Perkins 4.99 - SECTION L Lubrication System; Sump and Oil Pump Removal

L1
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.
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
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
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).
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.
remove the sump.
L2