Hi
When should I change the oil on my 1200S final drive?It's got 19000kms now.
Thanks
Final drive oil change
Moderators: Gromit, Paul, slparry
The 'maintenance free' drive is now recommended for service at 600 miles then at every 6000 mile service.
If yours has not been done yet then if definitely needs doing.
The latest service instruction decreases the amount of oil. If you need a copy of it PM me your email and I will send you a PDF.
It's an easy job to do. The only awkward bit is getting the fresh oil back in. I use a large syringe I got from the vet which means I can accurately measure the amount I put in.
If yours has not been done yet then if definitely needs doing.
The latest service instruction decreases the amount of oil. If you need a copy of it PM me your email and I will send you a PDF.
It's an easy job to do. The only awkward bit is getting the fresh oil back in. I use a large syringe I got from the vet which means I can accurately measure the amount I put in.
********Jim********
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2006 'Colgate' R1200s
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2006 'Colgate' R1200s
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Harry Lime
- Member
- Posts: 549
- Joined: Fri Feb 20, 2004 9:01 am
Herb wrote:
The latest service instruction decreases the amount of oil.
Seems strange, I'm inclined to agree with Steptoe, I always feel happier putting a "little more" oil in anything rather than a "little less" , however, I know too much can pop seals etc so best to follow recommendations.
Wonder why the service recommendations are changed ?
Simon.
K100rs, R1100s, R1150rs, R1200st, K1300s
K100rs, R1100s, R1150rs, R1200st, K1300s
The amount of oil in the FD has been revised by BMW from 220 to 180 ccm. And that for good reason.
The FD originally did not have any degassing/vent (later the FD was modified) and the oil filling of 220 ccm resulted in foam building up in the FD. As a result the front AX bearing did not get enough lube and heated up beyond specs. As a further result the plastic cage breaks and dissolves. And then the bearing fails.
The FD was later modified (new version has a drain plug on the bottom and and a vent). But for the previous FD the amount of oil was reduced in order to reduce foam building up in the FD ...
If you have the "old" FD and if you want to reduce the possibility of damage I can only suggest to stick to the official amount of 180 ccm.
A good howto can be found here http://www.r1200gs.info/howto/reardrive.html
Brgds
Oliver
The FD originally did not have any degassing/vent (later the FD was modified) and the oil filling of 220 ccm resulted in foam building up in the FD. As a result the front AX bearing did not get enough lube and heated up beyond specs. As a further result the plastic cage breaks and dissolves. And then the bearing fails.
The FD was later modified (new version has a drain plug on the bottom and and a vent). But for the previous FD the amount of oil was reduced in order to reduce foam building up in the FD ...
If you have the "old" FD and if you want to reduce the possibility of damage I can only suggest to stick to the official amount of 180 ccm.
A good howto can be found here http://www.r1200gs.info/howto/reardrive.html
Brgds
Oliver
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The Teutonic Tangerine
- Posts: 1646
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- Location: Essex
- Contact:
Steptoe wrote:Try adding 200-210mm rather than 180.
180 just isn't enough oil.
NO NO NO - DO NOT OVER FILL - There is no breather on these final dive units and when teh oil gets hot it expands. The Stealer (non BMW) who serviced my bike before I bought it overfilled it and it blew the large bearing seal. Itss till weeeping now - I must get round to chaging it this winter. It's been leaking the last 10,000 miles, The reason we say 180 is beacuse the capacity is 200 and you just cannot drain it all out unless you leve it for a couple of days. 180 is certainly enough oil, four teaspoons full too little won't cause it to wear out but four teaspoons full two much can blow the seal.
There would appear to be a surfeit of prolixity and sesquipedalian content today please do not use a big word when a singularly un-loquacious and diminutive linguistic expression will satisfactorily accomplish the contemporary necessity
As well as the oil expanding due to heat, the air in there will also reach a similar temperature. Air also expands with heat. A compound effect.
Gearbox oil also expands due to churning. Although, in an enclosed casing with no vent, that raises an interesting question. If churning is essentially aeration, then surely it can only be mixing in air that is "trapped" in there with it? So I'm not convinced that churning itself will cause any increase in air pressure. In a "conventional" set up, with breather plug, the churning causes a rise in oil level, but surely only by taking air on board.
The heat produced definitely will expand the oil and the air though.
Glad to hear they've seen sense and gone back to a breather plug (according to omg1010).
Gearbox oil also expands due to churning. Although, in an enclosed casing with no vent, that raises an interesting question. If churning is essentially aeration, then surely it can only be mixing in air that is "trapped" in there with it? So I'm not convinced that churning itself will cause any increase in air pressure. In a "conventional" set up, with breather plug, the churning causes a rise in oil level, but surely only by taking air on board.
The heat produced definitely will expand the oil and the air though.
Glad to hear they've seen sense and gone back to a breather plug (according to omg1010).
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