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Classic Bike Trackdays

Ar125 oil pumps

 
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SmokerMatt



Joined: 06 Jan 2019
Posts: 21
Location: Surrey UK

PostPosted: Wed Feb 06, 2019 1:19 am    Post subject: Ar125 oil pumps Reply with quote

Can anyone tell me the differences between the oil pump on the ar125A and ar125B, i presume the ar125A oil pump would pull more oil through than the B version, it's the parts i'm interested in, are any of the parts the same ?


Any advice would be appreciated
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Howie



Joined: 18 Oct 2009
Posts: 492
Location: Kwaksville

PostPosted: Wed Feb 06, 2019 7:24 pm    Post subject: Reply with quote

Hi Matt,

Part numbers are different so I would say you're right on the oil delivery.

If you look on cmsnl they have the diagrams you're looking for.

A model is 49042-1053
B model is 49042-1051

Hope this helps
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SmokerMatt



Joined: 06 Jan 2019
Posts: 21
Location: Surrey UK

PostPosted: Thu Feb 07, 2019 9:25 am    Post subject: Reply with quote

Cheers Howie, I did have a look at CMS but it dose not show the difference in the actual internals of the pump, I think I'll have to get hold of a B version pump and strip it to see the difference.

Cheers for your help
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Top-shaggy
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Joined: 05 Mar 2011
Posts: 1692
Location: Derbyshire

PostPosted: Sun Feb 10, 2019 1:41 am    Post subject: Reply with quote

I think you will find that the pmps are the same.

The difference is the size/shape of the butterfly cable holder. It's the same on the 50/80 pumps.

The number stamped on the butterfly valve is the one to check, not the one on the valve body.
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SmokerMatt



Joined: 06 Jan 2019
Posts: 21
Location: Surrey UK

PostPosted: Sun Feb 10, 2019 4:21 pm    Post subject: Reply with quote

Hi Top-shaggy


Cheers for information, any chance you a picture of what the butterfly holder looks like ?
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Top-shaggy
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Joined: 05 Mar 2011
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Location: Derbyshire

PostPosted: Tue Feb 12, 2019 4:15 pm    Post subject: Reply with quote

I'm working away at the min and fell out with photobucket.

The butterfly valve is easy to spot as it's the arched pressed steel galvanised arm that holds the cable. Look at it closely and you will see numbers stamped. I can check mine when I'm home to identify what you have but not back until Friday
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SmokerMatt



Joined: 06 Jan 2019
Posts: 21
Location: Surrey UK

PostPosted: Fri Feb 15, 2019 5:32 am    Post subject: Reply with quote

Cheers for the description Top-shaggy

I'm going to pull my bike out the shed tomorrow and have a look
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SmokerMatt



Joined: 06 Jan 2019
Posts: 21
Location: Surrey UK

PostPosted: Sun Feb 24, 2019 1:10 pm    Post subject: Reply with quote

Ok so finally pulled the bike out and found the number stamped on the oil pump butterfly valve 1069
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Top-shaggy
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Joined: 05 Mar 2011
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Location: Derbyshire

PostPosted: Tue Feb 26, 2019 11:03 pm    Post subject: Reply with quote

SmokerMatt wrote:
Ok so finally pulled the bike out and found the number stamped on the oil pump butterfly valve 1069


Good news is the pump you have is A model (AR125 A4-ACool

B model later pump is 16082-1070
A model later pump is 16082-1069

The last four digits of the part number are stamped on the pulley Wink
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SmokerMatt



Joined: 06 Jan 2019
Posts: 21
Location: Surrey UK

PostPosted: Wed Feb 27, 2019 11:41 am    Post subject: Reply with quote

Great cheers for confirming that !

Now I'm a bit worried as I've spent on spare parts with CMS
As I was told my bike was A6 1988 hopefully all the spares are compatible with the A4 1986
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SmokerMatt



Joined: 06 Jan 2019
Posts: 21
Location: Surrey UK

PostPosted: Wed Feb 27, 2019 3:21 pm    Post subject: Reply with quote

Just checked and all the parts are compatible, if fact I can't find any difference between the later ar's at all.
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Top-shaggy
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Joined: 05 Mar 2011
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PostPosted: Fri Mar 01, 2019 11:21 pm    Post subject: Reply with quote

SmokerMatt wrote:
Just checked and all the parts are compatible, if fact I can't find any difference between the later ar's at all.


My post was changed by the auto emoji... it should say A4-A8

The A model oil pumps are all the same for later A models. The B models are different.

The early models had different pumps for example A1A had 2 different oil pumps
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