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If a spool valve is bad on a steering rack can that be repaired or does the whole steering rack have to be changed?
Wiki User
∙ 16y ago
Generally it would be cheaper to replace the unit with a used one from a salvage yard. If the Power Steering fluid has metal particles in it the pump has failed. At this point the entire system including pump, hoses and rack should be swapped out. The reason is that you can NEVER get all the abrasives out of the Plumbing and if you replace just the spool valve contamination in the fluid will quickly destroy your repair work.
Wiki User
∙ 16y ago
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I changed out thermostat in Z71 Suburban and heater still won't get hot why?
Check for a heater flow valve in the heater hose they can rust shut easily it is a valve in the heater hose that opens when you turn on the heat and shuts when its not in use, if not then probably the core is plugged a radiator flush might help but you may need to have it cleaned and repaired.
How dangereous is a leaking valve in heart of young child?
It matters which valve is leaking, how much is leaking and the cause of the leak. It can be fatal but could be repaired depending on the condition of the valve and the particular valve affected. It is not wise the let the child to get overexerted and it is best to have a cardiologist determine all the variables involved with that particular child.
Can tricuspid Regurgitation be repaired?
Most of the time its caused because of retrograde pulmonary hypertension, so if whatever is causing it is dealt with, the tricuspid regurgitation should stop, since its a functional response and not necessarily pathological. On the other hand, if it was caused by direct damage to the tricuspid valve, then it can't be repaired and has to be replaced with a prosthesis
What is aortic valve stenosis?
A stenosed valve is a valve that has been narrowed for some reason; either by injury, scar tissue or congenital anomaly. Depending on the level of stenosis, cardiac output can be fixed (unable to be changed) and reduced.
If changed valve cover gasket set and still car doesn't start on 91 Honda accord?
Changing a valve cover gasket really has nothing to do with an engine starting or not. You need to check your power and gas for problems in starting.
What is the possible problem if power steering is good when turning left but hard when turning right?
A common reason for this to happen with front wheel drive vehicles, is the steering rack is going bad. Cold weather will aggravate it even more.This is more of an annoyance than a safety issue. Mark This is most likely caused due to a problem in your spool valve on the steering rack. It can be repaired but I'm not sure if it's legal to do so in your country - you'll probably have to replace the rack. Plain and simple ---the valve body of the steering gear is shot replace the steering box or rack as the case may be www.powerbrakeandsteering.co.za
What is a hydraulic detent valve?
A spring device which maintains the spool of a directional control valve in position.
Is the ion xe spool or poppet valve?
Spool. you can tell easily between spool and poppet, because a poppet valve has a visible bolt with a cocking lever on in, whereas spools have no external bolt. Look ate the planet eclipese EGO and the GEO and you will see what i mean.
Does a pneumatic spool valve require lubrication?
A pneumatic spool valve usually has two sets of atleast one but possibly more rubber o-rings which does indeed need lubrication to function properly.
What is a pneumatic solenoid operated spool valve?
spool valveA spool valve is a multidirectional hydraulic or pneumatic valve usually operated by a joystick. It has several hoses attached to it leading to different pneumatic rams. When the joystick is pushed in one direction, it causes the valve to shut off one of the pneumatic hoses leading to the ram and open the other. Which way the joystick is pushed moves the piston in the ram in or out. Since you specified a solenoid operated valve it is operated not by a joystick that is directly connected to the valve but rather an electric joystick like the you would use in a video game and an electrical signal is sent to activate a solenoid that does the same thing but can be much farther away from the operator. Solenoid Actuated Pneumatic Spool ValveA solenoid actuated pneumatic spool valve is a spool valve actuated by an electric solenoid. They are often used in industrial automation and are usually controlled by a PC or a PLC (Programmable Logic Controller) rather than a manual switch. To reduce the size and power consumption of the solenoid, often the solenoid does not directly actuate the spool. Instead, the solenoid actuates a small internal valve which directs upstream air pressure to move the spool. This is called an air piloted solenoid actuated pneumatic spool valve. The air pilot mechanism typically requires about 40 PSI to operate reliably. If the air pressure upstream of the valve is going to be less than 40 PSI, the valve must be externally piloted, meaning that the pilot is connected to a separate air source which is above 40 PSI.
Arms wont lift up or down on Bobcat 873?
this can be caused by a number of things * low oil level *damaged hydraulic pump *sticking or spool valve *worn valve body *damaged anticavity solenoid valve *damaged lift spool lock solenoid
Can a bicuspid aortic valve cause a heart attack?
Yes, a bicuspid aortic valve can be repaired if it is diseased. The procedure usually involves a small incision and the valve will either be repaired, or more often, replaced with a synthetic valve.
Why would the power steering work good on left turns but not on right turns?
If a rack could be air in system Could be steering rack going bad losing pressure What type of unit is this? I have a masey tractor that gets out of adjustment and will turn beter one way. but if it is a car i would look for an obstruction,or linkage that is bound. == What vehicle is this in? On some older British and American cars, they had adjustable spool valves which had to be centralized or this problem would arise. If it is a newer vehicle, it sounds as though you still have a problem with the spool valve in the steering rack. Could be a broken teflon ring, blocked ports in the valve (they are tiny). www.powerbrakeandsteering.co.za
How the power steering mechanism works?
Power Steering There are a couple of key components in power steering in addition to the rack-and-pinion or recirculating-ball mechanism.PumpThe hydraulic power for the steering is provided by a rotary-vane pump (see diagram below). This pump is driven by the car's engine via a belt and pulley. It contains a set of retractable vanes that spin inside an oval chamber.As the vanes spin, they pull hydraulic fluid from the return line at low pressure and force it into the outlet at high pressure. The amount of flow provided by the pump depends on the car's engine speed. The pump must be designed to provide adequate flow when the engine is idling. As a result, the pump moves much more fluid than necessary when the engine is running at faster speeds.The pump contains a pressure-relief valve to make sure that the pressure does not get too high, especially at high engine speeds when so much fluid is being pumped.Rotary ValveA power-steering system should assist the driver only when he is exerting force on the steering wheel (such as when starting a turn). When the driver is not exerting force (such as when driving in a straight line), the system shouldn't provide any assist. The device that senses the force on the steering wheel is called the rotary valve.The key to the rotary valve is a torsion bar. The torsion bar is a thin rod of metal that twists when torque is applied to it. The top of the bar is connected to the steering wheel, and the bottom of the bar is connected to the pinion or worm gear (which turns the wheels), so the amount of torque in the torsion bar is equal to the amount of torque the driver is using to turn the wheels. The more torque the driver uses to turn the wheels, the more the bar twists.The input from the steering shaft forms the inner part of a spool-valve assembly. It also connects to the top end of the torsion bar. The bottom of the torsion bar connects to the outer part of the spool valve. The torsion bar also turns the output of the steering gear, connecting to either the pinion gear or the worm gear depending on which type of steering the car has.As the bar twists, it rotates the inside of the spool valve relative to the outside. Since the inner part of the spool valve is also connected to the steering shaft (and therefore to the steering wheel), the amount of rotation between the inner and outer parts of the spool valve depends on how much torque the driver applies to the steering wheel.Animation showing what happens inside the rotary valve when you first start to turn the steering wheelWhen the steering wheel is not being turned, both hydraulic lines provide the same amount of pressure to the steering gear. But if the spool valve is turned one way or the other, ports open up to provide high-pressure fluid to the appropriate line.It turns out that this type of power-steering system is pretty inefficient. Let's take a look at some advances we'll see in coming years that will help improve efficiency.
What does a modulator spool in a transmission?
If you are asking the function of a modulater valve,it is to smooth out the shifts in an automatic transmission.
Where is the power steering bleed valve located at on a 2007 Chevrolet Impala?
It doesn't have a bleed valve for the power steering.
Your 1999 Mercury sable will not shift into overdrive on the highway what could be causing this?
MY 98 HAD A BROKEN CLIP ON FORWARD CLUTCH VALVE SPOOL IN VALVE BODY
