How to Commission a Bendpak Quickjack BL-3500 by VolCrew (2024)

Disclaimer: Read and follow the manufacturer’s safety precautions and instructions. Don’t blame me if you hurt yourself.

Stuff You’ll Need:

  • [li]Paper towels or shop cloths[/li]
    [li]Teflon tape[/li]
    [li]2-3 qts of Dexron transmission fluid[/li]
    [li]Funnel with stem diameter 0.5” or less[/li]
    [li]10 mm wrench[/li]
    [li]14 mm wrench[/li]
    [li]17 mm flange wrench[/li]
    [li]18 mm wrench[/li]
    [li]11/16” open end wrench[/li]
    [li]¾” open end wrench[/li]
    [li]#1 Phillips head screwdriver[/li]
    [li]#3 Phillips head screwdriver[/li]
    [li]6mm Allen wrench[/li]
    [li]Air compressor[/li]
    [li]Schrader valve tool[/li]

I ordered the Quickjack from Flyin’ Miata. Flyin’ Miata customer service was, as usual, exemplary.

Two weeks later Fedex dropped off two boxes that had been shipped directly from Bendpak with “free” shipping. The big one weighed about 130 lbs and contained the two lift assemblies and the handles. The Fedex guy brought these up with a two-wheel dolly to the front door.

The other box, about 45 lbs, contained the pump, the carrier, a set of 3810mm (12.5 ft) hoses, a set of 603 mm (2 ft) hoses, two sets of blocks and a box of hardware consisting of some fittings and fasteners. There was also a set of obsolete and very incomplete instructions.

I was pleasantly surprised to see the big box was shrink wrapped. The wheels were sticking out, though.

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In the little box, the contents were just tossed in the box and were rattling around. There was one piece of Styrofoam that seemed ineffective. My motor was scraped up a bit.

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There have been several revisions by the manufacturer and mine was different from the early adoptions. Some of the changes I noted were:

  • [li]The original control pendant cord was 20 ft long; mine is 10 ft[/li]
    [li]Fluid reservoir changed from plastic to metal[/li]
    [li]The quick-disconnect fittings have been changed[/li]
    [li]Carrier changed from two-sided to one sided[/li]
    [li]Paint on the air cylinders was changed from silver to black.[/li]

The next picture from the Bendpak instructions shows the earlier version of the system.

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The electric motor, pump and reservoir are shipped as one piece that has to be mounted to the carrier. I had read that some units did not fit on the carrier properly; this was the case with mine. The carrier handle interferes with the motor termination box. Here it is right out of the box.

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The situation was easily remedied. I took the #1 Phillips and opened the termination box. Inside, there are four Phillips screws that hold it to the motor. These are on a square layout allowing the box to be rotated ninety degrees clockwise. Here’s the box rotated:

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With included Phillips screws and the #3 screwdriver, the pump mounting adapter plate is fixed to the pump block. Then the whole assembly is bolted to the carrier and tightened up with the 14 mm wrench from the bottom side. Now it looks like this:

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I actually slipped in a washer between that 14 mm and the carrier bottom. This made the 14s the lowest point, causing the carrier to high-center and rock on the floor. So off came with the foot pads to get their own washers. The 10 mm wrench was used for this mod.

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With the pump and carrier assembled, I turned to the lifts that were still shrink wrapped:

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After removing the wrapping, I noticed the safety locks were attached to the frames rather loosely. I took the 18 mm and tightened both sides so the locks had enough tension to stay in the up position. The reason for this simply so you don’t have to fight them when you are trying to lower the lifts; they will drop into the mid-way detects on the way down. This is the only change I made on the lift frames.

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Bendpak ships the cylinders with oil to prevent them from corroding. This oil is supposed to be drained out. I removed the Schrader valves from the air cylinders:

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One cylinder just had a little that I caught on a paper towel, but the other one required a bowl.
The other place that needs to be drained is the hydraulic cylinder. Remove the red plug with the 6 mm Allen wrench. I didn’t get much oil out of these. These plugs don’t have to be reinserted.

Finally, turning to the connections, everything is going to be separated with the 11/16” and 17 mm flange nut wrench (I used my biggest Japanese Deem for the first time) and Teflon taped – except the pump block fitting that have o-rings (the top half of the fitting below):

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And the beveled-seat ninety degree fittings that screw into the cylinders:
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Note that the latter fittings are angle up slightly to prevent the hose from hitting the frame as the angle changes during lifting. I was careful to not point them up too much to prevent them from getting scraped on top.

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Once everything is taped up, the hoses can be installed:

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After connecting everything, I added the Dexron I had in the supply cabinet:

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The electrical requirements of the 110 V system are minimal. The motor is about 0.3 hp and draws 5.1 amps; it can easily run on a standard household 15 amp circuit.

Operation is simple. Open the reservoir vent. If the reservoir cannot pull in air when it is being emptied, the tank could collapse due to the vacuum formed. I have seen large industrial storage tanks collapsed and it is always amazing to review the circ*mstances and how little pressure differential is required.

Position the lift under the body and press the UP button. The pump runs to pressurize the cylinders. To lower, push the DN button. The pump does not run; the valve is opened in the pump block to allow fluid to flow out of the cylinders and back to the pump. This is called “single-acting” because the pump only runs in one direction.

Only when I pressed the DN button, the frames would not go down. The next day I called Bendpak support and, after being connected immediately to a rep, was told to pressurize the air cylinders to 90 psig while they were still in the up position. (The cylinders are marked with a warning to not exceed 50 psig if pressurized in the lowered position.) Once I did, the lift went down as commanded. After cycling it several times, I re-bled all four cylinders.

The original lift time was advertised as 4.5 sec. My instructions stated 10 sec. The label on the big box I received showed 15 sec. My experience was about 55 sec, much more in line with the FM’s statement of “about 60 sec.” Lowering was slightly faster, averaging 45 sec.

How to Commission a Bendpak Quickjack BL-3500 by VolCrew (2024)


What is the air pressure for QuickJack? ›

No air required. There is a secondary "air spring" cylinder that helps QuickJack lower smoothly to the ground when there is no weight on the frames. This cylinder needs to be filled to 40-50 psi during setup and rarely needs to be refilled.

Are QuickJack lifts safe? ›

QuickJack is much safer to operate than conventional floor jacks and stands. Once you get used to lifting your vehicle with the touch of a button, and you watch as both frames automatically lock in place, you'll never want to return to a pre-QuickJack lifestyle.

Where is the serial number on a QuickJack? ›

The Power-unit Serial Number can be found on rear side of the hydraulic manifold.

How much air pressure should be? ›

Most passenger cars' psi requirement will be between 30 to 35 psi, but several vehicles fall outside of that range and every vehicle will have specific requirements. Good tire air pressure ensures that tires wear evenly, provide a smooth ride, and increase fuel efficiency.

Does QuickJack need an air compressor? ›

Does QuickJack operate with an air compressor? An air compressor is not necessary to operate QuickJack. The portable power unit is electric over hydraulic and contains a built-in flow divider that ensures equal fluid pressure is given to both cylinders. No air required.

How stable are quick jacks? ›

The QuickJack system, when set up and used properly, is very stable. You need to carefully line up the QuickJack Frames, SUV and Light Truck Adapters, and the Lift Blocks with relatively flat spots on the frame before starting the lift.

Where is QuickJack made? ›

After 100 years of floor jacks and jack stands, getting cars off the ground shouldn't be such a chore. When Jeff returned to the BendPak offices in Santa Paula, CA, he presented his ideas to BendPak's drafters, engineers and testing crews.

Can you use just one QuickJack? ›

No. QuickJack is designed to lift an entire vehicle by engaging the OEM recommended lifting points. Any attempt to alter this configuration could be dangerous and will void your warranty.

How much ATF fluid for QuickJack? ›

Fill the reservoir with approximately 2.5 quarts/2.3 litres of automatic transmission fluid. (Use ATF fluids such as: Dexron III, Dexron VI, Mercon V, Mercon LV or similar grade) Make sure the funnel used to fill the power unit oil reservoir is clean.

How long can you leave a car on quick jacks? ›

As long as the mechanical safety locks are engaged, you can leave a vehicle raised on a QuickJack lift indefinitely.

How long does it take to set up QuickJack? ›

Getting started involves a 30-minute setup (give or take), as well as an initial testing process that only needs to be done once. After that, there's very little maintenance to fuss over, and we expect your QuickJack to last for many, many years of easy, reliable service.

How much PSI does an air jack need? ›

Step 3: Check the available air pressure
Air Hydraulic Jack ModelAir Pressure Required
30, 50, 80 Tons models116-174 PSI / 8 - 12 bars
100 tons model130 - 174 PSI / 9 - 12 bars
For reference, here is the required pressure for the Chicago Pneumatic models

What is PSI should an air inflator be? ›

Pressure: The pressure capability of a tire inflator directly affects inflation speed. Choose a compressor with a minimum of 6.89 bar (100 psi) for faster inflation. Most inflators can easily fill car tires to 2.06 - 2.76 bar (30 - 40 psi).

What is the purpose of the air cylinder in the QuickJack system? ›

QuickJack uses an electric over hydraulic power unit to lift its frames and get vehicles in the air. What you might not know, however, is that each frame of the portable car lift assembly is also outfitted with an air cylinder. This device assists with the lowering of the QuickJack frames.

What PSI should I air down to? ›

The ideal pressure can vary based on the specific off-road conditions. For sand, a lower pressure in the range of 12-15 PSI may be ideal. For mud, a slightly higher pressure, around 15-20 PSI, can work better. When driving over rocky terrain, a pressure of 15-25 PSI is often recommended.

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