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2000 S80 T6 Steering rack (SMI speed sens)

Everything on the Volvo S80. Sometimes called an "executive car", the S80 was Volvo's top-of-the-line passenger car. P2 platform.
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MyS40T4
Posts: 73
Joined: 2 August 2010
Year and Model: S80 T6 2000
Location: Australia
Been thanked: 1 time

2000 S80 T6 Steering rack (SMI speed sens)

Post by MyS40T4 »

I've pulled out the steering rack as it was leaking and have found that there is quite bad pitting on the rack. There were some small holes in one of the boots on the top side so water could get in but not out.
I think the rack must have been immersed in water given the amount of corrosion.

This is after giving it a clean with fine emery paper:
IMG_1623.JPG
This is the opposite side with no cleaning:
IMG_1624.JPG
The dust seal on the pinion is like sticky tar:
IMG_1625.JPG
Part number for RHD car:
IMG_1626.JPG
Awesome - looks like I'll need a replacement rack and there are bugger all s/h parts in my locality...

A silly question perhaps, but does anyone know if the LHD rack is different to the RHD? (EDIT - Answerinf my own question, yes not even close...)

There don't even seem to be seal kits for these available...

MyS40T4
Posts: 73
Joined: 2 August 2010
Year and Model: S80 T6 2000
Location: Australia
Been thanked: 1 time

Post by MyS40T4 »

I ended up sourcing a non-speed sensitive SMI rack off a S60/V70 with the idea of switching the pinion assembly off my rack with the rack I'd bought. After dismantling and cleaning the 'new' rack, I decided to just fit it as it was without the speed sensitivity. Presumably all the speed sensitivity does is reduces the power assistance at speed?

Here's a pic showing the difference in the pinion assemblies (left hand one has machining for speed sensitivity solenoid):
IMG_1642.JPG
New steering rack shaft is marginally longer than original S80 one (about 2cm overall):
IMG_1643.JPG
Note the different length rack stops (which partially compensates for additional length - shorter yellow one is S80):
IMG_1641.JPG
Vast difference in condition of the rack shaft (S80 one is heavily pitted):
IMG_1645.JPG
Finally, the damage to what was the upside of the boot that originally caused the problems:
IMG_1644.JPG

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