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  #1  
Old 22-06-20, 21:35
arie teomim arie teomim is offline
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Default lubrication question

HI ALL
Those lubrication nipples, what did they used for, grease or oil??
arie
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  #2  
Old 22-06-20, 22:12
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charlie fitton charlie fitton is offline
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usually grease
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  #3  
Old 22-06-20, 22:51
Lynn Eades Lynn Eades is offline
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I guess Arie is wondering about the coupling?
According to the Canadian lube chart, grease everywhere......except for the gearbox coupling which took C600 gear oil what ever that is these days. I guess this was after the seals were introduced to diff and gearbox ends? I dont know.
As far as I know, we (New Zealand) only received the earlier carriers without the two seal modifications. Maybe the coupling was only greased on assembly?
How that grease nipple was ever supposed to get any lube to the coupling or speedo drive, I have no idea. I guess if the carrier was hung by its two front tow eyes the gearbox oil would get there. Great design!
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  #4  
Old 22-06-20, 23:01
David Herbert David Herbert is offline
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Lynn,
C600 is a British army specification for a very high viscosity and 'sticky' oil used in some gearboxes which have yellow metal components. The most common application is the Merrit Brown gearbox in Centurion tanks. It is actually very similar to cylinder lubricating oil used in large steam engines.

David
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  #5  
Old 23-06-20, 01:14
Lynn Eades Lynn Eades is offline
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Thanks David. Did it later become OC 600?
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Carrier Armoured O.P. No1 Mk3 W. T84991
Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6.
Dodge WC55. 37mm Gun Motor Carriage M6
Jeep Mb #135668
So many questions....
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  #6  
Old 23-06-20, 02:15
David Herbert David Herbert is offline
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I'm not sure, I suspect that OC600 is the correct term. I think it stands for Oil Compound but the numbers used in British army oil descriptions don't seem to directly relate to anything. Then there is OM13 which is hydraulic oil. The numbers do seem to get bigger with viscosity. OC600 doesn't so much pour as level out.

David

Last edited by David Herbert; 24-06-20 at 22:55. Reason: Removed the reference to OM220 which I seem to have invented myself ! Sorry Mike C ! !
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  #7  
Old 23-06-20, 05:02
Mike Cecil Mike Cecil is offline
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Default Oc600

OC600 is Lubricating oil, compounded, consisting of 94% mineral oil and 6% rapeseed oil (I think its now called Canola oil). Viscosity range 29 to 32.

OM220 - don't have a listing for that.

The 'C' series oils and compounds are corrosion preventatives that apply a coating to components, either hard or liquid, depending upon the spec. number.

Mike
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  #8  
Old 23-06-20, 05:45
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Quote:
Originally Posted by Lynn Eades View Post
According to the Canadian lube chart, grease everywhere......except for the gearbox coupling which took C600 gear oil !
Quote:
Originally Posted by David Herbert
Lynn,
C600 is a British army specification for a very high viscosity and 'sticky' oil used in some gearboxes which have yellow metal components.
Is the British "C600" a post-war spec, or wartime?

If the Canadian chart specifies North American oils/greases (SAE), then there is a possibility that it could be referring to 600W gear oil, also a high viscosity and sticky oil that was in common use during the 20's and 30's as diff oil for the Model T and A Ford cars and trucks. Many other heavy US (and therefore, probably Canadian, trucks of the era used it for diff oil).

https://www.macsautoparts.com/ford_m...rt-bottle.html
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  #9  
Old 23-06-20, 07:15
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Richard Farrant who worked in army workshops for many years, tells us that the modern equivalent of C600 is SAE 140 gear oil. (note NOT EP140) . Ron
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  #10  
Old 23-06-20, 08:15
Lynn Eades Lynn Eades is offline
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Thank you all. Mike, you comments made me think of something. I pulled the lid on a Dodge 4 speed that had been sitting for years. (war time oil?) It had a skin over everything inside (except the contacting areas) the box was in very good condition. I have seen gear boxes opened with later oil in them and the oil had drained away on top and all above the oil line was rusty. I wonder if this box had this type of oil?
The coating was like a plastic skin that we used to find on some new gears back in the 70s. as I recall the gears were blackish but the oil looked nice and clean (given time to settle it always does)
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Carrier Armoured O.P. No1 Mk3 W. T84991
Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6.
Dodge WC55. 37mm Gun Motor Carriage M6
Jeep Mb #135668
So many questions....

Last edited by Lynn Eades; 23-06-20 at 08:20.
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  #11  
Old 23-06-20, 08:36
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Lots of discussions on US + UK vehicles forums and vintage machinery forums (https://www.google.com.au/search?sou...sclient=psy-ab) list the history of this oil and possible modern equivalents.

Suggestions include 140W Gear Oil, 250W Gear Oil or 680 Steam Oil.

Some even consider that the "W" does not refer to Weight or Winter as per modern parlance, but that the original oil was Mineral Oil compounded with Whale Oil! Try finding that today.
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  #12  
Old 23-06-20, 09:38
Lynn Eades Lynn Eades is offline
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Well, there's only one thing to say to that, but I won't
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Carrier Armoured O.P. No1 Mk3 W. T84991
Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6.
Dodge WC55. 37mm Gun Motor Carriage M6
Jeep Mb #135668
So many questions....
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