encoder in hydraulic pump. previous work on pump seal done by "mom and pop" vendor. manually lowered with connector unplugged from pump reset. o.k. internal spline count in pump.
are the valves ok on the mast ,check the sequensing valve for damage. don,t know this truck but sounds like a hydraulic problem or is all the rollers and channels free from debris
No height sensor. Job was passed to a field service supervisor. May be that this unit is sensored in the lift pump. There is an electrical connector mounted to it. When he manually lowered it, the lift height maximum also lowered. Now were in the same boat and the lift raises to an even lower point. Will post updates on progress.
Does this have a fork height sensor? it will be on the left side upper corner, with a small belt.
If not you may have a problem in the handle or the lift limit is enabled
Lift Limit Without Override (N35ZDR, N45ZR, N30ZDR, N35-40ZR)
Use this setting to enable or disable the Lift Limit Without Override option. Setting the parameter to ON will enable the option, OFF will disable the option. The encoder hardware must be correctly installed along with the settings made for the free lift and lift limit heights. These settings can be made with ETACC.