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oil pump replacement D1NL6600A retro fit on 641


 
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rstokes2
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Joined: 31 Aug 2012
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PostPosted: Thu Oct 25, 2012 7:38 am    Post subject: oil pump replacement D1NL6600A retro fit on 641 Reply to specific post Reply with quote

i have this pump on my 1960 641 info shows this to be 100 psi pump oil pressure should be @45-50 down the line this pump was installed.dont want to change any oil lines or oil gauge will this hurt motor old pump is shot. doing motor rebuild.
 
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souNdguy
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Joined: 20 Aug 2002
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PostPosted: Thu Oct 25, 2012 9:59 am    Post subject: Re: oil pump replacement D1NL6600A retro fit on 641 Reply to specific post Reply with quote

according to the parts listing.. the rotor pump was 61-64 and:

D1NL6600A HYDRAULIC PUMP Pump Assy., Oil, L/Screen & Cover, This part is a direct replacement for C3NN6621B, When Replacing C3NN6621A, Also Use (1) D1NL6622A Cover & Inlet Tube and (1) B9NN6730A Plug, When replacing Gear Type Pump W/

pretty standard...
 
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Scott PA
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PostPosted: Thu Oct 25, 2012 4:15 pm    Post subject: Re: oil pump replacement D1NL6600A retro fit on 641 Reply to specific post Reply with quote

You also change the industrial engine relief valve spring that comes with the pump with the farm tractor spring for the correct pressure, sometimes the spring retainer cap gets damaged changing the spring so you may want a new one, both the pickup tube w/ screen and the outlet tube need replaced and remove the screen from you old drain plug instead of buying a new plug, while it is apart change the hex pump drive shaft.
 
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