Leaking Injector Pump - GQ TD42

[AB]

Hi All,

I have had a leak in my injector pump for a month or so now. It hasn't leaked much but It's just starting to get worse now and It's time to fix.

I thought the leak was on the side but after degreasing and drying off I have come to the conclusion It's leaking from all around the top so assuming my O-Ring seal on the top cover needs replacing.

Just a quick one, has anyone done this and can give some advice?

I assume I can replace the O-Ring without taken the pump off.

Or am I just better off taking to a diesel shop and paying them to replace it. I wouldn't imagine it being over $200...Having saying that I would prefer to keep the $200 in my skyrocket...lol

Below are some photos of the leak. I originally thought it was on the side as in one of the pics taken underneath looking up at the side but after cleaning it all I did notice it leaking at the top on the other side of pump as well which indicates the entire top seal is gone.

Any other advice appreciated!!!

I understand that this only a band aid fix and after replacing the gasket may open up more leaks in other areas but a new pump is not a cheap purchase...lol