rack solenoid filter removal
10-12-04, 12:15 AM
#1
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rack solenoid filter removal
There are numerous posts on how the filter screen on the first gen. LS should be cleaned. This filter screen is attached to the rack as per the posts. However there are no pictures that would help pinpoint the location neither any steps as to how to remove it.
could someone please post either the pic or a quick DIY on how to do this.
symptoms: hard steering at slow speeds.
recommendations as per clublexus posts: removal and cleaning of the filter screen.
thnx.
could someone please post either the pic or a quick DIY on how to do this.
symptoms: hard steering at slow speeds.
recommendations as per clublexus posts: removal and cleaning of the filter screen.
thnx.
10-13-04, 01:20 PM
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10-18-04, 04:14 PM
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the mech. was dumbfounded by my request.
i guess i'll have to tackle this on my own. i searched by didnt find any pics for the location.
does anyone have any pics they can post for this ?
i guess i'll have to tackle this on my own. i searched by didnt find any pics for the location.
does anyone have any pics they can post for this ?
10-19-04, 10:20 AM
#6
Rack solenoid/screen
A fellow by the name of DevilDogIS300 answered this one a few months ago.
I will copy the post for you. Also, did you do a COMPLETE replacement of the fluid as per the manual. Not just add some fluid'. I am ASSUMING your filter is clogged, give it a try.
I just copied the correspondence for you. Think you can get the gist of it. Good luck
The thread read as follows for a LS400:
It's a great idea to flush that power steering system out every 45k. The fluid always gets that way on Lexus vehicles. I have never used synthetic pwr str fluid before, no comments on that. Two suggestions: 1. When the fluid is drained, look inside the fluid reservoir with a small flash light. There is a metal screen at the bottom that will become clogged with particles. If so, you can either remove the fluid reservoir and try to clean it with brake cleaner. Or take a long philips head screw driver and simply poke a small hole in the center of if. That will helps circulation of the fluid. 2. Remove the solenoid on the rack and pinion. It also has a screen that must be cleaned. I have seen so many of them clogged. It's a plastic screen and can be sprayed with brake clean as well.
The pressure control valve does have three bolts. It is a large valve that has two wires coming from it. The valve it's self faces down and must be tapped off with a screw driver
To get to the solenoid screen the entire solenoid must be removed. Unplug
the wire connector first, if you look at the base of the solenoid it looks
like you need a huge wrench to remove it. I simply tap it with a large
screwdriver and a hammer right on the edge where the wrench would go. Once
you get it started you can remove it by hand. Watch for an o-ring on the
rack and one on the solenoid. The one on the rack could fall off, simply put
it back on. I don't think you'll need an additional filter, just something
else to clean later. After you remove all the fluid and clean the screens be
sure to top off the fluid before you start the car. Then when you start the
car be ready to immediately add more fluid. It is normal for the pump to
make a whine noise for a while. That's just air in the system. If you do get
allot of air in the system then simply turn off the car, leave the reservoir
cap off, and let the car sit for about two hours. The air will rise to the
top. With regard to the reservoir screen, if you don't feel comfortable
removing it then I would just poke a small hole in it. The solenoid screen
will catch allot junk before it gets to the rack.
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I will copy the post for you. Also, did you do a COMPLETE replacement of the fluid as per the manual. Not just add some fluid'. I am ASSUMING your filter is clogged, give it a try.
I just copied the correspondence for you. Think you can get the gist of it. Good luck
The thread read as follows for a LS400:
It's a great idea to flush that power steering system out every 45k. The fluid always gets that way on Lexus vehicles. I have never used synthetic pwr str fluid before, no comments on that. Two suggestions: 1. When the fluid is drained, look inside the fluid reservoir with a small flash light. There is a metal screen at the bottom that will become clogged with particles. If so, you can either remove the fluid reservoir and try to clean it with brake cleaner. Or take a long philips head screw driver and simply poke a small hole in the center of if. That will helps circulation of the fluid. 2. Remove the solenoid on the rack and pinion. It also has a screen that must be cleaned. I have seen so many of them clogged. It's a plastic screen and can be sprayed with brake clean as well.
The pressure control valve does have three bolts. It is a large valve that has two wires coming from it. The valve it's self faces down and must be tapped off with a screw driver
To get to the solenoid screen the entire solenoid must be removed. Unplug
the wire connector first, if you look at the base of the solenoid it looks
like you need a huge wrench to remove it. I simply tap it with a large
screwdriver and a hammer right on the edge where the wrench would go. Once
you get it started you can remove it by hand. Watch for an o-ring on the
rack and one on the solenoid. The one on the rack could fall off, simply put
it back on. I don't think you'll need an additional filter, just something
else to clean later. After you remove all the fluid and clean the screens be
sure to top off the fluid before you start the car. Then when you start the
car be ready to immediately add more fluid. It is normal for the pump to
make a whine noise for a while. That's just air in the system. If you do get
allot of air in the system then simply turn off the car, leave the reservoir
cap off, and let the car sit for about two hours. The air will rise to the
top. With regard to the reservoir screen, if you don't feel comfortable
removing it then I would just poke a small hole in it. The solenoid screen
will catch allot junk before it gets to the rack.
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2000hamza (10-29-22)
10-24-04, 10:18 PM
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I wanted to bleed the power steering system as per the threads here. and while moving the steering wheel from turn to turn, i noticed that the power steering is considerably easier to move if i push on the gas a little moving the tach above 1000rpm versus the 800rpm that the car idles at.
is this a sign of something ?
is this a sign of something ?
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11-12-04, 03:59 PM
#10
I will try & post pictures.
The part I have , and the only part I have seen , has only 1 filter. It resides on the end of the solenoid or the electrical pump portion of the Power Steering Control Valve assembly.
Since this used part was not mounted to a rack , I was able to use a bench vice & a dead-soft hammer to loosen the solenoid itself from the proportioning valve section.
more to come.
The part I have , and the only part I have seen , has only 1 filter. It resides on the end of the solenoid or the electrical pump portion of the Power Steering Control Valve assembly.
Since this used part was not mounted to a rack , I was able to use a bench vice & a dead-soft hammer to loosen the solenoid itself from the proportioning valve section.
more to come.
Last edited by damon; 11-14-04 at 05:54 PM.
11-12-04, 04:42 PM
#11
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that's great. now let me ask you this, what prompted you to change this part ?
did you try going the route of cleaning the filter first that's part of the solenoid ? did cleaning the filter result in any changes in power steering ?
what are the symptoms that you're experiencing with the power steering at the moment ?
did you try going the route of cleaning the filter first that's part of the solenoid ? did cleaning the filter result in any changes in power steering ?
what are the symptoms that you're experiencing with the power steering at the moment ?
11-13-04, 02:50 AM
#12
Have a "fleet" of 3 LS 400 's so my quest was more for knowledge than out of need.
My daily driver, a 94LS, has it's original PS pump at 163,000+ miles.
I had the fluid flushed at 139,009 due to an increase in noise. This seemingly worked fine , but the noise is picking up again so I'm trying to head it off at the pass.
The one synthetic filter I have found so far is so small that I can't imagine that a flush actually cleaned the screen.
A solenoid is a very expensive item from a dealer, for $35.00 I calculated it as a worthwhile risk to learn the system & have a spare on hand if needed. This is of course is assuming that the electrical pump portion of the part I purchased actually works!
I have a used PS hose from Pops 90 LS that I'm thinking about having rebuilt with the addition of an inline filter.
Just a thought!
damon
My daily driver, a 94LS, has it's original PS pump at 163,000+ miles.
I had the fluid flushed at 139,009 due to an increase in noise. This seemingly worked fine , but the noise is picking up again so I'm trying to head it off at the pass.
The one synthetic filter I have found so far is so small that I can't imagine that a flush actually cleaned the screen.
A solenoid is a very expensive item from a dealer, for $35.00 I calculated it as a worthwhile risk to learn the system & have a spare on hand if needed. This is of course is assuming that the electrical pump portion of the part I purchased actually works!
I have a used PS hose from Pops 90 LS that I'm thinking about having rebuilt with the addition of an inline filter.
Just a thought!
damon
11-14-04, 08:57 PM
#14
Filter in the above pic is the white circular ring on the black portion of the solenoid that screws into the control valve.
I do not know if there is a screen on the ps fluid input side ( not-visible in photo ) of the valve. I can see where an o-ring was seated against it.
damon
I do not know if there is a screen on the ps fluid input side ( not-visible in photo ) of the valve. I can see where an o-ring was seated against it.
damon
10-29-22, 11:27 PM
#15
Thank you it worked
A fellow by the name of DevilDogIS300 answered this one a few months ago.
I will copy the post for you. Also, did you do a COMPLETE replacement of the fluid as per the manual. Not just add some fluid'. I am ASSUMING your filter is clogged, give it a try.
I just copied the correspondence for you. Think you can get the gist of it. Good luck
The thread read as follows for a LS400:
It's a great idea to flush that power steering system out every 45k. The fluid always gets that way on Lexus vehicles. I have never used synthetic pwr str fluid before, no comments on that. Two suggestions: 1. When the fluid is drained, look inside the fluid reservoir with a small flash light. There is a metal screen at the bottom that will become clogged with particles. If so, you can either remove the fluid reservoir and try to clean it with brake cleaner. Or take a long philips head screw driver and simply poke a small hole in the center of if. That will helps circulation of the fluid. 2. Remove the solenoid on the rack and pinion. It also has a screen that must be cleaned. I have seen so many of them clogged. It's a plastic screen and can be sprayed with brake clean as well.
The pressure control valve does have three bolts. It is a large valve that has two wires coming from it. The valve it's self faces down and must be tapped off with a screw driver
To get to the solenoid screen the entire solenoid must be removed. Unplug
the wire connector first, if you look at the base of the solenoid it looks
like you need a huge wrench to remove it. I simply tap it with a large
screwdriver and a hammer right on the edge where the wrench would go. Once
you get it started you can remove it by hand. Watch for an o-ring on the
rack and one on the solenoid. The one on the rack could fall off, simply put
it back on. I don't think you'll need an additional filter, just something
else to clean later. After you remove all the fluid and clean the screens be
sure to top off the fluid before you start the car. Then when you start the
car be ready to immediately add more fluid. It is normal for the pump to
make a whine noise for a while. That's just air in the system. If you do get
allot of air in the system then simply turn off the car, leave the reservoir
cap off, and let the car sit for about two hours. The air will rise to the
top. With regard to the reservoir screen, if you don't feel comfortable
removing it then I would just poke a small hole in it. The solenoid screen
will catch allot junk before it gets to the rack.
Report this post to a moderator | IP: Logged
I will copy the post for you. Also, did you do a COMPLETE replacement of the fluid as per the manual. Not just add some fluid'. I am ASSUMING your filter is clogged, give it a try.
I just copied the correspondence for you. Think you can get the gist of it. Good luck
The thread read as follows for a LS400:
It's a great idea to flush that power steering system out every 45k. The fluid always gets that way on Lexus vehicles. I have never used synthetic pwr str fluid before, no comments on that. Two suggestions: 1. When the fluid is drained, look inside the fluid reservoir with a small flash light. There is a metal screen at the bottom that will become clogged with particles. If so, you can either remove the fluid reservoir and try to clean it with brake cleaner. Or take a long philips head screw driver and simply poke a small hole in the center of if. That will helps circulation of the fluid. 2. Remove the solenoid on the rack and pinion. It also has a screen that must be cleaned. I have seen so many of them clogged. It's a plastic screen and can be sprayed with brake clean as well.
The pressure control valve does have three bolts. It is a large valve that has two wires coming from it. The valve it's self faces down and must be tapped off with a screw driver
To get to the solenoid screen the entire solenoid must be removed. Unplug
the wire connector first, if you look at the base of the solenoid it looks
like you need a huge wrench to remove it. I simply tap it with a large
screwdriver and a hammer right on the edge where the wrench would go. Once
you get it started you can remove it by hand. Watch for an o-ring on the
rack and one on the solenoid. The one on the rack could fall off, simply put
it back on. I don't think you'll need an additional filter, just something
else to clean later. After you remove all the fluid and clean the screens be
sure to top off the fluid before you start the car. Then when you start the
car be ready to immediately add more fluid. It is normal for the pump to
make a whine noise for a while. That's just air in the system. If you do get
allot of air in the system then simply turn off the car, leave the reservoir
cap off, and let the car sit for about two hours. The air will rise to the
top. With regard to the reservoir screen, if you don't feel comfortable
removing it then I would just poke a small hole in it. The solenoid screen
will catch allot junk before it gets to the rack.
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