4 stage DA telescopic cylinder mis staging on retract..
Posted: Sat Nov 20, 2010 10:57 pm
Howdy,
Need help in problem solving: have a 21",4 stage, double acting, telescopic hydraulic cylinder, 56" stroke, 6" dia main body with both ports on main barrel. cylinder hooked up to a 12v DC haldex/barnes power pack with a 2 position, four way electric valve ( 2 coils on one cartridge,push & pull).
system installed on a 2008 toyota tundra dump bed made from scratch.
system extends fine, but mis stages on powered retract by first stage retracting first but for a bit and locks up.
when partially extended and retracting, first stage retracts while the other 3 smaller stages extends at the same time. When fully extended, cylinder locks during first stage retract. video & pics of problematic cylinder in action available upon forwarding your email. files too large to upload to forum. help!
Need help in problem solving: have a 21",4 stage, double acting, telescopic hydraulic cylinder, 56" stroke, 6" dia main body with both ports on main barrel. cylinder hooked up to a 12v DC haldex/barnes power pack with a 2 position, four way electric valve ( 2 coils on one cartridge,push & pull).
system installed on a 2008 toyota tundra dump bed made from scratch.
system extends fine, but mis stages on powered retract by first stage retracting first but for a bit and locks up.
when partially extended and retracting, first stage retracts while the other 3 smaller stages extends at the same time. When fully extended, cylinder locks during first stage retract. video & pics of problematic cylinder in action available upon forwarding your email. files too large to upload to forum. help!