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Old 25th March 2020, 14:17   #1
macafee2
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Default lowering front sub frame & front arm bushes

I am about mid way through replacing the front arm bushes on my diesel.
In part I am following marinabrians method https://the75andztclub.co.uk/forum/s...d.php?t=240928 as I want to avoid undoing the 3 exhaust nuts.

I want to lower the sub frame a couple of inches so it is nearly touching the exhaust.

Do I need to remove the arm from the hub or can the arm cope with being lowered a couple of inches while still attached?

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Old 25th March 2020, 14:46   #2
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If you are just replacing the rear bushes on the arms, You don't need to touch the exhaust or sub frame. If the car is high enough off the ground (ie. on ramps) the bushes can be removed once the two retaining bolts are removed. They can be a pain in the butt to get off the arm but I cut the rubber using a two handed flexi blade, then cleaned and oiled the arm, tapping the centre of the bush off with a hardwood drift. One came off without needing to do this.
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I had to lever the tyre/wheel back and forwards slightly to give enough clearance to remove and re-install the new bush. It will not collapse if you remove the rear bush whilst on the ramps. (At your own risk of course!) A pair of mole grips can be used to grip the bush so that the bolt holes line up (as they are under slight tension/flex on the rubber mount when positioned correctly).
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Old 25th March 2020, 15:40   #3
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I hate working in a confined space and would prefer to spend the extra time lowering or even removing the sub frame. At the moment the exhaust nuts are stuck fast so more plus gas is required and may be an overnight soak.

If lowering the sub frame a couple on inches wont harm the ball joint I may proceed that way but removing the sub frame I can tart it up a bit

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Old 26th March 2020, 20:42   #4
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Re the exhaust nuts being stuck, method I've done on three of my tourers is to heat the nuts with a small blow torch then squirt engine oil onto the said nuts and I've found that this is a sucessfull way to get them off. Be sure to use a 6 sided socket.
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Old 26th March 2020, 20:43   #5
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Quote:
Originally Posted by Rover 75 Tourer View Post
Re the exhaust nuts being stuck, method I've done on three of my tourers is to heat the nuts with a small blow torch then squirt engine oil onto the said nuts and I've found that this is a sucessfull way to get them off. Be sure to use a 6 sided socket.
Or run the engine up to temp, the exhaust nuts are usually quite forgiving.
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Old 26th March 2020, 21:52   #6
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10 minutes of blow torch per exhaust nut and each one came undone, still tight. As soon as they moved they were pretty easy to get off.

The car was in the garage and would have stunk it out if running it in there but that is a method I had not considered

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