A step inside of Audemars Piguet’s US Service Center to see my Royal Oak receive a factory service (Part II)

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    Watchmaker evaluating dial side of movement before servicing

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    Finished movement prior to re-casing

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    Escapement regulation

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    Watchmaker’s bench prior to parts cleaning

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    Movement after servicing and prior to rotor installation

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    The finished dial side of the movement

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    Main watchmaking floor at AP’s Clearwater facility

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    Placing the new dial on the movement

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    High polish angles are refinished prior to satin finishing

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    Case angles being re-beveled

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    Satin finish being applied to the bezel

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    Watch is sent to quality control

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    Quality control testing

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    As the case is spun in a lathe, the refinisher applies a satin finish

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    Case angles being re-beveled

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    The finished case

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    Pressure (waterproofness) testing

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    Bracelet refinishing

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    Removing the movement from the case

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    Final case cleaning

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    Caseback screws are torqued to AP spec

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    The back case after sandblasting

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    Bezel re-installation

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    Hand alignment

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    Re-casing with finished and new parts


Movement servicing

The main watchmaking floor at AP Clearwater is a sight to be seen. Before entering, guests and employees are required to don shoe booties (to protect from dust and dirt). The watchmaking room resembles more of a clean room than a facility for repairing and servicing luxury timepieces. Each watchmaker has a state of the art workbench and all of the tools they need to do their jobs. The watchmakers are assigned their daily work by their manager and the workload is prioritized by challenge and complications to ensure the watchmaker has a wide variety of different pieces to work on throughout the week.

IMG_2155.jpgThe movement is disassembled to the main plate and parts are put into a carriage for cleaning

My watchmaker, Billy Janshon, was assigned my piece earlier in the week. He has been with AP for 15+ years and he was very excited to show me his craft. At minimum, each AP watchmaker is trained on AP’s base movements. After a few years, the watchmakers are able to take certification classes to expand their knowledge and take on other complications (like chronographs, day-date, moonphase, perpetual calendar, equation of time, tourbillon, minute repeaters, etc.).

IMG_3579.jpgThe author watches the master craftsman at work

Billy began the movement servicing by stripping my 2124-2825 movement down to the base movement (removing the complications). Once the complications were removed, the movement went through a visual inspection and was placed on a timing machine. After close inspection, we saw that the lubricants in the jewels and pallet fork had all but dried up. Additionally, the mainspring barrel was worn, and the watch was keeping poor time. Once Billy was able to diagnose the issue, we did the second round of parts procurement and the remaining movement parts were sent to the ultra-sonic cleaner.

IMG_2928.jpgMy movement prior to servicing

After we had a fully disassembled movement, and all of the right parts to bring it back to life, Billy began the process of re-assembling the movement. Any part that was subject to normal wear and tear (mainspring, mainspring barrel, some gears, screws (if scratched), and seals were replaced. The oscillating weight (aka rotor) was replaced with a newer version with ceramic bearings. The newly reassembled, cleaned, and lubricated movement really began to look like new. Once the movement was back together, Billy gave it an ever so slight flick and the balance spring roared back to life! It was great seeing the heart of my watch beat again.

IMG_3918.jpgOscilating weight (rotor) is installed

Getting the movement cleaned, serviced, and operational again is just the start of an AP service. Once the movement was ticking, Billy got to work regulating the escapement to the new balance spring (by hand) and worked to get the timing to spec. Once the movement was beating at the right rate and amplitude we tested for an extended period of time on a timeographer. Once Billy was satisfied with the tests results, the hands and dial were put back onto the movement.

The movement will go through a series of further tests before it’s ready to be put back into the watch. For now, let’s head to the refinishing room.


For my piece, we opted for a light refinishing. AP advises that a timepiece’s case, bezel, and bracelet can usually only be re-finished up to five times through the watches life. (Depending on the thickness of the part and how much material is removed each time)
So for those of you looking to refinish your watch every time it’s serviced, keep in mind this can reduce the lifespan of your watch. Refinishing is an invasive process that takes metal away in return for restoring the luster of a watch.

IMG_3440.jpgAP refinisher at work

The refinishing room at AP Clearwater resembles a jeweler’s lab. I was surrounded by various polishing machines, lapping machines, cleaning equipment, and even a laser welder! Since I opted for a light refinishing, the re-finisher (Rick) began by resurfacing the angles on my bezel. The bezel of the Royal Oak has three different polishes (satin on the front, high polished on the side angle, and a small satin angle where the bezel meets the case). Rick began the tedious process of restoring the bezel angles by putting the bezel into a custom AP clamp and then refinished each angle by hand on a lapping machine.

IMG_3690.jpg High complication watchmaker’s bench

For me, the most impressive part of the bezel refinishing was the restoration of the satin finish to the top side of the bezel. The bezel was placed in the special clamp and was then run across high grit sandpaper until all of the scratches were removed and the bezel looked like new. Bracelet refinishing is akin to a similar process as the bezel. The satin surfaces are put through a similar refinishing process and the angled edges are sharpened via the lapping machine.

Next up was the case, which was put through a similar process as the bezel. The lapping machine was used to restore the angles, and polishing wheels were used to restore the high polished angle on the backside of the case. A small lathe was used to restore the circular satin finish on the base case (where the logo and serial number reside). One of the more notable textures on the back case is the sandblasted case edges. Rick delicately taped off the edges of the piece and sandblast the remaining metal.

IMG_3066.jpgBezel satin finishes being touched up

Essentially, every angle, satin finish, and high polish surface was refinished by hand. Seeing this painstaking process over the course of the week really restored my faith in high watchmaking. The end result was just incredible.

Once the case, bracelet, and bezel were refinished they were put through another cleaning, and then everything was sent back to the watchmaking room after being inspected, reassembled and the case pressure tested.

Reassembly and testing

Once the movement and case/bracelet parts were complete, both the refinishing and watchmaking kits went back to Billy’s bench. Billy carefully placed the movement into a case ring and gasket (sort of a rubber exoskeleton to protect the movement from water infiltration) and began to insert the crown tube, crown, and other gaskets. The movement slid back into the case like a glove and Billy did a final check of the fit and checked for dust under a microscope before placing the crystal on.

IMG_2866.jpgAP watchmakers evaluate and triage newly received pieces

Once the movement was snug in the case, the crystal gasket was applied over the crystal and the bezel was fit to the case. Everything was secured by the Royal Oak’s signature case screws torqued to AP specs. The assembled case was given a final visual inspection and placed in a pressure tester to check for water tightness. The finished case passed with flying colors. Finally, the bracelet was attached to the case and sent to QC (quality control).

IMG_2938.jpgPrior to service, the movement undergoes a timing test


After my watch was re-assembled, it was sent to AP’s QC department. While the QC department is located right off of the main watchmaking floor, not much is known about AP’s QC procedures. The brand keeps their QC processes a tightly guarded secret. While the servicing of my watch took multiple days, the QC process can take up to two weeks. What we do know, is that during QC the watch is tested in multiple positions under a variety of different environment conditions. QC is the final step in any servicing and after a successful QC test, the watch will be shipped back to the owner or originating boutique.

IMG_4073.jpgPacking the watch prior to shipment to customer (me)

Final thoughts

Audemars Piguet prides itself on its high horology and craftsmanship, and AP’s independent spirit makes all of this possible. While in Florida, I was treated like a member of the AP family. Strapping my newly serviced watch back onto my wrist for the first time in months felt great. I hope this article has helped to lift the veil on the servicing process. If you take anything away from this article, I hope you have a new appreciation for the workmanship that goes into servicing a timepiece. For many collectors, the prospect of servicing their watch many years after the initial purchase may seem like something they never have to think about. Keeping on top of these service intervals can be key in making sure your watch runs for many years to come.

IMG_2272.jpgThe finished product!

In the past few years, I’ve seen many comments on Instagram and forums about servicing horror stories. I can tell you firsthand that sending your watch in for servicing isn’t something you should bid out to the lowest bidder. Sending your watch back to the brand that manufactured it can bring many benefits. Think of it, if you have a Ferrari, why would you take it to a Chevy dealer for an oil change? The same goes for watch servicing, most brands have access to a full range of parts and highly-trained talent. After taking a watchmaking class while in Florida, I can attest that AP’s training and post-sales service is second to none. If you’re in the Clearwater area, and are an AP owner, stop by for an espresso!

One note on accessories, the AP Clearwater facility stocks a wide range of aftermarket metal, leather, and rubber straps for most of the pieces they’ve sold. Their strap selection software can help you chose the right strap for your piece, and even provide a visual of what the strap would look like. For more information, contact: [email protected]


For more information on Audemars Piguet servicing, go to https://www.audemarspiguet.com/en/service

Part I: “A step inside of Audemars Piguet’s US Service Center to see my Royal Oak receive a factory service”