Anybody have any advice on 100kW TQG (MEP-807A) generator faults?

2017-09-06T02:19:11-04:00

I currently have 2 100kW generators that are giving myself and CECOM a run for our money. Thought I'd ask here, I imagine there's a lot of knowledge here.

Response by SSG Private RallyPoint Member made Sep 6 at 2017 2:19 AM

2017-09-06T02:19:25-04:00

1) Cranks but won't start. Followed fuel lines to ensure there's no air. Tested fuel pump and it's pumping. Connected CAT ET and injectors are working properly. Thinking either timing sensors or IAPCV (Injection Actuator Pump Control Valve)

Response by SSG Private RallyPoint Member made Sep 6 at 2017 2:22 AM

2017-09-06T02:22:01-04:00

2) Generator starts and will run. Occasionally (no pattern found yet) the voltage and frequency will start to fluctuate. Checked program on DVR and it checks out but when the voltage and frequency fluctuate certain programs are self adjusting. Replaced DVR but didn't change the problem. Have ran it on a load for quite sometime (roughly 70kW) but it'll just shut down randomly when this happens.

Response by MSgt Private RallyPoint Member made Sep 6 at 2017 6:00 AM

2017-09-06T06:00:33-04:00

I was USAF Power Production, we had mostly older MEP's but a few 807A's. 90% of the problems we had were fuel related, especially when related to hunting, surging or failure to start and run. The first check was always draining the water separators and slumdougy from the bottom of the tank. If it just got serviced and had filters replaced, bleed air from filters and fuel lines. Start simple and go from there.

Response by SCPO Private RallyPoint Member made Sep 6 at 2017 11:44 AM

2017-09-06T11:44:50-04:00

ME? I would do a 317 Kilo with a 45FBI, if it's DOA. Then wire a B-17 to the frazzle phlange, and switch to AAA batteries. Crieky, what was the question, again???????

Response by CW2 Stephen Pate made Sep 7 at 2017 3:23 AM

2017-09-07T03:23:59-04:00

For the first fault, make sure your E-Stop button isn't pushed in. If that doesn't work, try bypassing it. I've seen a lot of those fail and cause this fault. Are these HAMMPS? If so, like others stated, not enough or too much of any of the fluids will shut it down too.

Response by SSG Private RallyPoint Member made Sep 7 at 2017 3:57 AM

2017-09-07T03:57:17-04:00

Figured out the problem for the first generator. It is a faulty IAPCV. Thank you to everyone who helped. Now time to work on Generator #2.

Response by PFC Hennessey Thomas made Oct 21 at 2017 5:33 PM

2017-10-21T17:33:15-04:00

U just gotta be good at trouble shooting