PSA gearbox input shaft recall campaign

[allikanbe]

Recall campaign no. 23V-011:Gearbox input shaft. 2019-2023 BMW r1250gs, gsa, rt models. Took my bike to Adv BMW today to get the software update for this recall. Took about 2 hours. Contact your dealer if you have not received a letter and you own one of these bikes.

[Capnrip]

Good info Keith, thanks.

[aviator]

I took it in the other day, 2020 GSA with 5k on it. They had to replace the driveshaft as it failed the check 3 times.

[Lee]

Did you take in in for the software recall or the earlier one where they put a vent in and also check the driveshaft?

[aviator]

Both. Had to make an appointment.
All done now.

[802Mike]

Why did they have to replace the driveshaft ?

[aviator]

the cardans are not set right and it failed the test, so they replace under warranty. All 1250s should be checked.

[Lee]

They have also been replacing them when they find rust on the U joint.

[802Mike]

What's the problem with the gearbox input shaft ?
How do they test it ?

[allikanbe]

On January 18, 2023, BMW of North America announced a safety recall for all 2019 through 2023 R 1250 GS, R 1250 GS Adventure, and R 1250 RTP motorcycles due to the potential risk of a broken gearbox input shaft. In certain conditions, the gearbox input shaft could become overloaded, causing it to break. This could, in turn, block the rear wheel, which could increase the risk of a crash. I don't know the test

[Lee]

How do they test it ?

Maybe he's talking about the campaign that came out last summer.
The recent recall is just a software download.

R 1200 GS, R 1250 GS and official RT

Apparently, a conspicuous accumulation of cardan defects was found in the Boxer GS from year of manufacture 2013 (with water-cooled engine) and in the R 1200 RT and R 1250 RT in the official version. With the GS, the cardan is subject to greater stress due to the concept, because of the longer spring deflection and the associated articulation angle between the cardan tunnel and the rear axle drive. This is where the cardan's rear universal joint is located. In addition, depending on the user, there is more or less tough enduro use. In any case, the authorities' RT are subjected to above-average strain, for example when driving over high curbs.

Cardan check with special device

So that the cardan does not have to be opened on all 440,000 motorcycles concerned, every authorized workshop is to be given a special test device. Instead of the rear wheel, a measuring disk is mounted, and then the cardan is dragged over the rear axle while idling, that is, rotated. This stress test runs over various load changes and speeds, with sensors monitoring the forces and vibrations. If everything stays within the predefined normal range, the checked gimbal is considered "okay". If there are any abnormalities, a closer look is taken. In particular, the universal joint with its four roller bearings, but also the gearing to the rear axle drive is checked for rust and damage. Should parts then have to be replaced,

Vent hole with beak valve

In principle, a vent on the cardan tunnel is retrofitted during this service campaign. For this purpose, a small hole is drilled on the underside in the rear area, near the universal joint, using a prepared template. In order to avoid the formation of potentially harmful metal chips, the drill should be lubricated beforehand. A rubber beak valve is then inserted into this hole using a kind of piercing tool. This special valve is intended to seal the hole to the outside, but allow air and, above all, moisture to escape from the cardan tunnel. This ventilation is supported by the pumping movements during compression and rebound. If water runs out immediately after drilling, this is also a reason to inspect the cardan more closely.

45 minutes per motorcycle

A total of 45 minutes are allotted for the cardan check including retrofitting the ventilation. Of course, this campaign is free of charge - at least for the customers, BMW will incur some costs.

[802Mike]

Lee, so what exactly is the cardan?

[Lee]

A Cardan is a driveshaft with a U-joint at each end.
Lately I also noticed BMW using the term Prop Shaft in the parts fiche.

RS driveshaft https://www.shopbmwmotorcycles.com/o...ft-33735a670c3

[aviator]

Most parts of the world (outside the USA) they are called propeller shaft, even in cars.

[Lee]

The RS is not included in the campaign were they check the driveshaft but near the end of our warranty I plan to pay the shop to lube the splines. If they find rust we can get free driveshafts.
If they install the duckbill drain I would want a spare as I can see knocking it out when washing and not notice.