Instruction manual

ManualsBrandsA.J.S. ManualsAutomotive18S

FILLING THE GREASE GUN

The standard grease gun consists of a barrel having a spring loaded end cap, to which

is fixed a central steel piston in the shape of a long rod. This piston fits into a small

cylinder made in one with the screwed top cap, on the end of which is the cupped nozzle

that fits over the grease nipples. In the barrel of the gun, and sliding on the central

piston rod, is a cork piston.

The grease must be filled on the TOP of the cork piston. The gun may be filled by

inserting the grease in the barrel of the gun by means of a lath or similar " spoon."

However, it is better to obtain the grease packed in the special containers that are

supplied, having loose collars in which are holes so that, by placing the barrel of the gun

over the hole of the central floating plate and pressing downwards, the gun is instantly

charged with grease. Twisting the gun, and, at the same time, taking it away from the

floating plate, leaves the top of the gun barrel flush with grease, and then all that remains

to be done is to replace the screwed top cap.

ENGINE LUBRICATION SYSTEM

This is by dry sump system. Oil feeds, by gravity, from the oil tank to the pump in the

crankcase. The pump forces oil to various parts, which then drains to the bottom of

crankcase sump. The pump then returns oil to the tank. This process is continuous

while the engine is revolving. The pump is designed to return more oil to the tank

than it can force into the engine. Therefore the crankcase sump is kept clear of excess oil.

A felt cartridge filter, in the oil tank, removes foreign matter collected by the oil in its

passage through the engine. A metal gauze strainer is fitted to the oil feed pipe in the

oil tank to prevent pieces of fluff, etc., which may find their way into the tank when

replenishing, from entering the oil pump. (See Illustration 4.)

Felt filter and metal strainer should be cleaned in petrol each time the oil tank is drained.

ENGINE OIL PUMP

The pump has only one moving part. This is the plunger which revolves and reciprocates.

Rotation is caused by the worm gear on the timing side flywheel axle. Reciprocation

It caused by the guide pin which engages in the profiled groove cut on the plunger.

Oil is fed to the pump through the lower of the two oil pipes between tank and crank-

case and Is returned through the upper pipe.

If, for any reason, the crankcase halves are separated, the oil pump plunger must

be removed from its housing before attempting to separate the crankcase

helves.

ENGINE OIL CIRCULATION

The oil pump forces oil through :—

(a) A passage cut through the timing side flywheel axle, timing side flywheel and crank

pin to lubricate the big-end bearing. The splash passes to interior of cylinder, to

lubricate the cylinder and piston, and then falls into the crankcase sump.

(b) A passage in crankcase, controlled by ball valve, direct to the cylinder, to assist in

cylinder and piston lubrication and then falls into the crankcase sump.

lubricate the timing gears and then falls into the crankcase sump.

(d) Through a pipe from the front of oil pump housing to the rocker box by which

all rocker gear and valve stems are lubricated and then falls through the push rod

cover tubes and tappet guides to the timing gear case and, from there, drains into

the crankcase sump, as detailed in Para. (c).

The oil pump extracts oil in the crankcase sump and returns it to oil tank. On its way

It passes through the felt cartridge filter located in the oil tank.