JD 5103 injection pump Dieseltech

Phil Tibbetts

Well-known Member
I have a 2004 JD 5103 I bought new. It only has 500 hours on it and the injection pump is leaking under the 1 1/8 cap/nut on the side. Is it just a simple remove the cap and nut and replace a seal? I'm trying to send pics.
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So there is nothing to pop out I take it. Is it a cap and nut under it or all one piece? Looks like it is 2 pieces. Thanks for the reply.
 
Replaced the o-ring and still leaking. Is there another o-ring under the hex nut behind the cap? Do you have a schematic with part numbers for this pump?
 

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