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Valve Cotters Easily Replaced

25th June 1954, Page 41
25th June 1954
Page 41
Page 41, 25th June 1954 — Valve Cotters Easily Replaced
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A NY tool that simplifies the opera tion of replacing the valve cotters in a side-valve engine is worth acclaiming. An accessory that comes into this category is the Harmans universal valve-spring compressor, made by Harmans Engineering Co., Yelland, Fremlington, Devon.

Apart from being well made, which makes it a pleasure to handle, it is designed to give a parallel action so that the valve spring• always remains concentric to the valve stem. To use the lifter it is placed in position with the heel under the valve collar and the head located in the centre of the valve.

The head is next screwed down to make contact with the valve, and, thereafter, the lifter can be operated singlehanded by using the trigger. If necessary, the lifter can be locked with the spring fully compressed, but, in any event, one hand is left free to hold the cotters in position.

As the action is truly parallel, the valve collar will remain concentric to the valve stem, so that when the trigger is released there is no fear of the collar fouling the collets.

The jaws can be adjusted to suit different sizes of valve collar or spring.


CABS of lorries should, in the opinion of Gloucestershire Road Safety Committee, be reinforced to resist the impact of shifting loads when brakes are applied in an emergency. The committee are to press this point at national level. Ald. C. W. Luker, Lydney, said that there had been several serious accidents in the area because of shifting loads.

The county organizer, Brig. W. G. Hewett, stated that the number of accidents from this cause was small and those that did occur were because of overloading—against which there were regulations already.

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