Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: Turk on 07 June 2008, 21:44:39

Title: Rear coil spring: Removal
Post by: Turk on 07 June 2008, 21:44:39
Changed my rear shocks on my '00 CD today and I had intended changing the springs as well but I could not remove the old ones. The rear passenger side spring has broken at the bottom which is not unusual on the Omega so I'm told.
I changed the springs on my '94 Elite a few years ago and I don't recall having any difficulty removing the old springs or fitting the replacement. Although the new ones being fitted were 40mm lower so fitting would have been easier.
I'm baffled by this as the Elite job was so straightforward I don't even remember how I did it.
This afternoon I removed the old shocks but the springs were still under too much preassure too remove.

Can anybody advise where I'm going wrong ?

Should I be using spring compressing clamps or do I have to remove something else to allow spring removal ?    
Title: Re: Rear coil spring: Removal
Post by: tunnie on 07 June 2008, 21:51:45
read the guide?

take it you are lowering the diff?

1. Unclip ABS sensors from diff.
2. Remove brake lines from clips to give slack.
3. Un-do anti-roll bars
4. un-do shocks.

Car is supported on axel stands as high as it can go, with front wheels chocked.

Support the diff with a jack, remove 4 diff bolts.

Lower diff slowly, whole suspension drops, just take out the spring.

May need to take off the wheels to give some extra space.
Title: Re: Rear coil spring: Removal
Post by: Turk on 07 June 2008, 22:17:33
Blimey, I don't remember doing all that on the Elite !! All I remember is that I did it on the 4 post lift. Couldn't get near it today, both lifts had cars on them.  
I jacked it up with trolley jack under the diff, wheels off, shocks off, springs...not gonna budge. Now I know why  :-[.  

Sure do wish I had a lap top with a mobile connection. Now I have to start all over again tomorow ::)  

Thinking back to the Elite job, using a gear box support under the diff rings a bell. I must have used that and lifted the whole car instead of lowering the diff.  

Cheers Tunnie  :y
  
Title: Re: Rear coil spring: Removal
Post by: johnboy27 on 07 June 2008, 23:22:57
i have done a pair of rear springs today.
all i did was support the car on stands on the sills, i removed the shocks then removed the three 15mm bracket bolts that holds the front half of the subframe to the floor. then supported the subframe with jack then slackened the 18mm bolt that holds the subframe to the floor. i never touched the diff end on the subframe.
lower the jack enough to get the spring out.
on the first one i compressed the spring with clamps, but the other side i managed by using a pry bar on top of the spring to just compress it slightly.
just be carefull not to stretch the flexi-hoses, might be worthwhile taking the clips off so it can move.
total time for both sides was only about an hour & half

hope this helps ;)
Title: Re: Rear coil spring: Removal
Post by: Turk on 07 June 2008, 23:43:49
My printers thrown a wobbly so I'm taking photos of the posts with my mobile  ;D
I'll use them as a reference tomorrow. Cheers.
Title: Re: Rear coil spring: Removal
Post by: tunnie on 08 June 2008, 05:44:51
Quote
i have done a pair of rear springs today.
all i did was support the car on stands on the sills, i removed the shocks then removed the three 15mm bracket bolts that holds the front half of the subframe to the floor. then supported the subframe with jack then slackened the 18mm bolt that holds the subframe to the floor. i never touched the diff end on the subframe.
lower the jack enough to get the spring out.
on the first one i compressed the spring with clamps, but the other side i managed by using a pry bar on top of the spring to just compress it slightly.
just be carefull not to stretch the flexi-hoses, might be worthwhile taking the clips off so it can move.
total time for both sides was only about an hour & half

hope this helps ;)


With the diff down you can replace both at the same time, no spring compressors needed, and you can align the springs correctly.

can be done in under an hour.
Title: Re: Rear coil spring: Removal
Post by: TheBoy on 08 June 2008, 09:25:42
Yup, use the guide by Marks_DTM_Calib in Maintenence Guides section :y
Title: Re: Rear coil spring: Removal
Post by: Olympia5776 on 09 June 2008, 11:58:49
Quote
Yup, use the guide by Marks_DTM_Calib in Maintenence Guides section :y
I used the guide a month ago to do mine. It took longer to get the car jacked up and secure than it took to change the springs !
Simple job.
Don
Title: Re: Rear coil spring: Removal
Post by: Mike Collins on 09 June 2008, 15:26:41
Be very carefull not to trap the wiring to the fuel pump when bolting the diff back up.

How do I know?????
Title: Re: Rear coil spring: Removal
Post by: BruceT on 09 June 2008, 15:29:27
When I bought my MIG about 3-4 weeks ago with a siezed handbrake, while the wheels where off the garage noticed both sides at the back, the coil right at the bottom had corroded away and come away. About half inch right at the bottom. Replaced both.
Title: Re: Rear coil spring: Removal
Post by: TheBoy on 09 June 2008, 15:37:12
Quote
When I bought my MIG about 3-4 weeks ago with a siezed handbrake, while the wheels where off the garage noticed both sides at the back, the coil right at the bottom had corroded away and come away. About half inch right at the bottom. Replaced both.
Yeah, common for Omegas to lose a bit off the bottom of spring through corrosion.
Title: Re: Rear coil spring: Removal
Post by: tunnie on 09 June 2008, 16:38:49
Quote
Quote
When I bought my MIG about 3-4 weeks ago with a siezed handbrake, while the wheels where off the garage noticed both sides at the back, the coil right at the bottom had corroded away and come away. About half inch right at the bottom. Replaced both.
Yeah, common for Omegas to lose a bit off the bottom of spring through corrosion.

Exactly same thing happend on mine.
Title: Re: Rear coil spring: Removal
Post by: Matchless on 09 June 2008, 16:40:25
Quote
Blimey, I don't remember doing all that on the Elite !! All I remember is that I did it on the 4 post lift. Couldn't get near it today, both lifts had cars on them.  
I jacked it up with trolley jack under the diff, wheels off, shocks off, springs...not gonna budge. Now I know why  :-[.  

Sure do wish I had a lap top with a mobile connection. Now I have to start all over again tomorow ::)  



Thinking back to the Elite job, using a gear box support under the diff rings a bell. I must have used that and lifted the whole car instead of lowering the diff.  

Cheers Tunnie  :y
  


Thats an excellent way of wrecking the diff rubber mountings which are designed to support the weight of the diff, not half the car's weight.
You have to support the body weight on the jacking points ahead of the rear wheels.
Title: Re: Rear coil spring: Removal
Post by: Turk on 09 June 2008, 20:53:45
Re: Lifting via the jack under the diff.
That did occur to me when I was checkling the rubbers after lowering the diff on sunday.
Yep, jacking it up etc took longer than changing the springs. Dead easy with the diff lowered.
Thanks for all the input folks. Next job..the front end.