ for
full warranty details.
Safety.Your product was designed and manufactured with safety in mind. However, your safety also depends
on proper training and thoughtful operation. Do not install, operate, maintain, or repair the unit without reading and
understanding this manual and the labels on the unit;
do not use your Lift unless you can do so safely!
Owner Responsibility. In order to maintain your product properly and to ensure everyone’s safety, it is the
responsibility of the product owner to read and follow these instructions:
• Follow all installation, operation, and maintenance instructions.
• Make sure product installation conforms to all applicable local, state, and federal codes, rules, and regulations,
such as state and federal OSHA regulations and electrical codes.
• Read and follow all safety instructions; keep them readily available for operators.
• Make sure all operators are properly trained, know how to safely operate the unit, and are properly supervised.
• Do not operate the product until you are certain that all parts are in place and operating correctly.
• Carefully inspect the product on a regular basis and perform all maintenance as specified.
• Service and maintain the unit with approved replacement parts only.
• Keep instructions permanently with the product
and make sure all labels are clean and visible.
•
Only use the Lift if it can be used safely!
Unit Information. Enter the Model Number, Serial
Number, and the Date of Manufacture from the label
on your unit. This information is required for part or
warranty issues.
Model:
Serial:
Date of Manufacture:

D4-12 Series Four-Post Lifts 3P/N 5900246 — Rev. B — July 2021
Table of Contents
Introduction 3 Maintenance 60
Shipping Information 3 Troubleshooting 62
Safety Considerations 4 Wiring Diagrams 63
Components 5 Labels 64
Specifications 7 Parts Drawings 67
Installation Checklist 9
Installation 10
Operation 57
Introduction
This manual describes the following Dannmar Four-Post Lifts:
•D4-12. Four-Post Lift that raises Vehicles up to 12,000 lbs. (5,443 kg).
•D4-12A. The Alignment version of the D4-12.
This manual is
mandatory reading for all users of the D4-12 Series , including anyone who
installs, uses, maintains, repairs, or wants to know more about them.
Shipping Information
Your equipment was carefully checked before shipping. Nevertheless, you should thoroughly inspect
the shipment
before you sign to acknowledge that you received it.
When you sign a bill of lading, it tells the carrier that the items on the invoice were received in good
condition.
To protect yourself, do not sign until
after
you have inspected the shipment.
If any of
the items listed on the bill of lading are missing or are damaged, do not accept the shipment until the
carrier makes a notation on the bill of lading that lists the missing and/or damaged goods.
If you discover missing or damaged goods after you receive the shipment and have signed the bill of
lading, notify the carrier at once and request the carrier to make an inspection. If the carrier will not
make an inspection, prepare a signed statement to the effect that you have notified the carrier (on a
specific date) and that the carrier has failed to comply with your request.
It is difficult to collect for loss or damage after you have given the carrier a signed bill of lading. If this
happens to you, file a claim with the carrier promptly. Support your claim with copies of the bill of
lading, freight bill, invoice, and photographs, if available.
Our willingness to assist in helping
you process your claim does not make us responsible for collection of claims or
replacement of lost or damaged materials.

D4-12 Series Four-Post Lifts 4P/N 5900246 — Rev. B — July 2021
Safety Considerations
Read this entire manual carefully before installing or using the product .Do not
install or operate the product until you are familiar with all operating instructions and warnings. Do not
allow anyone else to operate it until they are familiar with all operating instructions and warnings.
⚠WARNING This product contains chemicals known to the State of California to cause cancer
and birth defects or other reproductive harm. For more information, visit
www.p65warnings.ca.gov.
General Safety Information
The following safety information applies to the D4-12 Series Four-Post Lifts:
•The product is a Four-Post Lift. Use it only for its intended purpose. Do not make any modifications
to the product.
•The product may only be operated by authorized, trained, properly supervised personnel.
•Do not use the product while tired or under the influence of drugs, alcohol, or medication.
•While the Lift is being use, only the Operator may be within 30 feet of the unit.
•
Never exceed the rated capacity of the Lift.
•When the Lift is in use, keep all body parts well away from it.
•Make sure all operators read and understand this Installation and Operation Manual. Keep the
manual near the Lift at all times.
•Make an inspection of the Lift
before using it. Check for damaged, worn, or missing parts. Do not
use it if you find any of these issues.
•Make a
thorough inspection of the product at least once a year. Replace any damaged or
severely worn parts, decals, or warning labels.
Symbols
Following are the symbols used in this manual:
⚠DANGER Calls attention to an immediate hazard that will result in death or severe injury.
⚠WARNING Calls attention to a hazard or unsafe practice that could result in death or severe
personal injury.
⚠CAUTION Calls attention to a hazard or unsafe practice that could result in minor personal
injury, product damage, or property damage.
NOTICE Calls attention to a situation that, if not avoided, could result in product or property
damage.
Tip Calls attention to information that can help you use your product better.

D4-12 Series Four-Post Lifts 5P/N 5900246 — Rev. B — July 2021
Liability Information
BendPak Inc. assumes no liability for damages resulting from:
• Use of the equipment for purposes other than those described in this manual.
• Modifications to the equipment without prior, written permission from BendPak.
•Injury or death caused by modifying, disabling, overriding, or removing safety features.
• Damage to the equipment from external influences.
• Incorrect operation of the equipment.
Components
The main components of your Lift include:
D4-12A model shown. Drawing shows the two possible Power Post locations; only one Post has the
Brackets for mounting the Power Unit. Not all components are shown.

D4-12 Series Four-Post Lifts 6P/N 5900246 — Rev. B — July 2021
The main components of your Lift include:
•Power Post. The Post that holds the Power Unit.
The Power Post can be in either of two
locations
. You can tell the Power Post from the other Posts because it has two Mounting
Brackets on it. Mount the Power Unit on one of the two Mounting Brackets.
•The other three Posts. These Posts are interchangeable.
•Power Unit. An electric/hydraulic unit that connects to an electric power source and then
provides Hydraulic Fluid to the Hydraulic Cylinder that raises and lowers the Runways.
•Powerside Runway. On the same side as the Power Post. The Powerside Runway has the
Hydraulic Cylinder and the Lifting Cables under them. The Powerside Runway
must go next to the
Power Post.
•Offside Runway. The other Runway. It does not have a Hydraulic Cylinder or Lifting Cables
under.
•Flex Tube. Not shown. A flexible, black tube that attaches to an opening on the Powerside
Runway on one end and to the bottom of the Flex Tube Bracket Plate (near the Power Unit) on the
other end. Used for routing the Air Line, Return Line, and Hydraulic Hose to the Power Unit.
•Utility Rails. Hold the optional Rolling Jacks. Utility Rails
must go on the inside of the Lift.
•Crosstubes. Go at each end of the Lift. The Crosstubes are hollow; the Lifting Cables that raise
and lower the Runways are routed through the Crosstubes.
•Drive-up Ramps. One for each Runway. Use them to drive onto and off of the Runways.
•Tire Stops. Located at the Front of the Lift, Tire Stops prevent the Vehicle’s Front Tires from
going any further forward. Additionally, we strongly recommend chocking the Vehicle’s Rear Tires.
•Safety Locks. Once engaged, they hold the Runways in position, even if the power goes out or
there is a leak in the Hydraulic Hoses.
Only leave the Runways on the ground or
engaged on a Safety Lock.
•Pushbutton Air Valve. Includes a Pushbutton that moves the Safety Locks away from the
Ladder so that they do not engage as you lower the Runways. Used only to lower the Runways.
Usually located next to the Power Post.
•Ladders. Part of the Safety Lock System installed at the back of each Post, somewhat resembles
a Ladder.

D4-12 Series Four-Post Lifts 7P/N 5900246 — Rev. B — July 2021
Specifications

D4-12 Series Four-Post Lifts 8P/N 5900246 — Rev. B — July 2021
Model D4-12 D4-12A
Lifting Capacity 12,000 lbs / 5,443 kg
Max capacity at Front Axle 6,000 lbs / 2,721 kg
Max capacity at Rear Axle 6,000 lbs / 2,721 kg
aFully lowered height 7.4" / 190 mm 9.4" / 240 mm
bMaximum rise 70" ( 5.8 feet) / 1,778 mm
Top Lock at 68.75" (5.7 feet) / 1,743 mm
cMaximum lifting height 77.5" (6.5 feet) / 1,968 mm 79.25" (6.7 feet) / 2,019 mm
dOverall width1 126" (10.5 feet) / 3,200 mm
eOutside length 205" (17.1 feet) / 5,207 mm
fOverall length 233.5" (19.5 feet) / 5,929 mm
gHeight of post 92" (7.8 feet) / 2,338 mm
hDistance between posts 116" (9.8 feet) / 2,942 mm
iDrive-thru clearance 98" (8.2 feet) / 2,482 mm
jRunway width 20" / 508 mm
kRunway length 194.75" (16.2 feet) / 4,946 mm
lWidth between runways 34.5" (876 mm) – 41.5" (1,054 mm)
mRunway centerline 54.5" (1,384 mm) or 61.5" (1,562 mm)
nOutside edge of runways 74.5" (1,892 mm) or 81.5" (2,070 mm)
Min. 4-Wheel Alignment N/A 106" (9 feet) / 2,692 mm
Max. 4-Wheel Alignment N/A 158.5" (13.3 feet) / 4,026 mm
Max. 2-Wheel Alignment N/A 163.5" (13.8 feet) / 4,153 mm
Min. wheelbase @ rated capacity2140" (11.8 feet) / 3,556 mm
Min. wheelbase @ 75 capacity2120" (10 feet) / 3,048 mm
Min. wheelbase @ 50 capacity2100" (8.4 feet) / 2,540 mm
Min. wheelbase @ 25 capacity280" (6.8 feet) / 2,032 mm
Safety Lock positions 15, spaced every 4" / 102 mm
Lifting time 60 seconds
Motor 220 VAC, 60 Hz, 1 Ph (special voltages available upon request)
1 Overall Width is defined as the dimension outside to outside of the Baseplates. Use the Overall Width listed
here for creating Chalk Lines.
2 The Lift supports less weight than its rated capacity if the Vehicle’s wheelbase is shorter; this is because the
wheels are closer to the middle of the Runways, where there is less strength. For example, the maximum
weight allowed on the Lift for a Vehicle with a wheelbase of 100" is 50 percent of the Lift’s rated capacity (or
6,000 lbs. when the rated capacity is 12,000 lbs.).
Specifications subject to change without notice .

D4-12 Series Four-Post Lifts 9P/N 5900246 — Rev. B — July 2021
Installation Checklist
Following are the steps needed to install your Lift. Perform them in the order shown.
☐1. Review the safety rules.
☐2. Make sure you have the necessary tools.
☐3. Plan for Electrical work.
☐4. Select the installation location.
☐5. Check the Clearances.
☐6. Decide the Lift Orientation.
☐7. Unload and unpack the Lift components.
☐8. Create Chalk Line Guides.
☐9. Move the Posts into position.
☐10. Install the Crosstubes.
☐11. Read about Safety Locks.
☐12. Install the Ladders and Top Caps.
☐13. Raise the Crosstubes.
☐14. Secure the Ladders.
☐15. Removing the Sheaves.
☐16. Install the Runways.
☐17. Read about Reinstalling Cable Sheaves.
☐18. Route the Lifting Cables.
☐19. Working with Compression Fittings and Tubing.
☐20. Install the Air Line.
☐21. Install the Return Line.
☐22. Read about Hydraulic Contamination.
☐23. Read about Thread Sealants.
☐24. Install the Hydraulic Hose.
☐25. Install the Power Unit.
☐26. Install the Flex Tube Bracket Plate and Angle Plate.
☐27. Install the Flex Tube.
☐28. Install the Pushbutton Air Valve and connect the Air Lines.
☐29. Connect the Return Line.
☐30. Connect the Hydraulic Hose.
☐31. Connect to a power source (
Electrician required ).
☐32. Install the Power Disconnect Switch and Thermal Disconnect Switch (
Electrician required ).
☐33. About Effective Embedment.
☐34. Anchor the Posts.
☐35. Perform final leveling.
☐36. Install the Accessories.
☐37. Lubricate the Lift.
☐38. Test the Lift.
☐39. Review the final checklist.

D4-12 Series Four-Post Lifts 10 P/N 5900246 — Rev. B — July 2021
Installation
The installation process takes multiple steps. Perform them in the order listed.
Read the entire Installation section before beginning the install ; this gives you a better
understanding of the process as a whole.
⚠WARNING Only use the factory-supplied parts that came with your Lift . If you use
parts from a different source, you void your warranty and compromise the safety of
everyone who installs or uses the Lift. If you are missing parts, visit
dannmar.com/support or call [phone].
Being Safe
While installing this equipment, your safety depends on proper training and thoughtful operation.
⚠WARNING Do not install this equipment unless you have automotive Lift installation training.
Always use proper lifting tools, such as a Forklift or Shop Crane, to move heavy
components. Do not install this equipment without reading and understanding this
manual and the safety labels on the unit.
Only fully trained personnel should be involved in installing this equipment. Pay attention at all times.
Use appropriate tools and lifting equipment. Stay clear of moving parts.
BendPak recommends referring to the current version of the ANSI/ALI ALIS Standard Safety
Requirements for Installation and Service for more information about safely installing, using, and
servicing your Lift.
⚠WARNING You must wear OSHA-approved (publication 3151) personal protective equipment
at all times when installing, using, maintaining, or repairing the Lift: leather gloves,
steel-toed work boots, eye protection, back belts, and hearing protection are
mandatory .
Using Tools
You may need some or all of the following tools:
•Rotary hammer drill or similar
•¾ inch carbide bit (conforming to ANSI B212.15)
•Hammer, crow bar, and two sawhorses
•Four-foot level and 12-foot ladder
•Open-end wrench set, SAE and metric
•Socket and ratchet set, SAE and metric
•Hex key wrench set
•Medium crescent wrench, torque wrench, pipe wrench
•Chalk line
•Medium-sized flat screwdriver and needle-nose pliers
•Tape measure (25 feet or above)
•Forklift, Shop Crane, or heavy-duty rolling dolly

D4-12 Series Four-Post Lifts 11 P/N 5900246 — Rev. B — July 2021
Planning for Electrical Work
You will need to have a licensed, certified Electrician available at some point in the installation.
⚠DANGER All wiring must be performed by a licensed, certified Electrician.
Notify your Electrician in advance so that they come prepared with an appropriate Power Cord with a
Plug for connecting to the power source, a Power Disconnect Switch, and a Thermal Disconnect
Switch. Refer to Contacting the Electrician for more information.
Your Electrician needs to:
•Connect the Power Unit to an electric power source. An electric power source is
required. The Power Unit comes with a pigtail for wiring to a power source. Have your Electrician
remove the pigtail and wire from inside the Electrical Box on the Power Unit to a Power Cord and
Plug or have them wire it directly into the electrical system at the Lift location.
Note: Installing the Power Unit and connecting the Power Unit to the power source are
separate procedures and are completed at different times in the installation process. You
do not need an Electrician to install the Power Unit, but an Electrician is
required to
connect the Power Unit to the power source.
•Install a Power Disconnect Switch. Ensures you can quickly and completely interrupt
electrical power to the Lift in the event of an electrical circuit fault, emergency situation, or when
equipment is undergoing service or maintenance. Put it within sight and reach of the Lift operator.
•Install a Thermal Disconnect Switch. Ensures the equipment shuts down in the event of an
overload or an overheated motor.
Note: None of these components are included with the Lift.

D4-12 Series Four-Post Lifts 12 P/N 5900246 — Rev. B — July 2021
Selecting a Location
When selecting the location for your Lift, consider:
•Architectural plans. Consult the architectural plans for your desired installation location. Make
sure there are no issues between what you want to do and what the plans show.
•Available space. Make sure there is enough space for the Lift: front, back, sides, and above.
•Overhead Clearance. Check for overhead obstructions such as building supports, heaters,
electrical lines, low ceilings, hanging lights, and so on. Use the maximum lifting height of your Lift
plus the height of the tallest Vehicle you plan on raising to determine how much height you will
need at the Lift location.
•Power. You need an appropriate power source for the Power Unit.
•Outdoor installations. Your Lift is approved for
indoor installation and use only .
•Floor. Only install the Lift on a flat, concrete floor; do not install on asphalt or any other surface.
The surface must be level; do not install if the surface has more than three degrees of slope.
⚠WARNING Installing your Lift on a surface with more than three degrees of slope could lead to
injury or even death; only install the Lift on a level floor. If your floor is not level,
consider making the floor level or using a different location.
•Shimming. If your concrete floor is not completely level, you can use Shims under the bases of
the Posts, as needed, to level the Lift. To estimate your Shim requirements, use a transit level and
targets to check for flatness. Use the provided Shims as necessary.
NOTICE Do not shim a Post more than half an inch using the provided Shims and Anchor
Bolts. A maximum shim of 2 inches is possible by ordering optional Shim Plates.
Contact Dannmar at 1 [phone].
•Concrete specifications. Do not install the Lift within 6 inches of cracked or defective
concrete. Make sure the concrete is at least 4.25 inches thick, 3,000 PSI, and cured for a
minimum of 28 days.
⚠CAUTION BendPak lifts are supplied with installation instructions and Concrete anchors that
meet the criteria set by the current version of the American National Standard
“Automotive Lifts – Safety Requirements for Construction, Testing, and Validation”,
ANSI/ALI ALCTV. You are responsible for any special regional structural and/or
seismic anchoring requirements specified by any other agencies and/or codes such
as the Uniform Building Code (UBC) and/or International Building Code (IBC).
Be sure to check your floor for the possibility of it being a
post-tension slab . In this case, you
must contact the building architect
before drilling. Using ground penetrating radar may help you
find the tensioned steel.
⚠WARNING Cutting through a tensioned Cable can result in injury or death. Do not drill into a
post-tension slab unless the building architect confirms you are not going to hit
tensioned steel or you have located it using ground penetrating radar.
If colored
sheath comes up during drilling, stop drilling immediately
.

D4-12 Series Four-Post Lifts 13 P/N 5900246 — Rev. B — July 2021
Checking Clearances
Out of a concern for safety, a certain amount of clear space around the Lift is required .

D4-12 Series Four-Post Lifts 14 P/N 5900246 — Rev. B — July 2021
Usable Area
The strength of the Runways is reduced in the middle, so you must not put the Wheels of a Vehicle
you are raising in this area. The same restriction applies to Rolling Jacks and Bottle-Jack Trays; they
must
not be used in this middle section of the Runways.
⚠CAUTION Do not load Vehicles so the Wheels of the Vehicle are in the middle of the Runways
or use Rolling Jacks or Bottle-Jack Trays in that area; it could permanently damage
the Runways. Damage caused by this unsupported use of the Lift is not covered
by the Warranty.
This will not impact your use of the Lift in the vast majority of cases, as the length of the wheelbases of
the Vehicles you are raising put the Wheels in the Usable Areas.
Top view. Drawing not necessarily to scale. Not all components shown.
For more information about the Dannmar Rolling Jacks, visit the Rolling Jacks website page.

D4-12 Series Four-Post Lifts 15 P/N 5900246 — Rev. B — July 2021
Deciding the Lift Orientation
Before going any further, decide how you want to orient your Lift. This decision affects where you will
place your Power Post and also the positioning of the Runways, which are
not interchangeable.
The Powerside Runway
must be installed next to the Power Post.
You can choose to position your Power Post at either the Front Driver-Side or the Rear
Passenger-Side. The Drive-up Ramps are not affected by the Power Post location.
The drawings in this manual show the Power Post at the Rear Passenger-Side.
Important:Installers, you need to have the Lift owner make this decision no later than when
moving the Posts into position.
Power Post Location:
Front Driver-side
Power Post Location:
Rear Passenger-side

D4-12 Series Four-Post Lifts 16 P/N 5900246 — Rev. B — July 2021
Creating Chalk Line Guides
Create the Chalk Line Guides so that the outside edges of all four Posts fit into the four corners
created by the Chalk Line Guides.
See Specifications to determine the Overall Width and Outside Length values for your Lift.
Note: Do
not use the Overall Length value; this includes the Ramps, which are not taken into
consideration for creating Chalk Line Guides.
Top View. Not drawn to scale. Not all components shown.

D4-12 Series Four-Post Lifts 17 P/N 5900246 — Rev. B — July 2021
To create Chalk Line Guides:
1. Create the Front Chalk Line where you want the Front of the Lift.
Make the Front Chalk Line longer than the Overall Width setting.
2. Create the two Side Chalk Lines at 90° angles to the Front Chalk Line and parallel to each other.
Make the Side Chalk Lines longer than the Outside Length setting.
The Side Chalk Lines
must be parallel to each other.
3. Create the Rear Chalk Line parallel to the Front Chalk Line.
Make the Rear Chalk Line longer than the Overall Width setting.
The Front and Rear Chalk Lines
must also be parallel to each other.
4. Before moving the Posts into position, measure
diagonally to make sure the two diagonal
measurements are the same.
Do not forget to check the diagonals.
5. When you move the Posts into position, put the corners of the Base Plates inside the corners
created by the four Chalk Lines.
Unloading and Unpacking
Once the components are unloaded, they are your responsibility to move around. As the Lift includes a
number of heavy pieces, the closer you unload them to the installation location, the better off you are.
⚠CAUTION Some Lift components are very heavy; if handled incorrectly, they can damage
materials like tile, sandstone, and brick. Try to handle the Lift components twice:
once when delivered and once when moved into position. You must have a Forklift
or Shop Crane to move them into position. Use care when moving them.
⚠WARNING The Posts and Runways are delivered with stabilizing structures on each end. Be
very careful when removing these stabilizing structures; the Posts and Runways
can shift or even fall. If they fall on a person, they could cause serious injury.
Moving the Posts into Position
Use a Forklift or Shop Crane to move the Posts, one at a time, to the inside corners of the Chalk Line
Guides.
Important: Position the Power Post at your chosen location. Remember, the Power Post can only
go in two possible locations: the
Front Driver-Side or the Rear Passenger-Side .
Do not stand up the Posts yet ; some of the following procedures are easier to complete if the
Posts are laying on the ground.

D4-12 Series Four-Post Lifts 18 P/N 5900246 — Rev. B — July 2021
Installing the Crosstubes
Your Lift has two Crosstubes:
•Crosstube with Large Windows: Goes on the end of the Lift opposite of the Power Post, with
the Windows facing the inside.
•Crosstube with Small Windows: Goes next to the Power Post, with the Windows facing the
inside.
Important: It is possible to install the Crosstubes
incorrectly in several different ways. Take your
time now and get it right the first time.
The following drawing shows the two Crosstube setups based on the Power Post location.
To install the Crosstubes:
1. Orient the Crosstubes in their required locations.
2. Put the black Slide Blocks into place on the outside ends of each Gusset (4 Blocks per Gusset).
Align the holes in the Slide Blocks with the rods on the side of the Gusset, then press the Slide
Blocks in. Make sure the Slide Blocks are oriented so that they create a Slot when pushed in.
Top View. Drawing shows how to
correctly install two Slide Blocks onto the
Crosstube Gusset.
Not all components are shown.

D4-12 Series Four-Post Lifts 19 P/N 5900246 — Rev. B — July 2021
The four Slide Blocks on a Gusset create two Slots. There is one Slot at the top of the Gusset and
a second Slot at the bottom; the Ladder
must go through both Slots on the Gusset.
⚠WARNING If the Slide Blocks are not correctly installed, then the Slots for the Ladder are not
created. In such a case, the Safety Locks will not work correctly, which endangers
everyone who uses the Lift.
Front view. Drawing shows the Top and
Bottom Slots created by the Slide
Blocks.
Not all components are shown.
3. Put the Crosstubes into place by doing either of the following:
oLean over the two Posts at one end of the Lift (some people put them on sawhorses, some
people lay them on the ground), slide the Crosstubes into place, then carefully stand up the
Posts; make sure to put them back in their correct locations inside the Chalk Line guides.
oCarefully stand up the Posts, use a Forklift or Shop Crane to raise the Crosstube above the
top of the two Posts that it goes between, and then slide the Crosstube down to the bottom.
⚠WARNING Use care when installing the Crosstubes, as the Posts are not anchored in place at
this point. Dropping or knocking over the Posts may cause permanent damage
equipment damage or serious personal injury. The Crosstubes and Posts are
heavy; do not lift without assistance.
4. Perform Steps 2 and 3 for the other Crosstube.

D4-12 Series Four-Post Lifts 20 P/N 5900246 — Rev. B — July 2021
Installing the Ladders and Top Cap
Each Post has a Ladder; each Ladder gets installed on the inside back of a Post. Ladders are secured
at the top and the bottom.
Make sure to install each Ladder through
both slots on each Crosstube Gusset.
Note: It is much easier to secure the bottom of the Ladders once the Crosstubes have been
raised, so that portion of installing the Ladders is described in Securing the Ladders.
⚠WARNING Make sure to install the Ladders correctly. If they are not installed correctly, the
Safety Locks on your Lift may not hold the weight of a Vehicle, putting anyone
under the Lift in danger.
Drawing shows how to route
the Ladders through both
Slots created by the Slide
Blocks.
Not all components shown.
Post not shown for clarity.
To install the Ladders and the Top Caps:
1. Take a Ladder and slide it down the back of the Post, with the Bolt Hole end at the bottom.
Make sure the Ladder goes through both Slots on each Gusset .
⚠WARNING It is easy to see the top Slot created by the Slide Blocks. It is difficult to see the
bottom Slot, but it is
required that the Ladder goes through both Slots.
2. Install the remaining Ladders the same way.