HONG KONG DAILY PRESS, WEDNESDAY, OCTOBER 8, 1930,
MOTOR NOTES
SERVICE
-REAL SERVICE
Latest Machinery Expert Mechanics European Supervision
MAY WE SERVICE
THE MOTOR-CAR
ENGINE.
Boouring the Radiator. However careful ong may bs, the water system requires cleaning out from time to time. The Aced. for this is generally indicated by the overheating of the engine. It is a The reduction of engine heat de.good plan, however, not to wait. peads largely upon the amount of for this symptom to appear, but to scour out the whole system twice. water which passes through the a year. When the engine is still warm the water should be drawn cooling system and the rate at
off by the drain rocks at the bot-- which it travels There are two tom of the radiator and at the systema commualy adopted to main pumps. Those ahould then be clos tain a steady flow of water, These ed and the system filled with a
the caastic solution, prepared Theoretically, the greater tho are the thermo-syphon and
by dis solving one pound of caustic soda pump methods.
in each five-gallons of water r quired. The engino should, then ba In the first case, the natural lawua for ten minutes, the radiator gravity is relied upon entirely being covered monttime with a rug
so as to retain the heat. The Bo tion should be allowed to remain in for about an hour, and then drain- et off. fhu interior should be thoroughly rinsed out by allowing water to run through for a few
HOW IT IS COOLED.
heat the more power is developed'; in practice, however, too great a temperature reduces the engine's efficiency. The purpose of the coelof ing system incorporated in a motor car engine is to prevent the tem peraturë rising too high, so cur ing the utmost efficiency..
Thermo-Syphon and Pump.
to induco a sufficient flow of water; in the accond case, the passage of water is increased by means of a pump. If the radiator be placed in the correct position, with the
If the engine part, bo too hot top container above the top and minutes, and finally refilled with
the ingoing charge of explosive
YOUR CAR? mixture in heated until it is in a system works excellently and is
NO JOB TOO SMALL NO PROBLEM TOO INTRICATE.
MAIN SERVICE STATION.
en water in the ordinary man- Spare Connections
ner.
the bottom container below the bottom of the water jackets, this quito equal to the pump method. very rarefcd state, and consequent-
The chief advantages of the thor- The connections between the wator ly tho, cylinder does not receive its mo-syphonic method are that there jackets surrounding the cylin full charge. When too high a ten- no pump to get out of order, dera and the top and bottom of the perature is maintained the lubriand the circulation of water proce- radiator are generally mado, of rub- cating oil becomes vory thin and eds in direct proportion to the her and canvas. [The fabric tends to perish in course of time, owing fails to function properly; thus heat of the engine. It may be said, there is a tendency for the metal therefore, to be perfectly automato the action of the water and the vibration of the engine, thus caus tu expand unduly, which results in tie. In cold weather the flow te
Those connections greatly increased friction or in a slower; in hot weather, or when the ing a lesk. Eizure. If the engine, be too cold engine is working under a heavy should be examined occasionally; 80 n proportionately larger amount lead, the flow is more rapid. An should the clips which hold the hose. in position. It is always wise to therefore always maintained.. keep spare connections on hand, When the pump system is cm- and the moment a leak is noticed, ployed a small pump worked off howover small, the hose should be the engine, is fitted; this forces the renewed. A repair is never antin water from the bottom of the radiafactory. tor into the jackets, thence, to the top of the radiator. The advant age of this system is that a smaller quantity of water may be carried tor may he fitted-as the speed of flow is groster,
10. CROSS LANE 23193 or heat is withdrawn from the ex- approximately even temperature is
WANCHAI
THE PEAK
PEAK GARAGE
29208
plosion, thus reducing its power. the majority of cars it is found that the most suitable temperature at which to maintain the engine is Blighty below the boiling point of water, this is mund about 200deg. F. This implies the sacrifice of a considerable amount of efficiency, but it ensures the various parts
of distortion or seizing
Correct Fan Working,
IN CASE OF working correctly, without danger this means that a smaller radin. al. attention is the fan. The pass-
EMERGENCY
23193
sotno
Cooling Systems. Air-cooling is adopted in Eight cara and in one largo car: motor-cycles, 100, are almost in: variably air-cooled. But for cars water is the best agent to employ.
The only other part of the cool- ing system which requires.occasion age of air through the radiator that is, between the cells or the Billed tubes is assisted by a rapid. Clean Water Important.
ly revolving fan attached to the front of the cylinder, block' and When Alling up the radiator care must be taken that the water is placed directly behind the radia tor. This far is usually worked clean. Dirty water, containing a considerable amount of solid matby a belt working on a pulley at The cylinder, are surrounded by ter of ens form or another, is fro-tached to the crankshaft. The cor
reet working of the fan is essential. water jackets, these being connectedquently used, causing the system to at top and bottom with a radiator become partially choked and reduc- to the efficiency of the cooling sys whole. Provision is al through which the water is caused ing the efficiency of the engine. to pass. The water. in, the jackets The accumulation of a deposit of ways made for adjusting the ton. taken up the heat from the cylinder pud, scale, or other foreign matsion of the belt, and thin should be sen to regularly. When all the ad- metal and, being lighter, rises to ter prevents the water from cireu- MODERN MOTOR SERVICE the top. It then goes through a Inting properly, and the engine be-justment allowed for has been overheatod. Clean water taken up, the belt itself should be pipe connected with the top of the commes radiator, passes through, this part only should be used, and to make shortened. of the cooling system, whore it doubly sure that no impurities are ses its heat, and then enters allowed to enter it should be passed through a pipe into the bottom of through strainer when being the jackets.
poured into the radiator.
[LANE, CRAWFORD, LD.]
tem 45
DIFFICULT DECISIONS
22
19-23
CORER LOT
By GLUYAS WILLIAMS
WHEN YOU ABSENT-MINDEDLY DRIVE PAST.
A "STOP-AND- ENTER? SIGN WITH AN OFFICER.
IN THE OFFING, AND YOU DON'T KNOW WHETHER
TO STOP WHERE YOU ARE, BACK UP
AND START: ALL OVER, OR KEEP GOING AND HOPE FOR THE BEST
(Copyright, 1930, by The Ball Syndicats, Inci)
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