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Author [NL] [FR] [ES] [DE] [SE] [IT] [NO] [MY] Topic: Risk of premature degradation of Rocker Arm on F750/850GS. MC64011504  (Read 1305 times)

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Offline Nicolas Epelly

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Dear all,
it seems that it has been published by BMW  an Notice on a problem with F750GS/F850 Rocker Arms (also concerning R1200 ,and S1000)
see Notice BMW MC64011504 concerning premature degradation of  rocker arms (culbuteurs in French)  in F750 GS / F850 GS .
information reported in https://afmb.fr/usure-prematuree-des-culbuteurs-sur-f850-r1200-s1000/

to be double checked .

hard copy sorry in French : https://images.850gs.com/Note-BMW.png

have you been aware of  such a problem ?
if it is proven it seems there is a code to provide to your dealer for the operation free of charge to replace those rocker ams : 11 33 00 28
« Last Edit: September 09, 2020, 02:24:57 PM by Nicolas Epelly »
Alokin

Offline Dazi

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Re: Risk of premature degradation of Rocker Arm on F750/850GS. MC64011
« Reply #1 on: September 09, 2020, 02:59:00 PM »
Hi Nicolas,
This looks like a serious issue.
I will check with my dealer if they received such a notice when i collect my bike.
A few of us here complained about strange noises coming from the engine, maybe the reason was this ?
« Last Edit: September 09, 2020, 03:01:30 PM by Dazi »

Offline Nicolas Epelly

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Re: Risk of premature degradation of Rocker Arm on F750/850GS. MC64011
« Reply #2 on: September 09, 2020, 03:05:44 PM »
yes Serious issue
and the article in French mention that the primary symptom is indeed strange noise from the engine like a sewing machine (may be the rocker being damaged hurting some other part of the motor)
Alokin

Offline pringles21

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Re: Risk of premature degradation of Rocker Arm on F750/850GS. MC64011
« Reply #3 on: September 09, 2020, 06:05:42 PM »
Hello, this issue came out last year, here is the bulletin in English: https://static.nhtsa.gov/odi/tsbs/2019/MC-10165251-9999.pdf

According to it, they were working on a new version but are replacing them with the older style until the new ones are ready, I wonder if they have released them. I'll take a look at mine(manufactured Dec. 2019) when it's time for a valve clearance check.

Offline Nicolas Epelly

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Re: Risk of premature degradation of Rocker Arm on F750/850GS. MC64011
« Reply #4 on: September 10, 2020, 08:20:11 AM »
Hello and thank you for your contribution to this topics.

In my humble opinion  taht we need collectively continue to collect information on this issue in order to better understand how to detect when it occurs and how to trigger the free of charge of operation while under warranty.
your experience is helping us in that direction. Can you update us when you are going to be for your  next maintenance ?
 
Many thanks

Nicolas/Alokin
Alokin

Offline Hommes

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Re: Risk of premature degradation of Rocker Arm on F750/850GS. MC64011
« Reply #5 on: September 17, 2020, 01:48:38 PM »
*Originally Posted by pringles21 [+]
Hello, this issue came out last year, here is the bulletin in English: https://static.nhtsa.gov/odi/tsbs/2019/MC-10165251-9999.pdf

According to it, they were working on a new version but are replacing them with the older style until the new ones are ready, I wonder if they have released them. I'll take a look at mine(manufactured Dec. 2019) when it's time for a valve clearance check.

As the engines are produced in China, there is going to be a gap between the engine being built and when the bike is manufactured.  My 850GS was manufactured in July 2019 but  the engine may have been produced many months earlier.
I have definitely noticed the ticking and sewing machine sound coming from the head. It wasn't there when new. But after the first 1,000 miles i started to hear it and it's gradually got louder. I'm almost at 3k now.

Offline Nicolas Epelly

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Re: Risk of premature degradation of Rocker Arm on F750/850GS. MC64011
« Reply #6 on: September 18, 2020, 04:30:58 PM »
Hello and tank you for your contribution
I might in the same situation but I am not sure to ear it as clear as you did.
What do you intend to do next ?
Are you waiting for the next Maintenance ?

many thanks fo sharing.
Alokin

Offline alin156

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Re: Risk of premature degradation of Rocker Arm on F750/850GS. MC64011
« Reply #7 on: September 18, 2020, 07:14:05 PM »
Since I've read these posts I've also noticed the ticking sound. Since I'm at 10k km, I will be asking about it at the dealer when I'll go for the service - sometimes in the next 2 weeks

Offline Nicolas Epelly

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Re: Risk of premature degradation of Rocker Arm on F750/850GS. MC64011
« Reply #8 on: September 24, 2020, 07:58:57 AM »
Hello thanks for you contribution.

Keep us updated.
We might try to register the characteristic sound in order to share with the community. On my side I am not really able to certify that I have this sound.

Regards
 
Alokin

Offline Hommes

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Re: Risk of premature degradation of Rocker Arm on F750/850GS. MC64011
« Reply #9 on: September 24, 2020, 05:07:11 PM »
Update. I have been  in contact with my Motorrad dealer about the noise from the engine.  I also sent them a copy of the BMW notice. They have no knowledge of this notice before now and have been in contact with BMW Motorrad UK about it and are awaiting further information from them. Hopefully next week.
The dealer thinks it could warrant an investigation and inspection of the affected parts but they are not aware of a modified part number for the rocker arm, so thinks that if there is any premature wear in the arms, they would have to be replaced with the old type rocker arms.
I will update further when I know more.