Onan 7.5 Quiet Diesel Generator Problem

[FIRE UP]

Originally Posted by rlgosse

So the 7.5 is all back together and remounted in the 05 Expedition.
Replaced the temp sensor, belt, thermostat, rad cap flushed and refilled with Fleetguard 50/50. Cost about $250 Canadian.

Many many thanks to all for the helpful posts eapecially to Fireup for the great pictures and Tripical36. The heat and Freeze up trick was especially appreciated.
Could probable do it in 1/4 of the time now. Wouldn't take a lot of thought to out do a bunch of that engineering.

Happy Motoring
Bob

Hey Bob,
Glad I could be of assistance. We're all here to help.
Scott

[RCLImperial]

Guess I was lucky, but when I got a code 33 on my 7.5 diesel in my '04 HR imperial, I went after it. My gen set is on a slide and when I unscrewed the t-switch , only the top half came out. The lower part was stuck in the bore. I looked at everything and concluded that it would be a major job to take out the housing holding the t-switch , so I first drilled out the center of the part of the t-stat that came out and tapped the hole it fit a quarter inch bolt. Then, I stuffed a rag into the cooling passage below where the remains still stuck would fall into the coolant passage. I then screwed the tapped piece back into the housing and used that bolt to force the t-switch remains to drop onto the rag where I could pull it out. After re-assembly, all has been fine for several years.

Dick L '04 HR Imperial