CTIS Parts

Take the wheel valve off and apart. You can swap the valve with the one from your spare tire. If you have one. I have the parts and I am pretty close to you.

Wheel valve was the issue

Thank you. I attempted to remove the wheel valve cover and service the valve , but unfortunately all four of the bolts snapped due to corrosion. We then put on the spare on, and all is well, so the problem was, in fact, a failed wheel valve. The CTIS module in the cab appeared normal after the tire swap. The only oddball thing was that one of the tires only pumped up to 48 psi in Highway mode, and the other tires seemed to go to 55+ (gauge only went to 50 psi). I would like to acquire more of the wheel valves, so if you have some to sell or know of a place to get them, I would be much obliged.I appreciate your help.

Do you want new or used? Email me will atpawnking dotcom
Will

I would like to get 2 new and 2 used please. I would like to get the whole assembly from the banjo valve to the kneeling valve, but that is not critical. I would also like the o rings in that assembly plus possibly the inline filters.

You have to email me I cant talk sales in the open forum its frowned upon
Will

have any wheel valve rebuild kits? Looking for a rear axle dog bone too? Mine was bent. Just checking.

I have brand new wheels valves still inside the box.

https://www.steelsoldiers.com/showthread.php?185265-Wheel-rim-valve-ctis-lmtv-fmtv-mrap-truck

Berend said:

I have brand new wheels valves still inside the box.

https://www.steelsoldiers.com/showthread.php?185265-Wheel-rim-valve-ctis-lmtv-fmtv-mrap-truck

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PM sent

Ohiobenz said:

PM sent

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Open one up see how it looks inside. They all corrode inside from age even if they are unused.

I took one apart ,absolutely brand new inside and out

All the wheel valves are manufactured 03/2016 so only three years old.

Anyone know what this small adjustable valve is called? Rig is a 1998 M1088. Not referring to the CTIS wheel valve, but the valve on the 90* elbow that has a flathead screw adjustment/bleeder. Several of mine are leaking, and no way to seal them up. Feels like a bad o-ring/seal and I need to find some replacements. Can these be removed and replaced with a simple elbow? Any and all info is much appreciated.. Cheers

hmmm.... if my memory is right... folk have unscrewed them.... put a dime inside with silicone sealant and screwed it back down shut. done.

maybe a search using keywords [ valve dime ] will find discussions of this?

crcarson26 said:

Anyone know what this small adjustable valve is called? Rig is a 1998 M1088. Not referring to the CTIS wheel valve, but the valve on the 90* elbow that has a flathead screw adjustment/bleeder. Several of mine are leaking, and no way to seal them up. Feels like a bad o-ring/seal and I need to find some replacements. Can these be removed and replaced with a simple elbow? Any and all info is much appreciated.. Cheers

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I think that might be the thing people have called the "kneeling valve". Maybe try searching for that.

Yep,kneeling valve.


Here it is apart. I just JB weld it closed when the valve seat went away.

The regular elbow can be ordered online for around 40 bucks. The part number is in the tm. You can search it online its is an eaton part if you dont search it as an eaton part its hard to find.

Suprman said:

The regular elbow can be ordered online for around 40 bucks. The part number is in the tm. You can search it online its is an eaton part if you dont search it as an eaton part its hard to find.

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I noticed the "new style" air hoses don't have this "kneeling valve" part (it looks like they just have an elbow). Any idea why they can do without it? Is the valve different?

I think the kneeling valve was an early feature. So the trucks height could be rapidly lowered. No need for them on the back since the bed is lower than the cab. Probably not a feature that saw alot of intended use. Better to replace it with an elbow then risk having issues with it.

Suprman said:

I think the kneeling valve was an early feature. So the trucks height could be rapidly lowered. No need for them on the back since the bed is lower than the cab. Probably not a feature that saw alot of intended use. Better to replace it with an elbow then risk having issues with it.

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Was it intended for someone to open the kneeling valve with a screwdriver/tool? I don't understand what it was supposed to do.

Exactly. Open the valve with a screwdriver and you have flat front tires in a minute or so. Drop the cab height by a few inches.