Skip to main content ↑ ↓
Topic: Genset surge (Read 1846 times) previous topic - next topic

Re: Genset surge

Reply #25 –
Phred,the -1/2 WC I'm preety sure is with engine running,try setting it at 5" wc not running,you can get a guage setup at a propane dealer instead of manometer,see if that helps.
96 U270 BUILD 4810
85 380SL
Drummonds TN.

Re: Genset surge

Reply #26 –
You really need a multi meter with a frequency function to set the govern'd speed.  Do you have a manual?

1992 Foretravel Grand Villa
U225 SBID Build No. 4134
1986 Rockwood Driftwood
1968 S.I.A.T.A. Spring
1962 Studebaker Lark
1986 Honda VF700C
1983 Honda VF750C
Charlie, the Dog was broken out of jail 24 Oct 2023
N1RPN
AA1OH (H)e who must be obeyed.

Re: Genset surge

Reply #27 –
Here is the service manual for your generator.  Hope it helps.
John M
https://www.google.com/url?sa=t&source=web&rct=j&url=http://campkahler.com/files/onan/NHE-A-C-Service.pdf&ved=2ahUKEwi0jPGnmpziAhUrnq0KHc1uAGEQFjAAegQIARAB&usg=AOvVaw2FsK1EZuYcOTzjhJ64og4J
John & Carm Morales

"We travel not to go anywhere, but to just go.  We travel for travel's sake.  Our great desire is to move."

Re: Genset surge

Reply #28 –
Quote from: Old Toolmaker –
You really need a multi meter with a frequency function to set the govern'd speed.  Do you have a manual?


I think my multi does indeed have hz function, don't think I have ever used it. Probably Lost the tiny instruction booklet 15 years ago.
Old Phart Phred, EIEIO
89 GV ored 36' #3405 300 hp cat 3208 ATAAC side radiator, mountain tamer exhaust brake

Re: Genset surge

Reply #29 –
I have 3 manuals and the owners manual was fairly in-depth. Thanks John for the link to dealer service manual, it way more in-depth. Sensitivity adjustment was not shown in my manuals. Genset has about 420 hours on it. Armed with this info I should be able to dial it in. Funny thing is this CA coach had a 1998 receipt for some work performed by a Cummins shop three miles from my house in Kansas.
Old Phart Phred, EIEIO
89 GV ored 36' #3405 300 hp cat 3208 ATAAC side radiator, mountain tamer exhaust brake

Re: Genset surge

Reply #30 –
Quote from: Old phart phred –
I have 3 manuals and the owners manual was fairly in-depth. Thanks John for the link to dealer service manual, it way more in-depth. Sensitivity adjustment was not shown in my manuals. Genset has about 420 hours on it. Armed with this info I should be able to dial it in. Funny thing is this CA coach had a 1998 receipt for some work performed by a Cummins shop three miles from my house in Kansas.
In a tiny paragraph, in that voluminous manual will be setting instructions for the throttle isle stop, 42 Hz and 62 Hz for the governor when the generator is fully warmed up and un loaded.  Working from my somewhat spotty memory, the propane pressure is 9-11 inches water column, and you'll find complete instructions for checking out the propane regulators.

My new to me Foretravel has the liquid propane Onan, something I wanted to have anyway.  Fired up the Onan in the old rig and the starter stuck engaged.  Again.
1992 Foretravel Grand Villa
U225 SBID Build No. 4134
1986 Rockwood Driftwood
1968 S.I.A.T.A. Spring
1962 Studebaker Lark
1986 Honda VF700C
1983 Honda VF750C
Charlie, the Dog was broken out of jail 24 Oct 2023
N1RPN
AA1OH (H)e who must be obeyed.
 

Re: Genset surge

Reply #31 –
Not sure a liquid LP is that good an idea, since the on-generator regulator is laying horizontal so that long hydrocarbon chain contaminants accumulate instead of "passing through".  Eventually, this can clog the regulator with a light viscosity grease-like substance.

Many of us have "converted" to high pressure vapor.  Very simple and low cost, but eliminates the contaminants.  Got the idea from an engineer at Marshall Gas (maker of many of the RV regulators).

Just "T" in to the vapor side between POL and house regulator.  I installed a ball valve so I could close off gas to the generator line.  Then just move the generator line to the new connection and install a cap on the liquid port.

Mike Leary (who has our coach) may have pictures.

BTW, overhauling the regulator is pretty simple, but it is important to use the high-temp (silicone) gasket kit since the regulator is located inside the generator shroud.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020