Richard Farrant

Mark, I have just found a comaprison chart on the internet, and ISO220 is equivalent to SAE90 gear oil. So it looks like in this case, the army numbering was based on the ISO grade, this also happened on some of the military hydraulic oil specs. Always best to check though.

In the UK we tend to only use ISO viscosity standards for hydraulic oils, where as gear and engine oils are known under SAE viscosity grades. I cannot line up the ISO220 viscosity with SAE80w/90 which is what the army spec oil, OEP220 is. It may be confusion with the army designation of 220, which is not neccesarily its grade in civvy terms. Best to keep it simple and use a normally available gear oil grade of SAE 80w/90 or SAE 90EP for your Fox, and it looks like you are using the correct grade with the Morris oil you mentioned.

Stalwart transfer box has a special "no spin" diff in it, so unsuitable.

Mac, Similar type of siren, but think it may have been a Klaxon make...........and was 12 volt.

The purpose of this would have been because the internal sirens would have operated, but those working outside of the buildings would not have heard them.

Actually Tony, when I first started work with the Army, the establishment had a Massey Ferguson 35 tractor fitted with two sirens, one like this, and in the case of an attack, terrorist or otherwise, it was driven around the area to alert everyone. The fact that the siren in question is 6 volt, could serve to date it to 1940's as a lot of vehicles were of that voltage at the time.

Wayne, It is a long time ago now, but I have distinct memory of helping to fit a winterised kit to a Lightweight L/Rover. We had to get it completed that night in order for it to be put on board QE2, if my memory serves me correct. Not sure from what unit it came , but feel sure it was RM.

And here is a recovery calculator

Hi Simon, The other common source of leaking is the filler plugs, two of them, they need the correct sealing washers, and in good condition.

Simon, It sounds like it might be an exhaust blow from a manifold gasket.........or a cracked manifold.

It would be quite an engineering task, and I think an Eagle diesel would be a bit on the large side, a 12 litre engine, not particularly high revving compared to a B80, so unlikely to go as fast. The gearbox does come away from the transfer box, which would have to be retained. To mate an auto box to the transfer box would entail quite a bit of engineering. Also it have to be an engine with a shallow sump or converted to dry sump, again more engineering.

The sub-station was removed years ago. It was originally in the centre of a square, but re-designing the town centre it is still in the same place but as part of a new shopping area. I once read that the drive chains were removed on these tanks so they could not be used, but whilst surveying the interior a few years ago, for conservation work, I noted the drive chains still fitted, possibly because the engine and transmision were removed for the sub-station to be fitted. No floor in the tank either.

Monty, I doubted very much whether the plug thread was metric. Checked the Stalwart plug in same location, and that one is 1 3/16" Unified Special (UNS) and would bet that yours is the same.

hi Bernard, I think that I may have tracked the rogue judge down. It appears that a foreign person known as Borat, had infiltrated the judging system :-|..........

Have you tried Autosparks? I have had several from them, one was for a MW. If they do not have one, you can buy the correct cotton cover cable from them, colours to the chart and make it up, then tape it where you want it braided together and then can do it for you.

The principles of the boxes are very similar although in some applications you might find the gear engagement done by compressed air rather than mechanical linkage from the pedal. The fluid flywheel should be kept in mind all the time, do not set off in too high a gear, nor engage a higher gear too early. Do not let the engine labour in too high a gear. As for the box, do not skip gears, neither up nor down, go through the box in sequence, if not, bands will suffer, or worse.

No problem :-) A tip, do not leave it in an engaged gear whilst standing stationary with the engine running, this will overheat the oil and cook the seal. regards, Richard

Monty, You could not be so wrong . Actually if you clean the paint off, the numbers are stamped next to the slots. I will try and describe it as it may be less confusing than refering to you photos. 1st ( you should have to push the button down to select, but probably stuck down) ..this is at the end of the long slot, opposite end to where you have put 1st in your pics. 2nd is next notch back 3rd is right back 4th is forward end of short slot 5th is right back in short slot Neutral is in the gap between the two slots If you are in doubt about having selected Neutral, the pedal can be seen to be held in a low position, 1st is the highest pedal position and progressively lower as you go up through the box

OK Howard, can see the photo and it looks like RAF Blue Grey, but I am sure Ted will come along and give you all the info you require re. this as he is ex-RAF MT

Degsy, I have a feeling that it might be a Danarm, they were produced in wartime and had Villiers engines.

Hi Montie, Your distributor is a rarity..............it is a Delco Remy unit, an option by Rolls Royce but not at all common on British vehicles with B range engines.

Rick, I could not make them as my pipe bender will not bend close up to the nut. Easiest solution is to buy them ready made from a jeep parts supplier......commonly known as "pigtails". It is cheaper that way, saves time!

Howard, Perhaps it was used on a Fleet Air Arm station? I think they used vehicles painted in dark blue same as Royal Navy, at one time.

OK, OM33 was the standard hydraulic oil for the army's plant, tipping gear, recovery vehicles, cranes, and so on. You will find that it equates to the civilian recognised grade of ISO32, available all over, from agricultural dealers, etc. This is the universal grade for plant (unless it is something special). ........and it is not coloured.

Hi Howard, It would be a good few years since I worked on the MK, but memory tells me it was mounted behind the RH engine flap (ie drivers side on a RHD model). Think it was mounted on the top of a vertical post which was bolted to the chassis. Sorry no photos.