New tires put on

[DominicM]

6 new Iron Man Tires were put on the 67 MCI today.  It appears that  one issue is taken care of just to find out that you have another.   

the air latch for the front door never pressurized.  I did look around and noticed a solenoid that was getting air, but not allowing air to pass.  Now to find out why the solenoid is not allowing the line to pressurize.

All the air bags appear to need replacing sometime soon.  I figure if Im replacing the air bags might as well replace the brake chambers at the same time.

I may do one wheel at time and do both the chamber and bags until all wheels are done.. 

Looks like I am purchasing a jack, compressor, and impact.   Sounds like REAL FUN.

[eagle19952]

What chambers ? DD3 ?
if so you might want to check on rebuilding yours...saves mega $$$.

[TomC]

I looked up Iron man tires, and got Hercules. What size are you running? Are they Chinese tires?

[DominicM]

Tires are Made in Thailand.  DOT Date is 4317.  All is good and THANK YOUR BUSNUTS!!!! I was out side the MH repainting the bump rail that is above the storage bin doors, and walked by the tires a couple of times and said to my self, Jeff, ( thats what I call myself so that I don't look crazy talking to my self, instead I look like I am talking on my wireless head set.)  Jeff I said, "why don't you check those lug nuts to verify they are tight, you know the Busnuts would suggest that."  Low and behold I have either been working out a lot more than I realized or the lug nuts we not even snugged. Four on each wheel in there rear were not even snugged down.

Looks like I will be calling Franklin and Sons in Big Spring Tx to come make a service call on Tuesday, and bring a torque wrench.

By the way how tight should the lugnuts be and what is the suggested air pressure for a bus?

[lostagain]

I don't trust anybody, professional or not, to work on any of my vehicles. If I have to have something done, I double check.

Your MC7 should likely have the lug nuts tightened to around 450 ft/lb.

Weigh each axle then look up the inflation pressures on the Iron Man/Hercules web site.

You should have a signature with your bus make and model, and your location, so we don't have to look that up in your previous posts.

Good luck.

JC 

[eagle19952]

what is the suggested air pressure for a bus?

10% under the max inflation rated on the tire will get you to the scales.
92 psi is pretty much safe for a bus..imo.
edit{to get to a scale ie: if 92psi is 10% under max inflation }

I run 100-105 psi.

[luvrbus]

The info should be on the data plate with the VIN number

[thomasinnv]

Weigh your bus fully loaded ready to go, how you would usually travel (weigh each axle), and refer to the manufacturers inflation chart. It all depends on your weight. Whats good for one bus may not be for another. Seated buses of the same model all pretty much weigh the same, conversions not so much. 92 psi would be under inflated for me.

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[DominicM]

thank you,

Looks like we be going to the scales at some point in the next couple of weeks for a weigh in and fuel up after all lug nuts get tightened.   The shop aired the tires up to 100psi as I didn't know what the recommendation was.

thank you everyone.

[PP]

thank you,

Looks like we be going to the scales at some point in the next couple of weeks for a weigh in and fuel up after all lug nuts get tightened.   The shop aired the tires up to 100psi as I didn't know what the recommendation was.

thank you everyone.

Hey Jeff,
I run 100 PSI all the way around on my bus. It keeps things simple. Good luck with your bus,
Will

[thomasinnv]

Hey Jeff,
I run 100 PSI all the way around on my bus. It keeps things simple. Good luck with your bus,
Will

My heaviest position calls for 100 if i racall correctly so i run them all at 105-110 to allow a little fudge room, and that way I don't have to worry if one needs to change location to a different axle.

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[luvrbus]

My heaviest position calls for 100 if i racall correctly so i run them all at 105-110 to allow a little fudge room, and that way I don't have to worry if one needs to change location to a different axle.

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Front axle on DL3 is 115 Psi for 12Rx22.5 on 8.25 wheels my 315/80 x22.5 on 9 inch wheels on the front axle I go 120 psi,a almost fully inflated tire will build up less heat so say the tire manufactures 

[DominicM]

I assumed that  the fuller the tire the less room for expansion when heated.   I guess not.  I do have an IR Heat gun I keep in the truck for work, I guess it gets used for the bus also.

[Branderson]

Hey Jeff,
I run 100 PSI all the way around on my bus. It keeps things simple. Good luck with your bus,
Will

Thats what i do as well

[thomasinnv]

Front axle on DL3 is 115 Psi for 12Rx22.5 on 8.25 wheels my 315/80 x22.5 on 9 inch wheels on the front axle I go 120 psi,a almost fully inflated tire will build up less heat so say the tire manufactures 

Hey Clifford how do the bus manufacturers arrive at thier recommended pressures? Are they according to the maximum allowed loading per the axle? Is there any consideration given toward ride quality or handling? Or purely by weight? I have always used the tire manufacturers recommendations according to weight on my bus and truck/trailers. (Anything heavy basically). Should I rethink my strategy? In your opinion is there an advantage to one method over the other? I'm genuinely interested in the pros and cons of the different methods. Inquiring minds want to know, lol.

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