Installation: ATD-4P9DXL Four Post Lift 9,000 lbs. Capacity Owner Manual

Overview

The ATD-4P9DXL Four Post Lift 9,000 lbs. Capacity is a heavy-duty, four-post vehicle lift designed for indoor automotive service, long-term vehicle storage, inspections, and underbody access. Its drive-on runways, mechanical locking system, hydraulic power unit, wheel stops, ramps, drip trays, and included jack/tool tray support practical garage and workshop use.

The lift supports vehicles up to 9,000 pounds total, with a maximum recommended axle load of 4,500 pounds per axle. It is intended for trained operators who can install, inspect, level, operate, and maintain the equipment according to the supplied installation and owners manual.

Specifications

• Model: ATD-4P9DXL
• Lift capacity: 9,000 pounds total; 4,500 pounds per axle
• Maximum lifting height: 85 inches
• Overall length with ramps: 239 inches
• Overall length without ramps: 197 inches
• Overall width: 123 inches
• Overall width with power unit: 134.5 inches
• Drive-through width: 99 inches
• Runway tread width: 20 inches
• Runway length: 188.5 inches
• Runway height: 4.80 inches
• Approach ramp length: 37 inches
• Clearance between runways: 39.5 inches
• Clearance under runways: 81 inches
• Outside-to-outside runway dimension: 79 inches
• Column height: 97 inches
• Clearance between columns: 111.5 inches
• Locking positions: 11
• Lifting speed: approximately 90 seconds
• Power requirement: 110 volts, 15 amps, single phase
• Recommended hydraulic fluid: ISO 32 light hydraulic oil
• Shipping weight: 2,354 pounds
• Operating temperature: 41°F to 104°F, or 5°C to 40°C

Detailed Description

The ATD-4P9DXL uses two full-length runways supported by two crossbeams and four columns. The mainside runway contains the hydraulic cylinder and connects to the power unit through the supplied hydraulic hose. Hydraulic pressure raises the runways, while mechanical latches and lock ladders support the load at selected locking positions.

Each column contains a lock ladder, latch assembly, cable sheave, and cable adjustment hardware. Steel cables synchronize the four corners so the runways travel evenly. Nylon slack-cable wheels and secondary locking components help maintain latch engagement when the lift is operating.

Main components include the mainside runway, sub-runway, crossbeams, power-unit column, three sub-columns, hydraulic power unit, drive-on ramps, wheel stops, cover plates, drip trays, jack/tool tray, foot step, lock rods, release handle, and caster assemblies. Optional accessories identified in the manual include a rolling scissor jack, a crossbeam jack, and a poly caster kit.

Safety

• Read the complete installation, safety, operating, and maintenance instructions before using the lift, and keep the manual available near the equipment.
• Only trained and authorized personnel should operate the lift. Keep unauthorized people and passengers away from the lift bay.
• Never exceed the 9,000-pound total capacity or the 4,500-pound-per-axle limit. Consider vehicle weight distribution before lifting.
• Center the vehicle between the columns. Use a second person outside the vehicle to guide loading and unloading.
• Set the parking brake and chock the wheels before raising the vehicle.
• Inspect bolts, nuts, hose fittings, cables, latches, and surrounding clearance before every lift.
• Never place any person beneath the lift while it is moving. Keep hands, feet, loose clothing, hair, and tools away from pinch points.
• Always lower the lift onto its mechanical locks before working beneath the vehicle or storing another vehicle below it.
• Do not rock the vehicle on the runways. Use suitable jack stands when removing or installing heavy components.
• If the lift or vehicle appears unstable, clear the area immediately and do not attempt to steady the load manually.
• Wear safety glasses. Do not use the equipment with a damaged cord, after a damaging impact, or when a qualified inspection is required.
• Disconnect electrical power when the equipment is not in use. Do not pull the plug by its cord.
• Keep the power unit away from water, rain, wet surfaces, open fuel containers, and excessive moisture. The electrical components are not weatherproof.
• Provide adequate ventilation when working around operating internal-combustion engines.
• Stop using the lift immediately if unusual noise, cable damage, latch malfunction, hydraulic leakage, or another sign of failure appears.

Installation and Setup

Choose the Installation Site

Install the lift indoors on a solid, level, steel-reinforced concrete floor. The specified foundation is at least 4 inches thick and rated at 3,000 psi, with no more than 2 degrees of slope. Do not install on asphalt, wood, or another unstable surface.

Inspect the concrete for cracks, defects, seams, and other damage. Leave at least 3 feet of walking clearance from nearby walls. Check overhead clearance for heaters, structural supports, electrical lines, and other obstructions. The installation area also needs at least 9 feet of clearance from the end opposite the power-unit end and 6 feet at the power-unit end so the lock rods can be installed.

The power unit may be positioned at the front driver-side corner or the rear passenger-side corner. The lift is not intended for outdoor operation.

Required Tools and Materials

• Metric wrenches or sockets
• Adjustable wrench
• Locking pliers
• 25-foot tape measure
• Step ladder
• Phillips screwdriver
• Rotary hammer drill and 3/4-inch masonry bit when anchoring
• Three gallons of ISO 32 light hydraulic oil
• Heavy-duty lifting equipment or additional helpers for unloading and assembly

General Assembly Sequence

1. Inspect the shipment for damage before signing the freight receipt. Record visible damage and report freight damage promptly to the carrier.
2. Remove the plastic wrap, power unit, braided hydraulic hose, and hardware box from the top runway.
3. While the mainside runway is upside down, install the 90-degree hydraulic fitting through the runway side opening and secure it with its jam nut.
4. Remove shipping ties, extend the cable ends through the runway openings, and verify that the hydraulic fittings are tight.
5. Fully extend the cylinder piston rod using the cable lock plates, then safely flip the runway using suitable lifting equipment.
6. Position the mainside runway with its hydraulic fitting toward the selected power-unit corner.
7. Place the power-unit column in the selected corner and arrange the three sub-columns in the remaining corners.
8. Unpack the crossbeams, covers, ramps, drip trays, jack/tool tray, lock ladders, and caster components. Set aside the linkage-rod cover panels for later installation.
9. Orient the crossbeams with the latch linkage rods facing outward and the short linkage rod nearest the power-unit column.
10. Install the crossbeams into the column tops using a suitable hoist, or assemble the end structures horizontally and raise them as complete units.
11. Insert each lock ladder into the guide blocks inside the columns. Install the top caps with their cable mounting holes nearest the runways.
12. Position the crossbeams at the second-lowest locking position and secure the top caps, lock ladders, washers, nuts, and jam nuts.
13. Square the two end structures so the outside crossbeam rails measure 188.5 inches apart and the diagonal measurements are within 1/2 inch.
14. Place the mainside and sub-runways on the crossbeams. Secure them with the supplied bolts, lock washers, and flat washers.
15. Route each preinstalled cable around its cable sheaves without binding. Position the plastic cable pulley between the cable and lock ladder so the slack-cable safety feature can operate correctly.
16. Install the lock rods, linkage components, rod guides, and crossbeam brackets. Confirm that the T-bar linkage rod passes through the guide rings beneath the mainside runway.
17. Mount the power unit to the mainside column, install the power-unit hydraulic fitting, fill the reservoir, and connect the electrical supply.
18. Connect the braided hydraulic hose between the mainside runway fitting and the power-unit fitting.
19. Raise the assembled lift and set it on a low locking position. Check the crossbeams and runways with a level.
20. Use the lock ladder adjustment nuts at the tops of the columns to level the lift. Tighten the jam nuts below the top caps after adjustment.
21. Raise the lift off the locks so the cables support it. Adjust the nylon cable nuts at the top of each column until the lift is level during travel. Use locking pliers to prevent the cable from turning when necessary.
22. Install the crossbeam covers, drip board, runway cover plates, front wheel stops, rear drive-on ramps, and power-unit foot step.
23. Install the jack/tool tray and drip trays. Grease every cable sheave, bearing, and shaft before operating the lift.

Optional Caster Kit

Raise the lift 2 to 4 feet, assemble the four caster units, and position one beneath each crossbeam rail. Secure each assembly with its pivot pin and hairpin cotter pin. Lower the lift and verify that all four casters engage the crossbeams and lift the columns clear of the floor.

Never move the lift on its casters while a vehicle is loaded.

Floor Anchoring

The lift does not require floor bolting when installed according to the specified conditions, but the manual provides an anchoring procedure for installations that use anchors. Anchoring requires concrete with at least 3,000 psi compressive strength and at least 4-1/4 inches of thickness to provide the required embedment for the supplied 3/4-inch by 5-1/2-inch anchors.

• Keep anchors at least 6 inches from slab edges or seams.
• Maintain at least 6-1/2 inches between anchor holes.
• Drill with a perpendicular 3/4-inch carbide-tipped masonry bit to a depth 2 inches deeper than the anchor length.
• Clean dust from each hole before installing the anchor.
• Use horseshoe shims or full-size base shims to make columns plumb.
• Do not exceed 1/2 inch of shim thickness when using the supplied anchors.
• Allow new concrete to cure fully before anchoring; the manual identifies a typical 28-day cure for concrete.
• Tighten anchors to 130 foot-pounds with a torque wrench. Do not use an impact wrench.

If an anchor will not reach the specified torque, the concrete beneath that column may need to be replaced with a minimum 2-foot by 2-foot by 6-inch pad of at least 3,000 psi concrete. Allow the replacement concrete to cure before continuing.

Operation

Loading the Vehicle

1. Remove passengers and inspect the runways, columns, ramps, and surrounding area for obstacles.
2. Drive slowly onto the runways while another person guides the driver.
3. Center the vehicle between the columns and confirm that the center of gravity is distributed evenly.
4. Set the parking brake and place wheel chocks against the tires.
5. Confirm that neither axle exceeds 4,500 pounds and that the vehicle is not excessively front-heavy or rear-heavy.

Raising the Lift

1. Press the power-unit raise control until the runways clear the floor.
2. Stop and verify that the vehicle has not shifted and that the load remains properly distributed.
3. Continue raising to the desired height while remaining clear of the lift.
4. Release the lowering control to lower the runways onto the nearest mechanical lock position.
5. Before going underneath the vehicle, verify that all four latches are fully engaged and that the lift is resting on the locks.

Lowering the Lift

1. Remove tools and obstructions from beneath the lift and vehicle.
2. Confirm that only the operator remains in the lift area.
3. Raise the lift slightly off the locks.
4. Pull the safety latch release handle and operate the power-unit lowering control.
5. Watch all four corners throughout the descent. They should move downward at the same rate.
6. If one corner stops or moves more slowly, release the lowering control and return the lock lever to the lock position.
7. After the lift reaches the floor, have a guide assist with driving the vehicle off the runways.

An unloaded lift may descend slowly, and additional weight may be needed for normal lowering behavior. Never allow anyone beneath the lift while it is being raised or lowered.

Cleaning and Maintenance

Daily Inspection

Perform the following checks before operation, or at least every 8 operating hours:

• Listen for and visually confirm proper safety-lock operation.
• Verify free latch movement and full engagement with every lock ladder.
• Inspect hydraulic hoses and connections for leaks.
• Inspect cable connections, bends, fittings, and both raised and lowered cable sections for fraying or damage.
• Check snap rings at the rollers and cable sheaves.
• Inspect bolts, nuts, screws, wiring, switches, and floor areas near the columns.
• Confirm that cable sheaves and shafts remain lubricated.

Weekly Inspection

Every 40 operating hours, inspect the floor for stress cracks, check the hydraulic oil level, tighten hardware, and verify that the cable sheaves move freely without excessive shaft or sheave wear. When the lift is anchored, confirm that the 3/4-inch anchor bolts remain torqued to 130 foot-pounds without using an impact wrench.

Annual Service

• Grease cable sheave shafts at least once per year.
• Inspect cables for excessive wear and replace damaged cables.
• Change hydraulic fluid according to operating temperature, service conditions, contamination, filtration, and fluid chemistry.
• Use a shorter service interval in dusty environments.

Latch and Cable Adjustment

Inspect all four latches for free movement, missing parts, wear, and alignment with the lock-ladder slots. If the latches do not line up, the columns may need to be relocated or reshimmed.

For the initial cable adjustment, lower the lift completely, loosen each jam nut, and tighten the cable-stud nut until the yoke rises approximately 1/4 inch. Back the nut off one turn and retighten the jam nut.

For final synchronization, load a typical vehicle, raise the lift to full height, and lower it onto the top lock position. Check each corner and adjust the latch-bar or cable hardware so the locking latch has at least 2 inches of clearance below the lowest latch-bar slot. Raise the lift again and adjust the remaining cables so all four latches engage as nearly simultaneously as possible. Keep at least two threads visible between each adjustment nut and the end of its stud.

Troubleshooting

Motor Does Not Run

• Check for a blown breaker or fuse.
• Inspect wiring connections.
• Check the raise button for a fault.

Motor Runs but the Lift Does Not Rise

• Prime the power unit using the procedure below.
• Press the lowering handle and raise button together for 10 to 15 seconds to flush possible debris from the lowering valve.
• With hydraulic pressure relieved, inspect and clean the check-valve ball and seat.
• Check the hydraulic oil level with the lift fully lowered. Fill to the reservoir’s maximum mark as required.

Oil Comes from the Power-Unit Breather

• The reservoir may be overfilled. Relieve pressure and remove excess fluid.
• The lift may have been lowered too quickly under a heavy load. Use a slower lowering rate.

Motor Hums but Does Not Run

• Remove excess vehicle weight if the lift is overloaded.
• Have a qualified electrician inspect the wiring, capacitor, and supply voltage.

Lift Jerks During Travel

Jerking during upward or downward travel commonly indicates air in the hydraulic system. Raise the lift fully and return it to the floor four to six times, allowing the power unit to cool as needed.

Hydraulic Oil Leaks

• Power unit: Check the reservoir level if oil appears around the tank flange. The manual specifies a level approximately 2 inches below the tank flange.
• Cylinder or piston rod: A worn rod seal may require cylinder rebuilding or replacement.
• Cylinder vent: A failed piston seal may require cylinder rebuilding or replacement.

Excessive Noise or Vibration

• Check whether the crossbeam ends are rubbing against the columns and readjust as needed.
• If the cylinder is tight, place approximately half the rated capacity on the lift and cycle it several times to help break in the mechanism.
• Inspect cable sheaves and shafts for excessive wear and replace defective components.

Power-Unit Priming

1. Locate the check valve and its flush plug beside the lowering valve.
2. Place a shop towel over the area to catch escaping fluid.
3. Use an Allen wrench to loosen the check-valve plug approximately 2-1/2 turns.
4. Press the start or raise control for one second, then release it for three seconds.
5. Repeat the one-second-on and three-seconds-off cycle until the pump begins moving fluid.
6. Tighten the check-valve plug.

Hydraulic pressure must be relieved correctly before service. Electrical and hydraulic repairs should be performed by qualified personnel.

Warranty

The supplied warranty provides five years of structural coverage for listed structural components, including columns, uprights, swivel pins, legs, carriages, overhead beams, tracks, cross rails, and top rail beams.

A limited one-year warranty applies to the original purchaser for parts found defective in materials or workmanship during normal use. The warranty excludes normal-maintenance parts, wear items such as cables, slider blocks, chains, rubber pads, and pulleys, cylinders after the first 30 days, and on-site labor. Improper installation, alteration, misuse, or failure to operate and maintain the lift according to specifications can void coverage.

Freight damage must be documented on receipt rather than treated as a warranty defect. Missing parts must be reported within the period stated in the supplied warranty terms. Coverage is limited to the original purchaser and is not transferable.

Pros & Cons

Pros

• 9,000-pound capacity with a 4,500-pound-per-axle limit.
• Four-post design provides stable drive-on loading and vehicle storage.
• Eleven mechanical locking positions improve working-height flexibility.
• Includes ramps, wheel stops, drip trays, a jack/tool tray, and a foot step.
• Four-corner cable synchronization and adjustable lock ladders support level lifting.
• Optional caster equipment can help reposition an unloaded lift indoors.

Cons

• The large footprint requires substantial indoor floor and overhead clearance.
• Assembly requires heavy lifting equipment or several capable helpers.
• Concrete quality, leveling, anchoring, and cable adjustment require careful attention.
• Routine inspections, lubrication, hydraulic service, and latch checks are essential.
• The power unit is not weatherproof, so outdoor installation is unsuitable.

For garages and workshops that need a high-capacity drive-on storage and service platform, the ATD-4P9DXL Four Post Lift 9,000 lbs. Capacity combines a substantial working height with mechanical safety locks and practical included accessories. Safe performance depends on correct assembly, proper vehicle positioning, four-corner latch engagement, and consistent maintenance.