My Turn for the Roof to break

B21 · Post by **B21** » Sat May 20, 2023 8:57 am

Good write up…good to hear how things get concluded

Stash36 · Post by **Stash36** » Mon May 22, 2023 8:53 am

Hmm, new problem. The roof will open really jerky every now and again, about 1 time in 6 it's happening, on retry it is fine, smooth as usual. I've searched here and found this reported but not intermittent and I've not seen a clear resolution. I've seen suggestions of water or air in the system.
Any ideas, is there a way to bleed it?

RobbiZ4 · Post by **RobbiZ4** » Mon May 22, 2023 9:56 am

No water or air in the closed hydraulic system is possible without opening the hoses manually (or by a broken hose). But, just check the hydraulic fluid level on the reservoir. It should be between middle and up to the top marker.

Stash36 · Post by **Stash36** » Mon May 22, 2023 1:10 pm

Thanks Robbi fluid level is bang on the top marker.

DonDon · Post by **DonDon** » Mon May 22, 2023 3:38 pm

Do you need to add some lithium grease on the (many) joints and hinges?

Stash36 · Post by **Stash36** » Fri May 26, 2023 12:01 pm

No, no lubs is advised and it runs super smoothly 9 times out of 10.
I've been advised to try clean out the fluid reservoir and put fresh fluid in. Anyone done that can talk me through the process?

Stash36 · Post by **Stash36** » Tue Jun 20, 2023 8:39 pm

Update. I thought this jerky roof movement had gone away, now realised it only happens when the engine is running. I have a smart top and tend to open it with three clicks on the remote. If I open or close with the engine running, the jerky roof happens every three or four cycles. It doesnt happen at all with e gone off. Does that inform any ideas?

DonDon · Post by **DonDon** » Thu Jun 29, 2023 2:42 pm

Stash36 wrote: ↑Fri May 26, 2023 12:01 pm No, no lubs is advised and it runs super smoothly 9 times out of 10.
I've been advised to try clean out the fluid reservoir and put fresh fluid in. Anyone done that can talk me through the process?

@RobbiZ4 Should all of the joints in the roof mechanism NEVER be lubricated?

RobbiZ4 · Post by **RobbiZ4** » Thu Jun 29, 2023 10:30 pm

DonDon wrote: ↑Thu Jun 29, 2023 2:42 pm
Stash36 wrote: ↑Fri May 26, 2023 12:01 pm No, no lubs is advised and it runs super smoothly 9 times out of 10.
I've been advised to try clean out the fluid reservoir and put fresh fluid in. Anyone done that can talk me through the process?
@RobbiZ4 Should all of the joints in the roof mechanism NEVER be lubricated?

Well, my current view is NO, NEVER, as most of the joints contain an inner bushing. There is a minor exception regarding the rear roof shell, where its 2x2 locking hooks grab around their bolts.

Z4-forum.com

Z4-forum.com