I have a friend with an '81 300SD, I've made a few posts about it in the past, I do maintenance on it for him, shocks, brakes, filters, thermostat, etc. From the day he got it it leaked a little bit of oil where the injection pump meets the block. But now it is leaking a considerable amount of oil.

It seems to be coming out where the block meets the pump and out of the bottom plate of the pump.

He would like to pull the pump and replace the seals in it.

Is there a good DIY article on pulling the pump? I could not find one googling around.

I have pulled pumps on 60X motors, but those have the luxury of the pump lock I own, the 61X appears to not have a pump lock. So I'd like to learn about what I'm getting into in terms of timing before I pull this thing apart.

Also, I am looking for a list of the external seals on a 61X, gsxr had such a list for the 60X when I resealed my 87s pump.

I figured we would do delivery valve seals while we are in there.

Thanks, I tried to find as much information as I could online, but there is SO much 617 talk you wind up find a lot of unrelated information. I did find someone who scanned a FSM article which is helpful in terms of removal but is vague on timing.

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