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Author Topic: F800GS 80 000km maintenance  (Read 1148 times)

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Offline Bill the Bong

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Re: F800GS 80 000km maintenance
« Reply #20 on: November 14, 2018, 09:13:47 am »
Here is an injector inside the ultrasonic cleaner. The brown spots show what comes from inside the injector.
« Last Edit: November 14, 2018, 09:19:31 am by Bill the Bong »
 

Offline Bill the Bong

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Re: F800GS 80 000km maintenance
« Reply #21 on: November 14, 2018, 09:15:17 am »
Cleaning the injectors definitely perked up performance a bit, but the ticking remains.  So I'll finish up the rally tower build on my Honda and do a valve adjustment shortly.
 

Offline Moondog

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Re: F800GS 80 000km maintenance
« Reply #22 on: November 14, 2018, 03:52:03 pm »
At 80 000 plus kilos, when doing the clearances, I would recommend that the cam chain tensioner plastic arms are replaced too. My experience was not a common one (piece broke off tensioner arm, was chewed up by the gearbox, then seized the oil pump) but I think it is worth doing that replacement proactively.
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Offline zacapa

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Re: F800GS 80 000km maintenance
« Reply #23 on: November 14, 2018, 05:14:44 pm »
Good to see I'm not the only one using 15W40 Diesel oil in my bikes. Have been doing it for many years and my bikes are all happy for it. My grandfather was first to start this habit with his 750 racing BMW sidecar outfit back in the 1950's so I guess the habit has gone through 3 generations. Was called Shell Rotella back in the day in Germany.
Walked past Supertech BMW at Watercrest Mall the other day and saw the new 850. I was more interested in what they would discount the F800GS for as seeing it is now an outgoing model. 130K for a 2018 F800GS basic. Good deal I thought and I put the good news out on my whatsapp riding group. 2 days later my mate Dave took delivery of his new F800GS Trophy from the Pinetown shop, also for a good heavily discounted price. Out of all the modern BMW GS series bikes the F800 is the only one I would consider at some point in my future.Now if my 1994 Africa Twin wasn't so damn near perfect, paid off and reliable this would happen sooner.
 

Offline Bill the Bong

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Re: F800GS 80 000km maintenance
« Reply #24 on: November 14, 2018, 06:13:06 pm »
At 80 000 plus kilos, when doing the clearances, I would recommend that the cam chain tensioner plastic arms are replaced too. My experience was not a common one (piece broke off tensioner arm, was chewed up by the gearbox, then seized the oil pump) but I think it is worth doing that replacement proactively.

Thanks for that, I値l certainly consider it. I already run a manual tensioner. It has a moerse long chain that apparently oscillates quite a bit.
 

Offline Bill the Bong

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Re: F800GS 80 000km maintenance
« Reply #25 on: November 14, 2018, 08:01:00 pm »
I see that the rear guide rail requires the clutch cover to come off to access the bolt at the bottom.  Will add a couple of hours to the job.  But the guide rails are pretty cheap.
 

Offline BlueBull2007

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Re: F800GS 80 000km maintenance
« Reply #26 on: November 15, 2018, 03:43:07 pm »
Impressive stuff, I learnt something today. Thank you all. :thumleft:
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Offline Tom van Brits

Re: F800GS 80 000km maintenance
« Reply #27 on: November 15, 2018, 07:55:24 pm »
Sub

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Offline Bill the Bong

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Re: F800GS 80 000km maintenance
« Reply #28 on: January 21, 2019, 01:44:36 pm »
Yesterday I started stripping to do the valve adjust.  Remember the annoying ticking I was hearing?  Normally bikes go tighter as the valves wear, but I was rather certain that I had a loose clearance somewhere.  So, yesterday I started the disassembly.  Took me about  3 hours before I had the shims in a holder and the values written down.  It is rather amazing to what extent you need to remove stuff to get access on this bike.

In any way:  all 4 intake valves and 1 exhaust valve need shimming.  All 5 are too loose.  First time I've seen that.  I need to buy 4 shims.  At R150 a pop (for essentially half a ball-bearing), it leaves a metallic taste in the mouth.  I'll see today what BMW Motorrad has in stock in South Africa.  If everything is available, I'll be able to finish the job by the weekend.

Although it is recommended that the tappet cover gasket replaced, I'm much too frugal to pay R1700 for a rubber gasket.  I'll slather the snot out of it with gasket maker.
 

Offline Gee S

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Re: F800GS 80 000km maintenance
« Reply #29 on: January 21, 2019, 03:06:16 pm »
At 80 000 plus kilos, when doing the clearances, I would recommend that the cam chain tensioner plastic arms are replaced too. My experience was not a common one (piece broke off tensioner arm, was chewed up by the gearbox, then seized the oil pump) but I think it is worth doing that replacement proactively.

Thanks for that, I値l certainly consider it. I already run a manual tensioner. It has a moerse long chain that apparently oscillates quite a bit.

Hi Bill, Could you please give more detail about the manual tensioner. I suspect that I will have to change my timing chain, tensioner and guides pretty soon.
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Offline Black_Hawk

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Re: F800GS 80 000km maintenance
« Reply #30 on: January 21, 2019, 03:43:24 pm »
 :sip:

Very interesting thread  :thumleft:
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Offline Bill the Bong

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Re: F800GS 80 000km maintenance
« Reply #31 on: January 21, 2019, 07:27:15 pm »
At 80 000 plus kilos, when doing the clearances, I would recommend that the cam chain tensioner plastic arms are replaced too. My experience was not a common one (piece broke off tensioner arm, was chewed up by the gearbox, then seized the oil pump) but I think it is worth doing that replacement proactively.

Thanks for that, I値l certainly consider it. I already run a manual tensioner. It has a moerse long chain that apparently oscillates quite a bit.

Hi Bill, Could you please give more detail about the manual tensioner. I suspect that I will have to change my timing chain, tensioner and guides pretty soon.

I bought this specific one:
http://www.southerncaliforniamotowerks.com/store/p45/F800GS.html

I bought of eBay. However, in my opinion the stock BMW one will be fairly easy to convert as a DIY Project. I obviously determined this after paying R2100 for the one above🤣
 

Offline Weedkiller - Adie

Re: F800GS 80 000km maintenance
« Reply #32 on: January 21, 2019, 09:48:27 pm »
If you wanna see thingamajings, wannamabobs on a F800GS look here: http://www.wilddog.za.net/forum/index.php?topic=226149.0  dabble through the pages and you will find valuable info, and feel free to ask, I'mm gonna take years and years of info the the grave.  :imaposer:

It is not only about an 800 with fuel issues, stator issues, flat tires, electrical etc, etc,  It is about life.

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Offline Bill the Bong

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Re: F800GS 80 000km maintenance
« Reply #33 on: January 22, 2019, 06:28:47 am »
At 80 000 plus kilos, when doing the clearances, I would recommend that the cam chain tensioner plastic arms are replaced too. My experience was not a common one (piece broke off tensioner arm, was chewed up by the gearbox, then seized the oil pump) but I think it is worth doing that replacement proactively.

Thanks for that, I値l certainly consider it. I already run a manual tensioner. It has a moerse long chain that apparently oscillates quite a bit.

Hi Bill, Could you please give more detail about the manual tensioner. I suspect that I will have to change my timing chain, tensioner and guides pretty soon.

I bought this specific one:
http://www.southerncaliforniamotowerks.com/store/p45/F800GS.html

I bought of eBay. However, in my opinion the stock BMW one will be fairly easy to convert as a DIY Project. I obviously determined this after paying R2100 for the one above🤣

The original tensioner looks like this:
« Last Edit: January 22, 2019, 08:02:57 am by Bill the Bong »
 

Offline Bill the Bong

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Re: F800GS 80 000km maintenance
« Reply #34 on: January 22, 2019, 08:07:41 am »
The plug is steel. So you値l need to take it to an engineeering shop to drill it and tap a M8 thread through it.
A long 8mm bolt with a rounded off nose will do exactly the same job as the store bought version.  I dont think
youwould be able able to tap that hole at home with hand tools.
 

Offline Bill the Bong

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Re: F800GS 80 000km maintenance
« Reply #35 on: February 02, 2019, 01:34:04 pm »
Had to wait quite a while to get the shims in hand.  Motorrad only had 1 of the shims in stock, so my local dealer bought them out from Welkom.

Job took about 6 hours all in to complete.  Some thoughts if you want to DIY:

Remove the clutch and throttle cable to get the tappet cover in and out.
Smear some gasket sealant in the half moon cut-outs for the tappet cover.
After doing a number of dry fits to attempt the sliding in of the tappet cover, I removed the gasket and fit that to the head first (with some sealant).  That made refitting the tappet cover a breeze.

Some more thoughts:  based on my gaps, I should have done the first adjustment by 60 000 km.  I had an idea how long it would take, so I first had to buy a car for transport :xxbah: Not joking.

If you regularly visit the rev-limiter, I'd say that you need to have them checked by 50 000km.