|
||
|
17th September 2019, 14:24 | #1 |
Posted a thing or two
Rover 75 Saloon Join Date: Apr 2019
Location: Under the car
Posts: 1,840
Thanks: 210
Thanked 244 Times in 221 Posts
|
Rear subframe & arms - installation questions
QUESTION 1
Is it possible to fit the rear subframe with the upper arms already bolted onto it (but not torqued up)? I ask because I just tried a dry run off the car and I can see that lining up the upper arms to get the bolts in will be a lot trickier if the subframe is already on the car. The lower arm bolts can be seen from underneath but the upper arm bolts can't - so I'd rather put the subframe on with the upper arms already attached. The lowered exhaust might be in the way though. QUESTION 2 How much lateral movement should there be between the upper arms and the subframe when the arm bolts are tight? (But not fully torqued) I'm getting some play between the arm bushes and the bolts - i.e. the arms can swing a little in the arc shown by the arrows below. Shouldn't they be fairly immovable relative to the axis shown by the dotted lines? Hope that made sense - it's difficult to describe in 2D. |
17th September 2019, 15:24 | #2 |
Precise
Rover 75 Tourer 2.5KV6 Connoisseur SE Join Date: Mar 2013
Location: Fleet
Posts: 2,968
Thanks: 630
Thanked 617 Times in 480 Posts
|
As this is one of my future jobs, I would expect some movement at this stage of the assembly, as the final "fixed" point is determined by the other link, the trailing arm.
It should be noted that the final torque must be applied with the vehicle weight on the wheels so as to not compromise the resilient bush's life |
17th September 2019, 15:45 | #3 |
This is my second home
MG ZT CDTi Join Date: Jan 2014
Location: carrick
Posts: 7,859
Thanks: 3,494
Thanked 2,657 Times in 1,973 Posts
|
Build it up on the ground and lift it with a trolley jack, using the threaded bar (the tip from another post) to help you guide it I to position. I would suggest you using two bars rather than the 4, as this will allow you a little 'wiggle' movement.
Keep an eye on cables and pipes when lifting. I didn't have access to a four post lift, nor ramps, so when mine was fitted, nuts and bolts were fastened just tight,then torqued with both hubs jacked up until you could just see the weight of the car lifting from the axle stands. Sent from my SM-A600FN using Tapatalk
__________________
It is not gloss primer .............. it is duct tape silver! |
18th September 2019, 09:03 | #4 | ||
Posted a thing or two
Rover 75 Saloon Join Date: Apr 2019
Location: Under the car
Posts: 1,840
Thanks: 210
Thanked 244 Times in 221 Posts
|
Quote:
Good point about torqueing up with the weight being on the wheels - I'd have missed that! Have you got a list of relevant torque settings btw? Quote:
I've got a couple of Duratool D00324 dollies I'm hoping use to slide the whole thing under. I can bolt them together with two wooden crossbeams so they can be any length. The only thing is they're 120mm high and I don't know if the exhaust is going to be in the way. I've got a metre of 12mm threaded bar - I'll cut two pieces off that to use as lifting aids. It still means a short lift by hand though - to get the bars through the subframe bushes. Or does it? Maybe if I put them through the bushes first, before the whole caboodle goes under the car. Can't get my brain round that one without actually seeing it. |
||
18th September 2019, 10:02 | #5 | |
This is my second home
MG ZT CDTi Join Date: Jan 2014
Location: carrick
Posts: 7,859
Thanks: 3,494
Thanked 2,657 Times in 1,973 Posts
|
Quote:
When you first remove the sub frame (old). Support the trailing arms or hubs to save damaging the bushes. I used a spare set of axle stands for this and bungee cords when it came to assembly. It will all be very obvious when you come to do it I have a pdf at home of all the torque settings if no one has them before. Sent from my SM-A600FN using Tapatalk
__________________
It is not gloss primer .............. it is duct tape silver! |
|
18th September 2019, 19:37 | #6 |
This is my second home
MG ZT CDTi Join Date: Jan 2014
Location: carrick
Posts: 7,859
Thanks: 3,494
Thanked 2,657 Times in 1,973 Posts
|
here are the torque settings for around the car (page 6-26 for rear suspension)
__________________
It is not gloss primer .............. it is duct tape silver! |
19th September 2019, 08:49 | #7 | |
Posted a thing or two
Rover 75 Saloon Join Date: Apr 2019
Location: Under the car
Posts: 1,840
Thanks: 210
Thanked 244 Times in 221 Posts
|
Quote:
Aha, that's exactly what I wanted - thanks Alan. |
|
19th September 2019, 08:58 | #8 | |
This is my second home
MG ZT CDTi Join Date: Jan 2014
Location: carrick
Posts: 7,859
Thanks: 3,494
Thanked 2,657 Times in 1,973 Posts
|
Quote:
Sent from my SM-A600FN using Tapatalk
__________________
It is not gloss primer .............. it is duct tape silver! |
|
19th September 2019, 09:48 | #9 | |
Posted a thing or two
Rover 75 Saloon Join Date: Apr 2019
Location: Under the car
Posts: 1,840
Thanks: 210
Thanked 244 Times in 221 Posts
|
Quote:
1. Remove old calipers, discs, backplates 2. Remove old trailing arms & hubs 4. Remove old toe-in adjustment brackets 4. Remove old subframe inc upper & lower arms and rollbar Sort out underside of floorpan - clean, paint, wax 5. Fit new subframe inc upper & lower arms and rollbar 6. Fit new toe-in adjustment brackets 7. Fit new trailing arms & hubs Sort out calipers 8. Fit new backplates & discs 9. Refit calipers Bleed brakes! |
|
19th September 2019, 10:10 | #10 | |
This is my second home
MG ZT CDTi Join Date: Jan 2014
Location: carrick
Posts: 7,859
Thanks: 3,494
Thanked 2,657 Times in 1,973 Posts
|
Quote:
Remove the rear bumper too (tip, remove rear lights also, as these can be easily damaged when removing the bumper, and it is 6 easy nuts for them). Loosen the shock tops too before lifting the car, also. Sent from my SM-A600FN using Tapatalk
__________________
It is not gloss primer .............. it is duct tape silver! |
|
|
|