john wheatley (R.I.P.) Posted September 6, 2006 Share Posted September 6, 2006 I have com across a Lockheed brake servo marked 114751C, possibly a part number. Any ideas how I can check it without plumbing it in to see if it works. Also if it works, how do I plumb it in? :? :? Quote Link to comment Share on other sites More sharing options...
0 russell sprout Posted September 6, 2006 Share Posted September 6, 2006 What is the internal diameter?? Is it stamped on the rubber parts?? Quote Link to comment Share on other sites More sharing options...
0 john wheatley (R.I.P.) Posted September 6, 2006 Author Share Posted September 6, 2006 external measurements are about 6" deep by 7 1/2 " across, any help? Quote Link to comment Share on other sites More sharing options...
0 fv1609 Posted September 6, 2006 Share Posted September 6, 2006 After Jacksons sale there have been a number of Lockhead servos that have surfaced on the market, they are used in the Humber 1-Ton & the measurements seem about right for yours. Here is the official test circuit. http://img.photobucket.com/albums/v684/fv1620/Servo02.jpg[/img] Quote Link to comment Share on other sites More sharing options...
0 john wheatley (R.I.P.) Posted September 6, 2006 Author Share Posted September 6, 2006 Many thanks for the diagram, is there a simpler way for an idiot like myself who does his repairs in the garden shed and wouldn't know where to get the pressure gauges and air supply needed? The only pressure gauge I own is the one I use to check my tyres. :? Quote Link to comment Share on other sites More sharing options...
0 sirhc Posted September 6, 2006 Share Posted September 6, 2006 There are a lot of these knocking about since Jacksons: http://www.marcusglenn.com/2006pics/19.jpg[/img] Is this the same as the Humber Clive? I know these fit Ferret and Fox. I had to change one after accidently connecting it up to the heater outlet on a CVRT J60 Chris Quote Link to comment Share on other sites More sharing options...
0 fv1609 Posted September 6, 2006 Share Posted September 6, 2006 John, yes it is a bit of a fiddle to set up unless of course you bought a whole batch of them you wanted to test :roll: It is either a test rig or fit in the vehicle or take it apart meticulousy & inspect to see if it is all gummed up or corroded or the rubbers have perished or gone hard. But why do you want a servo? Did your never have one? What sort of MV is it? How do other owners of the same vehicle cope? Presumably the army managed ok? Is it really worth all the hassle? Chris, just seen your post. It is the very same. I bought 8 last year from another dealer. I have to wonder how many were "Stored vertically"? Quote Link to comment Share on other sites More sharing options...
0 john wheatley (R.I.P.) Posted September 7, 2006 Author Share Posted September 7, 2006 |Bertha is a 1944 Morris 15cwt. and I thought fitting a servo might improve the braking which is bordering on pathetic. John. Quote Link to comment Share on other sites More sharing options...
0 sirhc Posted September 7, 2006 Share Posted September 7, 2006 I did wonder why these servos should be stored vertically, yet they're always installed horizontally. It also seems a bit daft to put the storage instructions on the servo, in a sealed box, and not on the outside of the box! Chris Quote Link to comment Share on other sites More sharing options...
0 Richard Farrant Posted September 7, 2006 Share Posted September 7, 2006 I know these fit Ferret and Fox. I had to change one after accidently connecting it up to the heater outlet on a CVRT J60 Chris, A word of warning regarding using cylinders when the intended vehicle use is not known. The Fox and Ferret Mk4 and 5 uses mineral oil, and the Ferret Mk2 and Humber uses sythentic brake fluid. There could be a problem if the servo was used on the wrong application. Generally a cylinder for use with mineral oil, has a green plastic tag on it or some light green paint on the cylinder. Richard Quote Link to comment Share on other sites More sharing options...
0 sirhc Posted September 7, 2006 Share Posted September 7, 2006 Richard, I shall have to check, but the one we put in the Fox seems to be working fine. I bought a spare, so I'll check that one. Chris Quote Link to comment Share on other sites More sharing options...
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john wheatley (R.I.P.)
I have com across a Lockheed brake servo marked 114751C, possibly a part number. Any ideas how I can check it without plumbing it in to see if it works. Also if it works, how do I plumb it in? :? :?
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