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 > Your search for posts made by 'bounder39zman' found 26 matches.

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RE: elec test help on Onan gen

have seen this problem numerous times, most often on Onan 4KY (Microlite/Microquiet) . Usually caused by battery voltage dropping under load of starter motor, due to high resistance in cable connections, or weak capacity of battery . what is causing starter to "engage-disengage" is starter relay contacts closing, then dropping out (opening) due to low voltage. corrosion in cable terminals where terminal/lug connects to cable can be an "unseen" problem
bounder39zman 06/08/19 10:06pm Tech Issues
RE: @#$%^& onan starter

hopefully you get correct part with that part number. that is old, superceded number. current Onan part number is 191-2416. Good luck with that repair. The older Onan Marquis series generators were great units, imho.
bounder39zman 05/28/19 07:54am Tech Issues
RE: RVs and the NEC

Authority having jurisdiction, i.e. City, county, state etc
bounder39zman 05/22/19 12:38pm Tech Issues
RE: $3150 to service Onan 7k and replace ignition coils!

OK..fault code 47 is an ignition fault code. the control board is not "seeing" one or the other ignition coils. could be as simple as a unplugged wire, or a bad coil. I have had shop towels or paper towels get sucked up into the air intake, and dislodge wire off coil. So looks like you probably have bad coil, disconnected wire to coil, or possibly bad control board.. And , from experience, dont lay shop towels or paper towels near air intake....
bounder39zman 05/11/19 12:10pm Tech Issues
RE: $3150 to service Onan 7k and replace ignition coils!

Part you called fan shroud, I referred to as flywheel cover. either term ok. Might give Careco Gen Serv, in Fort Mill, SC, only 1-1/2 to 2 hrs from you a call. I need to look up code 47, don't remember specifics of that code,
bounder39zman 05/10/19 07:31pm Tech Issues
RE: $3150 to service Onan 7k and replace ignition coils!

couple of things: the 4BGE Maillemaker refers to is a great generator, I have owned several, and still have one mounted on a cart for a "portable" genset. But it has nothing in common with your RVQG (7HGJAB I assume). Your set has 2 magneto/coils, one for each cylinder,a triggered by magnets on flywheel. to access them you have to remove genset from coach, lift engine-gen assembly off of base tray, turn on back to expose bottom of set. Then remove flywheel-belt cover to access magneto/coils. There is no ignition module, per se... the magnetos are controlled by main control module. $50 is ok price for coils, the main control board is $400+, depending on spec of genset. The hydraulic lift table is a very useful item, and you need some lifting equipment or couple strong friends to pick up the engine/gen assembly up from the base tray. I would like to know the fault code the gen is giving you when it shuts off. I have surveyed a number of Cummins/Onan dealers in SE US, they typically have labor rate of $150-160 hr R&R of set from Tiffin should require 2-3 hrs at most, replacing coils, and drive belt while "in there" and bench test run about 3-4 hrs in a well equipped shop that has experience working on these sets
bounder39zman 05/02/19 07:17pm Tech Issues
Cummins ISC filter info

Hi all. Wanting to service a friends Cummins ISC in a 03 Revolution. Does anyone have filter numbers, and does this unit have a fuel filter other than the ff/ws behind the rear grill? Fleetguard numbers preferred, but I can cross reference any major brand number. Thanks in advance for help
bounder39zman 04/03/19 09:02am Tech Issues
RE: New Onan 4000 wont start

Onan standard warranty on consumer products is 2 years or 2000 hrs, plus an additional third year on major components. fault code 36 is displayed when gen slows down or stops without a command from control board or stop switch (usually fuel related) code 15 is low frequency/speed. Sounds like you have carb problems, will need cleaned or replaced. Of course, Cummins-Onan does not consider a gummed up/varnished carb to be a warrantable issue
bounder39zman 03/20/19 05:47pm Class C Motorhomes
RE: 7500 Onan

Had one of these in a Bounder, no slide tray. at around 5000 hrs I pulled it (dropped it out the bottom!) The only modification I made was to cut out a hole, 12x12 or so in rear panel, then got a piece of diamond plate aluminum to cover the hole, installed with nut-serts, so I could change belt if necessary in the future, without dropping entire set. Of course I did full P.M. maintenance while out, including belt, hoses, coolant sensor, water pump and thermostat, valve adj., etc, etc. The commercial units do have a service door, but I doubt that it would help with the gen stuffed up in the RV . They can be very useful if gen slides out, gives good access to fuel filter and oil filter. The commercial units are identical to RV units, with the exception of having a 12v battery charging system installed. I do work on these gennys for a living, and usually will always change the belt and water temp sensor, every time I have a unit out of the coach for whatever reason.
bounder39zman 03/08/19 03:45pm Class A Motorhomes
RE: Onan 5500 flooding

good job on that repair. This is a common problem with these carbs. As it is an "emissions" part, Onan does not offer any repair parts except the choke heater and vacuum valve (choke pull-off). Fortunately, being in the"business", I have about a hundred of these carbs (used ) laying around, and can usually find a float to repair an otherwise good carb. that is no longer under warranty.
bounder39zman 11/24/18 12:32pm Tech Issues
RE: 4th Onan Cummins 2500 LP Generator Help Post. ????

I use a simple bbq grill propane tank, with an adapter fitting to connect to the generator inlet. you need a primary regulator, like most RV propane tanks use. make sure to stand it up with valve on top. as you want vapor only. The 2.5 KV Onan LP set was used for about 20 yrs, then replaced a few years ago by the HGJBB model. They have completely different control systems, and knowing which you have would be helpful in diagnosing problem. And, I agree....I hate to see these come to shop, as usually are mounted under vehicle, behind rear axle, and you cant do anything except basic service...and that is difficult. I have never had a customer that said they ever would crawl under the vehicle to even check oil
bounder39zman 10/28/18 06:25pm Tech Issues
RE: 4th Onan Cummins 2500 LP Generator Help Post. ????

please........ post your model and spec #. Those who may hsve info to help you may be better able to help you. If the Genny continues to run after start up, then it is making a.c. power. The control board will shut it off after start-up if not making power. Problem is likely at connection box or at c/b connections, as O.P. have suggested.
bounder39zman 10/24/18 04:42pm Tech Issues
RE: Onan mobile Gen Set HDCAB/HDCAA start problem

glad you got to bottom of problem, and got it going
bounder39zman 10/15/18 07:01pm Tech Issues
RE: Generator Issues

Portable type generators have very "loose" or sloppy governor systems. you want voltage to be 110-125, and hz to be 58-62, but what you have is pretty normal for these units
bounder39zman 10/15/18 06:59pm Tech Issues
RE: Onan mobile Gen Set HDCAB/HDCAA start problem

you stated in previous post that "engine cranks over fine". Then batteries and connections are not the problem. have you checked the glow plugs on the engine? This Isuzu engine needs functioning glow plugs to start when cold. they frequently burn out on this engine, after a few years. to check you need to disconnect the connector strap and "ohm out" each plug. should read about 1 ohm on the plugs. something else to consider, if the coolant temperature sensor goes bad, the control board will not apply voltage to plugs for a suffcient length of time on cold start up. Should "pre-heat" for 10-15 seconds on cold start-up, depending on ambient temps. one more thing...air filter should be checked. a restricted air filter will not let sufficient air to engine to make compression heat to start engine. good luck with finding your solution
bounder39zman 09/27/18 05:13pm Tech Issues
RE: Onan 5BGE Generator stops running..will not restart

yes, oil pressure switch is near the oil filter, under the cylinder head cover. if the switch is bad, the genny will start and run, but shut down when you release the start switch. the oil pressure switch supplies a ground path for the run relay on the control board. the way to check it is to remove the wire from the switch and ground it to a good engine ground. if the engine stays running now, then you need to replace switch. The switch is a N.O. type switch, which means that the switch is "open" when engine not running, but "closes " on oil pressure above approx 7-8 psi. Onan p/n is 309-0322. u probably wont find a suitable replacement at auto parts store, as most automotive oil pressure switches are "N.C." or normally closed type switches
bounder39zman 09/05/18 04:42pm Tech Issues
RE: My latest Onan 2500 LP Thread - No A/C Output

my best guess is that you have a bad connection where wires connect to c/b, or in the connection box, or a bad c/b. all common occurances. The 5 amp fuse protects control and is a 12volt dc fuse, has no effect on 120 volt output. If it was bad, would not crank or run at all. The problem is not in generator itself, as these units will not run if the generator is not producing a.c. power. if your genny is mounted under vehicle, behind rear axle, it will be difficult to get to the c/b to replace it or check the connections.
bounder39zman 09/03/18 08:25am Tech Issues
RE: How do you pull your generator?

At our shop, often use motorcycle jack, or floor jack. Mostly use fork lift, although I realize that it is a luxury to have concrete floor and a FLT.Also sawed up some 2x8 treated boards and made some drive on ramps to get that little extra clearance often needed to slide genset out the side. From pics, looks like a little bit of air cleaner clearance issue. Hope those parts fix your problem. ONAN used that rotary pump with a electric shut off valve on early Marquis sets; later sets just used a pulse/piston type pump. we normally will replace rotary pump/shut off valve with low pressure pump, due to excessive cost of rotary pump and valve
bounder39zman 07/30/18 04:01pm Tech Issues
RE: How do you pull your generator?

At our shop, often use motorcycle jack, or floor jack. Mostly use fork lift, although I realize that it is a luxury to have concrete floor and a FLT.Also sawed up some 2x8 treated boards and made some drive on ramps to get that little extra clearance often needed to slide genset out the side. From pics, looks like a little bit of air cleaner clearance issue. Hope those parts fix your problem. ONAN used that rotary pump with a electric shut off valve on early Marquis sets; later sets just used a pulse/piston type pump. we normally will replace rotary pump/shut off valve with low pressure pump, due to excessive cost of rotary pump and valve
bounder39zman 07/30/18 03:56pm Tech Issues
RE: Generator Won't Turn Over

Either I missed it, or you failed to post model and spec number of your generator. If you post that info, you have a better chance of getting help and advice from people who have had similiar issues or are experienced in repairing these gensets
bounder39zman 07/26/18 03:34pm Class A Motorhomes
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