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25th May 1920, Page 27
25th May 1920
Page 27
Page 27, 25th May 1920 — For DRIVERS, MECHANICS & FOREMEN.
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Which of the following most accurately describes the problem?

TEN MILLINGS is paid to the sender of any letter which we publish on this page, and an EXTRA FIVE SHILLINGS to the sender of the one which we select as being the best each week. All notes are cdo'ed before being published. Mention your employees name, in confidence, as evidence of good faith; Address. -O., M. and F., "The Commercial Motor," 7-16, Bosebery Avenue, London, E,C. 1,

Lamps Alight.

On Saturday, Mar 29th, light your lamps at 9.32 in London, 10.9 in Edinburgh, 9.56 in. Newcastle, 9.53 in Liverpool, 9.43 i Birmingham, 9.42 in Bristol, and 10,36 in Dublin.

Repairing Leaky Carburetter Floats.

The sender of the following connuanicatio.n has been awarded the extra payment of 53. this week.

[2,092] "11.11." (Stoekten-on-T:ees) writes:—" I have had some difficulty with leaking carburetterilloate, and I send you the following tip, which may be of use to some of your readers in correcting defects of this kind.

"In some cases the leaks take place at the ends of the centre tube, where it is soldered into the body of the float ;. the top of the float is also often WWII away by the end of the-toggle levers. The trouble usually makes itself apParent by themarburetter float becoming logged with petrol, thus causing the carburetter to flood very badly. The first thing to do is to find out where the leak iS. This .eati easily be done by immersing the float, in boiling water, or even by holding the float clasped tightly in the hand, the warmth of the handbeing sufficient to. vaporize the petrol and cause the gas to gush out. Having discovered the leak, which is usually very small, the next step is to empty the float of petrel, and this is best carried out by drilling a, smallhole in the top of the float as near the outer edge as possible. If a small enough drill is not available, a very good substituteis to be found in. the use of an ordinary fine sewing needle. If using the latter, the best thing to do is to drive it through an ordinary bottle cork, SG that -11,7 of an inch of the head is projecting and the point is flush with the bottom of the cork. Place this improvised punch in position on the edge of the float, and give the needle a sharp tap with a light hammer, and a bole will be made as_ clean as would be the case with a drill. Empty out the.petrol through the hole and scrape theeoat clean where it is to be soldered, and solder the place where the first leak was found.

"To solder up the hole in the edge of the float will be found a more difficult task i because when the Soldering iron is.applied the heat from it is rapidly conducted all over the float, the gas left inside becomes expanded, and in rushing out blows the Solder away and nearly always leaves a very fine pin-hole. "To make a really sound job which *ill never leak, the best thing to do is to immerse the float in a. can of cold Water, leaving the edge where the hole is projecting just above the surface. If the solder is then applied no 'difficulty will be found, as the cold water will keep the interior of the float quite cool, and thus prevent the gas from expanding. To balance the float in the water, a small blob of solder should be placed on top of the float opposite the spot where the hole was repaired."

Moving a Stalled Lorry.

[2,093] " S.G.F." (Stowmarket) writes.:—" Travelling along one day recently I came to an unusually large black of traffic. .After being stopped some littletime, and without an.y apparent signs of impending movement, I walked out to the front of the block to see what was the matter, and there discovered that the driver of a fully loaded heavy motor lorry, while endeavouring to manoeuvre into the gates of a, large

warehouse, had managed to get stuck right across the road, had stopped his engine, and although he had been in that position for nearly an hour, had -been totally unable to get moving again. It was evident that the lorry .would have to be moved without the assistance of the engine, but the problem was howl Mere: manual labour had been tried, and a dozen or so men had proved unable to move it. Eventually I decided to try a.• dodge which has on` mere than one occasion got me out Of trouble. I 'moved the change speed lever into low gear, and usg the starting handle 'wound' the. engine. With some little difficulty I was able in this manner to move the lorrY out of the -way a .sufficient,distahee toallow the traffic to proceed.,' Renovating NinnIes (If Pipe Unions.

[2,094] "FEM." (West Brornwieh) writes :—" The nipples of small pipe unions, are often soldered on or brazed into place s little erratically: MOreciver, frequent removal and replacoment has a wearing effect on the eon-re part of thennionnipple. I have devised a tool for renovating•these parts, and the following description may interest your readers :— "I east a small U-shaped bracket, the dimensions and design of which will be apparent from thesketeh [which we have hadredrawn.—En.l. In the base of the 1/ fits a, split washer designed. to accommodate the nipple of the union. Into the ether, and open end of the bracket is fitted a nut,' which aceoldhliodates the screwed -boss of a hand-wheel, down the eentr6sof which fits a spindle. The inner end of the spindle carries a tool shaped to scrape the cone ends of the unions: :at the top end of the spindle is a Crank handle. *The hand-wheel, with its serewed centre, serves as a feed gear, turning the handle cuts a thin filth from the union nipple and trues it up with the stock."


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