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SimonC
X-TRAIL NEWBIE
Date Registered: 01-2016
TOTAL POSTS: 4
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Re: T31 Suspension Lift & AirBag Asst
Hi,
Thanks for all the comments in this thread. Inspired, I put in King Springs on the Australia Day Long Weekend. Thought I'd write down what I experienced, hoping it helps others. I'm not overly experienced with mechanical work, so it took a while.... but got there in the end. Please use this as a help, but at your own risk!
Front springs:
1. Jack up & support on stands. Remove wheels.
2. Use a hammer & screwdriver, knock out the brake hose lock plate.
3. If present, remove cap from upper end of stabiliser bar connecting rod. Remove the nut. Then remove stabiliser bar con rod from strut.
4. Place a tyre under the disc, to rest it when it drops down
5. Undo the two nuts holding the steering knuckle to the strut (21 mm), and knock out the bolts.
6. Unclip the rubber grommets holding the wheel sensor wire in place
7. Under the bonnet, locate the two bolts that hold the strut in place. Remove them both.
8. On the plastic molding nearby, there is a round plug. Use a screwdriver to remove it.
9. Put 13 mm socket on an extension, down the hole, and onto the third strut bolt. Loosen it, but leave the screw in the hole. Don't try to remove it - can be tricky to reposition.
10. Remove the strut.
11. Wrap a metal strap (I cut a bit of gal sheet) around the strut and clamp in vise.
12. Apply penetrating oil to the piston rod lock nut. It can work in while springs are being compressed.
13. Apply and tighten spring compressors until you can rotate the top strut bearing rubber by hand
14. Place 18 mm offset ring spanner on piston rod lock nut. Place 6 mm Socket hex into the top of the piston rod, and attach to breaker bar. (Socket hex cost $6 from local tool store). Undo the lock nut.
15. Remove spring. Clean out the grit from inside the top mounting bearing (run under a hose and spin it around). Clean out the grit from around the rubbers at the bottom.
16. Reverse the process to put it all back together. Use a torque wrench:
* Piston rod lock nut - 68 Nm
* Strut top bolts - 19 Nm
* Steering knuckle bolts - 142 Nm
* Stabiliser bar con rod nut - 84 Nm
Rear springs:
1. Jack up & support on stands. Remove wheels.
2. Remove two brake caliper mounting bolts. Use a bit of wire to hang the caliper out of the way.
3. Remove wheel sensor from axle housing. The wheel sensor is at the rear, and has a securing screw. Once the screw is removed, it can be wiggled in the hole to loosen it and work it out.
4. Put jack under suspension arm.
5. Remove shock absorber lower nut/bolt. Can also remove the disc rotor (release handbrake)
6. Remove bolt connecting lower link to the suspension arm
7. Remove bolt connecting upper link to the suspension arm
Here's where the tricky bits start.... there may be multiple ways to do this....
8. Find the end of the drive shaft near the gearbox. Slide the cover piece outward to loosen it (had to use a screwdriver to lever it).
9. Knock the suspension arm outwards at the top and bottom, until the drive shaft disengages with the gearbox.
10. Once this is done, lower the jack to remove tension off the spring, and get it out.
Reverse the process to install, noting:
1. It was tricky to pull the suspension arm back in again. I used a ratchet/cable (these are used for fencing, vehicle recovery etc). Cost $55 from local store. That made it easy.
2. Bolt torques:
* shock absorber bolt - 120 Nm
* upper/lower link bolts - 150 Nm
* caliper mounting bolts - 84 Nm
* sensor bolt - 10 Nm
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Simon C, Brisbane
2012 X-Trail ST
King Springs + 225/65R17s
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31/Jan/2016, 1:29 pm
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TopGun65
X-TRAIL ENTHUSIAST
Date Registered: 07-2015
TOTAL POSTS: 200
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Re: T31 Suspension Lift & AirBag Asst
G'day,
I fitted the Dobinsons 30mm Lift Springs and Monroe Struts and Shocks a couple of weekends back. The ride improvement is very noticeable (not to mention the looks), staying nice and flat while cornering. The bumps on the road are more noticeable than before.
Excellent DIY instructions Simon. The only thing I didn't have to do was disengage the driveshafts from the rear diff, guess I got lucky. Otherwise it took me around 6 hours on my own, and that included changing the Engine Serpentine Belt and bleeding the brakes. Now, with the extra clearance, I'm looking forward to hitting Bribie Island next week.
Last edited by TopGun65, 11/Jul/2019, 4:24 pm
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Eric
X-4282 (c)
Glen Alpine, Sydney
2010 T31 Cvt STL
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12/Apr/2016, 4:55 pm
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Re: T31 Suspension Lift & AirBag Asst
quote:
TopGun65 wrote:
Brett, I have taken photos of the before and after ride height, but I'm not sure how to post them.
Hi Eric,
Check THIS section of the forum 
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13/Apr/2016, 10:16 am
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