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1Back to top Go down    Sprag Clutch issue? on Mon Mar 26, 2018 7:34 pm

fox1486

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For those that haven't read my intro, I just picked up a few K bikes. I have no prior knowledge of these bikes, and am learning along the way. As I start my process of getting the K100's up and running, I'm concentrating first on my Fairing bike. I'm trying to diagnose a no start issue. Here's what I have so far.

-Using a new Battery, so that's not the problem
-Pulled starter out to see it visually rotating, so that's not the problem
-Pulled out Spark Plugs to view Pistons, as well as the Crank Case Cover (CCC) to view crank. Motor turns over by putting bike in gear and rotating rear wheel. So motor is not froze up.
-Alternator Fins are turning when motor is being turned over by hand, nothing froze up there either.

So I'm coming back to thinking it's a Sprag Clutch issue. After searching the interwebs and this website, I stumbled upon photos that 88 (member on these forums) posted up. He describes being able to clean the Sprag, with access to the "3 holes" that you can see after taking the CCC off.

After attempting this yesterday, I can still NOT find these holes, even with rotating the engine. I reached out to 88 for some help, who contacted another member on these forums, with a 1984 RT. That member could also not locate the holes as described.

Not knowing a lot, I believe that the 1984 K100 may have the older "3 Roller Starter Clutch" setup. Perhaps that setup does not have the 3 holes, like the Sprag Clutch setup. This got me thinking:

1) Can anyone else with a 1985+ (Sprag Clutch) find these holes described?
2) Is it possible I have a 1985 Frame, with an older 1983-1984 Engine?

Any insight would be appreciated, as I'd love to get this solved and the bike fired up!

Here is a diagram of what I'm talking about:

    

2Back to top Go down    Re: Sprag Clutch issue? on Mon Mar 26, 2018 8:04 pm

kioolt

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You say you have a no start problem. Please describe it more. A no start problem can be interpreted many ways.


__________________________________________________
2004 R1150RT 186,800 miles
1991 K100LT 128,700 miles
1982 R100RT 106,900 miles
Total422,400 BMW miles

AMA,BMWRA,BMWMOA


The cheapest thing on a BMW is the nut that connects the handlebars to the seat.
    

3Back to top Go down    Re: Sprag Clutch issue? on Mon Mar 26, 2018 8:07 pm

Point-Seven-five

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I am assuming the starter is running, but it isn't turning the engine.

There is a technique for temporarily getting the sprag to work called the "Back Spin". Roll the bike backwards in 5th with the clutch in and then pop it out. This should jar the sprags so they will engage the starter.

What I did was to dump an entire can of SeaFoam cleaner in the crankcase. When the engine starts I ran it for about 50 miles and did an oil change. You may want to just let the engine run in your garage since you don't know how well it will run. Three or four 15 minute sessions in the garage and then drain the oil and change the filter. With any luck, it should start okay after the backspin, and the SeaFoam treatment will clean out the crap that is making the sprags stick.


__________________________________________________
Present:
1994 K75RT
1994 K75S
1992 K100RS

Past:
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

4Back to top Go down    Re: Sprag Clutch issue? on Mon Mar 26, 2018 8:29 pm

fox1486

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I should have been more clear on the no start.

Yes, the starter motor is spinning, but the motor is not turning over. Haven’t even got to seeing about spark/fuel, just yet. Trying to resolve the motor not turning over with the starter first.

We haven’t tried the rolling backwards trick yet. I’m picturing you physically rolling the bike backwards, at a good speed and popping the clutch in 5th. Is that what you’re saying? I guess the only way to know if that works, is to then use the starter to see if I can get the motor to turn over?

Once we actually get it running, we’ll do some sort of sea foam cleaning, and changing to a full synthetic oil.

Anyone have any experience with NOT finding the holes in the Sprag Clutch?

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5Back to top Go down    Re: Sprag Clutch issue? on Mon Mar 26, 2018 8:49 pm

Point-Seven-five

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Yes, just roll it back a couple feet. Best done as a two man job.


__________________________________________________
Present:
1994 K75RT
1994 K75S
1992 K100RS

Past:
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

6Back to top Go down    Re: Sprag Clutch issue? on Tue Mar 27, 2018 5:39 am

92KK 84WW Olaf

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I am 'the other member' who went looking for those holes and couldn't find them.On the engine just below the oil filler cap is the engine number. The first 4 digits give the time of manufacture. Mine are 3284 which was week 32 of 1984. I couldn't find the holes one day when I went at it for the fun of it...bike parked on patio, lovely sunny day and no real urge for a taking bike out mostly because I had covered almost 1,000 miles during the week. So I decided to clean it and then decided to puil the crank case cover off.

I didn't investigate further but no matter what way I looked in I could see no holes despite excellent instruction from 88. I actually came to the conclusion the case castings differed and that was the reason I couldn't see any holes.

Still interested in following this up as the RT is about to get a new MAF and FPR.


__________________________________________________
1992 K100LT 0193214 Bertha Alaska Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 58,645 now 84,600 miles
1983 K100RS 0011175 Fricka 29,000 miles Damn K Pox
    

7Back to top Go down    Re: Sprag Clutch issue? on Tue Mar 27, 2018 10:11 am

Inge K.

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@92KK 84WW Olaf wrote: Mine are 3284 which was week 32 of 1984. I couldn't find the holes

The three holes you find on early -85 models and on.


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

8Back to top Go down    Re: Sprag Clutch issue? on Tue Mar 27, 2018 11:16 am

92KK 84WW Olaf

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@Inge K. wrote:
@92KK 84WW Olaf wrote: Mine are 3284 which was week 32 of 1984. I couldn't find the holes

The three holes you find on early -85 models and on.

................... well its back to the drawing board then Cocktail

at least now I know I looked properly....


__________________________________________________
1992 K100LT 0193214 Bertha Alaska Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 58,645 now 84,600 miles
1983 K100RS 0011175 Fricka 29,000 miles Damn K Pox
    

9Back to top Go down    Re: Sprag Clutch issue? on Tue Mar 27, 2018 11:58 am

Laitch

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@92KK 84WW Olaf wrote:I am 'the other member' who went looking for those holes and couldn't find them.On the engine just below the oil filler cap is the engine number. The first 4 digits give the time of manufacture. Mine are 3284 which was week 32 of 1984. I couldn't find the holes one day when I went at it for the fun of it . . .
My puritanical roots inhibit me from having that much fun.

Discerning those holes on an oily assembly within such a small space must be challenging. If they don't exist on your model then you're left with few options. One is to do a disassembly using these fine instructions. Another is to do this exciting procedure.

If I were trying to start a bike that had clean fuel and a working ignition, I'd try popping the clutch in fourth or fifth gear during a downhill roll; that is, if I had a way to get it uphill after a disappointment.

Consider trying to fabricate a variation of this helpful tool. It should work.


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1995 K75T 68,000 miles
    

10Back to top Go down    Re: Sprag Clutch issue? on Tue Mar 27, 2018 9:10 pm

fox1486

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Went back to look today... no holes on the fairing bike. Decided to pull the Crank case cover off the Frankenstein bike:




Right there in my face! affraid

So, it seems that the Fairing bike does NOT have a Sprag Clutch. Which lead me to check both the VIN on the frames. I ran these on Realoem.com to find:

Fairing Bike: K100RT 84, USA, Production Date 08/1984
Frankenstein Bike:K100RT 84, USA, Production Date 11/1984

However, both titles I have in hand say that the bikes are 1985 Model year. Could this be, especially with these build dates? Does the Fairing bike build date make sense that it would have the older Roller Clutch, and NOT the Sprag Clutch like the Frankenstein?


Of course this is all assuming the motors have not been swapped out, of either bike, at any point. I do not know how to read the numbers on the motors, so I posted them up here:

Fairing Bike:



Frankenstein Bike:




We also tried the Roll Back trick, to shock the Roller/Sprag clutch..... no go on that.

Any advice is appreciated. If in fact I have to take apart the Fairing bike to gain access to the Roller Clutch, should we do the frame off approach, or the one listed above? Should we fix the Roller Clutch, or replace it with a full Sprag clutch setup?

    

11Back to top Go down    Re: Sprag Clutch issue? on Wed Mar 28, 2018 4:44 am

92KK 84WW Olaf

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3384 is 1984 model year. Fairing bike

4984 is 1985 model year. Frankenstein bike

As a matter of interest mine is 3284 and does not have the holes.

IngeK will correct me if I am wrong and I will have to buy him a beer.


__________________________________________________
1992 K100LT 0193214 Bertha Alaska Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 58,645 now 84,600 miles
1983 K100RS 0011175 Fricka 29,000 miles Damn K Pox
    

12Back to top Go down    Re: Sprag Clutch issue? on Wed Mar 28, 2018 5:19 am

KiwiK100

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Forgive me for questioning this, but the sprag clutch is accessed behind the intermediate housing and nowhere near the crank case cover. Removing the CCC to access the sprag clutch does not make any sense, but I've been wrong before, and on more than one occasion too. The image in post #10 appears to be the output shaft which runs off the crankshaft, and not the sprag gear. Power is not driven directly off the end of the crankshaft, but via the output shaft. BTW the "box-o-rocks" rattle associated more with later K1200 motors is caused by shims wearing on the output shaft and can be remedied by measuring and replacing the shims.
Does the bike run when it is bump started? My K100RS is an '87 with a sprag that would stick from time to time. Even after removing it and giving it a good clean, after a short run I had to bump start it to get going as the starter motor would spin but not engage. At a recommendation I read here somewhere, I changed to diesel oil and have never had a problem since. Fully synthetic oil is not very compatible with O-rings in these old motors, and really is just a waste of money, but I'm NOT starting an oil thread...


__________________________________________________
Current rides:
2002 K1200RS. Owned from new. Pacific Blue, Ohlins, Speiglers, Fiamms, HID. 167,000km
1991 K1. Schwartz metallic black, 18 month frame off restoration. 74,000km
1987 K100RS Style. Black, Ohlins, Race Tech springs, Braided lines. Fully restored. 53,000 miles.
The family history:
1951 AJS 500 single - my Dads ride
1953 Triumph Terrier - my Mum's ride
1916 Triumph Type H, Battle of the Somme, France WW1 - my Grand dads ride
    

13Back to top Go down    Re: Sprag Clutch issue? on Wed Mar 28, 2018 7:20 am

92KK 84WW Olaf

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The big toothed cog is on end of crankshaf to drive the counter rotating output shaft ?, but up high buried behind it is the sprag clutch and it takes time to adjust eyesight to the light to find it but it is visible there.

I spent an hour looking for non existent holes and was happy there was an issue on mine which was clarified by IngeK who confirmed my early K doesn't have the 3 holes.


__________________________________________________
1992 K100LT 0193214 Bertha Alaska Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 58,645 now 84,600 miles
1983 K100RS 0011175 Fricka 29,000 miles Damn K Pox
    

14Back to top Go down    Re: Sprag Clutch issue? on Wed Mar 28, 2018 12:50 pm

fox1486

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@92KK 84WW Olaf wrote:3384 is 1984 model year. Fairing bike

4984 is 1985 model year. Frankenstein bike

As a matter of interest mine is 3284 and does not have the holes.

IngeK will correct me if I am wrong and I will have to buy him a beer.


Thanks for the info here. So I’m assuming if the Fairing bike then indeed has the Roller Clutch assembly.

To repeat. the rollback technique of shocking the clutch did not work. With that being said, the only other trick we haven’t tried is actually bump starting the bike while pushing it forward. It’s been raining here, and not really an ideal time to try this however. It’s looking like we are going to have to pull apart the bike, to gain access to that roller clutch.

I’m wondering if it makes sense to clean that clutch off and reuse versus finding a used Auxiliary Shaft with all components (including newer designed Sprag Clutch) and replacing the roller clutch? Are the housings the same, that it would accept the newer style clutch?

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15Back to top Go down    Re: Sprag Clutch issue? on Wed Mar 28, 2018 4:38 pm

Inge K.

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@fox1486 wrote:Thanks for the info here. So I’m assuming if the Fairing bike then indeed has the Roller Clutch assembly.

The sprag clutch was in use from January -84....the mod with the three holes
should been from early -85....which now seems that this can be corrected to
very late -84.


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

16Back to top Go down    Re: Sprag Clutch issue? on Wed Mar 28, 2018 4:53 pm

fox1486

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@Inge K. wrote:Thanks for the info here. So I’m assuming if the Fairing bike then indeed has the Roller Clutch assembly.

The sprag clutch was in use from January -84....the mod with the three holes
should been from early -85....which now seems that this can be corrected to
very late -84.

Well again, two separate things here. According to the titles for both bikes, they are both 1985 models. But the production dates for both the frames and engines are 1984.

So I either the titles are incorrect, or the bikes are truely 85 models made in 84. Either way, the separate numbers on the engines for production dates tell a story that in week 33 of 84, they were still using the older roller clutch setup.

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17Back to top Go down    Re: Sprag Clutch issue? on Wed Mar 28, 2018 4:56 pm

fox1486

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I’m not finding a lot of info on the Roller Clutch. I’m searching the forums and google, but not finding or people are replacing these with Sprags (or if that is even possible).

If anyone can point me in that direction, it would be appreciated. Or any opinions on what they would do for a next step, besides pulling everything apart and replacing the roller for a Sprag.

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18Back to top Go down    Re: Sprag Clutch issue? on Wed Mar 28, 2018 5:19 pm

92KK 84WW Olaf

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Model year and registration year are not the same as manufacturers must build up sales stock. September is usually the changeover.

I have memories of buying a car many years back that was a facelift updated model. One of the major updates was suspension change due to issues with the prefacelift model. After 3 months the suspension was failing and when it went back to main dealer they discovered it was assembled with the old suspension components. They changed the lot. Clearly the old stock was being used up. So an 85 model could have been assembled/manufactured anytime after September 1984......but there is often no guarantee as specific components being the old or new ones and you only discover when you take it apart.


__________________________________________________
1992 K100LT 0193214 Bertha Alaska Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 58,645 now 84,600 miles
1983 K100RS 0011175 Fricka 29,000 miles Damn K Pox
    

19Back to top Go down    Re: Sprag Clutch issue? on Wed Mar 28, 2018 7:44 pm

KiwiK100

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Ok, I am correcting myself. Again... Clearly, if I had looked at it like they do in the northern hemisphere I would have picked it up, but I was looking at it upside down as we do down here, and yes, that is the sprag in post #10. Simply put, I should have gone into the shed and had a look at the bike and realised my folly.Embarassed


__________________________________________________
Current rides:
2002 K1200RS. Owned from new. Pacific Blue, Ohlins, Speiglers, Fiamms, HID. 167,000km
1991 K1. Schwartz metallic black, 18 month frame off restoration. 74,000km
1987 K100RS Style. Black, Ohlins, Race Tech springs, Braided lines. Fully restored. 53,000 miles.
The family history:
1951 AJS 500 single - my Dads ride
1953 Triumph Terrier - my Mum's ride
1916 Triumph Type H, Battle of the Somme, France WW1 - my Grand dads ride
    

20Back to top Go down    Re: Sprag Clutch issue? on Wed Mar 28, 2018 8:34 pm

Laitch

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@fox1486 wrote:I’m not finding a lot of info on the Roller Clutch. I'm searching the forums and google, but not finding or people are replacing these with Sprags (or if that is even possible).

If anyone can point me in that direction, it would be appreciated. Or any opinions on what they would do for a next step, besides pulling everything apart and replacing the roller for a Sprag.
It is unsure whether you even have the roller clutch. The clutch might be the sprag clutch without holes in its housing. Regardless, substitution is an appropriate question for a BMW dealer like MAX in New Hampshire, USA if you can't get affirmation here. They continue to do occasional restorations of vintage BMWs so they probably have depth of experience to answer your question.

If it were my bike I'd be making fevered attempts to bump start using any means including a modified paddock roller device as shown in post #9. If it started and ran I'd be able to try the engine flush technique to liberate the components. If you can't start it, you're bound to disassemble enough to get to the offending clutch and size things up then.


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1995 K75T 68,000 miles
    

21Back to top Go down    Re: Sprag Clutch issue? on Wed Mar 28, 2018 9:28 pm

RicK G

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At least with a K100 3 roller sprag it can be replaced with a later type that is somewhat more reliable. I have the Kawasaki Z1300 with a 3 roller sprag on the starter and that's it the end they are not to be replaced and every 20,000km they need replacing oh what joy.
It makes me realize just how much better the BMWs are in that at least upgrades are made.


__________________________________________________
"Every normal man must be tempted, at times, to spit upon his hands, hoist the black flag, and begin slitting throats." from Mencken's 1919 Prejudices

Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

22Back to top Go down    Re: Sprag Clutch issue? on Wed Mar 28, 2018 9:30 pm

fox1486

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@RicK G wrote:At least with a K100 3 roller sprag it can be replaced with a later type that is somewhat more reliable. I have the Kawasaki Z1300 with a 3 roller sprag on the starter and that's it the end they are not to be replaced and every 20,000km they need replacing oh what joy.
It makes me realize just how much better the BMWs are in that at least upgrades are made.

And that’s the answer that I’m looking for, if they can be replaced with Sprag Type.

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23Back to top Go down    Re: Sprag Clutch issue? on Wed Mar 28, 2018 9:33 pm

fox1486

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@Laitch wrote:I’m not finding a lot of info on the Roller Clutch. I'm searching the forums and google, but not finding or people are replacing these with Sprags (or if that is even possible).

If anyone can point me in that direction, it would be appreciated. Or any opinions on what they would do for a next step, besides pulling everything apart and replacing the roller for a Sprag.
It is unsure whether you even have the roller clutch. The clutch might be the sprag clutch without holes in its housing. Regardless, substitution is an appropriate question for a BMW dealer like MAX in New Hampshire, USA if you can't get affirmation here. They continue to do occasional restorations of vintage BMWs so they probably have depth of experience to answer your question.

If it were my bike I'd be making fevered attempts to bump start using any means including a modified paddock roller device as shown in post #9. If it started and ran I'd be able to try the engine flush technique to liberate the components. If you can't start it, you're bound to disassemble enough to get to the offending clutch and size things up then.


Did they make a Sprag with no holes in the housing. I would find that a little surprising, since my other motor made in 84 has holes. I think it’s a good chance it is a Roller Clutch.

The way I look at it, I still have to take apart the driveshaft to lube the splines. I’ve never been through this bike. So while I’m there, I suppose I might as well continue on with the transmission and intermediate housing. Clean/replace the roller with a Sprag. Maybe replace the rear seal while I’m there.

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24Back to top Go down    Re: Sprag Clutch issue? on Wed Mar 28, 2018 9:48 pm

RicK G

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They can be replaced with the multi sprag type but how much or which components need to be replaced I dont know.


__________________________________________________
"Every normal man must be tempted, at times, to spit upon his hands, hoist the black flag, and begin slitting throats." from Mencken's 1919 Prejudices

Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

25Back to top Go down    Re: Sprag Clutch issue? on Thu Mar 29, 2018 7:56 am

Inge K.

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@fox1486 wrote:

Did they make a Sprag with no holes in the housing. I would find that a little surprising,

Here you go, two sprag clutches w/o the three holes.

https://www.ebay.co.uk/itm/BMW-K100RT-SPRAG-CLUTCH-1984-84-/232686512369

https://www.ebay.com/itm/85-BMW-K100-K100RS-K-100-RS-STARTER-CLUTCH-GEAR-ASSEMBLY-/401362880664


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

26Back to top Go down    Re: Sprag Clutch issue? on Thu Mar 29, 2018 11:15 am

fox1486

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@Inge K. wrote:
@fox1486 wrote:

Did they make a Sprag with no holes in the housing. I would find that a little surprising,

Here you go, two sprag clutches w/o the three holes.

https://www.ebay.co.uk/itm/BMW-K100RT-SPRAG-CLUTCH-1984-84-/232686512369

https://www.ebay.com/itm/85-BMW-K100-K100RS-K-100-RS-STARTER-CLUTCH-GEAR-ASSEMBLY-/401362880664


Interesting. I assumed the first one was a roller clutch based on the fact it is out of a 1984. But the six bolts around the clutch look identical to the diagram of the Sprag Clutch above. So perhaps they did make a Sprag with no holes. Hmmmm.

    

27Back to top Go down    Re: Sprag Clutch issue? on Sat Mar 31, 2018 10:44 pm

fox1486

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Well I took the advice others have left in this post. I told myself, before tearing it all down to get to the Hole-Less Sprag, let's see if she'll pop start forwards. It just so happened to be 54 degrees out today, with lots of sunshine. So I put back in the oil, spark plugs, spark plug wires, and the battery. Took two of us to push the beast to the road. Sprayed in some Starter Fluid into the intake, and started to run. First couple attempts were a no go. But then suddenly..... a sputter. On the next attempt she started to cough. Until the third attempt where she fired up! WOOOHOO!!!

Pulled it back in the barn, and let it run for about 20 minutes. Decided to run to the auto parts store, grabbed a gallon of Shell Rotella T6 Full Syn 5W-40 Diesel Oil. Ran back, changed the oil, and let the bike run on and off for about an hour. She purrs like a kitten (which is great news, since it was a gamble that the bike ran at all). After that, starter seems to work! Hopefully that resolved the issue.

Next issue seems to be a battery or alternator issue. Noticed that when I go to restart the bike, doesn't have enough juice. I'll be tackling that next.

    

28Back to top Go down    Re: Sprag Clutch issue? on Sun Apr 01, 2018 11:03 am

Point-Seven-five

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Clean all the ground connections, Battery, transmission, and under the tank. Get the spot where they connect and all the lugs nice and shiny.

You might also want to pull the starter motor and give the brushes and commutator a cleaning.


__________________________________________________
Present:
1994 K75RT
1994 K75S
1992 K100RS

Past:
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

29Back to top Go down    Hope this helps on Sat Apr 21, 2018 4:40 pm

Postman

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This is what I did last spring:


I had problems with sprag clutch after winter. Sometimes didn't start and had to make a downhill start. I put ATF transmission oil and Delvac 50/50 in and let the engine warm up about 15min. RPM was like 3500-4000. I did many starts after that with pulling the bike back/forward gear in. Then new Delvac diesel oil 15W40 + filter.
After that prosedure no problems with a sprag clutch. I put also one bottle of Rislone and drove abot 1K with it.

Today I started my bike first time after 8 months without any problems! I'm using Delvac diesel oil an it has something what keeps sprag clutch clean. I have been told!

    

30Back to top Go down    Re: Sprag Clutch issue? on Sat Apr 21, 2018 8:41 pm

RicK G

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I haven't used the Diesel oil but others here have and have had no problems. The modern synthetic oils will keep it clean and give better lubrication and longer oil life.


__________________________________________________
"Every normal man must be tempted, at times, to spit upon his hands, hoist the black flag, and begin slitting throats." from Mencken's 1919 Prejudices

Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

31Back to top Go down    Re: Sprag Clutch issue? on Sat Apr 21, 2018 10:01 pm

duck

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Lots of riders(many makes and models) in the US use Shell Rotella T6 synth. It's made for diesel engines but I've used it a bunch in my Ks and it works fine.



Last edited by duck on Sun Apr 22, 2018 2:42 pm; edited 1 time in total


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
http://www.ClassicKBikes.com
    

32Back to top Go down    Re: Sprag Clutch issue? on Sun Apr 22, 2018 12:44 pm

Point-Seven-five

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I have a total of 50,000 miles running three bricks on Shell T6 Rotella 15W40. No sprag issues at all. I figure if a heavy duty diesel engine can run a million miles on the stuff it shouldn't hurt my brick engine.


__________________________________________________
Present:
1994 K75RT
1994 K75S
1992 K100RS

Past:
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

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