17 replies to this topic

[luv2trav]

We have an 07 Monaco Cayman. We have been having a problem with the jacks down alarm. This happened as we were driving down the interstate a couple of years ago. The jacks were up but the alarm kept sounding. The dealer said that everything was fine and we didn't have any further problem until now. We retract the jacks and visually they seem to be all the way up. As soon as we put the coach into drive the alarm starts going off. It is quite nerve wracking. Anybody have any ideas as to what the problem could be?
thanks

[wolfe10]

What brand and model of jacks to you have?

Exactly what steps do you follow to stow them?

And have you confirmed visually that all the jacks are indeed fully stowed (no shiny piston showing)?

The reason I ask, the HWH jacks on our coach will do that if I turn them off after the jacks initially come up and the alarm goes off vs the correct way of letting the system turn itself off. Letting it turn itself off allows a few minutes for all the extra fluid in those long lines to the back jacks to bleed back into the reservoir. Turning it off with the switch can trap extra fluid in the lines causing the alarm to trigger.

Brett

[WhiteEagle]

My previous MH - a 2007 Winn. Voyage 35A had the Quikee Best Level system/jacks and did that intermittently.... all worked right and fluid was fine.. cleaned and dry lubed the jacks but still did it every now and then... was not an issue but concerning/annoying.. did not seem to be related to temp / weather, etc.. seemed like when I planned to take it in for dealers analysis, it would not happen for days/weeks again...

[bizsmith@yahoo.com]

A problem with any Monaco jacks is that the level of hydraulic fluid in the reservoir gets low and the alarm goes off. Not really a big problem, as there is always a very slight leakage every time the jacks are extended. Just locate the reservoir and top off with hydraulic jack fluid available at almost any auto supple store. The level does not have to drop much to cause the alarm, on mine only a cup or two.

[LivingLikeEachDayIsMyLast]

Near the top of the fluid reservoir, there is a fluid level switch.The fluid level must touch that switch before the jacks down light will go off.My system uses dexron auto trans fluid. Your owners manual will specify what type of fluid your system uses. Also on my system that fluid level switch must be screwed out to fill the reservoir.It's a small hole without much room around it, so I use an eight ounce syringe with a six inch piece of flexible hose attached to the needle end. At least twice a year, I have to add 4-8 ounces of fluid.

[hermanmullins]

A problem with any Monaco jacks is that the level of hydraulic fluid in the reservoir gets low and the alarm goes off. Not really a big problem, as there is always a very slight leakage every time the jacks are extended. Just locate the reservoir and top off with hydraulic jack fluid available at almost any auto supple store. The level does not have to drop much to cause the alarm, on mine only a cup or two.

Before you add hydraulic jack oil check with yout mfg. Most all use Dextron Automatinc Transmission Fluid. Please do not add anything untill you check with the Mfg.

[luv2trav]

Thanks all....seems the fluid was low.

Will add some and see what happens (fingers crossed).

[bizsmith@yahoo.com]

Yes, check for proper fluid type. I was told to use hydraulic jack fluid by Monaco service but others may be different.

[theoldman]

Mine did the same, when I would hit a good bump it would go off.

Have it in the shop in Columbus now. They called the tech. at Kwikee. He said if not low on fluid look at the reed switches BUT there are 4 so having all 4 replaced. Hopeing that takes care of it.

[chucknewman]

I had the same issue. Each time I used the hydraulic actuated slide (which uses the RVA jack pump via a separate slide manifold), and started driving I got the low level alarm. The problem was a small leak in one of two hydraulic hoses connected to the slide's ram. The one hose was defective from manufacture and allowed excess fluid to drain from the reservoir. I replaced both hoses and never an issue again.

The post "...there is always a very slight leakage every time the jacks are extended..." means you have an abnormal condition. There should be no leaks anywhere in a properly maintained hydraulic system. This is particularly true in dual port rams (pressure in, pressure out) because the leak will allow the line at static pressure to bleed down to atmosphere or some lesser pressure than desired. This very condition allowed my slide to push out 1 to 4 inches while driving, depending on amount of leakage, speed, tightness of turns, etc. Again all due to the defective hose.

I agree many brands of RV jack systems use a single port ram to extend, and springs to retract the ram. But still the rams and all fittings should be dry on the surface. Leakage is not acceptable.

Chuck

[wintex55]

I had this same problem on my Allegro Bay. When the jacks were retracted, sometimes the alarm would not turn off. At first, I would use a 5' long 2x2 to pry up on the jack and the alarm would turn off. I isolated the problem to the left front jack. Sometimes I would be driving and the "Jacks Down" alarm would come on. Again, prying up on the left front jack, after pulling to the shoulder of the road, would
cause the alarm to go off.

After doing this a few times, I crawled under the MH and checked the left front jack and found that there was a "Limit Switch" that turned off the alarm when the jack reached the "Up" position. Further, there was an "adjustment" for the switch. I made an adjustment that activated the switch approximately 1/16th sooner and that solved the problem permanently. Apparently, the switch was set, at the factory, right on the edge of the proper operating position and sometimes the jack shaft would bottom out just before the switch was activated. My Allegro Bay is going on thirteen and I've not had any further problem with that jack.

[Archambeault]

My engine stallled out on me while driving. When the mobile tech turned on the key
all the lights on the jacks control started flashing. What might the problem be.
could this problem be cause for the engine to stall. Also we got the engine started
but would not move forward as if the brakes were on.

[wolfe10]

Archambeault,

Please tell us what coach/chassis you have.

But clearly a battery voltage issue (bad battery, bad alternator, bad connection) could both cause "unusual" reactions from electrical components and cause and electronically controlled engine to not run/run poorly.

So, I would start by checking the batteries and electrical connections. Then, put a voltmeter on it at the dash and see what you get when the symptoms occur.

[JohnQFWB]

On my 1997 Safari with RIVA system (3 point) I would get the ding ding ding whenever the fluid level (Dextron 3) would get low.

Had the RV Tech's check it out last time I was in for service. Tech said that the right rear manual value was not snugged shut and was probably the culprit. He snugged it up and so far no dinging but time will tell.

[Archambeault]

Hello Wolfe10
Thank you for a prompt reply.
Regarding the levelers problem.
I have a 2004 Fleetwood Discovery, 39J, Allison, Freightliner chassis.
I am hard of hearing and wife complained about a shrill whistle.
Shorty after that the engine died.
It started up again after a tech injected starter fluid into the engine.
Ran it at 1500 rpm for several minutes and was advised air in the fuel lines.
the levelers light came on, all of them and began to flash.
They went off after a short time.
With the engine now running I put it in gear, with the engine running and it felt like the brakes were on.
Coach will need to be towed to shop in the AM.
IF !! The leveler fluid is low...Could I add so that it will move.
Can a mobile mechanic bypass the signal from the levelers if they are responsible
for locking down the drive unit.

[Jurisinceptor]

This happened to me once with Power Gear jacks.  It turned out that I need to add hydraulic fluid.

 

The sensor that senses that the jacks are down does so based on the reservoir re-filling with fluid when you retract.  I was retracted but there was just a tiny amount of fluid that needed to be added to tell the sensor that the reservoir was refilled and that the jacks were retracted. 

 

I added the fluid and that was about 4 years ago. 

 

No problem since.