• Steel Soldiers now has a few new forums, read more about it at: New Munitions Forums!

  • Microsoft MSN, Live, Hotmail, Outlook email users may not be receiving emails. We are working to resolve this issue. Please add support@steelsoldiers.com to your trusted contacts.

M816 Boom Cylinder Lock Valve

Jersey4x4

New member
298
1
0
Location
Absecon, NJ
Does anyone know what happens to the boom on the M816 if a hydraulic line blows? Yes I know oils everywhere but on my Civilian equipment they have lock valves that hold the cylinder in place if a line blows to prevent the entire load from dropping. Does the M816 have any lock valves in the system? I did not see anything in the TMs about lock valves. I was loking for first hand info so I could be a little more reactive in case it happens or keep a closer eye on the lines. I just did a major PM on the boom and greased the snot out of it and changed the hydraulic oil and filter and lubed the cable and slides but am starting to use it almost daily and want to be prepared. I was not prepared for the 75 gallons of hydraulic fluid for the oil change and dont want to do it again any time soon.
 

73m819

Rock = older than dirt , GA. MAFIA , Dirty
Steel Soldiers Supporter
In Memorial
12,195
319
0
Location
gainesville, ga.
just looked at the -34-2p, don't see any pilot check valves, not saying not there, just I could not find
 

12Bravo

Member
42
8
8
Location
Wellsville, Mo
I can't remember if the 816 has them, but I do know that the 936 does. I'm pretty sure that the 816 does, check the manuals to make sure. The Army is pretty good about load tests and the safety of lifting equipment.
 

gimpyrobb

dumpsterlandingfromorbit!
27,785
751
113
Location
Cincy Ohio
My M62 has them, I bet the newer ones do too. Not sure what they are called, but they slow the descent, not stop it
 

Jersey4x4

New member
298
1
0
Location
Absecon, NJ
Yea, I looked through the parts and service and the Austen Western manual and it does not say anything. I cant imagine it not having them but they could be built into the cylinders. I had a lift and the cylinders had them built in to the ports. I figured somebody maybe blew a line at one time and new first hand what happened :(


just looked at the -34-2p, don't see any pilot check valves, not saying not there, just I could not find
 

73m819

Rock = older than dirt , GA. MAFIA , Dirty
Steel Soldiers Supporter
In Memorial
12,195
319
0
Location
gainesville, ga.
the austen western was used on the 819, a garwood is used on the 816
 

gimpyrobb

dumpsterlandingfromorbit!
27,785
751
113
Location
Cincy Ohio
I know mine has them and they are not in the cyls. I had a main hose burst and the multi motor that was on my boom hook, all the way out and all the way up, came down. It was faster than I wanted, but it WAS restricted.
 
377
3
18
Location
Owatonna, MN
They might have an orfice restricting flow on the retract side. We use these on alot of our tailgates at my job some which weigh 8,000lbs and they work well. They hinder performance a little but are a cheap way to reduce rapid decent in case of hydraulic line failure, etc.
 

m816

New member
483
6
0
Location
Chatham, NJ
I seem to remember that there are flow restrictors built into the valve body. We were concerned about way back then but we were driving the M543 at the time and had just switched from the M62's so the memory may be a little fuzy so don't flame me too bad if I am wrong.
 
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website like our supporting vendors. Their ads help keep Steel Soldiers going. Please consider disabling your ad blockers for the site. Thanks!

I've Disabled AdBlock
No Thanks