Rolls-Royce and Bentley Forums banner

1 - 10 of 10 Posts

·
Registered
Joined
·
399 Posts
Discussion Starter #1
The hoods on these big beasts are pretty huge. You think it won't happen to you, the hood is always a concern. I mean the car is well looked after-.Wrong. !!
Time is the killer. I parked up on my drive after a nice warm day out, start to raise the hood, it hesitates and green fluid is dribbling down top and side rail. I throw in some tissues to capture it, foolishly try again and more fluid. I'm a victim of the dreaded 'green shower'!!
So I'm thinking I'll drive it topless to my mechanic some way away tomorrow. I start to read up online and fear I'm going to lose my shirt!
I read this guy http://robisonservice.blogspot.com/2014/11/convertible-top-repair-in-bentley-azure.html
He's pretty much spot on but I'm thinking I'll try and fix it myself. Can't be all bad? And yes it is a Mercedes system with the 3 pointed star on the actuators.
Next day I gain access to the inner sanctum of the top rail hood locks. Sure enough one hose has popped off. Each lock has two hoses and they're all flaking. The main supply and return look good and all the hoses around the pump are good.
So Robinson is right, the furthest away suffers most. The power in these locks is like a water tight door on a ship!KLUNK
I source the four hoses from CRH Hoses https://www.cabriolet-roof-hoses.com/bentley-rolls-royce/ next day delivery £185. They even told me how to change them as there's a junction block that uses little O rings and round clips for each hose. I marked everything and changed them one by one as get it wrong and you're lost.
Took me a couple of days to replace them, they're slightly thicker and less flexible. I used lots of small cable ties and rubber strip to prevent chaffing. The worst part of these jobs is to work out the removal of the trim. Yes they are a devilishly crafty hand built car.
System runs perfect now. Sucked out the fluid and replaced with new CHF. What a result!! Nice when things go well.
 

·
Registered
Joined
·
399 Posts
Discussion Starter #2
Here's the photos.Perhaps Admin can move them both to technical section.
 

Attachments

·
Registered
Joined
·
2,176 Posts
I have met JE Robison a few times at his shop in Springfield, Mass. He is extremely smart and a great resource for the RROC and DIY owners in general.
 

·
Registered
Joined
·
399 Posts
Discussion Starter #5
To be fair If I had done this job before it would have taken me about 2 days at 6 hours=12-15 hours.I was only replacing the 4 hoses at screen top, The 60-90 hours estimate is to replace all the hoses and overhaul the actuators. That could easily be 90 hours. Worst part is removing all the trim and working out how it's held in place. Actuators are nor serviceable so it's a niche service. I'm not convinced it's all needed to be done and this was a one off
I'm hoping I've seen the last of it. With such a limited production run there's not much information out there and probably limited to specialist dealers. I did note in my search that there's a micro industry out there fixing roofs. It could end up being a very long piece of string though.
https://www.caymanautos.co.uk/
 

·
Registered
Joined
·
802 Posts
These look a lot like the top hydraulics on an R129 Mercedes Benz SL (from 1990-2002). For the Mercedes Benz, there are 12 hydraulic cylinders that operate that top. It's good to know that the Azure uses the same system because I have about 24 of those cylinders sitting on my shelf from prior cars that I've dismantled and plan on making an Azure a future purchase.

The cylinders themselves have o-rings that can fail. There are rebuilders out there that will rebuild them at relative low cost but as you probably know. They're a PITA to get in and out.

Learnt something new. Thank you!
 

·
Registered
Joined
·
11 Posts
**snippage here**


The cylinders themselves have o-rings that can fail. There are rebuilders out there that will rebuild them at relative low cost but as you probably know. They're a PITA to get in and out.

Learnt something new. Thank you!
those "O" rings WILL fail, in time apparently, not due to use.. maybe using will extend their life.. i fear for this job on my SL55.. so i exercise the top A LOT.. :)

not sure i should add to this thread since i'm here trying to learn the possible issues with a corniche-5 i'm in the process of buying BUT i just did my R129 ('97 SL600) and while many of the cylinders were straight forward replacing there were some that took positioning the top in a half up position so as to get the "pins" (****, can't think of the correct term just now) in and out..
getting the hoses out of and back in each cylinder was mostly straight forward..
just don't forget to seal the system before powering it up and down..
the hydraulic fluid is readily available online and it is reasonable.. i used the same in my S600 when it blew one of its suspension lines..
there is a cylinder rebuilder in washington state (i forget their name just now) who sent me rebuilt cylinders AND a special tool they make for one of the tricky parts of the job..
i kept the old cylinders to return as the "cores"..
i think the cost was about $100 per..

it took me about 2 months working sporadically, with my handyman, to do the job.. 60 hours..? on the Mbz probably close.. on a corniche or azure..? maybe it would be easier since that car is much bigger and thus the working parts might not be so "buried" in difficult to reach places..
mercedes forums will have more hints for those wishing to do their own work..
 

·
Registered
Joined
·
399 Posts
Discussion Starter #9
Used my 98 Azure a bit and issues with roof not engaging locking mechanisms on rear flap or not locking rear window. Now I've had issues originally that I resolved if you read above,Green shower. This roof can drive you mad and put fear into you. It's BIG and has twelve pumps and lots of micro switches
I had a Eureka moment. Keep the foot on the gas at about 1500 rpm. All works great now. Manual doesn't tell you this.
Could actually hear a belt squeal. Conclusion is the system needs a lot of juice. Don't forget this is an overworked Mercedes system. No plans to fiddle with it. Well fettled and lubricated
 

·
Registered
Joined
·
3,547 Posts
Just for the record, I have some documentation regarding the Azure top, and sources for getting the hydraulics refurbished, in the RR & Bentley Parts, Repair, Restoration & Other Resources Compilation.

There's a part on Corniche top hydraulic oil options which would be directly applicable to the Azure as well.

Search on the phrase "Top Hydraulics" and you'll hit all of them.
 
1 - 10 of 10 Posts
Top