Another fuel pump question

[massey]

I won two MEP-002a's at Fort Meade a few weeks ago and have been working on them a little. The first one I got running has very bad blow-by and the other one wouldn't run due to a stuck injection pump.

I pulled the stuck pump apart and found this:

Lots of shrapnel, and did not have that plunger guide or the gear retainer as shown in the parts breakdown. Looks like I'll need at least a plunger, sleeve, tappet, delivery valve spacer, etc.

I pulled the pump from the engine with the blow-by and found both of these pumps have the same #1 stamped on their buttons.

Since these both have the same buttons, can I interchange these pumps with no issues?

Thanks for your time

Ed

 

[storeman]

Ed,
I would say yes, you can exchange parts. If there are shims beneath the pumps, keep them with the block, not the pumps.. The torn down pump you saw on my bench when you were here looked similar in terms of damage. Let me know if I can help.
Jerry

 

[massey]

Thanks Jerry. I was thinking of just swapping the entire pump for now just to see if the this unit runs. Depending of the carnage I find in the one with the blow-by, I'm sure I'll be needing a few things for it.

Ed

 

[massey]

OK, I swapped the pump and she fired right up. I have it running with about 30% indicated load, I figure I'll let it run a while and then check compression and leak-down numbers.

Ed

 

[gimpyrobb]

Glad to hear you got one of them running. That pump you posted pics of is wasted! Wow.

 

[storeman]

Way to go ED!

 

[massey]

Thanks, I'm glad it cooperated. I'm going to have to re-do my checks and confirm the internal condition of this engine tomorrow.

 

[Jimc]

Just looked at the pic if the broken pump. Thats the first one i have seen of the other type. The plunger is tapered on the end that is broken. That pump actually matches whats in the manual. Mine is different

 

[storeman]

I have both types on my bench at present. One looks just like Ed's with the same damage.
Jerry