Jack Stands
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02-09-2007, 23:38
Post: #11
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Jack Stands
Hi David,
Youââ¬â¢re welcome. I use 2 methods. First if my jacks are working on the coach I will ground the front and raise it about 4 in. so there is a very stable front. I then use 2X12 laminate planks cut square I got from a building scrap pile. I stack them to make about 8 in. I then run the coach jacks up to full. Be careful now that the coach is up. I will then be able to use a regular floor jack at the axle. When you use a jack on the drive axle you can place it on any stable area. I will usually jack the one side up with the floor jack and then place the stand on the axle. Then repeat on the other side. The stands are for safety not holding the coach if the coach jacks inadvertently lowers. With this config I can pull the tires, the hub with the brake drum attached or any other thing in the back with safety. The second way is to get a 20 ton piston jack. They are about 10 in high and 6 in round. The lift pad has a screw that you can use to adjust up to the axle housing then jack it up. I have both jacks and depending on the job is how I determine which method I use. Please note: that when you are dealing with so much weight you have to support the base of everything. I have also 12X12in Diamond plate that is 1/4 in thick. I place the coach jacks foot on that with the wood under it. I don't know if you have had your jacks down on asphalt but you sink in. Another trick to save the tires. For longer term parking on cement or asphalt get the plastic cutting board the kind that you can roll. Put under the tires. The cement will leach out the oils in the tire and age them. FYI: The 40' 88 XXV has a gross weight of 45,000. That is how I run. Have fun learning about the coach. Paul Williams 88XXV 8V92 -----Original Message----- From: dmb993@... To: WanderlodgeForum@yahoogroups.com Sent: Sat, 10 Feb 2007 2:43 AM Subject: Re: [WanderlodgeForum] Jack stands Thanks Paul, Your advice is a great help and makes sense. After all, the drive axle does support the entire weight of the rear of the coach when the air is dumped from the Tag. How do you jack up the drive axle? Where do you place the jack - on the differential pumpkin? What kind of jack or jacks do you use? Thanks, David Brady '02 LXi, Smokey NC PRWillms@... wrote: > Hi Dave, DO NOT support your coach with you tag. It is only rated at 10,000 lbs only!! Use the side frame that is part of the solid frame. Or what I do is use my leveling jacks to lighten the weight on the axle then jack up the axel to place the stands. Using 2 each 20,000# stands should be fine. Remember you are not supporting the whole weight of the coach. Rull of thumb, Use the stand rated at or higher then what the drive axel is rated for and only use 2 at a time. > Good luck, > > > Paul Williams 88XXV 8V92 > In South Lake Tahoe > -----Original Message----- > From: dmb993@... > To: wanderlodge@yahoogroups.com; WanderlodgeForum@yahoogroups.com > Sent: Fri, 9 Feb 2007 9:47 PM > Subject: [WanderlodgeForum] Jack stands > > Folks, > > I need to do some work under my bus. I bought a pair of 20 > ton OTC jack stands and plan to use my HWH jacks to jack > the rear of the bus and the OTC jack stands to support it once > lifted. I read the file "working safely under your bus" and note > that the jack stands need to be positioned under the frame rails > or under the axles. Is it reasonable to place the jack stands under > the tag axle. My LXi has a tag axle that's supported by a torque > arm per side. Where the torque arm bolts to the axle there's a > nice flat surface area for the jack stand. This means that the tag > axle will need to be lifted so that the bump stop is pressing > against the frame rail, then the stand can be place under the tag > axle with the forces working thru the bump stop. In your opinion, > is this safe? The back end of my bus weighs 33,000 lbs, and I'm > working on a level 6" plus thick concrete floor, with tire chalks. > > Thanks, > David Brady > '02 LXi, Smokey > NC > > __________________________________________________________ > Check out the new AOL. Most comprehensive set of free safety and security tools, free access to millions of high-quality videos from across the web, free AOL Mail and more. > > > [Non-text portions of this message have been removed] > > > > > Yahoo! Groups Links > > > > > > ________________________________________________________________________ Check out the new AOL. Most comprehensive set of free safety and security tools, free access to millions of high-quality videos from across the web, free AOL Mail and more. [Non-text portions of this message have been removed] |
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02-10-2007, 00:09
Post: #12
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Jack Stands
Paul. Your explanation is crystal clear. Thanks for taking
the time. Best regards, David Brady '02 LXi, Smokey NC PRWillms@... wrote: > Hi David, > Youââ¬â¢re welcome. I use 2 methods. First if my jacks are working on the coach I will ground the front and raise it about 4 in. so there is a very stable front. I then use 2X12 laminate planks cut square I got from a building scrap pile. I stack them to make about 8 in. I then run the coach jacks up to full. Be careful now that the coach is up. I will then be able to use a regular floor jack at the axle. When you use a jack on the drive axle you can place it on any stable area. I will usually jack the one side up with the floor jack and then place the stand on the axle. Then repeat on the other side. The stands are for safety not holding the coach if the coach jacks inadvertently lowers. With this config I can pull the tires, the hub with the brake drum attached or any other thing in the back with safety. > > The second way is to get a 20 ton piston jack. They are about 10 in high and 6 in round. The lift pad has a screw that you can use to adjust up to the axle housing then jack it up. I have both jacks and depending on the job is how I determine which method I use. > Please note: that when you are dealing with so much weight you have to support the base of everything. I have also 12X12in Diamond plate that is 1/4 in thick. I place the coach jacks foot on that with the wood under it. > I don't know if you have had your jacks down on asphalt but you sink in. Another trick to save the tires. For longer term parking on cement or asphalt get the plastic cutting board the kind that you can roll. Put under the tires. The cement will leach out the oils in the tire and age them. > FYI: The 40' 88 XXV has a gross weight of 45,000. That is how I run. > > > Have fun learning about the coach. > Paul Williams 88XXV 8V92 > > > -----Original Message----- > From: dmb993@... > To: WanderlodgeForum@yahoogroups.com > Sent: Sat, 10 Feb 2007 2:43 AM > Subject: Re: [WanderlodgeForum] Jack stands > > Thanks Paul, > > Your advice is a great help and makes sense. After all, > the drive axle does support the entire weight of the rear > of the coach when the air is dumped from the Tag. How > do you jack up the drive axle? Where do you place the > jack - on the differential pumpkin? What kind of jack > or jacks do you use? > > Thanks, > David Brady > '02 LXi, Smokey > NC > > PRWillms@... wrote: > > Hi Dave, DO NOT support your coach with you tag. It is only rated at 10,000 lbs only!! Use the side frame that is part of the solid frame. Or what I do is use my leveling jacks to lighten the weight on the axle then jack up the axel to place the stands. Using 2 each 20,000# stands should be fine. Remember you are not supporting the whole weight of the coach. Rull of thumb, Use the stand rated at or higher then what the drive axel is rated for and only use 2 at a time. > > Good luck, > > > > > > Paul Williams 88XXV 8V92 > > In South Lake Tahoe > > -----Original Message----- > > From: dmb993@... > > To: wanderlodge@yahoogroups.com; WanderlodgeForum@yahoogroups.com > > Sent: Fri, 9 Feb 2007 9:47 PM > > Subject: [WanderlodgeForum] Jack stands > > > > Folks, > > > > I need to do some work under my bus. I bought a pair of 20 > > ton OTC jack stands and plan to use my HWH jacks to jack > > the rear of the bus and the OTC jack stands to support it once > > lifted. I read the file "working safely under your bus" and note > > that the jack stands need to be positioned under the frame rails > > or under the axles. Is it reasonable to place the jack stands under > > the tag axle. My LXi has a tag axle that's supported by a torque > > arm per side. Where the torque arm bolts to the axle there's a > > nice flat surface area for the jack stand. This means that the tag > > axle will need to be lifted so that the bump stop is pressing > > against the frame rail, then the stand can be place under the tag > > axle with the forces working thru the bump stop. In your opinion, > > is this safe? The back end of my bus weighs 33,000 lbs, and I'm > > working on a level 6" plus thick concrete floor, with tire chalks. > > > > Thanks, > > David Brady > > '02 LXi, Smokey > > NC > > > > __________________________________________________________ > > Check out the new AOL. Most comprehensive set of free safety and security tools, free access to millions of high-quality videos from across the web, free AOL Mail and more. > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > ________________________________________________________________________ > Check out the new AOL. Most comprehensive set of free safety and security tools, free access to millions of high-quality videos from across the web, free AOL Mail and more. > > > [Non-text portions of this message have been removed] > > > > > Yahoo! Groups Links > > > > > > |
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02-10-2007, 00:57
Post: #13
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Jack Stands
David, I always slide an old steel wheel under somthing low and solid
as a landing point. I also drop the HWH but do not put weight on them. ( I allow Jack stands to take the load. GregoryO'Connor --- In WanderlodgeForum@yahoogroups.com, David Brady wrote: > > Folks, > > I need to do some work under my bus. I bought a pair of 20 > ton OTC jack stands and plan to use my HWH jacks to jack > the rear of the bus and the OTC jack stands to support it once > lifted. I read the file "working safely under your bus" and note > that the jack stands need to be positioned under the frame rails > or under the axles. Is it reasonable to place the jack stands under > the tag axle. My LXi has a tag axle that's supported by a torque > arm per side. Where the torque arm bolts to the axle there's a > nice flat surface area for the jack stand. This means that the tag > axle will need to be lifted so that the bump stop is pressing > against the frame rail, then the stand can be place under the tag > axle with the forces working thru the bump stop. In your opinion, > is this safe? The back end of my bus weighs 33,000 lbs, and I'm > working on a level 6" plus thick concrete floor, with tire chalks. > > Thanks, > David Brady > '02 LXi, Smokey > NC > |
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02-10-2007, 10:17
Post: #14
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Jack Stands
Gregory,
I agree that the jack stands should take the load. If they are not in contact with the frame and the jack fails, the coach will drop onto the stands. The inertia could far exceed the jack stands rateing. Also, the sudden change in attitude could cause the coach to rock to one side or the other. I wouldn't want to be under it when that happened. Also, by putting the weight on the jack stands you are assured of the stability before going under. And like you said, something extra like that steel rim just in case. Another note, jack stand pairs can be rated at 20k when actually each is only 10k. Be sure of what yours really are. Gardner 78FC33 --- In WanderlodgeForum@yahoogroups.com, "Gregory OConnor" > > David, I always slide an old steel wheel under somthing low and solid > as a landing point. I also drop the HWH but do not put weight on > them. ( I allow Jack stands to take the load. > GregoryO'Connor > > --- In WanderlodgeForum@yahoogroups.com, David Brady > wrote: > > > > Folks, > > > > I need to do some work under my bus. I bought a pair of 20 > > ton OTC jack stands and plan to use my HWH jacks to jack > > the rear of the bus and the OTC jack stands to support it once > > lifted. I read the file "working safely under your bus" and note > > that the jack stands need to be positioned under the frame rails > > or under the axles. Is it reasonable to place the jack stands under > > the tag axle. My LXi has a tag axle that's supported by a torque > > arm per side. Where the torque arm bolts to the axle there's a > > nice flat surface area for the jack stand. This means that the tag > > axle will need to be lifted so that the bump stop is pressing > > against the frame rail, then the stand can be place under the tag > > axle with the forces working thru the bump stop. In your opinion, > > is this safe? The back end of my bus weighs 33,000 lbs, and I'm > > working on a level 6" plus thick concrete floor, with tire chalks. > > > > Thanks, > > David Brady > > '02 LXi, Smokey > > NC > > > |
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02-11-2007, 15:43
Post: #15
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Jack Stands
I use jack stands all the time for lighter vehicles and equipment but
not when it comes to the 'Bird. For the bird I use large blocks of wood such as old beams, tree trunks, railroad ties, etc. I don't trust manufactured jack stands near their rated load because the metal is machine formed, pressed and welded. Wood has been supporting heavy loads for a long time and I trust it with my life. Think about the kind of loads a railroad tie sees over the course of it's life. 83' FC35 SB 84' FC35 SB (currently being parted out) Houston, TX M Thomas Eastham http://www.houstonheavy.com 713-851-9693 thomase@... [Non-text portions of this message have been removed] |
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02-11-2007, 17:05
Post: #16
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Jack Stands
M Thomas, the only problem with wood is splitting. If you notice the
wood that the crane operators us it is engineered or gluelam. the wood has layers or plys with the grains going in cross directions. GregoryO'Connor 94ptRomolandca --- In WanderlodgeForum@yahoogroups.com, M Thomas Eastham > > I use jack stands all the time for lighter vehicles and equipment but > not when it comes to the 'Bird. For the bird I use large blocks of > wood such as old beams, tree trunks, railroad ties, etc. I don't > trust manufactured jack stands near their rated load because the > metal is machine formed, pressed and welded. Wood has been > supporting heavy loads for a long time and I trust it with my life. > Think about the kind of loads a railroad tie sees over the course of > it's life. > > 83' FC35 SB > 84' FC35 SB (currently being parted out) > Houston, TX > M Thomas Eastham > http://www.houstonheavy.com > 713-851-9693 > thomase@... > > > > > > [Non-text portions of this message have been removed] > |
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