SECTION L Lubrication System To Refit the Sump 1. Lightly apply a coating of a suitable jointing com- pound to the crankcase and sump faces, position the joints so that all the holes align. NOTE: When the joints are being placed in posi- tion it is important that the mitred ends go right up into the recesses in the front and rear main bearing caps. 2. Lightly apply a coating of jOinting compound to the cork strips, then press these strips into the grooves provided in the main bearing caps. 3. Place the sump in position and fit all the retaining setscrews, tighten evenly. 4. Replace the dipstick and sump drain plug, then refill with clean new oil of an approved grade to the correct level.
Do not overfill. To Remove the Oil Pump L1 1. Drain the engine oil and remove sump. 2. Remove the stra;ner from the end of the lubricating oil suction pipe. (Refer to Fig. L.1). The importance of correct and clean lubrication cannot be stressed too highly and all references to engine oil should be taken to mean lubricating oil which falls within the specification given in the appen- dix. Care should be taken to ensure that the oil chosen is that specified for the climatic conditions under which the engine is operated. 3. Unscrew the delivery pipe securing nut to the cylinder block and the setscrew securing the suc- tion pipe assembly to the rear main bearing cap.
THE LUBRICATING OIL PUMP The oil pump fits into a machined bore in the cylin- der block and is located by means of a screw locked by a tab washer. (Refer to No. 24 "Index to Engine Photographs" for its location). The oil pump is driven through spiral gears from the camshaft, on the other end of the drive shaft is pressed and pinned a four lobed rotor. This rotor meshes with and drives a five lobed rotor which is free to rotate within the cast iron pump body. To Remove the Sump 1. Remove the sump drain plug and drain th.e oil. 2. Remove the dipstick, sump securing setscrews and remove the sump. L2