I seem to be missing some parts from my 1962 MKII. I believe there is supposed to be a cover that protects and supports the brake servo and a vacuum reservoir or accumulator tank under there as well.
Please see the following video to see what I am talking about.
https://www.youtube.com/watch?v=HVtKKLwV8pY
If anyone has either of these parts, please let me know.
Here is a picture of what this area is supposed to look like:
BTW, I got this photo from here:
https://landieman.com/2021/03/16/test-fit-lockheed-brake-servo/
It seemed to be one of the only photos I could find online of this area of the car.
I think those are some of the first things to rust to pieces. You might try Jagnut (Jack White) in Luray, VA. He specializes in Jag sedan parts. You have to call him and wait for a response, but he usually gets back within a day. 540-743-4037
I have the servo and tank, if you need those.
The servo is there but the tank and it’s shield are completely missing. How much do you want for the tank Joe? I have also been told there is a little bent arm that extends between the top of the tank and the servo shield that supports the top of the tank from waving around. I am missing that as well. I am in NE Ohio in case we need to figure out shipping costs.
My tank was rusted along with the shields, but the car came with a spare tank. I need to pressure test it and get some photos for you.
I purchased mine, which were missing, from SNG Barratt in the UK. They had the tank and the shield but not the arm at the time. You will also need the valve for the tank.
I don’t know how the arm fits and I would appreciate it if a member could post a photograph of the assembly, probably viewing through the headlamp hole, or a sketch.
You need to check the downstream side from the tank to the left side vacuum reservoir which is for the ventilation controls and the scuttle vent. My transfer tube from right to left was perfect on the outside but heavily corroded internally. I replaced it with aluminium of the same size as it is readily available and easy to make the shallow bends. Don’t hesitate with replacing the valve on the left tank also.
The problem with this type of vacuum system is that it draws in air without any form of filtering or drying, and the atmospheric moisture gradually settles in the bottom of both tanks, eventually rusting them through. The water stays as there is no way to extract it. Modern systems use heavy duty plastic tanks and there are some generic tanks available that could be used but I haven’t investigated this option I will check on the possibility of applying a rust protection to the tank internals. The valves are die cast stuff and they corrode internally, including on the diaphragm seat, preventing a vacuum seal.
The bent arm was used on ‘early’ cars (the Jaguar Service Parts Manual will contain the change point by chassis number). Our MK2 was built in October of '62 and it does not have the arm support that spans between the brake servo cover and the vacuum tank protective cover.
The following image is from our MK2.
My '63 does not have the arm either. It does have three short bolts holding it to the bracketing.
Both the one-way-valve and the Reservac were leaking on my new MK IX, and that version had a different mounting arrangement than the MK 2, and was not available from the usual suppliers. Upon searching for a replacement I came across this product:
…which comes complete with a one-way-valve. I fabricated a mounting bracket and got away with paying a quarter of what an original recreation would cost.
The vac tank looks similar to an early XJ6 tank I have, probably same as S-type, 420 etc, there should be plenty of them around.
The S Type catalogue shows the arm, p.n.C22425, with no production limits so I assume it continued throughout the production run. The only purpose I see is to give some bracing stability. Maybe it could shake a bit on rough roads.
Since you are in Ohio, you might try Welsh Jaguar in Stubenville who part out Jaguars and sell new parts as well. If buying a used tank make sure it has no rust holes.
One thing to keep in the back of your mind for this vacuum system, and any car vacuum system, is that any leakage affects the tuning and running of the engine. For the S Type, there is well over a dozen joints in total so it’s probably worthwhile replacing all 60-year-old rubber.
This post is in violation of the forum rules. To whit; no selling in the type specific forums. Please take it down and repost it in the classifieds section.
I believe i got it deleted.
Yep thanks, I replied via PM as well.
