Renault R.7054 Manuel De Réparation page 53

PERKINS ENGINE
The Perkins 3-152 is identical
the Perkins 3-144. However, it differs in that it has
a larger bore and this results in a slight modifi-
cation of its specification, dimensions and the
adjustments which have to be carried out on it.
'The dismantling and- re-assembling operations are
the same on both these engines. Therefore, this
supplementdeals only with' the pecularities of the
3-152 engine.
SPECIFICATIONS
DIMENSIONS AND ADJUSTMENTS
Bore . . .
Cubic capacity
Normal operating speed . . . .
Maximum off load speed
Injec tion advance :
Crankshaft angle . . . . . .
Piston position . . .
Compression ratio
Liners
- in production, thin wall cast iron liners are
pressed into the cylinder block and rebored to a
diameter of 91.44 mm to 91,465 mm (3.600") to
(3.6009").
- under repair, thin wall cast iron liners are
inserted by hand and on a press. The bore is
91.44 to 91.465 mm as fitted.
reboring operation.
P i ston s
Nominal diameter
Weight
Connecting rods
The connecting rods are marked with a number
which indicate their weight •
9 - 1,361(47.907ozs) to 1,417(49.878 ozs)
10 - 1,417 (49.878 ozs) to 1,474 (51.884 ozs)
11 - 1,474 (51.884 ozs) to 1,531 (53.891 ozs)
12 - 1,531 (53.891 ozs) to 1,587 (55.862 ozs)
13 - 1,587 (55.862 ozs) to 1,644 (57.868 ozs)
14 - 1,644 (57.868 ozs) to 1,701 (59.875 ozs)
15 - 1,701 (59.875 ozs) to 1,757 (61.846 ozs)
Cranksh aft
Adjustment of crankshaft flangeS
Thickness of half thrust flanges
- nominal dimension : 3.124
(.122" to .124")
: 3.314 mm to 3.365 mm.
- repair dimension
(.130" to .132")
TAKE CARE - The gaskets of engines 3-144 and
3-152 are identical in appearance. Do not mix them
up. The gasket of engine 3-152 carries the Perkins
reference number 36.812.112. Its position is given
by the mark FRONT - TOP placed above and to
one side of the water pump.
3-152
in overall design to
91.440 mm (3.600")
2,500 cc (152.5 cu")
2,150 rpm
2, 350 rpm
220
5.87 mm (.231")
17.4 to 1
There is no
91.4 mm (3.598")
750 gr
± .24 ozs)
(26.4 ozs
mm to 3.174 mm
FITTING THE PISTON RINGS
Place the firing ring in the first groove.
The taper compression ring goes into the second
groove. The note TOP engraved on the ring placed
towards the crown of the piston.
The spring piston rings are fitted into the third
groove as shown in this diagram.
The oil control rings are fitted in the fourth and
fifth grooves with their chamfers upwards.
AND THE PISTON
TOP