rover 75 rear upper supension arm

david2000 · 27th May 2020, 12:08

hi to all
had the mot yesterday and it failed on the rear upper suspension arms I have had a look and three bolts are easily to remove but I cannot see how to remove the bolt that bolts the arm to the subframe can anyone help and what size socket will I need
david

roverbarmy · 27th May 2020, 14:40

This THREAD may help you.

The PDF in post 5 should answer most of any questions.

macafee2 · 27th May 2020, 14:51

The bolt requires a 15mm socket and a short, short extension.
Follow the upper arm to the sub frame, then look at the edge of the sub frame that faces the front of the car. There is a round hole, you get at the bolt via this hole

Warning, these bolts have a history of forcing the captive nut to turn which means it is a sub frame off job.

Suspension bolts to be torqued up with car on its wheels, not in the air

macafee2

roverbarmy · 27th May 2020, 17:21

Forgot to mention to spray all attachments liberally with plus gas or similar i advance of "trying" the hidden bolt. There is a slight depression in the top/side of the subframe which leads to the captive nut, through which you can spray with easing fluid, using the straw attachment. Access is from under the car at the front of the subframe using a six sided socket and short extension (and/or a flexi drive). I used a very long breaker bar but access is limited to a part turn only. Don't attempt to use a 12 point or it may slip and then you are banjaxed! If that fails, it's a subframe off job!

Blink · 29th May 2020, 16:23

This pic might help - it's the rear subframe as seen from the front (imagine you're the fuel tank). The upper arm bolt heads are in those two holes.

As others have said, you'll need a short 1/2" extension - this one will do it. The two bolt heads you can see are the lower arm bolts.

Here are the 2 captive nuts, as viewed from above (imagine you're the car floor). Give them a really good soaking with Plusgas before attempting to undo the bolts, otherwise you risk them spinning. If that happens it's a subframe off job.

Blink · 29th May 2020, 16:29

Here's one of the hated captive nuts.

macafee2 · 29th May 2020, 20:39

may be read this thread
https://the75andztclub.co.uk/forum/s...d.php?t=305251

macafee2

david2000 · 30th May 2020, 00:14

hi to all
read the thread and I have ordered acetone and fully synthetic auto transmission oil and I will try it I have a tip to share when I will be reassembling all the bolts will be covered in pure copper grease this will stop the bolts from rusting and make them easier to remove I have put copper grease on my wheel nuts and this helps when I need to remove the wheels
I know how to get the bolt loose with heat but the subframe would have to be removed to do so
david

27th May 2020, 12:08	#1
david2000 Loves to post Rover 75 Tourer Join Date: Dec 2007 Location: Ammanford Posts: 485 Thanks: 248 Thanked 29 Times in 24 Posts	rover 75 rear upper supension arm hi to all had the mot yesterday and it failed on the rear upper suspension arms I have had a look and three bolts are easily to remove but I cannot see how to remove the bolt that bolts the arm to the subframe can anyone help and what size socket will I need david

27th May 2020, 14:40	#2
roverbarmy This is my second home Roverless + 1.7D Sportage Join Date: Aug 2014 Location: East Norfolk Posts: 7,050 Thanks: 729 Thanked 2,021 Times in 1,449 Posts	This THREAD may help you. The PDF in post 5 should answer most of any questions. __________________ Oil in my veins!

27th May 2020, 17:21	#4
roverbarmy This is my second home Roverless + 1.7D Sportage Join Date: Aug 2014 Location: East Norfolk Posts: 7,050 Thanks: 729 Thanked 2,021 Times in 1,449 Posts	Forgot to mention to spray all attachments liberally with plus gas or similar i advance of "trying" the hidden bolt. There is a slight depression in the top/side of the subframe which leads to the captive nut, through which you can spray with easing fluid, using the straw attachment. Access is from under the car at the front of the subframe using a six sided socket and short extension (and/or a flexi drive). I used a very long breaker bar but access is limited to a part turn only. Don't attempt to use a 12 point or it may slip and then you are banjaxed! If that fails, it's a subframe off job! __________________ Oil in my veins!

27th May 2020, 14:51	#3
macafee2 This is my second home Rover 75 Saloon & Tourer Join Date: Sep 2012 Location: Lincoln Posts: 14,929 Thanks: 1,630 Thanked 3,032 Times in 2,181 Posts	The bolt requires a 15mm socket and a short, short extension. Follow the upper arm to the sub frame, then look at the edge of the sub frame that faces the front of the car. There is a round hole, you get at the bolt via this hole Warning, these bolts have a history of forcing the captive nut to turn which means it is a sub frame off job. Suspension bolts to be torqued up with car on its wheels, not in the air macafee2

29th May 2020, 16:23	#5
Blink 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	This pic might help - it's the rear subframe as seen from the front (imagine you're the fuel tank). The upper arm bolt heads are in those two holes. As others have said, you'll need a short 1/2" extension - this one will do it. The two bolt heads you can see are the lower arm bolts. Here are the 2 captive nuts, as viewed from above (imagine you're the car floor). Give them a really good soaking with Plusgas before attempting to undo the bolts, otherwise you risk them spinning. If that happens it's a subframe off job.

29th May 2020, 16:29	#6
Blink 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	Here's one of the hated captive nuts.

29th May 2020, 20:39	#7
macafee2 This is my second home Rover 75 Saloon & Tourer Join Date: Sep 2012 Location: Lincoln Posts: 14,929 Thanks: 1,630 Thanked 3,032 Times in 2,181 Posts	may be read this thread https://the75andztclub.co.uk/forum/s...d.php?t=305251 macafee2

30th May 2020, 00:14	#8
david2000 Loves to post Rover 75 Tourer Join Date: Dec 2007 Location: Ammanford Posts: 485 Thanks: 248 Thanked 29 Times in 24 Posts	hi to all read the thread and I have ordered acetone and fully synthetic auto transmission oil and I will try it I have a tip to share when I will be reassembling all the bolts will be covered in pure copper grease this will stop the bolts from rusting and make them easier to remove I have put copper grease on my wheel nuts and this helps when I need to remove the wheels I know how to get the bolt loose with heat but the subframe would have to be removed to do so david