The Potain MR 819 Tower Crane: My 6-Step Rental Checklist So You Don't Repeat My Mistakes

Who This Checklist Is For

If you’re about to rent a Potain MR 819 for a congested urban site or a high-rise project with tight airspace, this is for you. Specifically, you’re:

• A project manager or site superintendent who’s done this before, but not with a luffing jib crane.
• A crane rental coordinator who needs to make sure the specs and the access plan match.
• A procurement lead comparing quotes from different Potain dealers, trying to avoid hidden costs.

I’ve been on the rental side for about 5 years. For the last three, I’ve been coordinating our company’s Potain fleet deployments—covering the MDT, MCT, and the MR series. This checklist is the result of about $12,000 in avoidable mistakes I’ve personally documented. It’s got 6 steps. Skip one, and you’ll probably find out why I wrote it.

Step 1: Confirm the MR 819’s Jib Length and Luffing Arc Before You Order

This sounds obvious, but I’ve seen more than one person assume the “819” means a fixed jib length. It doesn’t. The MR 819 has a variable luffing jib. Depending on the configuration, you can get jib lengths of 35m, 40m, or 45m. The max tip load changes with each.

Checkpoint: Get the exact jib length and the corresponding load chart from your Potain dealer before you sign anything.

My mistake: I once ordered the 45m configuration for a site with a 42m radius limit. The jib couldn’t fully luff up without hitting a neighboring building. We had to swap the jib section on site. That cost $2,400 in extra crane time and a 3-day delay. The dealer rep later told me the 40m version would’ve worked fine.

Step 2: Verify Tower Section Compatibility and Foundation Plan

The MR 819 doesn’t just sit on any mast. It needs the right tower system—usually the P10 or P20 series sections, depending on the freestanding height and the loads. If your site has existing Potain mast sections from a previous job, don’t assume they’ll fit. The MR 819 needs specific adaptors for certain older tower systems.

Checkpoint: Have your dealer confirm the exact tower sections (make, model, quantity) and the foundation bolt pattern. Send this to your civil engineer to verify the concrete base can handle the loads.

I learned this one the hard way. We had a stack of old MDT tower sections in the yard. “They’re Potain. Should be fine,” I thought. They weren’t. The adaptor kit was a special order with a 3-week lead time. That mistake added $1,800 in rental extension fees for the mobile crane that was sitting idle waiting for the tower crane to go up.

Step 3: Don’t Just Compare Rental Quotes—Calculate the Total Deployed Cost

I’ve seen a lot of people focus on the weekly rental rate. That’s a trap. The real cost is:

• Rental rate (⤂/week or ⤂/month)
• Delivery and pickup (low-bed trucking + permits if oversize)
• Erection and dismantle (mobile crane hire + rigging crew)
• Foundation or ballast work (concrete, rebar, labor)
• Site crane access (road strengthening? turning radius for the delivery truck?)
• Insurance and damage waivers

Checkpoint: Ask your shortlisted Potain dealers for a full “Total Deployed Cost” quote. If they can’t give you a breakdown, that’s a red flag.

Two years ago, I picked a dealer whose weekly rate was $400 cheaper than the others. Seemed like a win. Then the delivery invoice came—they charged separate line items for the jib transport, the counter-jib, and the tower sections. Three trucks instead of two. That “savings” evaporated. The extra trucking cost $720. Add in the fact that the lower-rate dealer had a slower service response, and we ended up with a 2-week project delay when a sensor failed.

Step 4: Plan the Delivery Access and Set-Up Area (Including the Shelby Truck)

This is the step most people skip. The MR 819 luffing jib crane is a heavy piece of equipment. The components (jib sections, tower sections, power pack) arrive on flatbed trucks. If your site entrance can’t handle a 48-foot trailer, you’ve got a problem.

Checkpoint: Walk the delivery route from the nearest main road to the set-up point. Measure gate widths, check for low-hanging power lines, and verify the ground is compact enough for the truck’s weight. You’ll also need a clear area for the mobile crane to set up—usually about 20m x 20m for a 50-ton crawler.

We once had a delivery driver in a Shelby truck (a large tractor-trailer combo) show up at 6 AM. The gate was 11 feet wide. The truck was 10.5 feet wide. He could get in, but barely. Then he couldn’t turn around. We spent 4 hours manually unloading tower sections at the gate and shuttling them with a forklift. That cost $1,100 in extra labor and the driver’s waiting time.

Step 5: Bring the Right Power Drill and Hardware for Assembly

This sounds small, but I’ve seen it cause a full-day delay. The MR 819 uses specific bolt grades and torque specifications. You’ll need impact wrenches and drills that can handle high-torque fasteners. If your crew shows up with a standard 18V drill, they’ll struggle with the counter-jib bolts.

Checkpoint: Before erection day, confirm your crew has at least two high-torque 1/2-inch impact wrenches (like Milwaukee or DeWalt), plus the correct torque wrench that’s been calibrated. Have a backup power source (generator) in case the site power isn’t live yet.

I watched a crew spend 45 minutes on four bolts because their drill couldn’t handle the torque. They ended up using a ratchet and breaker bar. On a hot day, with 30 bolts to go. Not a good time. A proper power drill setup would’ve saved about 3 hours total.

Step 6: Confirm Operator Certification and Site-Specific Training

You’re renting a Potain MR 819. It’s a sophisticated machine with load moment indicators (LMI), anti-collision systems, and variable frequency drives. Don’t assume any crane operator can walk in and run it. The luffing jib operation is different from a top-slewing hammerhead crane. The control sequences for luffing up/down while slewing require specific training.

Checkpoint: Verify that the operator on your job site has a current certificate for luffing jib tower cranes (ask for their NCCCO certification or equivalent) and has at least 50 hours of seat time on a Potain luffing model. If not, negotiate a 2-day familiarization period with the rental company’s trainer.

I’ve linked this back to the broader question of “how to become a crane operator.” It’s not just about getting a license. Specialization on specific crane types (luffing, hammerhead, crawler) is what separates a skilled operator from a dangerous one. If you’re looking to hire or train operators, factor in this specialization.

A Few Final Warnings (From My Own Track Record)

Don’t skip Step 2. I know it’s technical and boring. The foundation plan and tower section compatibility are the number one cause of rental delays I’ve seen. A $500 mistake in planning can turn into a $5,000 field change order.

Write down everything. Verbal agreements with the dealer about delivery timing or spare parts availability are worthless when things go wrong. Get it in writing, even if it’s a quick email confirmation. (Note to self: I really should follow this one more consistently—I’ve been burned twice by “sure, we’ll have it there Tuesday” that turned into “next week”.)

This worked for us on domestic projects with predictable logistics. If you’re working on an international site, or a project with extreme weather or remote access, the calculus might be different. My experience is mainly with mid-size contractors in the US and Canada—I can’t speak to how these steps apply to a jungle project in South America or a high-rise in Dubai.