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RE: 1998 Allegro Bus Air Brake Filter Dryer
Are you getting any moisture in the air tanks?? The dryer will spit every so often to eject moisture, when the filter gets saturated it will every few minutes. If you don't have a problem with any of the above I wouldnt worry about changing it.
This is not quite how they work.
Dryers "Purge" the moisture from the filter medium each time the CUT-OUT PSI is reached. It has nothing to do with moisture content-- they do not monitor that.
And I would strongly suggest not waiting for the filter to completely fail and allow water and/or oil into the air brake and air suspension system before changing the dryer. Every 3-4 years is adequate for the number of miles most RV'ers do.
Least expensive quality way to do it is to buy a factory remanufactured dryer (read that the factory that manufactured the dryer, NOT an aftermarket rebuild that may use components from overseas of dubious quality).
If Bendix, use only Bendix reman. If Midland, only Midland reman, etc. Sometimes packaging makes it difficult to tell. If a question, contact your dryer manufacturer to make sure you get the proper one.
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wolfe10
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02/09/12 04:44pm |
Class A Motorhomes
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RE: Onan 5500 gold overfrenquency fault
To carry this line of thinking a little further, it is not good for any generator to be at "idle" for 10+ minutes. Yes, let it warm up for a few minutes before putting a big load on it, but no need for 10 minute warm up.
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wolfe10
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02/08/12 04:44pm |
Tech Issues
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RE: Tires
Others say they do not expand and contract like they do with air.
Let's keep the FACTS straight. Advertising hype will not overcome Boyle's Law. Nitrogen and dry air both change PSI with temperature change the same-- basically both acting as "ideal gases".
Wet air is clearly different.
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wolfe10
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02/08/12 04:20pm |
Class A Motorhomes
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RE: Tires
Very slight advantages over DRY air.
Both of which have big advantages over the regular WET air found in those coin op air compressors without air dryers.
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wolfe10
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02/08/12 03:41pm |
Class A Motorhomes
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RE: Generator on sale belching fire?
Or an exhaust valve is sticking open or burned allowing combustion flame out the exhaust.
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wolfe10
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02/08/12 12:39pm |
Tech Issues
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RE: Fuel / water drain sucked air instead of draining
In our DP the engine needs to be running.
A little more explanation may be warranted. You clearly do not want to open the fuel filter drain with the engine running.
Assume you mean the engine must be running for the fuel pump to work on your particular engine.
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wolfe10
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02/08/12 12:37pm |
Class A Motorhomes
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RE: Trac bar (panhard bar)
leaf spring need a trak bar the most,they have a lot of sway?
I put them on front and back both have leaf springs.
Not sure I would agree with that statement. While I agree that leaf springs benefit from track bars, air bags have ZERO resistance to lateral/sideways motion between chassis and axles. So air bag suspensions have to have some form of track bar to control lateral movement.
What if you had air bags at the rear end of the springs, instead of the solid spring hangers.
Would two trac bars be needed then or just one mounted to the center of the rear axle.
Neil
Only takes one to stop axle to chassis side to side movement. And, yes many are mounted to the banjo housing.
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wolfe10
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02/08/12 10:41am |
Class A Motorhomes
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RE: Cat 3126 air filter
Couple of comments.
The air filter minder reads TOTAL restriction from side of coach to the air filter minder tap location not just the air filter.
So if the inlet on the side of the coach is too small, the duct from side of coach to air filter too small, corrugated and too long, air filter too small, ALL contribute to a high air filter minder reading.
It is a good idea to record the air filter minder reading after changing the filter AFTER resetting the air filter minder to zero and then after the first high RPM WOT run. If high, look to improve one or more of the above.
Also, I would suggest that changing the filter annually is overkill unless you drive a lot of miles in high dust conditions. A filter is actually better at removing dirt after it is "broken in" when the larger pores are filled with dirt.
I agree with the 3 year rule due to the breakdown of the filter media.
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wolfe10
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02/07/12 08:59pm |
Class A Motorhomes
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RE: Fuel / water drain sucked air instead of draining
I think everyone is making this more difficuilt than needed. Look on top of the filter base and you should find a bleeder port / screw. Loosen this screw slightly while opening the water bleed off. It needs air / venting from some place to get any drainage.
Gasman 2
No, you don't want to introduce air to the fuel system on a diesel. If fuel level in the tank is higher than the primary fuel filter, fuel will run from tank and out the drain-- THAT is what you want.
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wolfe10
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02/07/12 06:48pm |
Class A Motorhomes
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RE: Trac bar (panhard bar)
leaf spring need a trak bar the most,they have a lot of sway?
I put them on front and back both have leaf springs.
Not sure I would agree with that statement. While I agree that leaf springs benefit from track bars, air bags have ZERO resistance to lateral/sideways motion between chassis and axles. So air bag suspensions have to have some form of track bar to control lateral movement.
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wolfe10
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02/07/12 05:35pm |
Class A Motorhomes
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RE: Cat 3126 air filter
Yes, some filters have so little restriction that they do not register on the air filter minder.
But the filter minder is easy to test. Remove the tube from the intake end and suck on it. It should instantly peg full vacuum reading and hold there until you push the button on the bottom to reset it.
And once reset, you will have to drive hard (higher RPM WOT) to pull maximum vacuum reading which the filter will "store" as maximum vacuum achieved.
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wolfe10
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02/07/12 04:28pm |
Class A Motorhomes
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RE: Fuel / water drain sucked air instead of draining
A new coach. Having to jerryrig it for routine maintaince?
The real question is why does the OP have to jump through hoops ?
Sorry, I don't get it.
Not sure there is a perfect answer here-- at least that I have seen.
If level of fuel in the tank is materially higher than the fuel filter, fuel will pour out when the filter is removed.
If level of fuel in the tank is materially lower than the fuel filter, fuel will siphon back from filter to tank leaving XX feet of air to be purged.
The "right answer" IMO is to install the primary fuel filter low and with a ball valve at the filter intake. Shut off ball valve before removing filter.
Part of this, at least when changing filters, also depends on the engine and fuel filter setup. Example: On a Caterpillar engine with Caterpillar secondary fuel filter and MANUAL PRIMER PUMP, you can install the filters dry and use the manual pump to prime.
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wolfe10
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02/07/12 04:21pm |
Class A Motorhomes
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RE: Trans Temp Gauge
Allison uses a sensor mounted in the sump and most manufacturers use that one for their in dash gauges.
Mike.
Actually, there is NO standard location for the transmission temperature sender on Allisons. Some are in the transmission, some in the line TO the transmission cooler and some in the line OUT of the transmission cooler.
VERY different readings depending on location. As suggested, determine what is normal for the location of YOUR sender.
Are you 100% certain. I am not arguing, I am merely saying that my local Allison dealer told me the above two years ago when I was purchasing my filters.
Mike.
Mike,
Yes, this from an Allison engineer I work with. And I have seen coaches with all three locations for the transmission temp sender.
This is for the 3000 series. There may be a prescribed location for other transmissions-- I don't know.
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wolfe10
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02/07/12 12:46pm |
Class A Motorhomes
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RE: Fuel / water drain sucked air instead of draining
Couple of ways to do it:
Fill tank/raise the front of the coach= drain with coach headed up hill.
Yes, you can use your hand over the fuel inlet with an air chuck to slightly pressurize the tank. It should not take over 2-3 PSI to raise the fuel above the level of the filter.
Relocate the filter lower on the chassis.
And, most importantly, with a clear plastic bowl on the primary fuel filter (fit a filter with one if you don't have one now) all you need to do is LOOK to see if there is water or debris in the fuel-- no need to open unless there is a problem.
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wolfe10
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02/07/12 12:44pm |
Class A Motorhomes
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RE: Trans Temp Gauge
Allison uses a sensor mounted in the sump and most manufacturers use that one for their in dash gauges.
Mike.
Actually, there is NO standard location for the transmission temperature sender on Allisons. Some are in the transmission, some in the line TO the transmission cooler and some in the line OUT of the transmission cooler.
VERY different readings depending on location. As suggested, determine what is normal for the location of YOUR sender.
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wolfe10
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02/07/12 10:37am |
Class A Motorhomes
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RE: Finally looked at the 96 Monaco Executive. Questions...
The seller just told me he checked the date code on the tires and they are 8-10 years old. Can I run these?
In a word, NO.
Under ideal conditions (always run at proper PSI, covered to protect them from UV/sunlight, driven frequently, etc, they still need to be replaced after 8-10 years.
Since you really don't know how they have been cared for, that would not be a reasonable risk.
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wolfe10
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02/06/12 02:10pm |
Class A Motorhomes
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RE: Follow-up on new Koni FSDs
Could be a chassis issue mine is a Workhorse, maybe they don't work as well on the Ford chassis.
We have the FSD's on just the front suspension of our F53 chassis and they worked great in providing a more comfortable ride, however there were others who installed them on their F53 chassis and were extremely disappointed with the results.
And that is perfectly reasonable. No shock is a silver bullet. If the springs are underloaded, shocks will be a lot less effective than if the springs are properly loaded. One could blame the shocks, but that's not really the cause in many cases. That is why you will see legitimate good and bad posts on exactly the same shock, same chassis.
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wolfe10
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02/05/12 08:20pm |
Class A Motorhomes
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RE: How close are you to your max GVWR and/or CCC?
Your question will not really give you a viable answer.
On a spring chassis harsh ride is more likely to be a function of too LIGHTLY loaded than too heavily loaded. Yes, in the extreme well overloaded will also produce a harsher ride. But you will have handling, braking, component wear and safety issues long before overloading degrades the quality of the ride.
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wolfe10
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02/05/12 02:17pm |
Class A Motorhomes
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RE: Trac bar (panhard bar)
IMO track bar with leaf springs won't make much of a difference. Coil spring or air suspensions needs a track bar.
With today's longer leaf springs with fewer leafs, I would disagree with your conclusion.
Track bars/Panhard rods ARE effective on these applications.
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wolfe10
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02/05/12 09:21am |
Class A Motorhomes
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RE: Purchasing a Diesel Pusher!!!
Clicky: http://www.foreforums.com/
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wolfe10
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02/04/12 07:59pm |
Class A Motorhomes
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