What is the proper way to jack up and raise, block up, and level an older (1989) 38 foot park model RV trailer for a permanent installation?
I have seen it done three ways. 1) lower tongue jack as low as possible raising the rear of the trailer, block the rear of the trailer, raise tongue jack to raise front of trailer, block and level. 2)starting at one end using two jacks, jack up one end of the home, place pads/blocks, etc. and working your way from one end of the trailer to the other. 3)the other way I have seen it done is to use 3 or 4 jacks and jack up one side of the home 8" (one concrete block height) at a time, then move jacks to the other side of the home, jack that side up and block, alternating from one side of the home to the other until the desired height is reached.
With an older and weakened from age trailer, I am worried about stressing the home, possibly opening leaks in the roof, etc., so I want to be careful and get if jacked up, blocked, and leveled without excessive stress or excessive "bending" of the home so to speak from side to side or end to end.
What is the best type of jack for this purpose, auto style floor jack, bottle style hydraulic jack??
Thanks for any information.