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HINTS ON MAINTENANCE.

8th April 1924, Page 28
8th April 1924
Page 28
Page 28, 8th April 1924 — HINTS ON MAINTENANCE.
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How to Get the Best Out of a Vehicle, to Secure Reliability and to Avoid Trouble.

506.--Maintaining the Efficiency of the Karrier Side Brake. .

A difficulty which sometimes occurs with the side brake on the AV.D. Karrier is that, whilst holding 'excellently and preventing the vehicle from running forward, it is not so efficient in preventing the backward running. The trouble is also sometimes accompanied by a slight rumbling in the transmission, which is apt to give the impression that trouble is about to set up in the axle. The cause of the fault has been traced to play in the spherical thrust housing, no doubt due to neglected lubrication. To effect a cure, jack up the cardan case and find out how much play is occurring. It may be as much i

as 11, in. If play s found the bottom half of the housing should be retnoved. If a lathe be available it is a simple matter to remove the necessary metal from the faces, and also from the trench which registers with the wall in the upper half of the housing.

It must be remembered that the purpose of the thrust housing is to provide a moving joint and, therefore, there must he no question of a tight fit between the parts which shouldmove, so that after turning off the amount which is oonsid.ered sufficient, the, housing should be refitted and the jack lowered, when it will readily be seen whether sufficient of the play

has been taken up. it is important that the rubbing faces should be kept thoroughly well greased.

It will now be found that the side brakes, providing that the other bra,ke mechanism is in order, will be effective in both directions as the relative positions of the chassis and wheels remain unchanged.

507.—Using an Emergency Petrol Tank.

Fractures of petrol pipes are fairly frequent, and in such cases, if the tank be nearly empty, the remaining petrol is sometimes lost before the fault is discovered, particularly if the pipe is only partially cracked and a certain amount is flowing to the carburetter, so that the engine continues to function until it becomes starved.

In a recent case of this type which occurred, the driver, who was in the habit of carrying a length of rubber tubing, found it impossible to fix the tube as the break was nearly flush with the petrol cock, go, having a spare can of petrol, he simply brought this into the driver's compartment, put one end of the rubber tube into the petrol can nearly touching the bottom, • sucked through the tube until the petrol came over; thus making this into a siphon, and led the tube direct to the carburetter connection. This proved quite successful, and enabled the vehicle to be driven home without any trouble. We would point out to those who have had trouble with petrol pipe breakages that a very useful fitment, to enable repairs to be carried out to any part of the pipe, Oven if the breakage is close to the carburetter or tank, has recently been brought out by the Worthmore Motor :Co., of 32, Victoria Street, London, S.Ver.,1,-and sold at the 'price of 3s. 9d. .13,14

508.--An Improved Means of Adjustment for the Peerless Fan.

Many users who have had experience with the Peerless lorry know that the fan sometimes causes trouble through the retaining screws becoming loose, the fan spindle turning round in its bracket or, occasionally, breakages of the bracket, with the .resuit that the fan comes in contact with some of the radiator tubes and fractures these also.

The sketches which we reproduce are almost selfexplanatory, and readers will at once see how these dangers can be reduced to the minimum by making use of a jockey pulley mounted at the "near side of the chassis, • All that is required is a piece of 2-in, angle iron,

cut and slotted in the manner shown, and a bracket made from 2-in, solid steel bar with a stud provided to fit a pulley off an old Peerless fan, or, if this pulley be not available, one may easily be turned up.

The lilts are fitted so that the pulley and brackef are free to slide backwards or forwards in the slot of the angle iron, when the nuts are loosened. The fan is lowered into its bracket, so far as possible, and made secure in this by two taper pins. Any adjustment of the fan belt is effected at the jockey pAlley by merely slackening the two bolts and moving the pulley support in the direction required.

It will be found that if the nuts arc only slightly loosened, the pulley bracket may be tapped along the angle-iron carrier, to give a fine adjustment.

The advantages afforded are, shorter le-i3rage of the fan on its bracket, and an adjustment which is both accessible and inexpensive, also the belt will work satisfactorily while fairly slack.

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