rack rebuilding or replacing?
Moderator: John Brennan
Re: rack rebuilding or replacing?
Well got it all apart, took around 30 pictures of disassembly I was not sure how many can be posted on here, I was amazed at easy it all comes apart. It appears that not all of the seals in the kit will be used and once cleaned up all the bearing looked great,clean up and paint time.
Rob
88 XR4Ti Stock, Daily Driver
88 XR4Ti Lightly Modified.
88 XR4Ti Stock, Daily Driver
88 XR4Ti Lightly Modified.
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- Level 4
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Re: rack rebuilding or replacing?
Hi Rob,
Please post as many pics as you can.
thanks
James
Please post as many pics as you can.
thanks
James
Cossy sway bar, Powerflex, Dynalites, Focus SVT rotors,Koni yellow sleeve over 8"x300lb/in springs,Scorch bumper cover, 17x7.5x40mm Binno wheels, 225/45-17 Kumho 712 tires
Re: rack rebuilding or replacing?
Starting out

Lines did not want to come out

Little o rings on lines

Removing cover


Getting as much oil as I can out of the system

Scribing lines on yoke and body

Removing yoke



Cover lid



Removing nut from rotary valve

Removing retaining rings upper and lower




Removal of rotary valve

To tired will do the rest tomorrow

Lines did not want to come out

Little o rings on lines

Removing cover


Getting as much oil as I can out of the system

Scribing lines on yoke and body

Removing yoke



Cover lid



Removing nut from rotary valve

Removing retaining rings upper and lower




Removal of rotary valve

To tired will do the rest tomorrow
Rob
88 XR4Ti Stock, Daily Driver
88 XR4Ti Lightly Modified.
88 XR4Ti Stock, Daily Driver
88 XR4Ti Lightly Modified.
Re: rack rebuilding or replacing?
Cool!! Thanks for sharing.
Mods, any interest in getting a FAQ/Picture Repository on this? I have pics of the early rack being yanked apart, but it's different enough where this would be needed for someone working on a later rack.
Mods, any interest in getting a FAQ/Picture Repository on this? I have pics of the early rack being yanked apart, but it's different enough where this would be needed for someone working on a later rack.
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- Level 4
- Posts: 472
- Joined: Sat Jun 19, 2010 8:42 am
Re: rack rebuilding or replacing?
Nice, very helpful and I'm looking forward to more. How to the bearings feel? Was there any dead center looseness in your rack?
cheers
James
cheers
James
Cossy sway bar, Powerflex, Dynalites, Focus SVT rotors,Koni yellow sleeve over 8"x300lb/in springs,Scorch bumper cover, 17x7.5x40mm Binno wheels, 225/45-17 Kumho 712 tires
Re: rack rebuilding or replacing?
From where we left off
Removing the snap ring


Pulling out the Rack and piston rod guide. It took a few tries of good hard yanking to pull it out


Removing Shaft Seal and Bearing


Removing Seal. See the seal way down in the housing


Remove rod guide from rack


Other shaft bearings you can just see the seal on the other side


piston rod guide, seal and washer


General Picture of everything Note Don't pay attention to the o rings a couple of them aer in the wrong place

Left over o rings I did find a place for the seal and the smallest 4 o rings

Removing the snap ring


Pulling out the Rack and piston rod guide. It took a few tries of good hard yanking to pull it out


Removing Shaft Seal and Bearing


Removing Seal. See the seal way down in the housing


Remove rod guide from rack


Other shaft bearings you can just see the seal on the other side


piston rod guide, seal and washer


General Picture of everything Note Don't pay attention to the o rings a couple of them aer in the wrong place

Left over o rings I did find a place for the seal and the smallest 4 o rings

Bearing all great but i did find the drivers side housing does not have a seal so if the bellow is missing or torn dirt sand rock you name it can get the grease and shaft gears and make it (for lack of better words) feel weird. Steering over all was great.James Wieler wrote:Nice, very helpful and I'm looking forward to more. How to the bearings feel? Was there any dead center looseness in your rack?
cheers
James
Rob
88 XR4Ti Stock, Daily Driver
88 XR4Ti Lightly Modified.
88 XR4Ti Stock, Daily Driver
88 XR4Ti Lightly Modified.
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- Level 4
- Posts: 472
- Joined: Sat Jun 19, 2010 8:42 am
Re: rack rebuilding or replacing?
More nice pics and great description.
Can you clean the rust off of the piston rod guide with emory cloth or is it an issue?
Can you clean the rust off of the piston rod guide with emory cloth or is it an issue?
Cossy sway bar, Powerflex, Dynalites, Focus SVT rotors,Koni yellow sleeve over 8"x300lb/in springs,Scorch bumper cover, 17x7.5x40mm Binno wheels, 225/45-17 Kumho 712 tires
Re: rack rebuilding or replacing?
I think I am going to use a 320 grain emery cloth to clean up a few of the rusty places, I also blasted the aluminum housing with walnut shells to remove all the years of corrosion build up turned out pretty nice.James Wieler wrote:More nice pics and great description.
Can you clean the rust off of the piston rod guide with emory cloth or is it an issue?
Rob
88 XR4Ti Stock, Daily Driver
88 XR4Ti Lightly Modified.
88 XR4Ti Stock, Daily Driver
88 XR4Ti Lightly Modified.
-
- Level 4
- Posts: 472
- Joined: Sat Jun 19, 2010 8:42 am
Re: rack rebuilding or replacing?
sounds like you are ready for re-assembly, can't wait for more pics of that
Cossy sway bar, Powerflex, Dynalites, Focus SVT rotors,Koni yellow sleeve over 8"x300lb/in springs,Scorch bumper cover, 17x7.5x40mm Binno wheels, 225/45-17 Kumho 712 tires
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- Level 4
- Posts: 472
- Joined: Sat Jun 19, 2010 8:42 am
Re: rack rebuilding or replacing?
looks like you had an instruction manual, where did you get it from?
Cossy sway bar, Powerflex, Dynalites, Focus SVT rotors,Koni yellow sleeve over 8"x300lb/in springs,Scorch bumper cover, 17x7.5x40mm Binno wheels, 225/45-17 Kumho 712 tires
Re: rack rebuilding or replacing?
I searched the web for a few days and happened to come across this web site http://forum.bmwland.ru/index.php?act=a ... t&id=26966 it has all the instructions for our zf rack plus 3 others. I printed it out punched holes in the paper and put it in a 3 ring binder. I printed it because going back and forth between the pages takes to long on the computer.James Wieler wrote:looks like you had an instruction manual, where did you get it from?
Rob
88 XR4Ti Stock, Daily Driver
88 XR4Ti Lightly Modified.
88 XR4Ti Stock, Daily Driver
88 XR4Ti Lightly Modified.
-
- Level 4
- Posts: 472
- Joined: Sat Jun 19, 2010 8:42 am
Re: rack rebuilding or replacing?
which version do we have?
Cossy sway bar, Powerflex, Dynalites, Focus SVT rotors,Koni yellow sleeve over 8"x300lb/in springs,Scorch bumper cover, 17x7.5x40mm Binno wheels, 225/45-17 Kumho 712 tires
Re: rack rebuilding or replacing?
Our rack type is 7831 955 111James Wieler wrote:which version do we have?
Rob
88 XR4Ti Stock, Daily Driver
88 XR4Ti Lightly Modified.
88 XR4Ti Stock, Daily Driver
88 XR4Ti Lightly Modified.
-
- Level 4
- Posts: 472
- Joined: Sat Jun 19, 2010 8:42 am
Re: rack rebuilding or replacing?
I took my rack out this evening, I think I'm screwed as there is some major pitting on the rack gears. The rack worked great (except for the leaking).
What do people think?
thanks
James

What do people think?
thanks
James

Cossy sway bar, Powerflex, Dynalites, Focus SVT rotors,Koni yellow sleeve over 8"x300lb/in springs,Scorch bumper cover, 17x7.5x40mm Binno wheels, 225/45-17 Kumho 712 tires