Bleeding New Pwr Steering Pump & Rack '85
Thread Starter
Le Mans Master
Joined: Jul 2001
Posts: 6,252
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From: Silicon Valley Kalifornia
Bleeding New Pwr Steering Pump & Rack '85
I'm installing a new power steering pump and rack in my 85. What is the bleeding procedure? Any "do not do's" to avoid? TIA 
Drifting
Joined: Aug 2000
Posts: 1,521
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From: West Islip New York
If I remember you'll need to lift the front end and with the system fully filled with fliud, engine running slowly turn the wheels almost to lock one way and then almost to lock the other. Repeat as required.
This should purge any air in the system.
This should purge any air in the system.
Team Owner
Joined: Dec 1999
Posts: 34,873
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From: Lacey WA RVN 68-69
NCM Sinkhole Donor
Fill the reservoir full and start the motor and let it run for about 5 seconds and then shut off. Refill the reservoir, start the motor again and turn the steering wheel slowly lock to lock. Shut the engine off again.
Refill the reservoir and repeat until the noise and jerkiness stops. The fluid will show bubbles from fluid cavitation as the system fills but the air bubbles will disappear after a few hours. Check the fluid level at that time and top off as necessary.
You will need to pull the front swaybar first. The service manual says to remove the tie rod ends before loosening the rack. Make sure you use a tie rod puller.
Refill the reservoir and repeat until the noise and jerkiness stops. The fluid will show bubbles from fluid cavitation as the system fills but the air bubbles will disappear after a few hours. Check the fluid level at that time and top off as necessary.
You will need to pull the front swaybar first. The service manual says to remove the tie rod ends before loosening the rack. Make sure you use a tie rod puller.
Elite Torch Red Member
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From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
Cental/South NJ Events Coordinator
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St. Jude Donor '03-'04-'05-'06-'07
Not sure for the early ones, but the later C4's call for 20 turns lock to lock. There should be no bubbles present.
I recall the procedure being: filling the res, jacking the front end up, turning the wheel lock to lock 20 times(40 if you have a P/S cooler) and someone monitoring the res and keeping it full(to the cold level).
I recall the procedure being: filling the res, jacking the front end up, turning the wheel lock to lock 20 times(40 if you have a P/S cooler) and someone monitoring the res and keeping it full(to the cold level).
Elite Torch Red Member
Joined: Sep 1999
Posts: 57,805
Likes: 23
From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
Cental/South NJ Events Coordinator
CI 1-2-3-4-5-6-7-8-9-10-11-12 Vet
CI-II Burnout & Drag Champ
St. Jude Donor '03-'04-'05-'06-'07
Just high enough so the wheels are off the ground
Pro
Joined: Nov 2004
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From: Long Island NY
Originally Posted by Mr Mojo
Not sure for the early ones, but the later C4's call for 20 turns lock to lock. There should be no bubbles present.
I recall the procedure being: filling the res, jacking the front end up, turning the wheel lock to lock 20 times(40 if you have a P/S cooler) and someone monitoring the res and keeping it full(to the cold level).
I recall the procedure being: filling the res, jacking the front end up, turning the wheel lock to lock 20 times(40 if you have a P/S cooler) and someone monitoring the res and keeping it full(to the cold level).
Elite Torch Red Member
Joined: Sep 1999
Posts: 57,805
Likes: 23
From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
Cental/South NJ Events Coordinator
CI 1-2-3-4-5-6-7-8-9-10-11-12 Vet
CI-II Burnout & Drag Champ
St. Jude Donor '03-'04-'05-'06-'07
Originally Posted by artvette
20 turns lock to lock? What handling package does that come with? The ZGMYARMSTIRED51 Package? I'm glad I have an older model cause it must take an awful long time to turn a corner with that ratio!
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Thread Starter
Le Mans Master
Joined: Jul 2001
Posts: 6,252
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From: Silicon Valley Kalifornia
Originally Posted by artvette
20 turns lock to lock? What handling package does that come with? The ZGMYARMSTIRED51 Package? I'm glad I have an older model cause it must take an awful long time to turn a corner with that ratio!
Race Director
Joined: Sep 2000
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From: The Top of Utah
Originally Posted by GRX
No, I think Mr.Mojo means ...turn wheel lock-to-lock 20 TIMES....
Originally Posted by GRX
Are you sure the front end needs to be jacked up? If so, any idea how high?
Originally Posted by Mr Mojo
Just high enough so the wheels are off the ground
RACE ON!!!
Pro
Joined: Nov 2004
Posts: 641
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From: Long Island NY
Originally Posted by Mr Mojo
ratio has nothing to do with it. Lock to lock is the same on all our cars if I'm not mistaken.
Guys, it was a joke. And no, the lock to lock is different on the Z51 cars with the faster ratio. I think about a half turn less.
