I’ve Wasted $12,000 on Crane Rentals So You Don’t Have To: A 5-Step Pre-Order Checklist for the Potain MDT 809

If you’re looking up “potain mdt 809 crane rentals,” you’re probably in the middle of a mid-rise project. You’ve done the math. You know the MDT 809’s luffing jib is perfect for tight city sites. I get it. I was you four years ago.

I’ve been renting tower cranes for almost seven years now. In that time, I’ve personally made (and meticulously documented) about nine significant mistakes. Collectively, they cost my company roughly $12,000 in wasted rental fees, standby charges, and one particularly embarrassing re-engineering fee. I now maintain our team’s pre-rental checklist. This is that checklist.

The biggest and most expensive mistake I ever made was on my second project. I ordered an MDT 809. The quote was competitive, the delivery date was perfect, and I hit “approve.” The crane arrived, we assembled it, and then… it was the wrong configuration for the job. The luffing range I needed was different. The load chart I had was for a different jib length. We had to pay for a standby day while a new configuration was brought in. That was a $3,200 lesson.

Here’s the 5-step checklist I use now. It’s not complicated. But if you skip a step, you’re gambling with your timeline and budget.

Step 1: Download and Annotate the Load Chart—Don’t Just Glance at It

When you get a quote, the first thing you should ask for isn’t the price. It’s the specific load chart PDF for the exact crane model and configuration being offered. For the Potain MDT 809, this is crucial.

People assume the load chart is just a spec sheet. The reality is it’s a contract. It defines the capabilities. What I do now:

• I download the PDF (search for “potain tower crane load chart pdf” for the model).
• I print it out.
• I mark my three most demanding lifts on the chart with a red pen.

On my $3,200 mistake, I was using a generic MDT 809 chart. I didn’t notice it was for a 45m jib, but the rental company was quoting a 40m jib. The load capacity at my furthest pick point was about 15% less than I needed. The crane could lift it, but not at the radius required. (Note to self: always confirm the jib length in the quote, not just the model number).

Step 2: Verify the Luffing Performance for Your Specific Site

This is another one of those steps most people gloss over. The MDT 809 is a luffing jib crane. That means the jib angle can change, which is perfect for working over existing structures or in a tight airspace.

But the luffing performance changes with the load. The chart will show you the load capacity at different jib angles. If you are lifting over a building that’s 30 meters tall, you might need a jib angle of 60 degrees. At that angle, the crane’s capacity is reduced.

I once caught a potential problem using this step. The rental company’s site plan showed the crane in a “free luffing” zone. What they didn’t tell me was that the luffing range was limited by a building next door. We would have had to stop work for the first two weeks until the building below was finished. We negotiated a different boom point height before signing. My procedure now is to draw a simple cross-section of your site and the crane’s luffing envelope. Mark the obstacles (the reality). Don’t rely on the “standard” configuration.

Step 3: Ask About the “Rental Package” Components in Detail

Here’s something vendors won’t tell you: the headline rental price for a “potain mdt 809 crane rentals” often doesn’t include everything you need.

The crane is the star, but it needs a supporting cast. Does the quote include:

• Operational manuals (some renters charge extra for them)?
• The climbing frame or tie-in collars?
• Transport and assembly/disassembly (this is often a separate line item)?
• Remote control (if required)?

I went back and forth between two rental companies for a week. Company A had a lower rental rate for the MDT 809. Company B was $800 more per month. I created a spreadsheet of “extras” and asked both for a full breakdown. Company A’s “extras” (transport, a specific manual, climbing gear) totaled $1,200 more than Company B’s completely inclusive package. Company B’s higher upfront rate was actually cheaper in total. The vendor who lists all fees upfront—even if the total looks higher—usually costs less in the end.

Step 4: Clarify the Load Chart Usage Policy

This is a technical detail that can cause big problems. The load chart is not just for picking the crane. It’s also a contractual document that defines what you’re allowed to do with the rented crane.

Can you operate the crane at 100% of its charted capacity? Some rental companies have a 90% operating policy for safety reasons. Others have different policies for different load types (e.g., concrete bucket vs. prefab steel).

I have mixed feelings about this. On one hand, a 90% policy is very safe (no surprise there). On the other, it reduces your effective capacity by 10%, which could mean you need the next size up. I always clarify this in writing now. In one instance, a 90% policy meant our planned pick was too heavy at our needed radius. We had to use a different lift plan, which cost us a day of labor. A simple email would have prevented that.

Step 5: Confirm the “What’s Not Included” Costs

Even after following Steps 1-4, you might miss a fee. This is the final sanity check.

“Potain” is a premium brand. The parts and service network is excellent. But it comes at a cost. Ask for a complete list of potential extra charges:

• Standby fees: What happens if the crane arrives but your site isn’t ready? You pay for the crane to sit idle.
• Demurrage: For parts or specific configurations not returned on time.
• Overtime for the operator (if provided by the renter): You might be charged different rates for a 10-hour day vs. an 8-hour day.
• Engineering support: If you need a site-specific foundation design from Potain’s engineers, that’s often a separate fee.

(Mental note: I once missed a “weather standby” clause. The crane was technically available, but a storm made it unsafe to operate. The bill still came. That was a $450 oversight).

A Final Piece of Advice (from the School of Hard Knocks)

Most people think renting a tower crane is easy: get a quote, sign, assemble, lift. The reality is that a crane rental is a complex service contract. The price on the first page is never the final price if you haven’t asked the right questions.

This checklist won’t eliminate all risk—I still get surprised sometimes. But it has saved me from at least four major mistakes in the last two years. It’s saved me money, and more importantly, it’s saved my credibility with my project team. Hit ‘approve’ only after you’ve checked every box.