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5 ton lockout hubs

jatonka

Well-known member
1,802
87
48
Location
Ephratah, New York
Is any one out there familiar with the workings of the air actuated sprag in the 5 ton? I have one apart at my shop and I can't see where there is a neutral position where the sprag collar would lay when there is no air to the cylinder. I think the sprag defaults to forward direction when the transmission is in any forward gear and is set to reverse when the reverse gear rail actuates the valve on the transmission and puts air to the air cylinder on the transfer case. If I didn't have these reservations about the ability of the sprag to really lay in neutral, I would already be selling the 5 ton lockout hubs. I understand that some of you just shut the air off to the air cylinder and call it good, my concern is that it does not really put the sprag in neutral or free wheel. Someone wanna explain where I am missing the actual working of this 5 ton transfer case? JT
 

Trango

Member
735
23
18
Location
Boulder, CO
Last edited:
355
12
18
Location
New Enterprise Pa
I would be in also. I believe 2.5 ton lockout hubs are like $500? so somewhere along those lines would work for me.
Being that the size is twice that of a 2.5 ton it'll be more than $500 but they won't be no $2400 a pair like those goofs at Spare Parts Inc. I talked to Mitchell there and he's a bit high up on his horse and doesn't care if people buy his stuff or not. So oh well Russ can make them alot cheaper than that.
 

Squirt-Truck

Master Chief
Steel Soldiers Supporter
1,180
162
63
Location
Marietta, Georgia
Jatonka, THe 5-ton sprag system is spring loaded to the center position. When normally installed there is ALWAYS air on one side or the other. The poppet valves on the shifter rail are simply made that way.
The manual (pp 2-60 of the 211-10) even indicates to open the air drain to allow the sprag to return to netural.
I installed an air cut-off years ago (and thousands of miles) on lil-Squirt and have had no issues.
 

jatonka

Well-known member
1,802
87
48
Location
Ephratah, New York
Hi Squirt Truck, I have a 5 ton transfer case apart in my garage, I have the top hat off. I figure that it is in the neutral position as it sits there with no air to it. I will try it tomorrow morning. It ought to turn free as it sits there, right? If that is the case, I will be real happy, and so will a bunch of other people, I haven't done the lockouts for them because I didn't think they would be totally effective. I really appreciate your input. John T
 

ncduece

Member
138
1
18
Location
wilmington nc
I JUST REPLACED MY TRANSFER CASE IN MY M818 i was having problems with it locking the front wheels in forward, made notes about testing it after i put the new xcase in with out air the front wheel off the ground and rotating it by hand it the front wheel will spin in ether direction. with air up and shifter in forward the front wheel will spin forward but not reverse. with air up shifter in reverse the front wheel will spin reverse but not forward.
 

Squirt-Truck

Master Chief
Steel Soldiers Supporter
1,180
162
63
Location
Marietta, Georgia
ncduece,
Most common failure on the 5-ton failure is in the poppet valves on the shifter rail. Air leaks in the operating cylinder are common also but not killer.

What you identified is the proper way to test the sprag operation.
 

bigford

Member
54
4
8
Location
Alvin, Texas
I'll take a set if reasonable also.
AVM used to make some years ago for the 2-1/2 and 5 tons. I had a set of the 2-1/2 tons with the air shift t-case. Just left the air off until I went offroad and locked in the hubs.
 
355
12
18
Location
New Enterprise Pa
I hope to have an answer in a couple days for ya on price. He's still doin some figures. Does anyone have a hub they would be willing to send to him for some measureing so he can save some time on the design? He'll conpensate ya for your time and the shipping cost to and from. If so let me know asap.

Thanks
Adam
 

BLOWN Z

New member
5
0
0
Location
mo
5 ton lockouts

i would like a set of 5 ton lockouts cost dosent matter call with imfo on lockouts 314 2801442
 
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