Class a hydraulic levelers
Going to look at a class a to purchase----the owner says that it only has 3 hydraulic leveled---1 in front and 2 in back --- does this sound right?
Forum Discussion
Years ago, the 4 jack hydraulic systems, EACH jack was individually controlled and that led to some motorhomes when the RV'er over lifted one front corner, the chassis would twist and either pop out the windshield or crack it. That led to 3 point leveling made by 2 makers
1. RVA Jacks systems which were exclusive to Monaco/HR motorhomes
2. Powergear
The 3 point system allows the front single middle mount jack to raise the front and not twist the front chassis frame to cause windshield problems
There is a modified 3 point system that actually uses 4 jacks, and the 2 front jacks are connected to the same hydraulic line. When lifting the 2 front jacks lift at the same rate because they are connected to 1 HYD line and neither front corner can lift higher than the other
Then years ago. HWH came out with Bi-Axis leveling which was all touch pad controlled and the JOYSTICK(NOT 4 lever) manual control systems. This meant that at any given time 2 jacks will be lifting instead on 1. The Bi-Axis was designed to also prevent torquing either front corner of the motorhome to stop windshield problems. Preference on which system is best is up to the purchaser. Doug
1. RVA Jacks systems which were exclusive to Monaco/HR motorhomes
2. Powergear
The 3 point system allows the front single middle mount jack to raise the front and not twist the front chassis frame to cause windshield problems
There is a modified 3 point system that actually uses 4 jacks, and the 2 front jacks are connected to the same hydraulic line. When lifting the 2 front jacks lift at the same rate because they are connected to 1 HYD line and neither front corner can lift higher than the other
Then years ago. HWH came out with Bi-Axis leveling which was all touch pad controlled and the JOYSTICK(NOT 4 lever) manual control systems. This meant that at any given time 2 jacks will be lifting instead on 1. The Bi-Axis was designed to also prevent torquing either front corner of the motorhome to stop windshield problems. Preference on which system is best is up to the purchaser. Doug
