Technical assistance

problem	possible reason	solution
high steering effort in both directions	low fluid level	you are more than likely have a leak, fix it and add the corresponding amount of fluid
	loose belt / wear of the pulley / wear of the belt	adjust belt tension / replace the pulley / replace the belt
	air entrapment	replace the seals and the oil lines
	low pressure/ insufficient pump capability	replace the pump
	clogged system filter	replace the filter
	wear of the spool valve body/hydroisolation of the spool valve/piston ring of the steering rack	repair/replace of the steering unit
	wear of the steering rack body	repair/replace of the steering unit
high steering effort (central position of the steering wheel)	wear of the steering rack cylinder body	repair/replace of the steering unit
high steering effort in one direction	wear of the spool valve body/hydroisolation of the spool valve	repair/replace of the steering unit
high steering effort at quick turning	loose belt / wear of the pulley / wear of the belt	adjust belt tension / replace the pulley / replace the belt
	Air entrapment	Replace the seals and the oil lines
	low pressure/ insufficient pump capability	replace the pump
steering wheel does not return to the middle position (or problematic return)	running gear failure	repair
	wheel alignment problems	realignment
	U-joint wear (on the steering column shaft)	replace the U-joint
	improper adjustment / mechanical damage / wear of the steering unit	repair/replace the steering unit
loose steering (the car is "floating" on the road)	improper adjustment / mechanical damage / wear of the steering unit	repair/replace the steering unit
	low fluid level	fix the leak and add the corresponding amount of fluid
	ear of the running gear details	replace the worn details
	U-joint wear (on the steering column shaft)	replace the U-joints
	air entrapment	replace the seals and the oil lines
a loud knocking sound when you turn the steering wheel	air entrapment	replace the seals and the oil lines
	U-joint wear (on the steering column shaft)	replace the U-joints
	improper adjustment / mechanical damage / wear of the steering unit	repair/replace the steering unit
	wear of the running gear details	replace the worn details
vibration of the steering wheel when the vehicle is in motion	wheel balance problems	wheel balance
	wheel alignment problems	realignment
steering wheel play	wear of the running gear details	replace the worn details
	U-joint wear (on the steering column shaft)	replace the U-joints
	improper adjustment / mechanical damage / wear of the steering unit	repair/replace the steering unit
self movement of the steering wheel	spool valve adjustment problems	repair/replace the steering unit
loud whining noise	air entrapment	replace the seals and the oil lines
	clogged system filter	replace the filter
	oil line deformation	replace the oil line
	low pressure / insufficient pump capability	replace the pump
	low fluid level	fix the leak and add fluid
constant loss of hydraulic fluid	wear of the steering rack seals or the pump	repair/replace the faulty unit
constant loss of hydraulic fluid	depressurization of the oil line connections	replace the seals