M923A2 Doing 80 MPH!!

[98G]

Safety had better matter to you more. It is not a cross country/highway truck (not to say one cannot be built).

You have very little idea of the damage you could do with one of these at 60-70. Do you see a roll bar for example?

A rollbar won't improve safety for anyone who isn't in the truck. His life is his to risk as he sees fit...

I found it enlightening to see one that had rolled over...

 

[porkysplace]

You are right. I don't do the extreme offloading that some guys do here. I did a pond 6 times and on my final pass the truck got bogged for 5 days until I could get it pulled out. I'm a newbie.

Is there even anything I van do to improve turning radius even with 14.00's?

So have you tore all 6 hubs down and and serviced the bearings and checked the differential fluid for water ?
If not it should be at the top of your list of maintenance .

 

[peteybabes]

So have you tore all 6 hubs down and and serviced the bearings and checked the differential fluid for water ?
If not it should be at the top of your list of maintenance .

i'm not going to lie, i drove this without fluid changes, but i'm hoping to get the truck registered this week and will bring the truck to somebody to do a full fluid change on the truck. will cost me in the neighborhood of $1300...!!!

 

[98G]

i'm not going to lie, i drove this without fluid changes, but i'm hoping to get the truck registered this week and will bring the truck to somebody to do a full fluid change on the truck. will cost me in the neighborhood of $1300...!!!

Are you made of money? These things are straightforward enough that there is very little you can't learn to do yourself.

Part of being a competent operator is knowing how it works. A big piece of knowing how it works is being able to maintain it yourself.

Not to mention the cost difference. The fluids themselves cost enough, without adding outrageous hourly rates on top of it, probably done by someone who is less familiar with the equipment than you are...

 

[porkysplace]

i'm not going to lie, i drove this without fluid changes, but i'm hoping to get the truck registered this week and will bring the truck to somebody to do a full fluid change on the truck. will cost me in the neighborhood of $1300...!!!

When you sink them and don't service them after you sink them , you end up with wheel bearings like this. Which then tend to sieze up and blow apart.

 

[peteybabes]

Are you made of money? These things are straightforward enough that there is very little you can't learn to do yourself.

Part of being a competent operator is knowing how it works. A big piece of knowing how it works is being able to maintain it yourself.

Not to mention the cost difference. The fluids themselves cost enough, without adding outrageous hourly rates on top of it, probably done by someone who is less familiar with the equipment than you are...

This would be all fluids the truck over not just the diffs. this would be performed by C&C who i hope have the most experience. i quite simply have a busy schedule and a job so i dont have the time to do the work myself unfortunately.

 

[porkysplace]

This would be all fluids the truck over not just the diffs. this would be performed by C&C who i hope have the most experience. i quite simply have a busy schedule and a job so i dont have the time to do the work myself unfortunately.

4 hours each way to C & C from Gahanna , OH . It would probably take less time to change the fluids it than you will spend driving there and back.

 

[infidel got me]

I think the loud exhaust has made him deaf

 

[wreckerman893]

My guess is that you have never had the pleasure of blowing a steering tire on a big truck at highway speeds. I have and once would have been enough but I have been blessed several times thanks to low bidders and cheap bosses.

There are two possible bodily reactions to this.

(1) You achieve "Pucker Factor 10" in less than a heartbeat ("Pucker Factor 1" is the normal tightness of your anal O ring).

(2) You achieve "Pucker Factor -10 in which you immediately evacuate your bowels.

If the left tire blows and you are on a four lane road and no one is on your left you may be able to maintain enough control to get off to the right shoulder and stop without an accident.

If the right tire blows and you are one a four lane road you may have time to find a soft landing spot.

If you are on a two lane road with narrow shoulders I hope you have a good relationship with the deity of your choice.

Take a lesson from the Zen masters. Embrace the slow and enjoy it. Smile and wave to the people you see. You already know they wish they had one.

Be safe out there.

 

[98G]

I think the loud exhaust has made him deaf

To his credit , he is asking questions and seems to be paying attention to answers.

Some people you just can't tell anything. He doesn't seem to be one of those.

 

[Alexsha]

I'm just going off of the spec for "HWY" mode on the CTIS system... I believe it is 80 up front and 60 in the rear?

CTIS for non-wreckers puts 60psi in all tires. It's a single channel system.

 

[MtnSnow]

CTIS for non-wreckers puts 60psi in all tires. It's a single channel system.

If they haven't gotten the Updated ECU which puts tire pressure at 70psi for non-wreckers and 90psi for wreckers

See http://psmag.radionerds.com/images/7/70/PS_Magazine_Issue_726_May_2013.pdf for the whole monthly magazine and attached is a screenshot of the pages taking about the updated pressures:

 

[Triple C]

I just hope the OP stays safe. I think we all have had a learning curve. I learned my lesson the hard way and I was fortunate no one was hurt.

 

[98G]

I just hope the OP stays safe. I think we all have had a learning curve. I learned my lesson the hard way and I was fortunate no one was hurt.

Please give details so we can all learn from it...

 

[Alexsha]

If they haven't gotten the Updated ECU which puts tire pressure at 70psi for non-wreckers and 90psi for wreckers

See http://psmag.radionerds.com/images/7/70/PS_Magazine_Issue_726_May_2013.pdf for the whole monthly magazine and attached is a screenshot of the pages taking about the updated pressures:
View attachment 586055

True, but regardless, it's a single channel system. You won't have different PSI in different wheels (outside of minor variation).

 

[MtnSnow]

Correct it is a single channel so 60/70/90 psi in ALL wheels depending on which system they have.

 

[quickfarms]

My guess is that you have never had the pleasure of blowing a steering tire on a big truck at highway speeds. I have and once would have been enough but I have been blessed several times thanks to low bidders and cheap bosses.

There are two possible bodily reactions to this.

(1) You achieve "Pucker Factor 10" in less than a heartbeat ("Pucker Factor 1" is the normal tightness of your anal O ring).

(2) You achieve "Pucker Factor -10 in which you immediately evacuate your bowels.

If the left tire blows and you are on a four lane road and no one is on your left you may be able to maintain enough control to get off to the right shoulder and stop without an accident.

If the right tire blows and you are one a four lane road you may have time to find a soft landing spot.

If you are on a two lane road with narrow shoulders I hope you have a good relationship with the deity of your choice.

Take a lesson from the Zen masters. Embrace the slow and enjoy it. Smile and wave to the people you see. You already know they wish they had one.

Be safe out there.

Blowing a tire is not the end of the world, as long as you do not panic.

When I was young I used to drive professionally and we were constantly overloaded.

Blowing a rear tire, even loaded, at freeway speeds was no big deal.

I remember driving on a two lane interstate, in the left lane, and hearing a load noise. The next thing I remember seeing was my passenger front tire passing me. When the front end dropped the truck did try to pull off to the right but I straightened it out and slowed down and pulled into the median. Our dispatcher sent the tow truck out because of an incident another driver had, the tow truck did lift the truck out of the dirt do the tire changer could put my new tire on.

The one thing I remember about my blowouts is how the other truck drivers around me slowed down to allow me the room to get out of the roadway.

 

[peteybabes]

CTIS for non-wreckers puts 60psi in all tires. It's a single channel system.

I haven't checked the fronts, but my rears stay about 55psi.

 

[peteybabes]

i am interested in this goodyear publication: http://www.goodyear.com/cfmx/web/gov/pdf/military_tire_brochure.pdf

i am interested in the G rated 395/85R20 which is rated to 81 MPH @ 95psi. the load capacity being 9370 per tire...

this would give me much more piece of mind at 65-70mph...

 

[Triple C]

98G - I did in post #89 but here it is again to remind folk. here is my experience with exceeding the rated speed. I didn't have my glasses on when I picked this truck up. I should have paid more attention to the rated speed because after 3 hrs doing about 62, the front left steer tire exploded in rush hour traffic while I was in the center lane. The tire had very little wear on it and a little low when I picked the truck up. I aired the tires up and left. I was very fortunate no one was hurt. The second issue was the speedometer was off and I didn't realize it. That is one reason I was driving over the rated speed limit as well. As I said, do what you want but I can tell you from experience, when the steer tire lets go, it gets interesting in a hurry.