Richard Farrant

Valve bounce, weak spring, excessive valve tip clearance, etc.

Hi Sean, If that is the "challis" then they are same both sides on a Q4.

Hi Sean, I would think as this Rootes part has had a NSN allocated to it, then it is not for the Humber armoured or scout cars, but for the Commer Q4. If you mean it is for the spherical housing with flange (challis), then Rootes part number for Q4 was W41570 Housing, Drive. Sometimes the label inside the packaging has the older number. Richard

The oldest tool that I use regularly is a thread gauge / die for BA screws, made by Pratt & Whitney for British Government and dated 1915. It was even marked with the UK tool supplier, Buck & Hickman.

Hi Mark, This number comes up as a Triumph 5SW 500cc motorcycle :undecided: cheers Richard

Does this help? http://1914-1918.invisionzone.com/forums/index.php?showtopic=16821

Mark, If your gun tractor has a contract number on a plate in the cab, or a Supply Mech number, it will give an idea of the batch of numbers it came from. The book I use is a reprint from an official document of C.O.D. Chilwell, giving the census number list for B vehicles.

Sorry Andy, I now realise I misread your post :-(

FV439 was real, we had a thread on here some years back with proof of their existence, in fact I have worked on a few. See this link; http://hmvf.co.uk/forumvb/showthread.php?15341-Fv439-Ptarmigan/page3

Hi Mark, The first number was allocated to a Dodge tipper and the other number is far too high, no 7 figure serial started with 9. regards, Richard

Hi Ray, There is one actively used for events by a young guy down near Campbelltown, not that far from you in Aussie distances. They get to the events at the Steam Museum at Menangle, one coming up in October. They will be able to show you around the controls, etc. regards, Richard

Is it a Seacow by any chance?

http://en.wikipedia.org/wiki/Women's_Royal_Air_Force

Tim, It was far worse than those photos show in places, where they would surge forward and stand in front of you taking photos. Over the week we must have had thousands of photos taken, by phone, camera or video.

I have had good results in cases like this of shocking the nut on its flanks. This stretches it slightly to break the bond on the thread and the nut can often be reused if of an odd size like this one. I have an old flat chisel with the end ground flat, approx. 3/16", using this and a heavy hammer strike it on the centre of the nut's flat inline with the bolt or stud. Best it you can do it in more than one place but not always able to. I had a similar sized nut to this where it was not practical to use heat and with the blunt chisel treatment, a 3/4" drive socket and long bar it released with no damage to nut or bolt, but had not been touched for 70 years or more.

Hi Duncan, The Solex Zero starting device is to all intents the choke, but it is fitted to the side of the carb and consists of a disc valve. It has two stages of movement and a ball and spring operate on a detent in the disc.

Hi Bill, Sounds like the hydraulic cylinder on the hydrovac is leaking in to the vacuum cylinder and hence being drawn into the engine. You will have to inspect the cylinder, and overhaul or replace. Richard

I know who you mean !!

:thumbsup:

Hi Tom, It is a 10mm plug made by AC, but the number is not to hand at present. I bought a box full once and gradually sold them all.

Transfer box in Neutral ?

Larry, There were no holders for "flimsy" cans. There were holders for the standard 2 gallon can, which dates back to pre-WW1. The so called flimsy was a four gallon can and for bulk transport of petrol. The smaller vehicles continued right through after the war with only holders for 2 gallon cans.

hi Rick, The nearest truck I can find with wheels similar is a Liberty I seem to recollect Dayton made the spider type wheels favoured by Mack amongst others.

Hi Steve, I zoomed the photo up and made it 82ZX82. Wally mentioned it being ZK, but as far as I know those letters were not used for "C" vehicles (ie plant). The two letter combinations used at that time for "C" vehicles was ZX and ZZ. regards, Richard

It is the head pad for the periscope sight mounting in a Saracen. Prefix is LV4