Thread: My 2a freshen up

Originally Posted by JDNSW

Vacuum reservoirs were fitted to late Series 3 diesels with boosted dual circuit brakes, but they did not look like that!

John

John, where does the LR diesel get it's vacuum from?
The intake manifold, or does it run an alternator with a vacuum pump on the rear like a lot of modern diesels do?
Any idea why it needed the canister?


Cheers, Mick.

Originally Posted by mick88

John, where does the LR diesel get it's vacuum from?


Cheers, Mick.

The Landrover diesels with assisted brakes got their vacuum by having a throttle valve in the intake that closed at small throttle openings, but was full open otherwise.

The cannister, actually made from tow "half egg" shaped pressings welded together, and about the size of the one you have, stored vacuum so that you would have some assistance for an initial pedal operation after taking your foot off the accelerator - particularly if the engine was travelling fast, there would be plenty of vacuum very soon, but you don't really want braking "soon", you want it now.

This mechanism depended for satisfactory operation on having the throttle linkage properly adjusted. Shutting too soon or not fully opening would restrict power and emit smoke - not shutting soon enough or completely enough, not much vacuum and hence heavy brakes.

John

Some more pictures of air tank couldn't find any markings or part numbers.


From what you guys are saying it seems a good addition to the braking system so I will refurbish it and paint the inside the tank.


Cheers Paul

Filled cracks in hard plastic vent control knobs and painted them, I'm thinking I may use this technique on the steering wheel as well


Also got first coat on bonnet need to source the 4 rubber pads for spare tire


Cheers Paul

Originally Posted by bemm52

Some more pictures of air tank couldn't find any markings or part numbers.


From what you guys are saying it seems a good addition to the braking system so I will refurbish it and paint the inside the tank.


Cheers Paul

It won't hurt, but for petrol engined vehicles where the vacuum is taken from the manifold, it is not a great advantage - there is always some vacuum provided the engine is running, even at fuill throttle - and really, how often do you use full throttle? (I know, in a Seiries, going up any sort of a hill - but then the vacuum gets a boost when you take your foot of momentarily changing gears.)

John

Nothing much happened to 2a today except wet sanding first coat on bonnet.

Found an absolute honey hole coup that hadn't been burnt of fire wood so spent the day cutting, splitting and stacking when I got home


plus Wednesday evening is happy hour at our local.....hic

second coat on the top of bonnet turned out a bit ordinary not sure why so will sand it back and try again.


It seemed to craze in spots I didn't sand may be 24hrs isn't enough time between coats its been fairly humid here


Should I be trying to shoot just one coat over etch and leave it at that?


Cheers Paul

are you using an undercoat/primer after the etch primer