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#256515 - 05/31/09 3:36 pm ATF in chaincase?  
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theageofindustry Offline
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I saw in another thread that people use ATF in there chaincase and didn't want to threadjack.

I haven't heard that before, is it safe for the clutch? I guess that's my only concern. That, and what kind are you using? dextron, mercron, etc... Brand of choice? Thoughts, opinions...

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#256523 - 05/31/09 4:17 pm Re: ATF in chaincase? [Re: theageofindustry]  
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shel Online content
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ohio
The automatic transmission in your car is full of clutch packs that aren't much different than what's in your bike so atf is just fine for your clutch.
As to what to use,I don't think it really matters. If I were to do it I would use Dexron because that's what all my cars use and I already have some on hand.
What bike do you have?


When given the choice between two evils I picked the one I haven't tried before
#256524 - 05/31/09 4:18 pm Re: ATF in chaincase? [Re: theageofindustry]  
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raf940 Offline
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gastonia nc
i use ATF Ford type in my A65 with good results


1972 Triumph T120
1968 BSA A65
1968 MGB Roadster
1979 Chevrolet Camaro Berlinetta
1969 Honda Mini Trail
1939 farmall f30 tractor
2004 Honda Shadow Aero
1972 BSA Thunderbolt
1975 yamaha xs650b
1972 Norton commando project
#256535 - 05/31/09 5:14 pm Re: ATF in chaincase? [Re: raf940]  
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JTsmks Offline
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Orange Park Florida
AOI, what bike do you have? If I'm not mistaken most OIF models mixe the chaincase oil with it's engine oil so you do not want to put ATF in an OIF chaincase.


"All parts falling off this bike are of the finest British craftsmanship"
#256539 - 05/31/09 5:27 pm Re: ATF in chaincase? [Re: JTsmks]  
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theageofindustry Offline
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Mankato, MN
I have a 67 bonneville and a 68 bonneville,sorry.
Right now I am just using non-detergent 20 wt el-cheapo, but always looking for the hot tip.
My buddy has OIF, and yes, it uses engine oil.

Last edited by theageofindustry; 05/31/09 5:29 pm.
#256548 - 05/31/09 6:22 pm Re: ATF in chaincase? [Re: theageofindustry]  
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shel Online content
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ohio
I don't see any advantage to switching from what you're already using. As long as there's something in there to lube the chain you're good to go.


When given the choice between two evils I picked the one I haven't tried before
#256552 - 05/31/09 6:22 pm Re: ATF in chaincase? [Re: theageofindustry]  
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Tom D. 67 Bonny Offline
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Any ATF works just fine in my '67 Bonny with Barnett friction disks. It is also the right viscosity for the front forks with my 220 lb. weight. (Is ATF 5 or 10 wt?)
Tom


Tom D. 1967 T120R Bonneville
Anyone know of a place that sells Loctite
by the quart?
#256558 - 05/31/09 7:19 pm Re: ATF in chaincase? [Re: Tom D. 67 Bonny]  
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Graham Ham Offline
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A word of caution !

Although many folk do indeed use ATF, with, as far as I can tell, good results, you need to be sure that your bike's chaincase is a 'sealed' unit from the engine. Many models have unsealed mains, and indeed use the chaincase as part of the breathing system from the engine, and as such engine oil is blown, and indeed sucked between the two.

You don't wanna get ATF in yer engine oil !

G.


Good judgment comes from experience, but the most memorable experiences tend to come from bad judgment!


http://www.panther-publishing.co.uk/default.asp?contentID=18

#256615 - 05/31/09 10:35 pm Re: ATF in chaincase? [Re: Graham Ham]  
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RF Whatley Offline
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North Georgia, USA
You can try Mercon or any other modern ATF, but if you have any signs of clutch slipping convert to the older Type-F. As has been stated, ATF in the primary does NOT apply to any primary breather models. That's 1969 and prior years on the 650.

The advantage is less clutch sticking, less first gear grinding, and longer primary chain life.

bigt


Don't hide 'em, Ride 'em !!

RF Whatley
Cornelia, GA

"Shop Boy" at Rodi British Bikes
#257083 - 06/03/09 12:32 pm Re: ATF in chaincase? [Re: RF Whatley]  
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norton bob Offline
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ATF also helps you identify leaks (red) hypoy (green)gearbox and brown engine. some ATF,s can attack paint so fix the leak!

#279548 - 10/17/09 10:49 pm Re: ATF in chaincase? [Re: norton bob]  
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My triumph workshop manual says capacity is 350cc for 69, 650 model or quote: "Alternatively, the correct level can be achieved using a measure of 350cc".
This isn't right, oil will pour out of the oil level plug at 150cc, another aftermarket manual a friend has says 150cc for 650 and 350cc for 750 machines, there must be a larger area in there to accomodate the triplex??
I've always used the plug and never measured out 350cc and dumped it in there but this time I did and got a big surprise on the floor! I wonder how many people dump 350cc without removing the oil level plug because that's what the TRIUMPH manual says to do?

#279994 - 10/20/09 10:08 pm Re: ATF in chaincase? [Re: ]  
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yellow_cad Offline
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Folsom, CA
So, just to reiterate, it is OK to run ATF in an early 1970 Bonneville, correct?


Jim

1970 Triumph Bonneville
1973 Commando Interstate
1971 OSSA MAR
#280026 - 10/20/09 10:42 pm Re: ATF in chaincase? [Re: yellow_cad]  
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Jack Adams Offline
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yellow cad, NO. Jack

#280046 - 10/21/09 3:35 am Re: ATF in chaincase? [Re: yellow_cad]  
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Originally Posted By: yellow_cad
So, just to reiterate, it is OK to run ATF in an early 1970 Bonneville, correct?


That would depend, perhaps. How early exactly? Early in the model year or early in the calendar year? The engine number should be the definitive answer.....

Steve


'77 T140J
"Vintage Bike". What's in your garage?

"The paying customer is always right."

Fitting round pegs into square holes since 1961...
#280214 - 10/22/09 2:28 am Re: ATF in chaincase? [Re: JubeePrince]  
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yellow_cad Offline
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My engine number is AD37669. Please let me know what that says regarding the breather and what I can use in the chaincase. Thanks.


Jim

1970 Triumph Bonneville
1973 Commando Interstate
1971 OSSA MAR
#280215 - 10/22/09 3:10 am Re: ATF in chaincase? [Re: yellow_cad]  
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Bud Provin Offline
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Unless your engine has been modified it does not have a seal at the crankshaft and you should not use ATF.

ATF is an excellent solvent and if mixed withe oil would probably break loose all the sludge in the motor-including that in the crank's sludge trap.

#280296 - 10/22/09 4:48 pm Re: ATF in chaincase? [Re: ]  
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RF Whatley Offline
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North Georgia, USA
Originally Posted By: Kirstykimberlee
My triumph workshop manual says capacity is 350cc for 69, 650 model or quote: "Alternatively, the correct level can be achieved using a measure of 350cc".
This isn't right, oil will pour out of the oil level plug at 150cc, another aftermarket manual a friend has says 150cc for 650 and 350cc for 750 machines, there must be a larger area in there to accommodate the triplex??

I've always used the plug and never measured out 350cc and dumped it in there but this time I did and got a big surprise on the floor! I wonder how many people dump 350cc without removing the oil level plug because that's what the TRIUMPH manual says to do?


The correct way to tell the primary oil level for ANY primary case is that the bottom run of the primary chain should just skim the surface of the primary oil. You can check this with a strong lamp. In this way the chain picks up the oil and makes an oil mist that lubes everything in the case. Guys with primary strobe windows can testify as to the presence of the oil fog.

The oil level screws run into the cover will strip out on you if you're not really, really careful.

bigt


Don't hide 'em, Ride 'em !!

RF Whatley
Cornelia, GA

"Shop Boy" at Rodi British Bikes
#280412 - 10/23/09 5:36 am Re: ATF in chaincase? [Re: RF Whatley]  
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Why thank you Richard, all the way from Georgia!
Little discrepancies or misunderstandings in the manual can be cleared up easily with the help of a good forum.
KK

#381849 - 07/01/11 12:02 pm Re: ATF in chaincase? [Re: theageofindustry]  
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npw Offline
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orange county ny
How does one check the oil level in the chain and gear cases?

#381850 - 07/01/11 12:08 pm Re: ATF in chaincase? [Re: theageofindustry]  
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npw Offline
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orange county ny
What about the level in the gearcase? How do you tell the level is correct and what oil is used?

#381987 - 07/02/11 5:22 am Re: ATF in chaincase? [Re: npw]  
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Bob G Offline
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redondo beach, ca
Set your bike level. Find your gear box drain plug. There is a smaller bolt head located in the center of the drain plug.Remove this small bolt.
Fill your transmission until you see a little oil come out that hole. Wait until it stops until you put the plug back in.

Just about any cheapo auto differential oil in the 90w range works. There is some controversy regarding synthetics.


Bob Gregor
#382013 - 07/02/11 10:06 am Re: ATF in chaincase? [Re: ]  
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L.A.B. Online content
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Norfolk, UK
Originally Posted By: britbike forum member?
another aftermarket manual a friend has says 150cc for 650 and 350cc for 750 machines, there must be a larger area in there to accomodate the triplex??


150cc is the correct "Initial fill" amount for all '70-on 650/750 twins as far as I'm aware?

The General data sections of both the '72 650 OIF and '73-'78 T140 factory manuals gives the primary chaincase capacity (initial fill only) as "5/8 pint - 350cc" which I believe is an error carried over from the earlier pre-OIF manuals for sealed chaincase models?
In the "Lubrication" section (Sec. A) of both manuals, the primary initial refill amount is given as "1/4 pint" (1/4 Imperial pint = approximately 150cc).
The 350cc error was apparently corrected in the later '79-on factory manual-as the initial fill amount is listed in the Capacities section as "150cc".

(300-350cc is the correct primary refill amount for BSA/Triumph triples)

Last edited by L.A.B.; 07/02/11 10:27 am.
#382022 - 07/02/11 12:38 pm Re: ATF in chaincase? [Re: yellow_cad]  
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dave jones Offline
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Emsworth, sunny south of Engla...
Yellow Cad- A simple way to tell if your bike has the later breathing system is whether it has a large diameter breather pipe coming from the rear of the chaincase above the gearbox. If it is there then you can't use ATF.

Bikes that can use atf have the breather pipe coming from under the engine.

What I found on my 1967 bike is that if I empty the chaincase ready for an oil change not all the oil comes out. If I measure a new lot out and add it I end up with too much oil in the case which makes my clutch slip a little. I, therefore, use the level plug with the bike on its wheels and held vertical.

I have found that if my clutch is set up correctly it works equally well with 15W50 or thin oil although I haven't tried atf which is very thin. It is only about 5W(?)

Dave

Last edited by dave jones; 07/02/11 12:44 pm.
#498452 - 07/21/13 2:18 am Re: ATF in chaincase? [Re: theageofindustry]  
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Adrian1 Offline
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Australia
My bike has an engine breather coming from just below the rear of the cylinder barrels. Also has a breather pipe coming from midway in the chaincase. Motor is 6T circa 1962. Am I ok for ATF?

#498453 - 07/21/13 2:21 am Re: ATF in chaincase? [Re: Adrian1]  
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Jon W. Whitley Online content
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I am going to say yes.


Originally Posted By: Adrian1
My bike has an engine breather coming from just below the rear of the cylinder barrels. Also has a breather pipe coming from midway in the chaincase. Motor is 6T circa 1962. Am I ok for ATF?


Jon W.


1957 6T Thunderbird 650
1971 TR6R Tiger 650
1955 Tiger 100 - Project
1970 BSA A65F 650 - Project


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