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When you reassemble the pump, how do you ensure the locking collar is in the correct position to limit the piston control arm correctly?

Thanks for the responses. The piston is so tight in the cylinder that the spring is not strong enough to pull it down. It's basically stuck in the up position. I will try cleaning all parts then polishing the piston until it moves. It appears to be in good condition. I wonder if this pump...

I bought 240v water heater elements from eBay for about $10 each. Got 1.5k, 2.0k, 3.5k, and 4.5k elements. I mounted them on a board and put it on top of a barrel full of water. I have each wired to a breaker in a 12 slot breaker box. Works great.

I have a 1999 MEP-803a with 2300 hrs. One of the injection pumps (#4 cylinder, furthest from the engine fan) is sticking. The piston in the pump if very difficult to move up and down or rotate. The spring is not strong enough to pull the piston down to the bottom of the stroke. I've taken it...

Speddmon, I installed the IP per the TM as you suggested. Twice. I even tried another IP from a unit the runs great (holds 6kw like it was nothing). Both were closing at about the same spot. I guess the only way the unit could be out of whack is if the cam shaft is off by a tooth with the...

Gents, I have a MEP-002a that I checked the timing on using the PC method. The port doesn't close until the PC mark is out of view (I'd say about 8 dashed lines from the PC mark). Is it possible for the IP to be so far out of whack? I just rebuilt the IP and it looks like is in good...

Looking for engine identification also Is the Onan engine in the MEP-002a the DJB, DJBA, or DJE? Thanks!