To DP or not DP

Tom/Barb wrote:

map40 wrote:

Tom/Barb wrote:
I would bet that when a coach sets a week on the level jacks with out moving, it will set there 15 minutes more while Mike slides under there and changes a brake canister fitting.

No.... Bad assumption. When you go under you TOUCH stuff. Either a hose, a pipe, a valve, you move a hydraulic line out of the way to see better, next thing you know, coach comes down.

Do a search for "Rolls Royce Phanthom kills technician". A poor guy had a Rolls on a lift but did not lock it correctly. When he went under and starter looking at a bolt in the exhaust, the car came down.
It is a really good example on how even when you believe you are safe but you missed a minor safety backup, you could be in trouble.

When you do not know what you are doing, you don't belong under there.

But tell me what you could move to cause the jacks to collapse ?
Remember the air ride system is already drained, when you raise the coach. so it has been on the jacks for week. and jacks must be selected up electrically to lower the coach.
Changing a brake line fitting isn't going to do that.
When you don't know the difference between falling off a car lift and a coach on its leveling jacks you shouldn't post.

Sorry, I did not want to start an argument. I have seen enough industrial accidents for cases like this. Especially when people know what they are doing, because the become complaicent, they forget little things, and that is what kills them. You can have a hose under preasure for a week, and you just went under to check something else, touched it accidentally and it breaks. I learn working in over 50 automotive and aerospace facilities NEVER to trust Hydraulic or air systems.
That is the thing I love about the Class C we have in the fleet. You drive them on wood stands and you are good to go. Even if a tire blows out, you are still safe.