![]() |
![]() |
|
8 & 10 cyl Bristol cars Type 407 onwards - restoration, repair, maintenance etc |
![]() |
|
Thread Tools | Search this Thread | Display Modes |
|
|
|||
![]() I have read through the postings on the 411 Master Cylinder, but I would appreciate some clarification and assistance.
Initial symptoms: 411-S1 has stiff rear brakes.
My hunch is that the rubber hose at the Master Cylinder is partially blocked... it will work when foot pressure is applied, but closes down when back pressure wants to release the pads. Finally, BODA asked if they could use my postings of the "shadetree mechanic" steps taken, so I have been documenting the findings for future owners in a way that eliminates the back-and-forth, but provides the helpful directions for those of us too far from a qualified repair shop. Clarity in answers will be appreciated by future Bristol custodians (Bristols can last forever, it's the current owners who come and go). |
|
|||
![]() Quote:
According to the 411 Owners Manual the master cylinder should be a Girling product. It does sound very similar to the issue Peter Dowdle had. EDIT/PS: Claude, please post a photo of the master cylinder |
|
|||
![]() Quote:
|
|
|||
![]() Kevin your series 5 cylinder is the same as the range rover one i have fitted except the plastic tank is slightly different in that it has a fluid lever sensor fitted to the lid.
|
|
|||
![]() Peter do you have the part number for the Range Rover master cylinder that you used? I want to see if it is the same number as the MC Girling list for the Bristol 411.
I'm intrigued as to how/why Bristol used a different MC on the 411 S1&S2. I have the Girling Parts lists for the Bristol 410 and 411 and the photo of yours doesn't appear to be the same as the MC listed for either vehicle. Nor can I find a MC in the Girling catalogue illustrations that looks like the one on your's and Claude's cars. However, the part number on Bristol's parts list for the 410 is also slightly different to the part number listed by Girling for the 410! The joys of low volume, hand built cars! ![]() |
|
|||
![]() Kevin I purchased my range rover cylinder from Ritter Landrover in Burwood. The part no on the invoice was LR RTC3657. These are all over the internet for mid late 70s and early 80s Range Rovers. All series 1 and 2 411s seem to have the same cylinder ( although Brother Geoffs had something different from what he tells me). They all had the twin tanks separate from the unit itself. They are an old fashion looking unit with an unusual mounting system. I suspect their supply dried up and were forced to change to the more modern cylinder which seems common on all series 3 to 5 cars.
My conversion has been a great success. |
|
|||
![]() Claude
Too many issues one after the other can seem daunting but the best approach is to follow a logical elimination path. Releasing the pressure after the servo allows the brakes to come off, so it's either the servo or the master cylinder that is holding them on, now that you've eliminated the brake line between the servo and the callipers. So release any pressure between the master cylinder and the servo, simply by loosening a connection point. If the brakes don't then come off it is the servo that's the problem, if they do then it's the master cylinder, or possibly the brake line between the master cylinder and the servo. To eliminate the latter try loosening a connection point at each end of that brake line If it's the servo it's a case of rebuild or replace, I'd be pretty certain that there must be someone in NZ who rebuilds them, if of course you can find them. If it's the master cylinder do just check that the brake pedal is free to return fully before you attack it. My knowledge of V8 brakes stops at the 410 which uses twin Girling master cylinders, callipers and connectors but Lockheed servos (Lockheed 4258-405). I believe that the 411 is similar apart from the single master cylinder. Roger |
|
|||
![]() As i mentioned in my earlier post I had similar problems > To clarify the problem can you post a photo of the master cylinder. Series one and two cars have varying master cylinders than 3 4 & 5. My series 2 had an unusual type off a commer 3 ton step thru van. Parts and replacements are very hard to source. It also has an unusual mounting system , for these reasons the range rover cylinder is the way to go. If you decide to go down that track I can guide you through the conversion. Yes the original cylinder if the same as mine is very hard to remove and replace.
A photo if you can please |