RV.Net Open Roads Forum: Search

RV Blog

  |  

RV Sales

  |  

Campgrounds

  |  

RV Parks

  |  

RV Club

  |  

RV Buyers Guide

  |  

Roadside Assistance

  |  

Extended Service Plan

  |  

RV Travel Assistance

  |  

RV Credit Card

  |  

RV Loans

Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Help and Support  |  Contact



Open Roads Forum  >  Search the Forums

 > Your search for posts made by 'JSS1439' found 13 matches.

Sort by:    Search within results:
  Subject Author Date Posted Forum
RE: Cummins Onan 5500 question

I also suspect a clogged idle jet- I would run some Seafoam through it. What happens is the throttle closes, but the idle jet doesn't provide enough fuel, so it opens up, but the main jet provides too much..... Yes. IIRC, the idle jet is under a cap, so getting there is tricky. I drilled into my cap and put a screw into the hole to pull the cap off. I don't have experience with the carb in the HGJAB 5500, however. Ok. Thanks for the edits. Got'em.
JSS1439 09/27/13 07:23am Tech Issues
RE: Cummins Onan 5500 question

I also suspect a clogged idle jet- I would run some Seafoam through it. What happens is the throttle closes, but the idle jet doesn't provide enough fuel, so it opens up, but the main jet provides too much..... Thanks Chris, That's something else I was planning to do today. Run a couple gallons of fresh gas with Seafoam. I generally use Sta-Bil but seems people prefer Seafoam today.
JSS1439 09/27/13 07:20am Tech Issues
RE: Cummins Onan 5500 question

There are different spec letters for the same gens. Look at your model number which starts with HGJAB so and so the spec letter is at the end of those letters and numbers on your data tag. It tells you which parts or manuals you need. Ok thanks. That spec letter is E
JSS1439 09/27/13 07:12am Tech Issues
RE: Cummins Onan 5500 question

Hey DryCamper11, I adjusted that governor spring in both directions 3 notches and couldn't tell a difference. Any other suggestions that may help the "hunting" at low loads? If it made no difference - set it back to where it was, then go through the troubleshooting section of the manual. I've got two Onans with the manual governor and one step in the setup is to adjust the position of that spring to increase sensitivity until it begins to hunt, then back it off until hunting stops. I find that hunting occurs most often at low power levels, and over the time, as the gen ages, I occasionally have to readjust it by moving it towards the end (away from the pivot shaft). That reduces sensitivity and decreases the tendency to hunt. You can try moving the spring all the way to the far end to see if it stops hunting (just as a test), but that shouldn't be necessary in normal use. If it's not a hunting problem, make sure you've disconnected all loads. I once saw a problem that looked like hunting, but it turned out to be a load that would start up, the gen would go full throttle trying to power that load, but before the gen could stabilize, the device would decide the voltage was too low and would shut off, so the gen would go back to idle. The cycle would repeat. A microwave on partial power can make the gen do this, too, as the microwave cycles on/off to limit power. OK good info. Thanks again for your help, I'll play with the spring some more and see if it improves.
JSS1439 09/27/13 07:10am Tech Issues
RE: Cummins Onan 5500 question

Hey DryCamper11, I adjusted that governor spring in both directions 3 notches and couldn't tell a difference. Any other suggestions that may help the "hunting" at low loads?
JSS1439 09/26/13 04:15pm Tech Issues
RE: Cummins Onan 5500 question

I suspect gas sitting too long in the carb and gumming it up. There is this stuff called mechanic in a bottle that will fix that. I put Sta-bil in my gas.
JSS1439 09/26/13 04:11pm Tech Issues
RE: Cummins Onan 5500 question

No service faults at all. It never stops running, just throttles up and down but smooths out when a load is put on it. Check the frequency and voltage. I love my Kill A Watt for that at $20. You are experiencing "hunting." I get it with my Onan 6500. Here's the manual: http://www.cumminsonan.com/www/pdf/manuals/983-0501D.pdfhttp://www.cumminsonan.com/www/pdf/manuals/983-0501D.pdf On page 8-20 you can see the governor. You want to move the spring a bit farther (one notch will probably do it) from the centrifugal shaft to reduce hunting. Haha I was just outside running it and was looking at that spring thinking about adjusting it. I thought I better ask before moving it. I'll do that and let you know if it helps. Thanks DryCamper11
JSS1439 09/26/13 03:13pm Tech Issues
RE: Cummins Onan 5500 question

Do you see any service fault codes? There are dozens of them. The HGJAB 5500 provides extensive diagnostics by causing the status indicator light on the Control Switch to blink in coded fashion. Following a fault shutdown, the indicator light will repeatedly blink 2, 3 or 4 blinks at a time. • Two blinks indicates a low oil pressure fault. • Three blinks indicates a service fault. Press Stop once to cause the two-digit, second-level fault code to blink. (Pressing Stop again will stop the blinking.)The two-digit code consists of 1, 2, 3, 4 or 5 blinks, a brief pause, and then 1 to 9 blinks. The first set of blinks represents the tens digit and the second set of blinks the units digit of the fault code number. • Four blinks indicates that cranking exceeded 30 seconds without the engine starting. No service faults at all. It never stops running, just throttles up and down but smooths out when a load is put on it.
JSS1439 09/26/13 02:40pm Tech Issues
RE: Cummins Onan 5500 question

Just a simple thought. Is the intake/filter clean/unobstructed? Yes I checked and it's clean. It only has 102 hours on it.
JSS1439 09/26/13 02:01pm Tech Issues
RE: Cummins Onan 5500 question

They made those carbs were you can't adjust them. Now if you want to pull that plastic piece for the altitude off the the carb then you can adjust the main jet I did not tell to do it. Is it still under warranty ? If you do try to adjust it mark where you started. What's the spec on your gen I will look for a service manual so you can read about setting the sensitivity . Thanks, sorry but what exactly do you mean by spec?
JSS1439 09/26/13 01:53pm Tech Issues
RE: Cummins Onan 5500 question

Bump Anybody else know if this would be abnormal operation or does it sound right. Thanks for your time.
JSS1439 09/26/13 09:28am Tech Issues
RE: Cummins Onan 5500 question

First thng I would check it the altitude setting and then electrical connection at the choke for loosness or corosion. Thanks Harold, I checked all that and the connections look good and the altitude setting is on 0. I live in Ohio which is not a high altitude so I assume that is correct.
JSS1439 09/25/13 04:12pm Tech Issues
Cummins Onan 5500 question

Hi all, I have a new toy hauler with a Cummins Onan 5500 generator model HGJAB built in. When operating with a load it runs really nice and smooth but when at idle with little load it throttles up and down every 3-5 seconds. Sounds like it may want to stall but then surges back up over and over again. I took the front cover off and you could see the carburetor gassing it like I said every 3-5 seconds. Also, the exhaust smells kinda gassey like it's running rich. Does this sound like normal operation? It's new and only has 102 hours on it. Thanks for your time
JSS1439 09/25/13 03:18pm Tech Issues
Sort by:    Search within results:


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:

© 2014 RV.Net | Terms & Conditions | PRIVACY POLICY | YOUR PRIVACY RIGHTS